UH130 M4 - Dishwasher Champion - Free user manual and instructions

Product Type	High Temperature Undercounter Dishwasher
Model	UH130 M4
Brand	Champion
Dimensions (Approx.)	24" W x 26" D x 34" H (including feet)
Weight (Approx.)	150 lbs
Electrical Requirements	115VAC, 60Hz, 15A, Single Phase (with 4 ft power cord and plug)
Water Supply	Hot water at 180°F (82°C) minimum, flow pressure 25-95 psi
Drain Connection	5/8" ID flexible hose, maximum drain height 3 ft, must be vented to WYE fitting
Wash Cycle Time	Approximately 141 seconds (Normal Wash Mode)
Final Rinse Temperature	180-195°F (82-91°C)
Sanitization	High temperature hot water sanitizing
Chemical Dispensing	2 built-in peristaltic pumps for detergent and rinse-aid (adjustable run time)
Control Panel	Power switch, start button, green in-cycle light, digital temperature display
Drain Mode	Automatic drain when power switch set to OFF/DRAIN; includes 3 short flush cycles
Rinse Sentry Mode	Not applicable (UH130 without booster; final rinse temperature must be externally maintained)
Extended Wash Mode	Not available on this model (only UH230/UH230B)
Loading Capacity	One dish rack at a time; do not overload; use peg or flat-bottom racks
Cleaning Frequency	Every 2 hours of continuous operation or after each meal period
Maintenance	Daily: clean scrap screen and spray arms. Weekly: inspect lines, leveling. Monthly: clean chemical pick-up tubing
Safety Features	Door interlock (stops cycle if door opened >5 sec), high-limit thermostat, electrical lockout required for service
Warranty	1 year from installation or 15 months from shipment (whichever first); parts 90 days
Service Parts Availability	Full list of replacement parts in manual (e.g., pump tubes, thermistors, valves, spray arms)
Compliance	UL listed, meets NSF/ANSI Standard 3 for high temperature sanitization

Frequently Asked Questions - UH130 M4 Champion

What is the minimum incoming water temperature required for the UH130 M4 dishwasher?

The hot water supply must provide a minimum of 180°F (82°C) at the dishwasher inlet for proper sanitization. The water pressure should be between 25 and 95 psi.

How do I prime the chemical dispensing pumps?

With the dishwasher power ON and water filled, open the door. Press and hold the prime switch UP for detergent until detergent enters the tank, then press DOWN for rinse-aid until bubbles appear in the tubing. Ensure chemical containers are full and pick-up tubes are correctly placed.

What does the error code 'b E' on the display mean?

The 'b E' code indicates a defective or disconnected booster thermistor. Since the UH130 does not have a built-in booster, this code may appear if the machine is misconfigured; check the thermistor connections or contact service.

How often should I clean the scrap screen and spray arms?

The scrap screen and spray arms should be cleaned daily—after every 2 hours of continuous operation or at the end of each meal period. Remove and flush with water; do not use metallic scrub pads.

Can I use the UH130 M4 with a chlorine-based sanitizer?

No, this is a high-temperature sanitizing dishwasher that relies on hot water (180-195°F) to sanitize. Only use commercial-grade non-chlorinated detergent and rinse-aid. For low-temperature chemical sanitization, refer to the UL130 model.

What electrical supply is needed for installation?

The UH130 M4 is prewired with a 4 ft power cord and plug for 115VAC, 15A, 60Hz, single phase receptacle. A dedicated circuit with a 15A breaker is required. For hardwiring, consult a qualified electrician.

How do I drain the dishwasher at the end of the day?

Push the Power Switch down to the OFF/DRAIN position. The machine will automatically perform 3 short flush cycles and then drain completely. Wait until the green cycle light goes out before opening the door.

What should I do if the dishwasher does not fill with water?

Check that the main water supply valve is open, the fill hose is not kinked, and the incoming water pressure is between 25-95 psi. If the solenoid strainer is clogged, clean it. Also verify the circuit board fuse is not blown (4A for UH130).

Is the dishwasher field convertible from single phase to three phase?

The UH130 M4 is designed for single phase only (115V). Models with an internal booster (UH130B, UH230B) can be converted, but this model does not have a booster and cannot be converted to three phase.

What are the recommended maintenance intervals?

Daily: Clean scrap screen and spray arms. Weekly: Inspect for leaks, check water hoses, level the machine, clean lime from heating element. Monthly: Clean chemical pick-up tubes by flushing with hot water and run 3 empty cycles.

USER MANUAL UH130 M4 Champion

Installation/Operation Manual with Service Replacement Parts

UH330B

UH230B

Undercounter Dishwashers M4 Series

UH330B M4

Condensate Removal

High Temperature

with built-in booster

Fresh Water Final Rinse

UH230 M4

High Temperature

without built-in booster

Fresh Water Final Rinse

UH130 M4

High Temperature

without built-in booster

Wash Refresh Final Rinse

UL130 M4

Low Temperature

Chemical Sanitization

Wash Refresh Final Rinse

UH230B M4

High Temperature

with built-in booster

Fresh Water Final Rinse

UH130B M4

High Temperature

with built-in booster

Wash Refresh Final Rinse

Issue Date: 5.13.15

Manual P/N 115440 rev. D

For machines beginning with S/N W140946406 and above

For future reference, record your dishwasher information in the box below.

Model Number ____ Serial Number ____

Voltage____Hertz____Phase____

Service Agent ____ Tel: ____

Parts Distributor ____ Tel: ____

National Service Department

In Canada: In the USA:

Toll-free: [phone] Toll-free: [phone]

Tel: [phone] Tel: [phone]

Fax: [phone] Fax: [phone]

email: [e-mail] email: [e-mail]

ATTENTION:

The model no., serial no., voltage, Hz and phase are needed to identify your machine and to answer questions.

The machine data plate is located on the lower front panel.

Please have this information ready if you call for service assistance.

The USGBC and the CaGBC Member Logos are trademarks owned by the U.S. Green Building Council and The Canadian Green Building Council, respectively, and are used by permission. The logos signify only that Champion is a USGBC member and a CaGBC member; USGBC and CaGBC do not review, certify nor endorse the products or services offered by its members.

REGISTER YOUR PRODUCT ONLINE

Make sure you are connected to the internet then enter an address below:

In the U.S.A.

http://www.championindustries.com/register

In Canada

http://www.championindustries.com/canada/register

Champion®

The Dishwashing Machine Specialists

PRODUCT REGISTRATION BY FAX

COMPLETE THIS FORM AND FAX TO:

[phone] in the USA

1-[phone] in Canada

PRODUCT REGISTRATION CARD

Model

Serial #

Date of Installation: ____/____/____

Company Name:

Address:

(Street) Province Postal Code

Telephone #: ( ) ____ --- ____

Contact:

Installation Company:

Address:

Telephone #:

Contact:

FAILURE TO REGISTER YOUR PRODUCT MAY VOID YOUR WARRANTY

IMPORTANT

IMPORTANT

Revision History

A revision might be a part number change, a new instruction, or other information that was not available at print time. We reserve the right to make changes to these instructions without notice and without incurring any liability by making the changes. Equipment owners may request a revised manual, at no charge, by calling 1 [phone] in the USA or by calling 1 [phone] in Canada.

Revision Revised Serial Number Revision Date Pages Effectivity Description

11.5.14	All	W140946406	Released First Edition
12.3.14	95-149	All	Revised UH330B Part Nos.
3.2.15 FC, i	All Corrected Effective Serial Number
	154	All	Changed UH330B fuse to 6 Amp on the schematic
4.27.15	16118,119	All	UH130, UH130b use 0706635 squeeze tube and pump
4.27.15	154	All	Updated UH330B ampacity charts
5.13.15	129	All	Changed 6A fuse P/N to 0513698

LIMITED WARRANTY

Champion Industries Inc. (herein referred to as Champion), 3765 Champion Blvd., Winston-Salem, North Carolina 27105, and P.O. Box 301, 2674 N. Service Road, Jordan Station, Canada, LOR 1S0, warrants machines, and parts, as set out below.

Warranty of Machines: Champion warrants all new machines of its manufacture bearing the name "Champion" and installed within the United States and Canada to be free from defects in material and workmanship for a period of one (1) year after the date of installation or fifteen (15) months after the date of shipment by Champion, whichever occurs first. [See below for special provisions relating to glasswashers.]

Warranty registration must be submitted to Champion within ten (10) days after installation either online on the Champion Industries website (http://www.championindustries.com/register) in the USA or http://www.championindustries.com/canada/register in Canada or by fax on the form provided at the front of this manual. If warranty registration is not returned to Champion within such period, the warranty will expire after one year from the date of shipment.

Champion will not assume any responsibility for extra costs for installation in any area where there are jurisdictional problems with local trades or unions. If a defect in workmanship or material is found to exist within the warranty period, Champion, at its election, will either repair or replace the defective machine or accept return of the machine for full credit; provided; however, as to glasswashers, Champion's obligation with respect to labor associated with any repairs shall end (a) 120 days after shipment, or (b) 90 days after installation, whichever occurs first. In the event that Champion elects to repair, the labor and work to be performed in connection with the warranty shall be done during regular working hours by a Champion authorized service technician. Defective parts become the property of Champion. Use of replacement parts not authorized by Champion will relieve Champion of all further liability in connection with its warranty. In no event will Champion's warranty obligation exceed Champion's charge for the machine. The following are not covered by Champion's warranty:

a. Lighting of gas pilots or burners.
b. Cleaning of gas lines.
c. Replacement of fuses or resetting of overload breakers.
d. Adjustment of thermostats.
e. Adjustment of clutches.
f. Opening or closing of utility supply valves or switching of electrical supply current.
g. Cleaning of valves, strainers, screens, nozzles, or spray pipes.
h. Performance of regular maintenance and cleaning as outlined in operator's guide.
i. Damages resulting from water conditions, accidents, alterations, improper use, abuse, tampering, improper installation, or failure to follow maintenance and operation procedures.
j. Wear on Pulper cutter blocks, pulse vanes, and auger brush.

Examples of the defects not covered by warranty include, but are not limited to: (1) Damage to the exterior or interior finish as a result of the above, (2) Use with utility service other than that designated on the rating plate, (3) Improper connection to utility service, (4) Inadequate or excessive water pressure, (5) Corrosion from chemicals dispensed in excess of recommended concentrations, (6) Failure of electrical components due to connection of chemical dispensing equipment installed by others, (7) Leaks or damage resulting from such leaks caused by the installer, including those at machine table connections or by connection of chemical dispensing equipment installed by others, (8) Failure to comply with local building codes, (9) Damage caused by labor dispute.

Warranty of Parts: Champion warrants all new machine parts produced or authorized by Champion to be free from defects in material and workmanship for a period of 90 days from date of invoice. If any defect in material and workmanship is found to exist within the warranty period Champion will replace the defective part without charge.

DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY. CHAMPION'S WARRANTY IS ONLY TO THE EXTENT REFLECTED ABOVE. CHAMPION MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED, TO ANY WARRANTY OF MERCHANTABILITY, OR FITNESS OF PURPOSE. CHAMPION SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. THE REMEDIES SET OUT ABOVE ARE THE EXCLUSIVE REMEDIES FOR ANY DEFECTS FOUND TO EXIST IN CHAMPION DISHWASHING MACHINES AND CHAMPION PARTS, AND ALL OTHER REMEDIES ARE EXCLUDED, INCLUDING ANY LIABILITY FOR INCIDENTALS OR CONSEQUENTIAL DAMAGES.

Champion does not authorize any other person, including persons who deal in Champion dishwashing machines to change this warranty or create any other obligation in connection with Champion Dishwashing Machines.

Table of Contents

Models UH130, UH130B, UH230, UH230B, UL130, UH330B

Revision History ....i

Limited Warranty ....ii

Model Descriptions ...... v

Installation - Models UH130, UH130B, UH230, UH230B 1

Receiving - Models UH130, UH130B, UH230, UH230B, UL130.... 1

Placement - Models UH130, UH130B, UH230, UH230B, UL130 .... 1

Electrical Connections UH130, UH230 1 Phase w/o Booster 2

Electrical Connections UH130B, UH230B 1 and 3 PH Wiring Diagrams .... 3

Connecting Incoming Power to the Main Terminal Block (1 and 3 PH)....4

Booster Heater Conversion from 1 to 3 PH 7

Water Connections - Models UH130, UH130B, UH230, UH230B.... 10

Drain Connection - Models UH130, UH130B, UH230, UH230B 11

Booster Fill Switch - (Filling the booster for the first time) UH130B, UH230B Only 14

Chemical Connections - Models UH130, UH130B, UH230, UH230B 16

Pumps and Injection Points - Detergent and Rinse-aid Dispensing Pumps 17

Pump Priming - Detergent and Rinse-aid Dispensing Pumps 19

Pump and Fill Adjustments - Detergent and Rinse-aid Dispensing Pumps.... 20

Operation - Models UH130, UH130B, UH230, UH230B 22

Loading Dish Racks - All Models.... 22

Normal Wash Mode - Models UH130 and UH130B Only 24

Normal Wash Mode - Models UH230 and UH230B Only 25

Rinse Sentry Mode - UH130B and UH230B 26

Extended Wash Mode - Models UH230 and UH230B Only 26

Drain Mode - All Models 27

Cleaning - Models UH130, UH130B, UH230, UH230B 28

Cleaning the Wash Tank - All Models....28

Cleaning the Wash Arms - All Models....29

Cleaning the Rinse Arms - Models UH230, UH230B Only....30

Cleaning Scrap Screen and Sump Strainer - All Models 31

De-liming - Models UH130, UH130B.... 32

De-liming - Models UH230, UH230B.... 33

Maintenance - Models UH130, UH130B, UH230, UH230B 34

Daily, Weekly, Monthly 34

continued on next page

Table of Contents

Table of Contents (continued)

Models UL130, UH330B

Installation - UL130 35

Receiving 1

Placement....1

(Single Phase) Electrical Connections 36

Water Connection 37

Drain Connection 38

Pumps and Injection Points - Detergent, Rinse-aid and Sanitizer Dispensing Pumps......40

Pump Priming - Detergent, Rinse-aid and Sanitizer Dispensing Pumps 42

Pump and Tank Fill Adjustments....43

Operation - UL130 44

Loading Dish Racks 44

Normal Wash Mode 45

Extended Wash Mode 46

Drain Mode 47

Cleaning - UL130 48

Cleaning the Wash Tank 48

Cleaning the Wash Arms 48

De-liming....50

Maintenance - UL130 52

Maintenance - Daily, Weekly, Monthly 52

Troubleshooting-UH130, UH130B, UH230, UH230B, UL130 53

Installation - Model UH330B 65

Receiving - All Models....66

Placement - All Models 66

Electrical Connections - UH330B with Booster 1PH and 3PH Wiring Diagram ......67

Connecting Incoming Power to the Main Terminal Block 1PH and 3PH....68

Booster Heater Conversion from 1PH to 3PH Operation....71

Completing the 1PH to 3PH Electrical Conversion ....73

Water Connection 74

Drain Connection 75

Chemical Connections - Chemical Injection Points 78

Pump Priming - Detergent and Rinse-aid Dispensing Pumps 79

Pump Adjustments - Detergent and Rinse-aid Dispensing Pumps 80

Table of Contents (continued)

Model UH330B

Operation - Model UH330B 82

Loading Dish Racks 82

Control Panel and Wash Mode 84

Rinse Sentry Mode 85

Drain Mode 86

Cleaning - Model UH330B 87

Cleaning the Wash Tank 87

Cleaning the Rinse Arms 88

Cleaning the Wash Arms 88

Cleaning the Scrap Screen and Sump Strainer 89

De-liming 90

Maintenance - Model UH330B 91

Daily, Weekly, Monthly 91

Troubleshooting - UH330B 92

Service Replacement Parts 95

Electrical Schematics and Timing Charts 151

Model Descriptions

UH130B

Wash Refresh Pumped Final Rinse

High temperature hot water sanitizing dishwasher with built-in 40° F/ 22° C rise booster heater or 70° F/ 39° C rise booster heater.

Two built-in chemical dispensing pumps.

Field convertible from single phase to three phase operation.

208-240VAC/60/1 and 3 phase

UH230B

Fresh Water Final Rinse

High temperature hot water sanitizing dishwasher with built-in 40° F/ 22° C rise booster heater or 70° F/ 39° C rise booster heater.

Two built-in chemical dispensing pumps - Detergent, Rinse-aid

Field convertible from single phase to three phase operation.

208-240VAC/60/1 and 3 phase

UH130

Wash Refresh Final Rinse

High temperature hot water sanitizing dishwasher without built-in booster heater.

Two built-in chemical dispensing pumps - Detergent, Rinse-aid.

208-240VAC/60/1

UH230

Fresh Water Final Rinse

High temperature hot water sanitizing dishwasher without built-in booster heater.

Two built-in chemical dispensing pumps - Detergent, Rinse-aid.

208-240VAC/60/1

UL130

Chemical Sanitizing Wash Refresh Final Rinse

Low temperature chemical sanitizing dishwasher with three built-in chemical dispensing pumps - Detergent, Rinse-aid, sanitizer.

120VAC/60/1

UH330B

Heat Recovery/Condensate Removal with Dry Assist

Fresh Water Pumped Final Rinse

High temperature hot water sanitizing dishwasher with built-in electric booster.

Two built-in chemical dispensing pumps - Detergent, Rinse-aid

Field convertible from single phase to three phase operation.

208-240VAC/60/1 and 3 phase

Optional Equipment (consult factory)

Peg dish rack - P/N 101285

Flat-bottom dish rack - P/N 101273

70°F/39°C rise built-in booster heater (UH-230B, and UH130B Only) c

17" Stand

6" Stand

NOTE:

The installation of your dishwasher must be performed by qualified service personnel familiar with food service equipment and must comply with all local health codes.

Problems due to improper installation are not covered by the Limited Warranty.

NOTE:

The installation of the dishwasher must comply with all local electrical, plumbing, health and safety codes or in the absence of local codes, installed in accordance with the applicable requirements in the National Electrical Code, NFPA 70, Canadian Electrical Code (CEC), Part 1, CSA C22.1; and the Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, NFPA 96.

Placement - UH130, UH130B, UH230, UH230B, UL130

CAUTION:

Be careful when lifting and moving the dishwasher to prevent damage to the machine.

1. Inspect the outside of the dishwasher carton for signs of damage.
2. Remove the carton and inspect the dishwasher for damage.
3. Check for any options or accessories that may have shipped with your dishwasher.
4. Compare the installation site utility connections with the dishwasher utility connections and make sure they are the same.

5. The dishwasher can be installed as a free-standing unit or under a counter-top. The typical counter-top height in most locations is 34" [86cm].

6. It is highly recommended that the underside of the counter-top be clad in metal.

7. Under counter installations should provide storage space for the dishwasher chemical supply containers. Do not elevate the containers above the finished floor.

8. Chemical supply containers should be placed as close to the machine as possible and the chemical tubing taped to the back of the machine should be repositioned before permanently placing the machine.

9. Place the dishwasher in its permanent location.

10. The dishwasher has 4 adjustable feet for leveling.

11. Level the dishwasher front-to-back and side-to-side.

Electrical Connections - UH130, UH230 1PH without Built-in Booster

WARNING:

Electrocution or serious injury may result when working on an energized circuit.

Disconnect power at the main breaker or service disconnect switch before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to indicate that work is being performed on the circuit.

Refer to the connection diagram below for single a phase machine without a built-in booster.

1. A three prong 4 foot power cord and plug is prewired with the machine for connection to a 115VAC power source.

SINGLE PHASE POWER CONNECTION Models UH130 and UH230

! ATTENTION !

Models UH130 and UH230 without a built-in booster are equipped with a 4 ft. power cord and plug. These models require a 115VAC,15A receptacle.

! ATTENTION !

A qualified electrician must connect the main incoming power to the dishwasher in accordance with all local codes and regulations or in the absence of local codes in accordance with the National Electrical Code or the Canadian Electrical Code.

Electrical Connections - UH130B, UH230B with Built-in Booster

1PH and 3PH Wiring Diagrams

! ATTENTION !

ALL DISHWASHERS ARE SHIPPED FROM THE FACTORY WIRED FOR SINGLE PHASE OPERATION UNLESS SPECIFIED AT THE TIME OF ORDER.

IF YOU ARE CONVERTING A SINGLE PHASE MACHINE TO THREE PHASE BE SURE

TO FOLLOW THE BOOSTER WIRING INSTRUCTIONS ON PAGES 7-8.

Refer to the connection diagrams below to connect main incoming power to the dishwasher.

THREE PHASE POWER CONNECTION
Models UH130B and UH230B

! VERY IMPORTANT !

1. Check the data plate on the front of the dishwasher for the phase of the machine.

If the data plate says the machine is 3 Phase, then connect a 3 PH power supply.

1. Remove the lower access panel.
2. Pull power connection box forward and out.
3. The Main Terminal Block has terminals for L1, L2, L3, Neutral and Ground.
4. Connect ground, then connect L1, L2, L3 to 208-230VAC.
5. Connect a current carrying neutral to N.
6. Main power connections are complete.

SINGLE PHASE POWER CONNECTION
Models UH130B and UH230B

! VERY IMPORTANT !

1. Check the data plate on the front of the dishwasher for the phase of the machine.

If the data plate says the machine is 1 Phase, then connect a 1 PH power supply.

1. Remove the lower access panel.
2. Pull power connection box forward and out.
3. The Main Terminal Block has connections for L1, L2, L3, Neutral and Ground.
4. Connect ground, then connect L1, L2 to 208-230VAC.
5. Connect a current carrying neutral to N.

DO NOT CONNECT POWER TO L3

1. Main Power connections are complete.

Connecting Incoming Power to the Main Terminal Block for 1PH and 3PH Machines with Boosters-UH130B, UH230B

WARNING:

Electrocution or serious injury may result when working on an energized circuit.

Disconnect power at the main breaker or service disconnect switch before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to indicate that work is being performed on the circuit.

! VERY IMPORTANT! PROVIDE A 3 FEET/1 METER SERVICE LOOP IN THE POWER SUPPLY CABLE TO SERVICE THE DISHWASHER.

! SINGLE PHASE POWER REQUIREMENT !

SINGLE PHASE UH130B and UH230B

The electrical power must be a 3-wire plus ground supply which includes a current carrying neutral.

! THREE PHASE POWER REQUIREMENT !

THREE PHASE UH130B and UH230B

The electrical power must be a 4-wire plus ground supply which includes a current carrying neutral.

Connecting Incoming Power to the Main Terminal Block for 1PH and 3PH Machines with Boosters-UH130B, UH230B

Refer to the photo below:

1. Remove the lower front dishwasher panel.
2. Remove the retaining fasteners (A) from the swing-out brackets and swing the chemical pump bracket (B) and the chemical circuit board bracket (C) out of the way as shown.

(continued on next page)

Installation - Model UH130, UH130B, UH230, UH230B

Connecting Incoming Power to the Main Terminal Block for 1PH and 3PH Machines with Boosters

(continued from previous page)

Refer to the photo below:

1. Provide a 3 foot/1 meter service loop in the power supply cable to service the machine
2. Route the power cable from the rear of the machine to the terminal block making sure the cable does not touch the booster tank.
3. Connect the power cable to the terminal block bracket using a suitable strain relief connector.
4. Connect the power wires according to the wiring diagrams on page 3 for either single phase or three phase operation.
5. Swing the chemical pump bracket and the chemical board back into position and secure with the existing fasteners.

Booster Heater Conversion from 1PH to 3 PH Operation

! VERY IMPORTANT! THE BOOSTER HEATER IS WIRED FOR 1PH OPERATION WHEN SHIPPED. FOLLOW THE INSTRUCTIONS BELOW TO WIRE THE BOOSTER FOR 3PH.

WARNING:

Electrocution or serious injury may result when working on an energized circuit.

Disconnect power at the main breaker or service disconnect switch before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to indicate that work is being performed on the circuit.

1. To convert the booster heater from single phase to three phase operation, locate the booster wire labeled 1H3 that is cable-tied to the booster hose.

2. Remove the shrink insulation from the terminal and connect to the booster heater element as shown in the wiring diagram on page 8.

The three phase booster wire (1H3) is cable-tied to the hose adjacent to the booster tank.

Booster Heater Conversion from 1PH to 3 PH Operation (continued)

! VERY IMPORTANT !

1. Disconnect the existing booster heater wires and change the booster heater element jumpers as shown in the illustration below
2. Connect wires 1H1, 1H2, and 1H3 as shown below.

Wiring Diagram - Booster heater element connections shown for 1 phase and 3 phase operation.

1. A replacement 3PH data plate is stowed on the back of the lower front access panel.
2. Replace the existing 1PH data plate on the front of the panel with the new 3PH data plate. Discard the 1PH data plate.
3. Refer to the instructions on page 3 to connect the main incoming power to the machine.

Completing the 1PH to 3PH Electrical Conversion

! ATTENTION! CHANGE THE DATA PLATE ON THE LOWER FRONT PANEL OF THE MACHINE

AFTER THE MACHINE IS WIRED FOR 3PH AND THE BOOSTER HEATER IS CONNECTED FOR 3PH.

1. The data plate on the dishwasher lower front panel must be changed after the machine is converted from single phase operation to three phase operation.
2. Locate the replacement data plate stowed on the back of the lower front panel.
3. Remove the paper backing from the label and carefully place it over the existing data plate label making sure it covers the label completely.
   4 Re-install the lower front panel to complete the conversion.

A three phase data plate is located on the back of the lower front panel.

Water Connections - UH130, UH130B, UH230, UH230B

! VERY IMPORTANT !

Make sure the flexible water supply and drain hoses are not kinked.

Plumbing connections must allow the machine to be pulled out for service and cleaning.

Plumbing connections must comply with national, provincial local plumbing and sanitary codes. Only qualified service personnel familiar with food service equipment should install the machine.

The installing plumber must thoroughly flush the water supply line to remove all debris BEFORE connecting the water supply line to the machine.

1. All models have a 6 ft. flexible hot water fill hose with a 3/4" female garden hose connector.

2. A 1/2" or larger main incoming supply line must be installed to the dishwasher.

3. A 1/2" or larger shut-off valve should be installed in the main water supply, as close to the dishwasher as possible for servicing.

FOR UH130: The UH130 has a built-in flow control. The flowing incoming hot water supply pressure must be between 25-95 psi. The hot water supply must provide a minimum of 180° F/ 82° C, measured at the dishwasher.

FOR UH130B: The UH130B has a built-in flow control. The flowing incoming hot water supply pressure must be between 25-95 psi. The hot water supply must provide a minimum of 140° F/60°C, measured at the dishwasher for 40° F/22°C rise booster or 110° F/43°C for 70° F/39°C rise booster.

1. FOR UH230: The hot water supply must provide a minimum of 180° F/ 82° C, measured at the dishwasher. A pressure regulating valve, PRV, (supplied), must be installed after the shut-off service valve if the incoming flow pressure exceeds 20-22 psi.

FOR UH230B: The hot water supply must provide a minimum of 140° F/ 60° C, measured at the dishwasher for 40° F/ 22° C rise booster or 110° F/ 43° C for 70° F/ 39° C rise booster.

A pressure regulating valve, PRV, (supplied), must be installed after the shut-off service valve if the incoming flow pressure exceeds 20-22 psi.

1. A water hardness of 3 grains/gal (US) [5.3 mg/L] or less is recommended. Excessively hard water will negatively impact wash results.

Drain Connections - UH130, UH130B, UH230, UH230B

! VERY IMPORTANT !

Do not connect the drain hose to a disposer. The dishwasher will not drain correctly.

Refer to the photo below.

1. All models are equipped with a 6 ft.. 5/8" I.D. drain hose. The maximum drain height connection must not exceed 3 ft.[1 m] and must be vented to prevent the wash tank from siphoning.
2. The drain hose is located at the rear of the dishwasher, and is secured to the rear of the machine by two clamps to maintain an anti-siphoning loop in the drain hose.
3. A 3/4" hose barb fitting is strapped to the drain hose prior to shipment. The service part number for the hose barb is P/N 0512321.
4. Additional plumbing parts must be supplied by the plumbing installer.
5. The maximum drain flow is 15 US gpm/12.4 imp gpm/60 lpm.

! ATTENTION! FAILURE TO FOLLOW THE DRAIN CONNECTION INSTRUCTIONS MAY VOID THE WARRANTY.

Drain Connection - UH130, UH130B, UH230, UH230B (continued)

NOTE

Plumbing connections must comply with national, provincial local plumbing and sanitary codes.

DO NOT REMOVE THE CLAMPS HOLDING THE DRAIN HOSE TO THE BACK OF THE DISHWASHER.

DO NOT CONNECT THE DRAIN HOSE TO A DISPOSER.

DO NOT REDUCE THE SIZE OF THE DRAIN HOSE CONNECTION NOR USE A DOMESTIC DRAIN FITTING.

DO NOT ADD ADDITIONAL LENGTH TO THE DRAIN HOSE.

DO NOT ALLOW THE DRAIN HOSE TO KINK.

For a Direct Drain Connection:

1. Install the drain hose to an 1-1/2" or larger vented "WYE" drain fitting.

2. CONNECTION TO A "TEE" FITTING WILL PREVENT THE DISHWASHER FROM DRAINING COMPLETELY.

DO

connect the dishwasher flexible drain hose to a vented WYE drain fitting.

DO NOT

connect the dishwasher flexible drain hose to a TEE drain fitting.

For an Indirect Drain Connection:

1. A 1" [25.4mm] minimum air gap must be provided between the outlet of the dishwasher drain hose and the flood-level rim of the floor drain, floor sink or any other locally approved drain receptacle. (See illustration below.)

! VERY IMPORTANT! IMPROPER INSTALLATION OF MACHINE DRAIN HOSE.

Machine drain problems are often the result of improper installation and may not be covered by the limited warranty.

Booster Fill Switch - (Filling the booster tank for the first time) UH130B and UH230B only

! CAUTION! AVOID PERMANENT DAMAGE TO THE BOOSTER HEATER

DO NOT TURN THE DISHWASHER POWER SWITCH ON WHEN FILLING THE BOOSTER FOR THE FIRST TIME.

THE BUILT-IN BOOSTER TANK WAS DRAINED BEFORE SHIPMENT AND MUST BE REFILLED BEFORE OPERATING THE DISHWASHER.

To refill the booster for the first time:

1. Turn the main breaker or disconnect switch to the dishwasher ON.
2. DO NOT PUSH THE DISHWASHER ON-OFF/DRAIN POWER SWITCH TO THE ON POSITION.
3. Locate the booster fill switch and note the switch is in the OFF position.

(continued on next page)

Booster Fill Switch - (Filling the booster tank for the first time)

UH130B and UH230B only

1. PUSH AND HOLD the booster fill switch in the FILL position until water starts filling inside the wash compartment.

2. Release the FILL switch.

1. PUSH the booster fill switch to the ON position and release.

2. The booster fill operation is complete.

3. Replace the lower front panel on the machine.

Chemical Connections UH130, UH130B, UH230, UH230B

! VERY IMPORTANT! ALWAYS USE A COMMERCIAL-GRADE NON-CHLORINATED DETERGENT. PLACE THE CHEMICAL SUPPLY CONTAINERS AS CLOSE TO THE MACHINE AS POSSIBLE. DO NOT ELEVATE THE CHEMICAL CONTAINERS ABOVE THE FINISHED FLOOR.

! VERY IMPORTANT! Contact a chemical supplier for detergent and rinse-aid chemicals. The chemical supplier must adjust the chemical dispensing pumps for water hardness and food soil types.

Chemical Dispensing Pumps

1. The detergent and rinse-aid pumps are located on the lower left-side of the machine behind the lower-front access panel.
2. Each pump is equipped with 6 feet [1.8 m] of pick-up tubes consisting of supply tubing, stiffener tubes, and strainers.
3. The pick-up tubes are stowed on the back of the machine for shipping.
4. A red label marked DETERGENT and a blue label marked RINSE-AID identify the chemical lines.

The UH230, 230B pumps are located on the left-side behind the lower front panel of the dishwasher.

The UH130, 130B pumps are located on the left-side behind the lower front panel of the dishwasher.

Pumps and Injection Points - Detergent and Rinse-aid Dispensing Pumps

UH130, UH130B

! VERY IMPORTANT !

ALWAYS USE A COMMERCIAL-GRADE NON-CHLORINATED DETERGENT.

PLACE THE CHEMICAL SUPPLY CONTAINERS AS CLOSE TO THE MACHINE AS POSSIBLE.

DO NOT ELEVATE THE CHEMICAL CONTAINERS ABOVE THE FINISHED FLOOR.

Injection Point Locations

1. For UH130 and UH130B, the detergent and rinse-aid enter the wash tank compartment through a fitting on back right corner of the wash compartment.

(continued on next page)

Pumps and Injection Points - Detergent and Rinse-aid Dispensing Pumps UH230, UH230B

1. For UH230 and UH230B, the detergent enters the wash tank compartment through a fitting on the back right corner of the wash compartment. Rinse-aid enters the final rinse piping through a fitting near the vacuum breaker.

Pumps and Injection Points - Detergent and Rinse-aid Dispensing Pumps

UH130, UH130B and UH230, UH230B

Priming the Dispensing Pumps

! VERY IMPORTANT !

The chemical dispensing pumps must be primed before operating the dishwasher and whenever the chemical container is changed.

UH130, UH130B Control Panel

UH230, UH230B Control Panel

1. The chemical dispensing pump supply lines must be primed before they will pump the chemicals properly.
2. Make sure the chemical containers are full and the correct pick-up tubes are in their containers.
3. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher will fill with water.

4. Close the door to complete the priming operation.

5. Open the dishwasher door, then push and hold the prime push button UP to the DETERGENT position until detergent is observed entering the wash tank compartment through the fitting located on the back right corner of the tank. Release the push button.

6. Push and hold the prime push button DOWN to the Rinse-aid position until you see air bubbles moving through the rinse-aid tubing coming out of the chemical container. Release the push button.

(continued on next page)

Installation - Model UH130, UH130B, UH230, UH230B

Detergent and Rinse-aid Dispensing Pumps - Pump and Fill Adjustments UH130, UH130B and UH230, UH230B

! ATTENTION !

The amount of dispensed chemical is determined by the run time of the dispensing pump.

Refer to the photo below:

1. The chemical dispensing pump run and the tank fill adjustment screws are located on the end of the chemical circuit board swing-out bracket.
2. It is not necessary to swing the bracket out to make adjustments, but if desired, remove the mounting nut (A) and swing the bracket (B) out and to the right.
3. Refer to the next page for adjustment instructions.

! VERY IMPORTANT !

INSPECT & REPLACE THE CHEMICAL DISPENSING PUMP SQUEEZE TUBES EVERY SIX MONTHS.

! VERY IMPORTANT !

Contact a chemical supplier for detergent and rinse-aid chemicals. The chemical supplier must adjust the chemical dispensing pumps for water hardness and food soil types.

Detergent and Rinse-aid Dispensing Pumps - Pump and Fill Adjustments UH130, UH130B and UH230, UH230B

Refer to the photo below:

To adjust the amount of chemicals dispensed by the pumps:

1. Make sure the chemical containers are full and the pick-up tubes are in their proper containers.
2. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher will fill with water.
3. Run a normal dishwasher cycle and test detergent and rinse-aid concentrations according to the chemical supplier's instructions.

CAUTION:

Excessive pressure to the potentiometers when adjusting can result in bent or broken adjusting screws.

1. Each dispensing pump has a clearly marked adjustment screw. Turn the screw CW to increase the run time of the dispensing pump and CCW to reduce the run time.

UH130, UH130B only To adjust the tank fill:

1. The fill adjustment screw will provide a small change in the tank water level.
2. If a large adjustment is needed, check the incoming water pressure and make sure the fill hose is not kinked.
3. If the above items are okay then the size of the incoming water supply should be checked. The incoming water supply line must be a minimum of 1/2" or larger.

Operation - Model UH130, UH130B and UH230, UH230B

Operation - UH130, UH130B and UH230, UH230B

Loading Dish Racks

! VERY IMPORTANT! DO NOT OVERLOAD THE DISH RACK. LOAD ONE DISH RACK INTO THE MACHINE AT A TIME.

1. Prescrap and rinse the wares before loading to remove large food particles.

2. Load soiled wares into the dish rack. Place plates and glasses in a peg rack. Place cups and bowls in a flat bottom rack. Place utensils in a single layer in a flat-bottom rack. Place pots and pans in a flat-bottom rack.

Do not overload the dish rack. Wash one dish rack at a time.

1. Slide one dish rack into the wash compartment making sure that wares do not interfere with the rotating spray arms. Do not wash more than one dish rack at a time.

Loading Dish Racks (continued)

Load pots and pans in a flat-bottom rack.

Load utensils in a single layer in a flat-bottom rack.

Load cups and bowls in a flat-bottom rack.

NEVER stack dish racks. Wash one dish rack at a time.

Normal Wash Mode
UH130B Control Panel

1. Close the dishwasher front door.
2. Push the dishwasher Power Switch UP to turn the power ON.
3. The power switch will illuminate and the machine will fill with water.
4. Wait until the wash temperature gauge indicates a minimum of 150° F/66°C.

PLACE AN EMPTY DISHRACK IN THE MACHINE AND RUN THE FIRST CYCLE EMPTY TO HEAT THE WASH TANK INTERIOR.

1. Load the dish rack into the machine. Wash one dish rack at a time.
2. Close the door, then press the START BUTTON for 1 second. The green in-cycle light will illuminate and the wash cycle will begin. The total cycle is approximately 141 seconds.
3. Opening the door during a cycle will stop the dishwasher. If the door is open more than 5 seconds the cycle will restart from the beginning, if open less than 5 seconds the cycle will resume where it left off when the dishwasher door is closed.
4. The final rinse cycle begins at the end of the wash cycle. The machine drains and then refills with fresh water hot water. Check the rinse temperature gauge during the final rinse. It must indicate a minimum of 180-195°F/82-91°C. The final rinse water is retained for the next wash cycle.
5. When the green cycle light goes out, open the door and remove the rack of clean wares.

! ATTENTION! DOOR LEFT OPEN DURING WASH CYCLE

If the dishwasher door is left open for more than 5 seconds during the normal wash mode, then the dishwasher cycle will reset to the beginning of the normal wash cycle.

! ATTENTION! RINSE SENTRY MODE WILL EXTEND WASH CYCLE TIME

In the event that the final rinse temperature has not reached 180-195°F/82-91°C after the wash cycle, the rinse sentry will extend the wash cycle time until the booster reaches 180-195°F/82-91°C. If the proper temperature is not reached within 5 minutes, the machine will leave the rinse sentry mode and complete the cycle.

UH230B Control Panel

1. Close the door.
2. Push the dishwasher Power Switch UP to turn the power ON.
3. The power switch will illuminate and the machine will fill with water.
4. Check the pressure gauge as the machine fills and make sure the incoming water pressure is between 20-22 PSI.

Wait until the wash temperature gauge indicates a minimum of 150° F/66°C.

PLACE AN EMPTY DISHRACK IN THE MACHINE AND RUN THE FIRST CYCLE EMPTY TO HEAT THE WASH TANK INTERIOR.

1. Load the dish rack into the machine. Wash one dish rack at a time.
2. Close the door, then press the START BUTTON for 1 second. The green in-cycle light will illuminate and the wash cycle will begin. The total cycle is approximately 90 seconds.
3. Opening the door during a cycle will stop the dishwasher. If the door is open more than 5 seconds the cycle will restart from the beginning, if open less than 5 seconds the cycle will resume where it left off when the dishwasher door is closed.
4. The final rinse cycle begins at the end of the wash cycle. The machine drains and retains a portion of the final rinse water for the next wash cycle.
5. Check the rinse temperature gauge during the final rinse. It must indicate a minimum of 180-195° F/82-91°C. The final rinse water is retained for the next wash cycle.
6. Check the pressure gauge during the final rinse to ensure the gauge reads 20-22 PSI.
7. When the green cycle light goes out, open the door and remove the rack of clean wares.

UH130B and UH230B Rinse Sentry Mode

! ATTENTION !

DOOR LEFT OPEN DURING WASH CYCLE

If the dishwasher door is left open for more than 5 seconds during the normal wash mode, then the dishwasher cycle will reset to the beginning of the normal wash cycle.

! ATTENTION !

RINSE SENTRY MODE WILL EXTEND WASH CYCLE TIME

In the event that the final rinse temperature has not reached 180-195°F/82-91°C after the wash cycle, the rinse sentry will extend the wash cycle time until the booster reaches 180-195°F/82-91°C. If the proper temperature is not reached within 5 minutes, the machine will leave the rinse sentry mode and complete the cycle.

Extended Wash Mode

Model UH230, UH230B Only

The Extended Wash Mode is used to wash heavily soiled items such as pots, pans and other wares that require more washing time than the standard 90 second Normal Wash Mode. The dishwasher will remain in the Extended Wash Mode until the operator exits the mode or a maximum of 15 minutes, whichever occurs first.

1. Load a dish rack into the dishwasher, close the door and press the START button.
2. The green in-cycle light will illuminate and the dishwasher will begin a normal wash cycle.
3. Wait 10 seconds for the detergent to enter the wash compartment before pressing the EXT WASH button.

Press the EXT WASH button to place the machine into the extended wash mode to clean heavily soiled wares.

1. Press the EXT WASH button to place the dishwasher in the Extended Wash Mode.

2. The green extended wash light will illuminate indicating that the machine is in the Extended Wash Mode.

3. The dishwasher will continue to wash for a maximum of 15 minutes unless the operator presses the EXT WASH button again.

4. Press the EXT WASH button. The green extended wash light will go out indicating that the dishwasher has returned to the Normal Wash Mode.

5. The dishwasher will finish the wash cycle and perform a final rinse of the wares.

UH130, UH130B and UH230, UH230B

Drain Mode

The dishwasher will enter the drain mode whenever the Power Switch is pushed down to the OFF/DRAIN position.

1. Push the illuminated power switch down to the OFF/DRAIN position. The power switch light will go out.
2. The cycle light will illuminate and the machine will drain.
3. The machine, will flush, perform 3 short drain cycles and then drain completely.
4. The cycle light will go out indicating that the drain cycle is complete. Do not open the door until the light goes out.

! VERY IMPORTANT !

Draining Problems Related To Improper Installation.

Problems with draining are often the result of improper installation. The drain hose is looped and clamped as shown in the photo below and must not be changed.

The drain hose is looped and clamped and must not be changed. Altering the drain hose routing may result in the machine's inability to drain or may cause the machine to siphon the water out of the machine.

! VERY IMPORTANT!

DRAIN AND CLEAN THE DISHWASHER EVERY 2 HOURS OF CONTINUOUS OPERATION, AFTER EACH MEAL PERIOD, AND AT THE END OF THE DAY.

All Models

Cleaning the wash tank:

1. Remove the upper and lower spray arms and flush clean in a sink.
2. Remove the scrap screen taking care that debris does not fall off the screen and into the wash tank or sump. Flush the screen clean in a sink. Be sure to back-flush the screen.
3. DO NOT strike the scrap screen on solid surfaces.
4. Check the sump for foreign material.
5. Clean the pump intake strainer in the bottom of the sump.
6. DO NOT scrub the interior with metal scrub pads.
7. Check the sump heating element for lime deposits and gently remove with a scouring pad. DO NOT USE METALLIC SCRUB PADS.
8. Wipe the exterior of the dishwasher with a soft clean cloth and a mild detergent.
9. Leave the door open to aid in overnight drying.

! ATTENTION !

DO NOT USE METALLIC SCRUB PADS TO CLEAN THE MACHINE. DO NOT SPRAY THE EXTERIOR OF THE MACHINE WITH WATER.

UH130, UH130B and UH230, UH230B - Cleaning

UH130, UH130B

1. Unscrew the retaining screw from the upper and lower interchangeable spray arms.

2. Flush the spray arms clean in a sink. Be sure to flush the wash arm bearings.

UH230, UH230B

1. Unscrew the retaining screw from the upper and lower rinse arms. The rinse arms are interchangeable.

2. Remove the upper and lower wash arms and flush clean in a sink.

3. Flush the wash arm bearings clean.

Cleaning - UH230, UH230B Only

UH230, UH230B Rinse Arms

1. There are two rinse arms in the UH230, and UH230B. They are interchangeable.
2. Remove the spindle assembly and end plugs in each pipe and flush the rinse pipes.
3. Inspect the rinse arm bearings for wear and replace as necessary.
4. Clean the rinse arm nozzles with a small paper clip.
5. Reassemble the rinse arm assemblies.

(continued on next page)

All Models

Scrap Screen and Sump Strainer

1. Lift the scrap screen straight up and out of the machine to prevent food particles from falling into the tank sump.
2. Flush the scrap screen in a remote sink making sure to back-flush both side of the screen.
3. Wipe the tank sump of water and debris.
4. Carefully inspect the pump intake strainer. This strainer is not removable but must be thoroughly cleaned before reinstalling the scrap screen.

! ATTENTION !

A CLOGGED OR RESTRICTED SUMP STRAINER WILL PREVENT THE PROPER WASHING, RINSING AND DRAINING OF THE MACHINE.

! ATTENTION !

WIPE THE EXTERIOR OF THE MACHINE WITH A SOFT CLOTH AND MILD DETERGENT. DO NOT SPRAY THE EXTERIOR WITH WATER OR BLEACH.

LEAVE THE DOOR OPEN TO AID IN OVERNIGHT DRYING.

De-liming Cautions and Warnings

A de-liming agent must be used in accordance with your chemical supplier's instructions.

DANGER:

Death or serious injury may result when de-liming solution is mixed with sodium hypochlorite sanitizing agent. Mixing may cause hazardous gases to form. De-liming solution and other acids must never be mixed with chlorine, iodine, bromine, or fluorine.

CAUTION:

Skin contact with de-liming solutions can cause severe irritation and possible chemical burns. Always wear eye protection, rubber gloves and protective clothing when handling chemicals.

UH130 and UH130B De-liming Procedure

Follow the procedures below to de-lime the UH130, UH130B dishwasher.

1. Open the dishwasher door and remove any dish rack.
2. Turn the power switch on the dishwasher to the ON position.
3. Remove the detergent and rinse-aid chemical supply tubing from their chemical supply containers.
4. Place the detergent and rinse-aid tubing in a container of hot water.
5. Press and hold the prime switch UP in the DETERGENT position to flush all of the detergent from the supply tubing. Release the switch.
6. Press and hold the prime switch DOWN in the RINSE AID position to flush all of the rinse-aid from the supply tubing. Release the switch.
7. Close the door and run 4 empty cycles to flush any chemicals from the dishwasher tank
8. Always wear eye protection, rubber gloves and protective clothing when handling chemicals.
9. Open the door and carefully add the de-liming chemical to the wash tank in accordance with the chemical supplier's instructions. Be careful to avoid splashing.
10. Close the door and press the START button to run a dishwasher cycle.
11. Check the de-liming results and if scale is still present repeat steps 8-9.
12. Run 4 empty cycles to flush any de-liming chemicals from the machine.
13. Return chemical supply tubing to their containers and prime the chemical lines.
14. Return the dishwasher to normal operation.

Read and Follow the De-liming Cautions and Warnings on page 32 before de-liming the machine..

UH230 and UH230B De-liming Procedure

Follow the procedures below to de-lime the UH230, UH230B dishwasher.

1. Open the dishwasher door and remove any dish racks.
2. Turn the power switch on the dishwasher to the ON position.
3. Remove the detergent and rinse-aid chemical supply tubing from their chemical supply containers.
4. Place the tubing in a container of hot water.
5. Press and hold the prime switch UP in the DETERGENT position to flush the detergent from the supply tubing. Release the switch.
6. Press and hold the prime switch DOWN in the RINSE AID position to flush the rinse-aid from the supply tubing. Release the switch.
7. Turn the dishwasher power switch to OFF/DRAIN to drain the wash tank. The green cycle light will go out in about 2 minutes.
8. Always wear eye protection, rubber gloves and protective clothing when handling chemicals. Open the door and carefully add the de-liming chemical to the wash tank in accordance with your chemical supplier's instructions. Be careful to avoid splashing.
9. Close the door and press the EXT WASH/DELIME switch three times. The EXT WASH/DELIME indicator light will illuminate and the machine will run for 23 minutes.
10. Check the de-liming results and if scale is still present repeat steps 7-9.
11. Push the power switch ON to refill the machine and return the dishwasher to normal operation.
12. Return chemical supply tubing to their containers and prime the chemical lines.

UH130, UH130B and UH230, UH230B - Maintenance

Follow the maintenance schedules below to keep the dishwasher operating most efficiently.

Daily Maintenance

1. Make sure the water supply is on and that the drain is not clogged.
2. Check the temperature gauges and/or displays to ensure they are operating.
3. Make sure the dish racks are in good condition.
4. Check the chemical containers and refill as required.
5. Follow the cleaning procedures provided in the Cleaning Section.

Weekly Maintenance

1. Perform Steps 1-5 in the Daily Maintenance.
2. Inspect water lines for leaks.
3. Check for water leaks underneath the dishwasher.
4. Make sure the flexible water fill and drain hoses are not kinked.
5. Make sure that the dishwasher is level.
6. Clean accumulated lime deposits from the wash tank heating element.
7. Inspect the scrap screen and replace it if damaged.
8. Check the spray arms and replace or repair if damaged.

Monthly Maintenance

1. Perform the Daily and Weekly Maintenance listed above.
2. Clean the chemical dispenser pick-up tubing for the chemical dispensing pumps.

To clean the pick-up tubing:

1. Remove the pick-up tubes from their containers.
2. Place each tube in a separate container of hot water.
3. Press and hold the PRIME buttons UP and DOWN until water flows into the wash tank compartment.
4. Return the pick-up tubes to their containers.
5. Run 3 empty dishwasher cycles to flush any chemicals from the dishwasher wash compartment.
6. Return the pick-up tubes to their containers and prime the chemical lines.

NOTE: There are no lubrication points on the dishwasher.

Model UL130 Low Temperature Chemical Sanitizing Undercounter Dishwasher

WARNING:

Electrocution or serious injury may result when working on an energized circuit.

Disconnect power at the main breaker or service disconnect switch before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to indicate that work is being performed on the circuit.

! ATTENTION !

A qualified electrician must connect the main incoming power to the dishwasher in accordance with all local codes and regulations or in the absence of local codes in accordance with the National Electrical Code or the Canadian Electrical Code.

Refer to the connection diagram below for single a phase machine without a built-in booster.

1. A three prong 4 foot power cord and plug is prewired with the machine for connection to a 115VAC power source.

! ATTENTION !

Model UL130 is equipped with a 4 ft. power cord and plug. These models require a 115VAC,15A receptacle.

! VERY IMPORTANT !

Make sure that the flexible water supply and drain hoses are not kinked.

Plumbing connections must allow the machine to be pulled out for service and cleaning.

Plumbing connections must comply with national, provincial local plumbing and sanitary codes. Only qualified service personnel familiar with food service equipment should install the machine.

The installing plumber must thoroughly flush the water supply line to remove all debris BEFORE connecting the water supply line to the machine.

1. All models have a 6 ft. flexible hot water fill hose with a 3/4" female garden hose connector.

2. A 1/2" or larger main incoming supply line should be installed to the dishwasher.

3. We recommend that a 1/2" or larger shut-off valve be installed in the main water supply, as close to the dishwasher as possible for servicing.

4. The UL130 has a built-in flow control which requires that the incoming hot water supply pressure must be between 25-95 psi.

5. The hot water supply must provide a minimum of 120° F/ 49° C, measured at the dishwasher; however, 140° F/ 60° C is recommended.

6. A water hardness of 3 grains/gal (US) [51.3 mg/L] or less is recommended. Hard water can adversely affect wash results.

Drain Connection - UL130

1. All models have a 6 ft.. 5/8" I.D. drain hose. The maximum drain height connection must not exceed 3 ft.[0.9 m].

2. A 3/4" hose barb fitting is strapped to the drain hose to connect the drain hose to a wye drain fitting. The service part number for the hose barb is P/N 0512321.

3. The maximum drain flow is 15 US gpm/12.4 imp gpm/60 lpm.

Drain Connection - UL130 (continued)

NOTE

Plumbing connections must comply with national, provincial local plumbing and sanitary codes.

DO NOT REMOVE THE CLAMPS HOLDING THE DRAIN HOSE TO THE BACK OF THE DISHWASHER.

DO NOT CONNECT THE DRAIN HOSE TO A DISPOSER.

DO NOT REDUCE THE SIZE OF THE DRAIN HOSE CONNECTION NOR USE A DOMESTIC DRAIN FITTING.

DO NOT ADD ADDITIONAL LENGTH TO THE DRAIN HOSE.

DO NOT ALLOW THE DRAIN HOSE TO KINK.

For a Direct Drain Connection:

1. Install the drain hose to an 1-1/2" or larger "WYE" vented drain fitting.
2. CONNECTION TO A "TEE" FITTING WILL PREVENT THE DISHWASHER FROM DRAINING COMPLETELY.

DO
connect the dishwasher flexible drain hose to a WYE drain fitting.

DO NOT
connect the dishwasher flexible drain hose to a TEE drain fitting.

For an Indirect Drain Connection:

1. A 1" [25.4mm] minimum air gap must be provided between the outlet of the dishwasher drain hose outlet and the flood-level rim of the floor drain, floor sink or any other locally approved drain receptacle. (See illustration below.)

! VERY IMPORTANT! IMPROPER INSTALLATION OF MACHINE DRAIN HOSE.

Machine drain problems are often the result of improper installation and may not be covered by the limited warranty.

Installation - Model UL130

Pumps and Injection Points - Detergent, Rinse-aid and Sanitizer Dispensing Pumps - UL130

! VERY IMPORTANT !

ALWAYS USE A COMMERCIAL-GRADE NON-CHLORINATED DETERGENT.

PLACE THE CHEMICAL SUPPLY CONTAINERS AS CLOSE TO THE MACHINE AS POSSIBLE.

DO NOT ELEVATE THE CHEMICAL CONTAINERS ABOVE THE FINISHED FLOOR.

! VERY IMPORTANT !

Contact a chemical supplier for detergent and rinse-aid chemicals. The chemical supplier must adjust the chemical dispensing pumps for water hardness and food soil types.

1. The chemical dispensing pumps are located on a center bracket behind the lower-front access panel.
2. Each pump is equipped with 6 feet [1.8 m] of supply tubing, stiffener tubes, and strainers.
3. A RED label marked DETERGENT, a BLUE label marked RINSE-AID and a WHITE Label marked SANITIZER identify the chemical lines.
4. The chemicals enter the wash tank compartment through a fitting located on the rear right-hand side of the wash compartment.

The chemical dispensing pick-up tubes are stowed at the rear of the dishwasher.

On the UL130, chemicals enter the wash tank through a fitting on the rear wall of the tank.

Pumps and Injection Points - Detergent, Rinse-aid and Sanitizer

Dispensing Pumps - UL130

! VERY IMPORTANT! CHEMICAL SQUEEZE TUBES SHOULD BE INSPECTED AND REPLACED EVERY 6 MONTHS

The chemical dispensing pumps are located on the bracket behind the lower-front access panel.

! VERY IMPORTANT !

5.25% sodium hypochlorite (chlorine beach) must be used as a sanitizing agent to provide a minimum concentration of 50 ppm in the final rinse for the USA and 100 ppm in Ontario, Canada. The 50 ppm or 100 ppm concentration must be checked using chlorine test strips to make sure that the proper concentration is maintained.

Pump Priming - Detergent, Rinse-aid and Sanitizer Dispensing Pumps

! VERY IMPORTANT !

The chemical dispensing pumps must be primed before operating the dishwasher and whenever the chemical container is changed.

UL130 Control Panel

1. Make sure the chemical containers are full and the correct pick-up tubes are in their containers.
2. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher will fill with water.
3. Refer to the illustration below and note the two momentary push buttons provided to prime the detergent, sanitizer and rinse aid pumps.
4. Open the dishwasher door and observe the inlet chute on the rear right-hand side of the wash tank.
5. Push and hold the prime push button UP to the DETERGENT position until detergent is observed entering the wash tank compartment. Release the push button.
6. Push and hold the same push button DOWN until sanitizer is observed entering the wash tank compartment. Release the push button.
7. Push and hold the other push button UP to the RINSE AID position until rinse-aid is observed entering the wash tank compartment. Release the push button.
8. Priming is complete.

! ATTENTION !

The amount of dispensed chemical is determined by the run time of the dispensing pump.

1. Adjustment screws are provided for the dispensing pumps and for the wash tank fill. They are located on the right-hand side of the dishwasher behind the lower front access panel.
2. Make sure the chemical containers are full and the pick-up tubes are in their proper containers.
3. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher will fill with water.
4. Run a normal dishwasher cycle and test chemical concentrations according to the chemical supplier's instructions.

CAUTION:

Excessive pressure to the potentiometers when adjusting can result in bent or broken adjusting screws.

1. Each dispensing pump has a clearly marked adjustment screw. Turn the screw CW to increase the run time of the dispensing pump and CCW to reduce the run time of the dispensing pump.
2. The Fill adjustment screw will provide a small change in the tank water level. If a large adjustment is needed, check the incoming water pressure and make sure the fill hose is not kinked. If the above items are okay then the size of the incoming water supply should be checked. The incoming water supply line must be a minimum of 1/2" or larger.

Operation - Model UL130

Loading Dish Racks

! VERY IMPORTANT! Prescrap and rinse wares before loading into the machine.

! VERY IMPORTANT! DO NOT OVERLOAD THE DISH RACK. LOAD ONE DISH RACK INTO THE MACHINE AT A TIME.

Load plates and glasses in a peg rack.

Load cups and bowls in a flat bottom rack.

Load utensils in a single layer in a flat bottom rack.

Load pots and pans in a flat bottom rack.

1. Prescrap and rinse the wares before loading to remove large food particles.

2. Load soiled wares into the dish rack. Place plates and glasses in a peg rack. Place cups and bowls in a flat bottom rack. Place utensils in a single layer in a flat-bottom rack. Place pots and pans in a flat-bottom rack.
   Do not overload the dish rack. Wash one dish rack at a time.

3. Slide one dish rack into the wash compartment making sure that wares do not interfere with the rotating spray arms. Do not wash more than one dish rack at a time.

1. Close the dishwasher front door.
2. Push the dishwasher Power Switch UP to turn the power ON.
3. The power switch will illuminate and the machine will fill with water.
4. Wait until the wash temperature gauge indicates a minimum of 120° F/ 49° C.

RUN THE FIRST CYCLE WITH AN EMPTY DISH RACK TO HEAT THE WASH TANK INTERIOR.

1. Load the dish rack into the machine. Wash one dish rack at a time.
2. Close the door, then press the START BUTTON for 1 second. The green in-cycle light will illuminate and the wash cycle will begin. The total cycle is approximately 141 seconds.
3. Opening the door during a cycle will stop the dishwasher. If the door is open more than 5 seconds the cycle will restart from the beginning, if open less than 5 seconds the cycle will resume where it left off when the dishwasher door is closed.
4. The final rinse cycle begins at the end of the wash cycle. The machine drains and then refills with fresh water hot water. Check the rinse temperature gauge during the final rinse. It must indicate a minimum of 120° F/49°C. The final rinse water is retained for the next wash cycle.
5. When the green cycle light goes out, open the door and remove the rack of clean wares.

! VERY IMPORTANT !

5.25% sodium hypochlorite (chlorine beach) must be used as a sanitizing agent to provide a minimum concentration of 50 ppm in the final rinse for the USA and 100 ppm in Ontario, Canada. The 50 ppm or 100 ppm concentration must be checked using chlorine test strips to make sure that the concentration is maintained.

Extended Wash Mode - Model UL130

The Extended Wash Mode is used to wash heavily soiled items such as pots, pans and other wares that require more washing time than the standard Normal Wash Mode.

The dishwasher will remain in the Extended Wash Mode until the operator exits the mode or 15 minutes has elapsed.

1. Load a dish rack into the dishwasher, close the door and press the START button.
2. The green in-cycle light will illuminate and the dishwasher will begin a normal wash cycle.
3. Wait 10 seconds for the detergent to enter the wash compartment before pressing the EXT WASH button.

Press the EXT WASH button to place the machine into the extended wash mode to clean heavily soiled wares.

1. Press the EXT WASH button to place the dishwasher in the Extended Wash Mode.
2. The green extended wash light will illuminate indicating that the machine is in the Extended Wash Mode.
3. The dishwasher will continue to wash for a maximum of 15 minutes or until the operator presses the EXT WASH button again whichever occurs first.
4. Press the EXT WASH button. The green extended wash light will go out indicating that the dishwasher has returned to the Normal Wash Mode.
5. The dishwasher will finish the wash cycle and perform a final rinse of the wares.

Drain Mode

The dishwasher will enter the drain mode whenever the Power Switch is pushed down to the OFF/DRAIN position.

1. Push the illuminated power switch down to the OFF/DRAIN position. The power switch light will go out.
2. The cycle light will illuminate and the machine will drain.
3. The machine, will flush, perform 3 short drain cycles and then drain completely.
4. The cycle light will go out indicating that the drain cycle is complete.

! VERY IMPORTANT !

Draining Problems Related To Improper Installation.

Problems with machine draining are often the result of improper installation. The drain hose is looped and clamped as shown in the photo below and must not be changed.

The drain hose is looped and clamped and must not be changed. Altering the drain hose routing may result in the machine's inability to drain or may cause the machine to siphon the water out of the machine.

! VERY IMPORTANT! DRAIN AND CLEAN THE DISHWASHER EVERY 2 HOURS OF CONTINUOUS OPERATION, AFTER EACH MEAL PERIOD, AND AT THE END OF THE DAY.

Cleaning the wash tank:

1. Remove the upper and lower spray arms and flush clean in a sink.
2. Remove the scrap screen taking care that debris does not fall off the screen and into the wash tank or sump. Flush the screen clean in a sink. Be sure to back-flush the screen.
3. DO NOT strike the scrap screen on solid surfaces.
4. Check the sump for foreign material.
5. Clean the wash pump strainer in the bottom of the sump.
6. DO NOT scrub the interior with metallic scrub pads.
7. Check the sump heating element for lime deposits and gently remove with a scouring pad. DO NOT USE METALLIC PADS.
8. Wipe the exterior of the dishwasher with a soft clean cloth and a mild detergent. DO NOT USE BLEACH.
9. Leave the door open to aid in overnight drying.

Cleaning the wash arms:

1. There are two combination wash/rinse arms in the wash tank. They are interchangeable.
2. The wash arms are should be removed and thoroughly flushed clean in a sink.
3. Special attention should be paid to the cleaning and inspection of the wash arm bearings making sure they are clean and free of excessive wear.
4. If the bearings are damaged, contact an authorized service agent for replacement.

Scrap Screen and Sump Strainer

1. Lift the scrap screen straight up and out of the machine to prevent food particles from falling into the tank sump.
2. Flush the scrap screen in a remote sink making sure to back-flush both side of the screen.
3. Wipe the tank sump of water and debris.
4. Carefully inspect the sump strainer. This strainer is not removable but must be thoroughly cleaned before reinstalling the scrap screen.

! ATTENTION !

A CLOGGED SUMP STRAINER WILL PREVENT THE PROPER WASHING, RINSING AND DRAINING OF THE MACHINE.

! ATTENTION !

WIPE THE EXTERIOR OF THE MACHINE WITH A SOFT CLOTH AND MILD DETERGENT. DO NOT SPRAY THE EXTERIOR WITH WATER.

LEAVE THE DOOR OPEN TO AID IN OVERNIGHT DRYING.

DANGER:

Death or serious injury may result when de-liming solution is mixed with sodium hypochlorite sanitizing agent. Mixing may cause hazardous gases to form. De-liming solution and other acids must never be mixed with chlorine, iodine, bromine, or fluorine.

CAUTION:

Skin contact with de-liming solutions can cause severe irritation and possible chemical burns. Always wear eye protection, rubber gloves and protective clothing when handling chemicals.

De-lime Mode - Model UL130

The EXT. WASH/DELIME switch is used to the de-lime the machine.

Model UL130 Extended Wash/Delime Push button

Follow the steps below to de-lime the UL130:

1. Open the dishwasher door and remove any dish racks.
2. Turn the power switch on the dishwasher to the ON position.
3. Place the tubing in a container of hot water.
4. Close the door and press the EXT WASH/Delime push button three times.

5. Check the de-liming results and if scale is still present repeat steps 9-11.

6. Remove the detergent and rinse-aid, and sanitizer chemical supply tubing from their chemical supply containers.

7. Press and hold the prime switch UP in the DETERGENT position to flush the detergent from the supply tubing. Release the switch.

8. Press and hold the prime switch DOWN in the SANITIZER position to flush the sanitizer from the supply tubing. Release the switch.

9. Press and hold the rinse-aid prime switch UP in the RINSE AID position to flush the rinse-aid from the supply tubing. Release the switch.

10. Turn the dishwasher power switch to OFF/DRAIN to drain the wash tank. The green cycle light will go out in about 2 minutes.

11. Always wear eye protection, rubber gloves and protective clothing when handling chemicals. Open the door and carefully add the de-liming chemical to the wash tank in accordance with your chemical supplier's instructions. Be careful to avoid splashing.

12. The EXT WASH green indicator light will illuminate and the machine will run for 23 minutes.

13. Push the power switch ON to refill the machine and return the dishwasher to normal operation.

14. Return chemical supply tubing to their containers and prime the chemical lines.

Follow the maintenance schedules below to keep the dishwasher operating most efficiently.

Daily Maintenance

1. Make sure the water supply is on and that the drain is not clogged.
2. Check the temperature gauges and/or displays to ensure they are operating.
3. Make sure the dish racks are in good condition.
4. Check the chemical containers and refill as required.
5. Follow the cleaning procedures provided in the UL130 Cleaning Section.

Weekly Maintenance

1. Perform Steps 1-5 in the Daily Maintenance.
2. Inspect water lines for leaks.
3. Check for water leaks underneath the dishwasher.
4. Make sure the flexible water fill and drain hoses are not kinked.
5. Make sure that the dishwasher is level.
6. Clean accumulated lime deposits from the wash tank heating element.
7. Inspect the scrap screen and replace it if damaged.
8. Check the spray arms and replace or repair if damaged.

Monthly Maintenance

1. Perform the Daily and Weekly Maintenance listed above.
2. Clean the chemical dispenser pick-up tubing for the chemical dispensing pumps.

To clean the pick-up tubing:

1. Remove the pick-up tubes from their containers.
2. Place each tube in a separate container of hot water.
3. Press and hold the PRIME buttons UP and DOWN until water flows into the wash tank compartment.
4. Return the pick-up tubes to their containers.
5. Run 3 empty dishwasher cycles to flush any chemicals from the dishwasher wash compartment.
6. Return the pick-up tubes to their containers and prime the chemical lines.

NOTE: There are no lubrication points on the dishwasher.

Troubleshooting

All Models

Illustrations

Page

Troubleshooting Chart - UH130, UH130B, UH230, UH230B 54

Wash Codes Temperature Display Board - UH130, UH130B, UH230, UH230B, UH330B .....55

Rinse Codes Temperature Display Board - UH130, UH130B, UH230, UH230B, UH330B....56

Booster Codes Temperature Display Board - UH130, UH130B, UH230, UH230B, UH330B.....57

Timer Board Connection Diagram - All Models 58

Timer Board Diagnostic Testing - UH130, UH130B, UH230, UH230B ....59

Temperature Display Board Power Terminal Connections....60

Temperature Display Board M3-M4 Selector Slide Switch....61

Temperature Display Board Diagnostics 62

Booster/Wash Tank Heater Interlock Circuit Operation -UH130B, UH230B, UH330B......63

Condition Cause Solution
Dishwasher will not run.	Door not closed.Main power OFF.Dishwasher OFF.	Close door completely.Check breaker on panel.Turn dishwasher power switch ON.
Low or no water.	Main water supply off.Fill hose kinked.Low incoming water pressureSolenoid valve defective.Solenoid strainer clogged.Circuit board fuse blown.	Open supply valve.Straighten fill hose.Set flowing water pressure to 20-22 PSI.Install repair kit or replace.Clean strainer.Contact service agent..
Chemicals won't feed into dishwasher.	Chemical supply low.Supply tubing damaged.Supply tubing kinked.Pick-up tube cloggedChemical circuit board fuse blown.	Refill chemical container.Replace tubing.Straighten tubing.Clean/replace tube.Contact service agent.
Low water pressure pumped from wash spray arms.	Clogged scrap screen.Clogged spray arms.Clogged pump intake screen.	Clean scrap screen.Clean spray arms.Inspect sump and clean pump intake screen.
Poor wash results.	Excessively hard water.Water temperature low.Thermistor defective.(See chemicals won't feed above.) (See low or no water above.) Detergent injector defective.Chemical circuit board fuse blown.Wares incorrectly loaded.in dishrack.Booster high limit tripped.Wash tank high limit tripped.	Contact chemical supplier.Raise incoming water temperature to 140°FReplace thermistor.(See chemicals won't feed above.) (See low or no water above.)Replace squeeze tube.Replace injector motor.Clean tubing and pick-up.Contact service agent.Reposition wares or reduce amount of wares in dish racks.Reset or replace high limit.Reset or replace high limit.
Water has drained out of the wash tank while the dishwasher was idle.	Anti-siphon loop in drain hose has been removed.Drain hose clamp is not holding the drain hose in proper position.Building plumbing does not provide correct air vent to prevent siphoning.	Re-route drain hose.DO NOT STRETCH HOSEReplace/adjust hose clamp making sure goose-neck is maintained.Contact service Agent and/or plumber.
Dishwasher stays in wash cycle.	Incoming water supply coldRinse Sentry extends wash mode for a maximum time of 5-minutes to allow final rinse water booster temperature to reach 180°F/82°C.Dishwasher is operating in Extended Wash Mode.(UH230B, Only)	Raise incoming water temperature.Adjust/replace final rinse booster thermistor.Push EXT WASH button to exit the Extended Wash mode.

Digital Temperature Display Codes

Display codes that appear in the display windows indicate the operating condition of the machine. Refer to the illustrations below for the meaning of the codes.

Wash Display Codes

Rinse Display Codes

Booster Display Codes

Error Codes for Booster and Final Rinse Thermistors Only.

0512934

January 2009
Solid State Timer P/N 0712105
Timer Connection Diagram

Diagnostic Testing for the Solid State Timer Board, P/N 0712105

Beginning with S/N W081217467 and above

1

Before testing, Press the dishwasher power switch to OFF/DRAIN and allow the machine to complete the drain cycle.

Check the incoming voltages.

2

With the Power switch in the OFF/DRAIN position, press the START button 2 times.

If the drain valve opens and closes 5 times then the DRAIN VALVE is okay.

3

Open the door.

If the green cycle indicator light blinks continuously for 10 seconds, then the DOOR SWITCH and the CYCLE LIGHT are okay.

Indicator light

4

Press and release the START button.

If the green cycle indicator light flashes then the START BUTTON is okay.

Indicator light

5

With the Power switch in the OFF/DRAIN position, press the START button 3 times.

The timer board and the following components are okay if the components run consecutively for a few seconds in the following order:

1. Fill Valve
2. Detergent Pump
3. Rinse-aid Pump
4. Drain Valve opens and then closes
5. Wash Pump
6. Drain Pump or Sanitizer Pump

6

Troubleshooting - See below if one or more of the components in Step 5 did not run.

CONDITION

POSSIBLE CAUSE/SOLUTION

A single component in Step 5 does not run. Check the component

nt that did not run.

Wash pump only component that runs (Except UH330B, 601HT)

Check timer bd 4A fuse. (All except UH330B & 601HT)

Wash pump only component that runs (UH330B, 601HT ONLY)

Check timer bd 8A fuse. (UH330B & 601HT ONLY)

Wash pump only component that won't run. 4A/8A fuse okay.

Check pump/motor - see troubleshooting guide.

None of the components in Step 5 run. Check neutral wire - see troubleshooting guide.

0512979 rev. A

Undercounter Temperature Dispaly Board - P/N 0512106-1 M3 - M4 Model Selector Slide Switch
i ATENTION — VERY IMPORTANT i

Before installing a new version display board, you must select the model type using the M3 - M4 Switch located at the bottom center of the circuit board.

Slide the selector switch to the M3 position for machinings equipped with thermostats.

MA Setting

Slide the selector switch to the MA position for machinics equipped with thermostors only.

NOTE:

The machine will not operate properly if the selector switch is set to the wrong position.

P/N 0512106-1 Undercounter Temperature Display Board

Diagnosics

A - When testing the circuit board operation, disconnect the harm- ess from this plug. The wash and rinse displays will display E.B - Push and hold the rinse test pushbutton. A numerical value of 179-180 should appear in the rinse temperature display window indicating the circuit board is operating normally.C - Push and hold the wash test pushbutton for 10 seconds indicating the circuit board is operating normally.A numerical value of 140 should appear in the wash temperature display window indicating the circuit board is operating normally.A F/C Slide switch is provided on the board to change the display from the factory default setting of °F to the optional °C.D - Turn clockwise to increase the booster temperature. Full range is 3/4 turns 180-200°F. DO NOT FORCE PAST THE STOPS.E - Turn clockwise to increase the wash temperature. Full range is 3/4 turns 120-160°F. DO NOT FORCE PAST THE STOPS.

Temperature Adjustments

When performing diagnoses the values are displayed in °F, seven if the display is set for °C.

Booster Heater/Wash Tank Heater Interlock Circuit Operation

For Models UH130B, UH230B The booster heater/wash tank heater interlock circuit removes power from the wash tank heater whenever the booster heater contactor energizes. The illustration below shows how the booster heater contactor is wired.

The booster heater contactor is located on the center of the base behind the lower front access panel.

Interlock Circuit Operation

1. The dishwasher fills with water when the main power switch on the dishwasher is turned on. The booster heater thermistor calls for heat which energizes the booster heater contactor.
2. The auxiliary contact on the top of the contactor opens and removes power from the wash tank heater.
3. When the booster heater thermister is satisfied, the booster heater contactor de-energizes and the auxiliary contacts close applying power to the wash tank heater.
4. This operation is repeated whenever the booster thermistor calls for heat.

This Page Intentionally Left Blank

Model UH330B High Temperature Undercounter Dishwasher with Heat Recovery and Built-in Booster

Receiving - UH330B

NOTE:

The installation of your dishwasher must be performed by qualified service personnel familiar with food service equipment and must comply with all local health codes.

Problems due to improper installation are not covered by the Limited Warranty.

NOTE:

The installation of the dishwasher must comply with all local electrical, plumbing, health and safety codes or in the absence of local codes, installed in accordance with the applicable requirements in the National Electrical Code, NFPA 70, Canadian Electrical Code (CEC), Part 1, CSA C22.1; and the Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, NFPA 96.

Turn to the front of this manual and follow the instructions to register your product online or by fax.

Placement - UH330B

CAUTION:

Be careful when lifting and moving the dishwasher to prevent damage to the machine.

NOTE:

The installation of the dishwasher must comply with local health codes.

NOTE:

The dishwasher front-to-back dimension with the door open is 42-3/8" [1076 mm]. The clearance to the back wall is 2" [51mm].

1. Inspect the outside of the dishwasher carton for signs of damage.
2. Remove the carton and inspect the dishwasher for damage.
3. Check for any options or accessories that may have shipped with your dishwasher.
4. Compare the installation site utility connections with the dishwasher utility connections and make sure they are the same.
5. The dishwasher can be installed as a free-standing unit or under a counter-top. The typical counter-top height in most locations is 34" [864 mm]. It is highly recommended that the underside of the counter-top be clad in metal.
6. Under counter installations should provide storage space for the dishwasher chemical supply containers. Do not elevate the containers above the finished floor.
7. Chemical supply containers should be placed as close to the machine as possible and the chemical tubing taped to the back of the machine should be repositioned before permanently placing the machine.
8. The dishwasher has 4 adjustable feet for leveling.
9. Place the dishwasher in its permanent location. and level it front-to-back and side-to-side.

Electrical Connections - UH330B with Built-in Booster

1PH and 3PH Wiring Diagrams

! ATTENTION !

ALL DISHWASHERS ARE SHIPPED FROM THE FACTORY WIRED FOR SINGLE PHASE OPERATION UNLESS SPECIFIED AT THE TIME OF ORDER.

IF YOU ARE CONVERTING A SINGLE PHASE MACHINE TO THREE PHASE BE SURE

TO FOLLOW THE BOOSTER WIRING INSTRUCTIONS ON PAGES 71-72.

Refer to the connection diagrams below to connect main incoming power to the dishwasher.

THREE PHASE POWER CONNECTION Models UH330B

! VERY IMPORTANT !

THE ELECTRICAL POWER MUST BE A 4-WIRE PLUS GROUND SUPPLY WHICH INCLUDES A CURRENT CARRYING NEUTRAL.

HOW TO CONNECT 3 PHASE POWER

1. Check the data plate on the front of the dishwasher for the phase of the machine.

If the data plate says the machine is 3 Phase, then connect a 3 PH power supply.

1. Remove the lower access panel.
2. Pull power connection box forward and out.
3. The Main Terminal Block has terminals for L1, L2, L3, Neutral and Ground.
4. Connect ground, then connect L1, L2, L3 to 208-230VAC.
5. Connect a current carrying neutral to N.
6. Main power connections are complete.

SINGLE PHASE POWER CONNECTION Models UH330B

! VERY IMPORTANT !

THE ELECTRICAL POWER MUST BE A 3-WIRE PLUS GROUND SUPPLY WHICH INCLUDES A CURRENT CARRYING NEUTRAL.

HOW TO CONNECT 1 PHASE POWER

1. Check the data plate on the front of the dishwasher for the phase of the machine.

If the data plate says the machine is 1 Phase, then connect a 1 PH power supply.

1. Remove the lower access panel.
2. Pull power connection box forward and out.
3. The Main Terminal Block has connections for L1, L2, L3, Neutral and Ground.
4. Connect ground, then connect L1, L2 to 208-230VAC.
5. Connect a current carrying neutral to N.

DO NOT CONNECT POWER TO L3.

1. Main Power connections are complete.

Connecting Incoming Power to the Main Terminal Block

for 1PH and 3PH Machines with Boosters - UH330B

WARNING:

Electrocution or serious injury may result when working on an energized circuit.

Disconnect power at the main breaker or service disconnect switch before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to indicate that work is being performed on the circuit.

! VERY IMPORTANT !

PROVIDE A 3 FEET/1 METER SERVICE LOOP IN THE POWER SUPPLY

CABLE TO SERVICE THE DISHWASHER.

! SINGLE PHASE POWER REQUIREMENT !

SINGLE PHASE UH330B

The electrical power must be a 3-wire plus ground supply which

includes a current carrying neutral.

! THREE PHASE POWER REQUIREMENT !

THREE PHASE UH330B

The electrical power must be a 4-wire plus ground supply which

includes a current carrying neutral.

Connecting Incoming Power to the Main Terminal Block for 1PH and 3PH Machines with Boosters - UH330B

Refer to the photo below:

1. Remove the lower front dishwasher panel.
2. Remove the retaining fasteners (A) from the swing-out brackets and swing the chemical pump bracket (B) and the chemical circuit board bracket (C) out of the way as shown.
3. Remove the screw holding the main terminal block cover and set the cover aside.

(continued on next page)

UH330B - Connecting Incoming Power to the Main Terminal Block for 1PH and 3PH

Refer to the photo below:

1. Provide a 3 foot/1 meter service loop in the power supply cable to service the machine
2. Route the power cable from the rear of the machine to the terminal block making sure the cable does not touch the booster heater.
3. Connect the power cable to the terminal block bracket using a suitable strain relief connector.
4. Connect the power wires according to the wiring diagrams on page 67 for either single phase or three phase operation.
5. Return the main terminal block bracket to its original position making sure the power cable does not touch the booster tank. Install the retaining screws.
6. Swing the chemical pump bracket and the chemical board back into position and secure with the existing fasteners.

Booster Heater Conversion from 1PH to 3PH Operation

! VERY IMPORTANT! THE BOOSTER HEATER IS WIRED FOR 1PH OPERATION WHEN SHIPPED. FOLLOW THE INSTRUCTIONS BELOW TO WIRE THE BOOSTER FOR 3PH.

WARNING:

Electrocution or serious injury may result when working on an energized circuit.

Disconnect power at the main breaker or service disconnect switch before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to indicate that work is being performed on the circuit.

1. To convert the booster heater from single phase to three phase operation, locate the booster wire labeled 1H3 that is cable-tied to the booster hose.

2. Remove the shrink insulation from the terminal and connect to the booster heater element as shown in the wiring diagram on page 72.

The three phase booster wire (1H3) is cable-tied to the hose adjacent to the booster tank.

Booster Heater Conversion from 1PH to 3PH Operation (continued)

! VERY IMPORTANT !

1. Disconnect the existing booster heater wires and change the booster heater element jumpers as shown in the illustration below
2. Connect wires 1H1, 1H2, and 1H3 as shown below.

Wiring Diagram - Booster heater element connections shown for 1 phase and 3 phase operation.

1. A replacement 3PH data plate is stowed on the back of the lower front access panel.
2. Replace the existing 1PH data plate on the front of the panel with the new 3PH data plate. Discard the 1PH data plate.
3. Refer to the instructions on the next page to connect the main incoming power to the machine.

Completing the 1PH to 3PH Electrical Conversion

! ATTENTION! CHANGE THE DATA PLATE ON THE LOWER FRONT PANEL OF THE MACHINE

AFTER THE MACHINE IS WIRED FOR 3PH AND THE BOOSTER HEATER IS CONNECTED FOR 3PH.

1. The data plate on the dishwasher lower front panel must be changed after the machine is converted from single phase operation to three phase operation.
2. Locate the replacement data plate stowed on the back of the lower front panel.
3. Remove the paper backing from the label and carefully place it over the existing data plate label making sure it covers the label completely.
   4 Re-install the lower front panel to complete the conversion.

A three phase data plate is located on the back of the lower front panel.

NOTE

Plumbing connections must comply with national, provincial local plumbing and sanitary codes.

! ATTENTION! THE MODEL UH330B REQUIRES A SINGLE 1/2" INCOMING COLD WATER SUPPLY LINE

Model UH330B

1. Equipped with a 6 ft. flexible cold water fill hose with a 3/4" female garden hose connector.
2. A 1/2" or larger main incoming supply line must be installed to the dishwasher.
3. We recommend that a 1/2" or larger shut-off valve be installed in the main water supply, as close to the dishwasher as possible for servicing.
4. The UH330B has a built-in flow control. The flowing incoming cold water supply pressure must be between 25-95 psi.
5. A water hardness of 3 grains/gal (US) [51.3 mg/L] or less is recommended.

Side View Plan View

CW = 1/2" Cold Water Supply

55-80°F/12-26°C

! VERY IMPORTANT! IMPROPER INSTALLATION OF MACHINE DRAIN HOSE.

Machine drain problems are often the result of improper installation and may not be covered by the limited warranty.

! VERY IMPORTANT !

Do not connect the drain hose to a disposer. The dishwasher will not drain correctly.

! IMPORTANT !

Make sure that the flexible water supply and drain hoses are not kinked.

1. The UH330B is a pumped drain and is equipped with a 6 ft.. 5/8" I.D. drain hose. The maximum drain height connection must not exceed 3 ft.[1 m].
2. The drain hose is located at the rear of the dishwasher, and is secured to the rear of the machine provide an anti-siphoning loop in the drain hose.
3. A 3/4" hose barb fitting is strapped to the drain hose prior to shipment. The service part number for the hose barb is P/N 0512321.
4. Additional plumbing parts must be supplied by the plumbing installer.
5. The maximum drain flow is 15 US gpm/12.4 imp gpm/60 lpm.

Side View Plan View
DH = Drain Hose 5/8" I.D., 6 ft [1829 mm] Long

Drain Connection - Model UH330B (continued) -

NOTE

Plumbing connections must comply with national, provincial local plumbing and sanitary codes.

DO NOT CONNECT THE DRAIN HOSE TO A DISPOSER.

DO NOT REDUCE THE SIZE OF THE DRAIN HOSE CONNECTION.

DO NOT ADD ADDITIONAL LENGTH TO THE DRAIN HOSE.

DO NOT ALLOW THE DRAIN HOSE TO KINK.

For a Direct Drain Connection:

1. Install the drain hose to an 1-1/2" or larger "WYE" vented drain fitting.
2. CONNECTION TO A "TEE" FITTING WILL PREVENT THE DISHWASHER FROM DRAINING COMPLETELY.

DO
connect the dishwasher flexible drain hose to a WYE drain fitting.

DO NOT
connect the dishwasher flexible drain hose to a TEE drain fitting.

For an Indirect Drain Connection:

1. A 1" [25.4mm] minimum air gap must be provided between the outlet of the dishwasher drain hose outlet and the flood-level rim of the floor drain, floor sink or any other locally approved drain receptacle. (See illustration below.)

! VERY IMPORTANT !

ALWAYS USE A COMMERCIAL-GRADE NON-CHLORINATED DETERGENT. PLACE THE CHEMICAL SUPPLY CONTAINERS AS CLOSE TO THE MACHINE AS POSSIBLE. DO NOT ELEVATE THE CHEMICAL CONTAINERS ABOVE THE FINISHED FLOOR.

! VERY IMPORTANT !

Contact a chemical supplier for detergent and rinse-aid chemicals. The chemical supplier must adjust the chemical dispensing pumps for water hardness and food soil types.

Chemical Dispensing Pumps

1. The detergent and rinse-aid pumps are located on the lower left-side of the machine behind the lower-front access panel.
2. Each pump is equipped with 6 feet [1.8 m] of pick-up tubes consisting of supply tubing, stiffener tubes, and strainers.
3. The pick-up tubes are stowed on the back of the machine for shipping.
4. A red label marked DETERGENT and a blue label marked RINSE-AID identify the chemical lines.
5. The chemical squeeze tubes should be inspected and replaced every six months.

The chemical dispensing pumps are located on the left-side behind the lower front panel of the dishwasher.

The chemical dispensing pick-up tubes are stowed on the back of the dishwasher.

Chemical Connections - Model UH330B (continued)

! VERY IMPORTANT !

ALWAYS USE A COMMERCIAL-GRADE NON-CHLORINATED DETERGENT. PLACE THE CHEMICAL SUPPLY CONTAINERS AS CLOSE TO THE MACHINE AS POSSIBLE. DO NOT ELEVATE THE CHEMICAL CONTAINERS ABOVE THE FINISHED FLOOR.

Chemical Injection Points

1. The detergent enters the wash tank compartment through a fitting at the right rear of the wash compartment.
2. Rinse-aid enters the final rinse through a fitting in the front of the booster tank.

Chemical Connections - Model UH330B

Priming the Dispensing Pumps

! VERY IMPORTANT !

The chemical dispensing pumps must be primed before operating the dishwasher and whenever the chemical container is changed.

UH330B Control Panel

1. The chemical dispensing pump supply lines must be primed before they will pump the chemicals properly.

2. Make sure the chemical containers are full and the correct pick-up tubes are in their containers.

3. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher will fill with water.

4. Open the dishwasher door, then push and hold the prime push button UP to the DETERGENT position until detergent is observed entering the wash tank compartment. Release the push button.

5. Push and hold the prime push button DOWN to the Rinse-aid position until you see air bubbles moving through the rinse-aid tubing, then continue to hold the prime push button for approximately 1 minute and then release.

6. Close the door to complete the priming operation.

(continued on next page)

Detergent and Rinse-aid Dispensing Pump Adjustments - Model UH330B

Chemical Dispensing Pump Adjustments

! ATTENTION !

The amount of dispensed chemical is determined by the run time of the dispensing time.

Refer to the photo below:

1. The chemical dispensing pump run adjustment screws are located on the end of the chemical circuit board swing-out bracket.
2. It is not necessary to swing the bracket out to make adjustments, but if desired, remove the mounting nut (A) and swing the bracket (B) out and to the right.
3. Refer to the next page for adjustment instructions.

! VERY IMPORTANT !

Contact a chemical supplier for detergent and rinse-aid chemicals. The chemical supplier must adjust the chemical dispensing pumps for water hardness and food soil types.

Detergent and Rinse-aid Dispensing Pump Adjustments - Model UH330B

Chemical Dispensing Pump Adjustments (continued)

! ATTENTION! THE FILL AND SANITIZER ADJUSTMENT SCREWS ARE NOT USED ON THE UH330B MACHINE.

Refer to the photo below:

To adjust the amount of chemicals dispensed by the pumps:

1. Make sure the chemical containers are full and the pick-up tubes are in their proper containers.
2. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher will fill with water.
3. Run a normal dishwasher cycle and test detergent and rinse-aid concentrations according to the chemical supplier's instructions.

CAUTION:

Excessive pressure to the potentiometers when adjusting can result in bent or broken adjusting screws.

1. Each dispensing pump has a clearly marked adjustment screw. Turn the screw CW to increase the run time of the dispensing pump and CCW to reduce the run time.

Operation - Model UH330B

Loading Dish Racks

! VERY IMPORTANT! DO NOT OVERLOAD THE DISH RACK. LOAD ONE DISH RACK INTO THE MACHINE AT A TIME.

1. Prescrap and rinse the wares before loading to remove large food particles.

2. Load soiled wares into the dish rack. Place plates and glasses in a peg rack. Place cups and bowls in a flat bottom rack. Place utensils in a single layer in a flat-bottom rack. Place pots and pans in a flat-bottom rack.

Do not overload the dish rack. Wash one dish rack at a time.

1. Slide one dish rack into the wash compartment making sure that wares do not interfere with the rotating spray arms. Do not wash more than one dish rack at a time.

Prescrap and rinse wares before loading into the machine.

Load plates and glasses in a peg rack.

Loading Dish Racks (continued)

Load pots and pans in a flat-bottom rack.

Load utensils in a single layer in a flat-bottom rack.

Load cups and bowls in a flat-bottom rack.

NEVER stack dish racks. Wash one dish rack at a time.

Operation - Model UH330B

UH330B Control Panel

The illustration below shows the operator controls and temperature displays for the UH330B.

Wash Mode

1. Close the door.
2. Push the dishwasher ON-OFF/DRAIN switch UP to turn the power ON.
3. The power switch will illuminate and the machine will fill with water.
4. Wait approximately 30 minutes until the wash temperature gauge indicates a minimum of 150° F/66°C.
5. Scrap the wares to remove large food particles.
6. Load the dish rack into the machine. Wash one dish rack at a time.

Push the Cycle button once for Extra Cycle. Push twice for Heavy Cycle. Push the Cycle button three times to cancel the selection and return to Normal Cycle.

1. The NORMAL cycle setting is the default cycle and does not have a green indicator light. The normal cycle is approximately 2-1/2 minutes long.
2. The EXTRA cycle is selected by pushing the cycle button once. The EXTRA green indicator light will flash for 15 seconds. Pressing the START button before the flashing EXTRA indicator stops flashing starts a EXTRA wash cycle of approximately 3-1/2 minutes long. The EXTRA green indicator light will come on, and the green indicator light above the start switch will illuminate indicating the machine is in the wash mode.

(continued on next page)

1. The HEAVY cycle is selected by pushing the cycle button twice. The HEAVY green indicator light will flash for 15 seconds. Pressing the START button before the flashing HEAVY indicator light stops flashing starts the heavy wash cycle of approximately 4-1/2 minutes long. The HEAVY green indicator light will come on and the green indicator light above the start switch will illuminate indicating the machine is in the wash mode.
2. Opening the door during a cycle will stop the dishwasher. The cycle will resume automatically if the dishwasher door is closed within 5 seconds. If the door is open for more than 5 seconds the cycle will start from the beginning of the cycle.
3. The final rinse cycle begins at the end of the wash cycle. The machine drains and retains a portion of the final rinse water for the next wash cycle.
4. Check the rinse temperature gauge during the final rinse. It must indicate a minimum of 180-195° F/82-91°C. The final rinse water is retained for the next wash cycle.
5. When the green cycle light goes out, open the door and remove the rack of clean wares.

! ATTENTION! DOOR LEFT OPEN DURING WASH CYCLE

If the dishwasher door is left open for more than 5 seconds during the wash mode the dishwasher cycle will reset to the beginning of the selected wash cycle.

Rinse Sentry Mode

! ATTENTION! RINSE SENTRY MODE WILL EXTEND WASH CYCLE TIME

In the event that the final rinse temperature inside the booster tank has not reached 180-195° F/82-91°C after the wash cycle, the rinse sentry will extend the wash cycle time until the booster reaches 180-195° F/82-91°C. If the proper temperature is not reached within 5 minutes, the machine will leave the rinse sentry mode and complete the cycle.

! VERY IMPORTANT !

Draining Problems Related To Improper Installation.

Problems with machine draining are often the result of improper installation.

NEVER EXTEND OR ADD LENGTH TO THE DRAIN HOSE.

Drain Mode

The dishwasher will enter the drain mode whenever the ON-OFF/DRAIN power switch is pushed down to the OFF/DRAIN position. The switch is located on the left side of the control panel.

IF THE ON-OFF/DRAIN SWITCH IS PLACED IN THE OFF/DRAIN POSITION FOR MORE THAN 3 SECONDS, THE DISHWASHER WILL CONTINUE TO DRAIN EVEN IF THE SWITCH IS PUSHED BACK TO THE ON POSITION.

1. Remove any dish rack that may be inside the machine.
2. Push the illuminated power switch down to the OFF/DRAIN position. The power switch light will go out.
3. The cycle light will illuminate and the machine will drain.
4. The cycle light will go out indicating that the drain cycle is complete. DO NOT OPEN THE DOOR UNTIL THE LIGHT GOES OUT.

! VERY IMPORTANT! DRAIN AND CLEAN THE DISHWASHER EVERY 2 HOURS OF CONTINUOUS OPERATION, AFTER EACH MEAL PERIOD, AND AT THE END OF THE DAY.

! ATTENTION! DO NOT USE STEEL WOOL SCRUB PADS TO CLEAN THE MACHINE. DO NOT SPRAY THE EXTERIOR OF THE MACHINE WITH WATER.

To clean your machine:

1. Open the door and remove any dish rack inside the machine.
2. Drain the machine according to the instructions on the previous page.
3. Refer to the photo below. Remove the upper and lower wash and rinse arms.
4. Clean the overflow guard by hand with it installed in the machine.

(continued on next page)

Cleaning - Model UH330B

Rinse Arms

1. There are two rinse arms. They are interchangeable.
2. Remove the spindle assembly and end plugs in each pipe and flush the rinse pipes.
3. Inspect the rinse arm bearings for wear and replace as necessary.
4. Clean the rinse arm nozzles with a small paper clip.
5. Reassemble the rinse arm assemblies.

Wash Arms

1. There are two interchangeable wash arms.
2. Flush the wash arms thoroughly in a sink.
3. Inspect the wash arm bearings for wear and replace as necessary.

Scrap Screen and Sump Strainer

1. Lift the scrap screen straight up and out of the machine to prevent debris from falling into the tank sump.
2. Flush the scrap screen in a remote sink making sure to back-flush both sides of the screen.
3. Wipe the tank sump of water and debris.
4. Carefully inspect the sump strainer. This strainer is not removable but must be thoroughly cleaned before reinstalling the scrap screen.

! ATTENTION !

A CLOGGED OR RESTRICTED SUMP STRAINER WILL PREVENT THE PROPER WASHING, RINSING AND DRAINING OF THE MACHINE.

! ATTENTION !

WIPE THE EXTERIOR OF THE MACHINE WITH A SOFT CLOTH AND MILD DETERGENT. DO NOT SPRAY THE EXTERIOR WITH WATER.

LEAVE THE DOOR OPEN TO AID IN OVERNIGHT DRYING.

De-liming Cautions and Warnings

A de-liming agent must be used in accordance with your chemical supplier's instructions.

DANGER:

Death or serious injury may result when de-liming solution is mixed with sodium hypochlorite sanitizing agent. Mixing may cause hazardous gases to form. De-liming solution and other acids must never be mixed with chlorine, iodine, bromine, or fluorine.

CAUTION:

Skin contact with de-liming solutions can cause severe irritation and possible chemical burns. Always wear eye protection, rubber gloves and protective clothing when handling chemicals.

Follow the procedures below to de-lime the UH330B dishwasher.

1. Open the dishwasher door and remove any dish racks.
2. Turn the power switch on the dishwasher to the ON position.
3. Remove the detergent and rinse-aid chemical supply tubing from their chemical supply containers.
4. Place the tubing in a container of hot water.
5. Press and hold the prime switch UP in the DETERGENT position to flush the detergent from the supply tubing. Release the switch.
6. Press and hold the prime switch DOWN in the RINSE AID position to flush the rinse-aid from the supply tubing. Release the switch.
7. Turn the dishwasher power switch to OFF/DRAIN to drain the wash tank. The green cycle light will go out in about 2 minutes.
8. Always wear eye protection, rubber gloves and protective clothing when handling chemicals. Open the door and carefully add the de-liming chemical to the wash tank in accordance with your chemical supplier's instructions. Be careful to avoid splashing.
9. Close the door and press the CYCLE push button three times. The green cycle indicator light will illuminate and the machine will run for 23 minutes.
10. Check the de-liming results and if scale is still present repeat steps 8-9.
11. Turn the power switch ON to refill the dishwasher and to return the dishwasher to normal operation
12. Return chemical supply tubing to their containers and prime the chemical lines.

Model UH330B - Maintenance

Follow the maintenance schedules below to keep the dishwasher operating efficiently.

Daily Maintenance

1. Make sure the water supply is on and that the drain is not clogged.
2. Check the temperature displays to ensure they are operating.
3. Make sure the dish racks are in good condition.
4. Check the chemical containers and refill as required.
5. Follow the cleaning procedures provided in the Cleaning Section.

Weekly Maintenance

1. Perform Steps 1-5 in the Daily Maintenance.
2. Inspect water lines for leaks.
3. Check for water leaks underneath the dishwasher.
4. Make sure the flexible water fill and drain hoses are not kinked.
5. Make sure that the dishwasher is level.
6. Clean accumulated lime deposits from the wash tank heating element.
7. Inspect the scrap screen and replace it if damaged.
8. Check the spray arms and replace or repair if damaged.

Monthly Maintenance

1. Perform the Daily and Weekly Maintenance listed above.
2. Clean the chemical dispenser pick-up tubing.

To clean the pick-up tubing:

1. Remove the pick-up tubes from their containers.
2. Place each tube in a separate container of hot water.
3. Press and hold the PRIME buttons UP and DOWN until water flows into the wash tank compartment.
4. Return the pick-up tubes to their containers and prime the chemical lines.
5. Drain and refill the dishwasher.

NOTE: There are no lubrication points on the dishwasher.

Condition Cause	Solution
Dishwasher will not run.	Door not closed.Main power OFF.Dishwasher OFF.Circuit board fuse blown.	Close door completely.Check breaker on panel.Turn dishwasher power switch ON.Contact service agent.
Low or no water.	Main water supply off.Fill hose kinked.Low incoming water pressureSolenoid valve defective.Solenoid strainer clogged.	Open supply valve.Straighten fill hose.Set flowing water pressure to 25-95 PSI.Install repair kit or replace.Clean strainer.
Chemicals won't feed into dishwasher.	Chemical supply low.Supply tubing damaged.Supply tubing kinked.Pick-up tube cloggedChemical circuit board fuse blown.Pump squeeze tube defective.	Refill chemical container.Replace tubing.Straighten tubing.Clean/replace tube.Contact service agent.Replace squeeze tube.
Low water pressure pumped from wash spray arms.	Clogged scrap screen.Clogged spray arms.Clogged pump intake.	Clean scrap screen.Clean spray arms.Inspect sump and clean pump intake.
Poor wash results.	Excessively hard water.Thermistor defective.(See chemicals won't feed above.) (See low or no water above.) Detergent injector defective.Chemical circuit board fuse blown.Wares incorrectly loaded.in dishrack.Booster high limit tripped.Wash tank high limit tripped.Rinse arm nozzles clogged.	Contact chemical supplier.Replace thermistor.(See chemicals won't feed above.) (See low or no water above.)Replace squeeze tube.Replace injector motor.Clean tubing and pick-up.Contact service agent.Reposition wares or reduce amount of wares in dish racks.Reset or replace high limit.Reset or replace high limit.Clean nozzles with small paper clip.
Water has drained out of the wash tank while the dishwasher was idle.	Anti-siphoning loop in drain hose has been removed.Drain hose was extended.Drain hose clamp is not holding the drain hose in proper position.Building plumbing does not provide correct air vent to prevent siphoning.	Re-route drain hose.DO NOT STRETCH HOSEReplace/adjust hose clamp making sure goose-neck is maintained.Contact service Agent and/or plumber.
Dishwasher stays in wash cycle.	Rinse Sentry extends wash mode for a maximum time of 5-minutes to allow final rinse water booster temperature to reach 180°F/82°C.	Contact service agent.

Follow the instructions below to quickly check the status of many machine components.

! ATTENTION! Refer to pages 55-63 for additional troubleshooting information.

This Page Intentionally Left Blank

Service Replacement Parts

Illustrations

Page

Wash Pump/Motor Assembly - All Models 96

Base Assembly - All Models....98

Fill Piping Assembly - UH130, UH130B, UL130, UH330B 102

Fill Solenoid Valve - UH130, UH130B, UL130, UH330B 104

Fill Piping Assembly - UH230, UH230B....106

Fill Rinse Piping Assembly - UH230, UH230B....108

Final Rinse Piping - UH330B....110

Heat Recovery Assembly - UH330B....112

Booster and Pressure Switch Assemblies - UH330B....114

Fill Chute Assembly - UH130, UH130B, UL130....116

Chemical Dispensing Pumps - UH130, UH130B, UH230, UH230B 118

Chemical Dispensing Pumps - UH330B....120

Chemical Dispensing Pumps - UL130....122

Booster Assembly - UH130B, UH230B 124

Power Input Block and Cord Assemblies - All Models....126

Timer Control Board Assembly - All Models 128

Wash and Rinse Spray Arms and Drain Valve - UH230, UH230B, UH330B ....130

Wash/Rinse Spray Arm and Drain Valve - UH130, UH130B, UL130 132

Control Panel - UH130, UH130B 134

Control Panel - UH230, UH230B....136

Control Panel - UH330B....138

Control Panel - UL130 140

Panels - UH130, UH130B, UH230, UH230B, UL130....142

Panels - UH330B....144

Door Assembly - All Models....146

Dish racks, Line Strainer, PRV....148

Item No.

Part No.

Description

Qty.

1 0512347 CAPACITOR 40μF 1

2 0512101 PUMP/MOTOR ASSEMBLY COMPLETE 1

115VAC/60/1

3 0313394 BRACKET, WASH PUMP 1

4 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8" SST 2

5 110285 GASKET 1

6 114139 SEAL 1

7 0512345 IMPELLER 1

8 0501478 WASHER, PLAIN, 17/64" 1

9 106482 WASHER, LOCK, 1/4" 1

10 114144 NUT, M6 1

11 0512340 SCREW, M4, PHIL, PAN HD. 9

12 0512341 VOLUTE, PUMP 1

13 114137 BACKPLATE, PUMP 1

14 107337 NUT, M4 9

15 0513131 COVER, REAR MOTOR FAN 1

NOTE: The pump motor is not sold separately.

Base Assembly - All Models

Item No.	Part No.	Description	Qty.
1	0512136	SCREEN, SCRAP ASSY. 1
2	0513324	FLANGE, PUMP SUCTION 1
3		0513677	O-RING	A/R
4	0512169	HEATER, 120VAC 750W) (UL130) 1
-	0512426	HEATER, 240VAC 2000W (All except UL130) 1
5		0512099	O-RING	1
6	0508872	ADAPTOR, THERMOMETER (UL130 Only) 1
7		0512107	THERMOMETER, WASH TANK (UL130 Only)
8	108954		NUT, GRIP 6-32 WITH NYLON INSERT SST	2
9	113604		THERMOSTAT, HI-LIMIT BI-METAL SNAP, 212°F	1
10		0512299	ADAPTOR, THERMISTOR	1
11		0513310	THERMISTOR, 10 KΩ, 2 WIRE ASSY, WASH TANK(All except UL130)	1
12		201029-1	NUT, LOCK 1/2 INCH NI PLATED	A/R
13		0509302	HOSE, 5/8" ID X 1" OD X 6" LG.	A/R
14		0513329	GASKET, PUMP SUCTION	1
15		0513324	ELBOW, PUMP SUCTION	1
16		0501476	WASHER	6
17		107967	NUT, 1/4-20 W/NYLON INSERT SST	6
18		0502571	CLAMP, HOSE 1-1/16" - 2"	2
19		0512101	PUMP/MOTOR COMPLETE 115/60/1	1
20		0513328	HOSE, PUMP SUCTION	1
21		0512119	HOSE, PUMP DISCHARGE	1
22		0512134	TEE, 3/4", POLY.	1
23		0508808	CLAMP, SS GEAR	2
24		0508549	HOSE, MOULDED (CUT TO FIT) 1-1/4"	1
25		0312145	BRACKET, DRAIN PUMP (UH230, UH230B, UH330B)	1
26	0512227	PUMP, DRAIN 115VAC (UH230, UH230B, UH330B)	1
27	0512322	CLAMP, HOSE 2
28		0513339	HOSE, OVERFLOW (UH230, UH230B, UH330B)	1
29		0712236	TUBE, OVERFLOW GUARD (UH230, UH230B)	1
—	0712236-1	TUBE, OVERFLOW GUARD (UH330B ONLY)	1
30	109835	SCREW #8 X 1/2" SELF-TAPPING SST 1
31	0512185	BOLT, HEX FLANGE 1/4-20 X 3/8" SST 1
32	0509526	HOSE, 1/2" X 7 FT. FEM. GARD. ADAPT. 1
33	0504952	VALVE, FILL 5.0 GPM (UH130, UH130B, UL130)	1
—	0513557	VALVE, FILL 1.0 GPM (UH330B Only)	1
34	109886	VALVE, SOLENOID, 1/2" NPT (UH230, UH230B)	1
35	0501379	SWITCH, 15A	1
36	0512792	SCREW, 10-32 X 1/4" RD. HD. PHILL. SST	2
37	0508752	SCREW, 4-40 X 5/8" RH. HD. PHILL. SST	2
38	0313432	BRACKET, DOOR SWITCH	1
39	0507323	THERMOSTAT, WASH (UL130 Only)	1

This Page Intentionally Left Blank

Item No.

Part No.

Description

Qty.

1 0502653 ELBOW, 90° 3/8" MPT X 1/2" HOSE 1

2 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8" SST 4

3 0300065 SUPPORT, VALVE 1

4 0300203 CLAMP, VALVE 1

5 0502618 HOSE BARB, 1/2" X 3/8" MPT 1

6 0512985 CLAMP, HOSE 1

7 0509526 HOSE, 1/2" X 7 FT. FEM. GARD. ADAPT. 1

8 0505320 WASHER, 1" OD GARDEN HOSE 1

9 0504952 VALVE, FILL, 3/8" NPT 1

- 0513557 VALVE, FILL 1.0 GPM (UH330B ONLY) 1

Item No.

Part No.

Description

Qty.

1 0504952 VALVE, FILL 5.0 GPM (EXCEPT UH330B) 1
- 0513557 VALVE, FILL 1.0 GPM (UH330B ONLY) 1
2 0502803 SCREEN, VALVE STRAINER 1
3 0502804 GASKET, CAP 1
4 0504958 WASHER, FLOW 5.0 GPM (EXCEPT UH330B) 1
- 0513674 WASHER, FLOW 1.0 GPM (UH330B ONLY) 1
5 0502811 KIT, REBUILD 1

6 0505229 GUIDE 1

7 0501406 SCREW, SLOT SS RH 8-32 X 1/2" 3

8 0505235 COIL, 115V 60HZ 10W 1

Item No.

Part No.

Description

Qty.

1 0512985 CLAMP, HOSE 2
2 0508782 ELBOW, 90° 1/2" MPT X 1/2" HOSE 1
3 0312146 BRACKET, 1/2" SOLENOID VALVE 1 (UH230, UH230B)
4 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8" SS 2
5 0502618 BARB, HOSE 1/2" X 3/8" MPT 1
6 0509526 HOSE, 1/2" X 7 FT. FEM. GARD. ADAPT. 1
7 0505320 WASHER, 1" OD GARDEN HOSE 1
8 109886 VALVE, SOLENOID, 1/2" NPT 120VAC 1
9 109902 KIT, REPAIR, 1/2" SOLENOID VALVE 1
10 108516 KIT, REPAIR, COIL, 120VAC 1
11 107417 HOSE, RUBBER 1/2" ID X .84" OD A/R

Item No.

Part No.

Description

Qty.

1 0502571 CLAMP, HOSE 1

2 0512120 HOSE, UPPER WASH 1

3 0512985 CLAMP, HOSE A/R

4 107417 HOSE, RUBBER 1/2" ID X .84" OD A/R

5 0512757 CONDUIT, 1/2" A/R

7 112728 FITT COMP 1/4" OD X 1/8" MPT ELL J 1

8 112883-1 TUBING, 1/8" OD X 1/16" ID (RINSE-AID) A/R

9 0502667 TUBING, 1/4" ID X 3/8" OD (DETERGENT) A/R

10 0502651 COUPLER 1/2" MPT X 1/2" HOSE 1

11 0312190 BRACKET, VACUUM BREAKER 1

12 100003 NUT, HEX SST 1/4-20 2

13 106482 WASHER, SPLIT LOCK 1/4" SST 2

14 201029-1 NUT, LOCK 1/2" NICKEL PLATED 1

15 100500 VACUUM BREAKER, 1/2" NPT, BRONZE 1

— 900836 REPAIR KIT, VACUUM BREAKER 1/2" 1

16 0508817 PLUG, 1/8" HEX COUNTERSUNK A/R

17 0513110 MANIFOLD, RINSE 1

18 112763 FITTING, INJECTOR RINSE-AID (UH230, UH230B ONLY) 1

19 0713656 KIT, DETERGENT FITTING 1

— 110750 GASKET 1

— 0513672 NUT, NP 1/4' NPS PP BLACK 1

20 107928 TUBING, 1/4" NATURAL AR

21 0509302 HOSE, 5/8" ID X 1" OD A/R

22 107239 CLAMP, EMT 2

23 106967 NUT, 1/4-20 W/NYLON INSERT SST 1

Item No.

Part No.

Description

Qty.

1 0512985 CLAMP, HOSE A/R
2 107417 HOSE, RUBBER 1/2" ID X .84" OD A/R
3 0513110 MANIFOLD, RINSE 1
4 0508817 PLUG, 1/8" HEX COUNTERSUNK 3
5 0508817 CLAMP 2
6 0513679 HOSE, 1" ID X 1-3/8" BRAIDED 1
7 0513734 HOSE, MOLDED, RINSE DISCHARGE 1
8 115231 PUMP/MOTOR, RINSE 1
9 0313610 BRACKET, RINSE PUMP 1
10 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8" SST 2

Item No.	Part No.	Description	Qty.
1	0513572	BLOWER	1
2	0513574	BEARING (COMES WITH RUBBER HSG.) 2
3	0513571	COIL, HEAT RECOVERY 1
4	0313599	DEFLECTOR, FAN AIR 1
5	0313594	MOUNT, FAN MOTOR 1
6	0513733	SEAL, V-RING 1/4" 2
7	0503580	NUT, 10-32 SST A/R
8	0513573	MOTOR, BLOWER 115VAC 1
9	0513732	SEAL, V-RING 1/2" 2
10-900836	100500	BREAKER, VACUUM 1REPAIR KIT, VACUUM BREAKER 1/2"	A/R
11	0508782	ELBOW, 1/2" X 1/2" HOSE BARB 1
12	0512985	CLAMP, HOSE	4
13	0507709	WASHER		A/R
14	0513648	ELBOW, 1/2" HOSE	2
15	107417	HOSE, RUBBER 1/2" ID X .84" OD		A/R
16	100003	NUT, HEX 1/4-20 SST		2
17	106482	WASHER, SPLIT LOCK 1/4" SST		2
18	0502651	COUPLER, 1/2" MPT X 1/2" HOSE	1
19	0312190	BRACKET, VACUUM BREAKER	1
20	201029-1	NUT, LOCK 1/2" NICKEL PLATED		1
21	0713563	HOUSING, COIL	1
22	0513582	GASKET, HOUSING	1
23	0713564	DEFLECTOR, UPPER AIR	1
24	0713566	DEFLECTOR, LOWER AIR	1
25	106481	NUT, CAP 10-32 SST		A/R

Item No.	Part No.	Description	Qty.
1	109835	SCREW, #8 X 1/2" PAN HD. PHIL. SST 4
2	0503580	NUT 10-32 SST 4
3	0507709	WASHER, FLAT #10 SST 4
4	0313587	BRACKET, PRESSURE SWITCH 2
5	H31171	SWITCH, PRESSURE 2
6	H160121	HOSE, EPDM A/R
7	0513731	ELBOW, 1/4 NPT X 1/2" HOSE (C/W NUT) 1
8		0713565	TANK, BOOSTER	1
9	0512985	HOSE, CLAMP	A/R
10		107417 HOSE, RUBBER 1/2" ID X .84" OD	A/R
11		0513650 ADAPTER, 1/2" X 1/4" HOSE	2
12		0508782 ELBOW, 1/2" NPT X 1/2" HOSE	2
13		0513310 THERMISTOR, 10 KΩ, 2-WIRE 1
14		0512185 BOLT, HEX FLANGE 1/4-20 X 3/8" SST	2
15		0508817 PLUG, 1/8"	1
16		108954	NUT, GRIP 6-32 W/NYLON INSERT	2
17		110562 THERMOSTAT, HIGH LIMIT 240°F	1
18		109985 SEAL, ELEMENT BOOSTER	1
19		0513654 BOOSTER, ELEMENT 3.5 KW	1
20		106482 WASHER, LOCK 1/4" SPLIT SST	3
21		100003 NUT, PLAIN 1/4-20 SST	6
22		111885	INSULATOR	1
23		107908 COVER, ELEMENT	1
24		112883-1	TUBING, 1/8" OD X 1/16" ID (RINSE-AID)	A/R
25		112728	FITTING	1
-		0513576	HARNESS, WIRING (UH330B NOT SHOWN)	1

Item No.

Part No.

Description

Qty.

1 107417 HOSE, RUBBER 1/2" ID X .84" OD A/R

2 0502666 HOSE, 1/8" ID X 1/4" OD PVC A/R

3 0502667 HOSE, 1/4" ID X 3/8" OD PVC A/R

4 100194 NUT, GRIP 10-32 W/NYLON INSERT 2

5 0503722 NUT, HEX 10-32 SST 4

6 0507709 WASHER, FLAT #10 SST 4

7 0508867 CHUTE, INLET 1

Item No.	Part No.	Description	Qty.
1	0501869	STRAINER	2
2	0306363	TUBE, 3/8" ID X 12" LG. STIFFENER 1
3	0505483	LABEL, RINSE-AID HOSE 1
4	0502666	HOSE, 1/8" ID X 1/4" OD PVC A/R
5	0503695	LABEL, DETERGENT HOSE A/R
6	0502667	HOSE, 1/4" ID X 3/8" OD PVC A/R
7	0501519	TIE, NYLON 4" 7
8	0706635	TUBE, ELEMENT ASSEMBLY 45CC 1
9	0707142	ROTOR	1
10	0503756	MOTOR, INJECTOR PUMP	1
11	0502644	ELBOW, 1/4" HOSE BARB	2
12	0502667	HOSE, 1/4" ID X 3/8" OD PVC A/R
13	0512369	CLAMP, HOSE	1
14	114202	TUBE, 3/16" ID X 3/8" OD X 9" LG.		1
15	114203	PUMP HD KIT, PERISTALIC 1
16	100007	SCREW, 10-32 X 3/8" TRUSS SST		3
17	0504822	SCREW, 8-32 X 1/2" PAN HD. SST	4
18	0313393	BRACKET, CHEMICAL PUMP	1
19	0510870-1	GEARMOTOR, 115/60/1		1
20	0313644	PIN, HINGE	1
21	0313431	BRACKET, HINGED PANELS	1
22	0513645	HOLDER, CABLE	4
23	0713656	KIT, DETERGENT FITTING		1
—	110750	GASKET	1
—	0513672	NUT, NP 1/4' NPS PP BLACK		1

Item No.	Part No.	Description	Qty.
1	0501869	STRAINER	2
2	0306363	TUBE, 3/8" ID X 12" LG. STIFFENER 1
3	0505483	LABEL, RINSE-AID HOSE 1
4	0502666	HOSE, 1/8" ID X 1/4" OD PVC A/R
5	0503694	LABEL, SANITIZER HOSE A/R
6	0503695	LABEL, DETERGENT HOSE A/R
7	0502667	HOSE, 1/4" ID X 3/8" OD PVC A/R
8	0501519	TIE, NYLON 4" 7
9	0706635	TUBE, ELEMENT ASSEMBLY 45CC 1
10	0707142	ROTOR		1
11	0503756	MOTOR, INJECTOR PUMP	1
12	0502644	ELBOW, 1/4" HOSE BARB	2
13	114202	TUBE, 3/16" ID X 3/8" OD X 9" LG.		1
14	114203	PUMP HD KIT, PERISTALIC 1
15	0512369	CLAMP, HOSE	1
16	0313393	BRACKET, CHEMICAL PUMP	1
17	0504822	SCREW, 8-32 X 1/2" PAN HD. SST	4
18	100007	SCREW, 10-32 X 3/8" TRUSS SST		3
19	0510870-1	GEARMOTOR, 115/60/1		1
20	0313644	PIN, HINGE	1
21	0313431	BRACKET, HINGED PANELS	1
22	0513645	HOLDER, CABLE	4

Item No.

Part No.

Description

Qty.

1 0512985 CLAMP, SS GEAR-MIN. 1/2" 4

2 107417 HOSE, RUBBER 1/2" ID X .84" OD A/R

3 0513314 TEE, RINSE 1

4 0513310 THERMISTOR 10 kΩ, 2-WIRE 2

5 110562 THERMOSTAT, HIGH LIMIT 240°F 1

6 108954 NUT, GRIP 6-32 W/NYLON INSERT SST 2

7 0512185 BOLT, HEX FLANGE, 1/4-20 X 3/8" SST 2

8 109985 SEAL, BOOSTER ELEMENT 1

9 111235-1 BOOSTER, ELEMENT 5 KW, 40°F RISE 1

- 111233 BOOSTER, ELEMENT 9 KW, 70°F RISE 1

10 106482 WASHER, LOCK 1/4" SPLIT SST 3

11 100003 NUT, PLAIN 1/4-20 SST 6

12 111885 INSULATOR 1

13 107908 COVER, ELEMENT 1

14 0713333 TANK, BOOSTER SST 1

15 0508817 PLUG, 1/8" 1

— 0513538 HARNESS, BOOSTER THERMISTOR 2

- 0513537 HARNESS, WIRING (UH130B NOT SHOWN) 1

- 0513536 HARNESS, WIRING (UH230B NOT SHOWN) 1

Item No.

Part No.

Description

Qty.

1 0313396 COVER, BOX WIRING 1
2 0501411 SCREW, 10-32 X 1/4", TRUSS HD. 2
3 0512432 CONTACTOR, 3-POLE 120VAC COIL 1
4 0509527 BLOCK, TERMINAL, 4-POLE 1 (All except UL130)
5 103310 LUG, GROUND 1
6 0313395 BOX, WIRING 1
7 107964 BUSHING, STRAIN RELIEF, SMALL A/R

8 201029-1

NUT, LOCK 1/2 INCH NI PLATED

A/R

9

0512099

O-RING

1

10

0513312 CORD AND PLUG, 115VAC(UL130 Only)

1

11

0507323

THERMOSTAT, WASH (UL130 Only)

1

12

0503647 RELIEF, STRAIN

1

13

0501450 SCREW, 6-32 X 3/16" NIBS, RH PHIL. SST

2

14

0313410 BRACKET, POWER CORD

1

15

0512185

BOLT, HEX FLANGE, 1/4-20 X 3/8" SST

1

16

0503592

LABEL, GROUND

1

Item No.

Part No.

Description

Qty.

1 0313397 BOX, CONTROL BOARD (ALL EXCEPT UH330B) 1 - 0313397-1 BOX, CONTROL BOARD (UH330B ONLY) 1

2 0712105 TIMER CKT. BD. (ALL EXCEPT UH330B) 1 - 0513575 TIMER CKT. BD. (UH330B ONLY) 1

3 0501464 SCREW, 10-24 X 3/8; TRUSS HD. SST 2

4 0512373 FUSE, 4A 250V (ALL EXCEPT UH330B) 1 - 0513698 FUSE, 6A 250V (UH330B ONLY) 1

5 0313398 COVER, BOX (ALL EXCEPT UH330B) 1 - 0313398-1 COVER, BOX (UH330B ONLY) 1

6 0501411 SCREW, 10-32 X 1/4" SST 1

7 0501373 SWITCH, BOOSTER FILL 1

8 0512973 STANDOFF 6

9 107964 BUSHING, STRAIN RELIEF 2

10 0512781 HOLDER, FUSE 1

11 0313644 PIN, HINGE 1

12 0501408 SCREW, 8-32 X 1/4" TRUSS HD. PHIL. SST 6

13 0313431 BRACKET, HINGED PANELS 1

Item No.	Part No.	Description	Qty.
1	0501478	WASHER, 17/64 id X 9/16" OD SST 4
2	107967	NUT, HEX 1/40-20 NYLON INSERT SST 4
3	H35509	HUB, UPPER SPRAY ARMS 1
4	107873	WASHER, PACKING 1
5	110215	PLUG, UPPER MANIFOLD 1
6	0502571	CLAMP, HOSE GEAR 1-1/2" SST 2
7	0512120	HOSE, UPPER WASH ARM 1
8	0512133	O-RING, 2-1/8" OD X 1-3/4" ID X 3/16" 1
9	0501481	WASHER, NYLITE	4
10	100738	BOLT, 1/4-20 X 1" SST	4
11	H420548	WASH ARM ASSEMBLY (Includes Item 12)		2
12*	0712749	BEARING ASSEMBLY		2
13	H34998	NUT, SPACER	2
14	H36211	RINSE ARM ASSEMBLY (Includes Items 13, 16, and 17)	2
15	H37149	NOZZLE, RINSE ARM	12
16	H190663	BEARING, RINSE ARM		4
17	H36275	SPINDLE, RINSE ARM	2
18	0512124	SHAFT, LOWER	1
19	0512239	O-RING		1
20	0512066	HUB, LOWER WASH ARM	1
21	0512133	O-RING, 2-1/8" OD X 1-3/4" ID X 3/16"	1
22	0513439	HOUSING, MANIFOLD FWR	1
23	0513443	PIN, RETENTION	1
24	0509439	SCREW, RETENTION PIN 10-32 X 5/16" SST	1
25	0513446	O-RING, QUAD	1
26	0513445	O-RING, PIVOT SHAFT	2
27	0513447	SHAFT, FLAPPER	1
28	0712123	MOTOR, DRAIN VALVE	1
—	0509257	PIN, MOTOR (COMES WITH MOTOR)		1
29	104883	SCREW, MOTOR 6-32 X 3/8" SST	2
30	0501497	WASHER,SPLIT LOCK #8		2
31	0512126	SPRING, TORSION	1
32	0513442	FLAPPER		1
33	100194	NUT, FLAPPER SEAL 10-32 SST	1
34	0512127	GASKET, FLAPPER	1
35	100007	SCREW, FLAPPER SEAL 10-32 X 3/8" RD.HD. SST	1
36	0513441	BODY, CARTRIDGE DRAIN VALVE	1
37	0513444	O-RING, CARTRIDGE BODY	2
—	0713667	CARTRIDGE ASSEMBLY, DRAIN VALVE COMPLETE INCLUDES ITEMS 23-37		1

* Note:
The bearing assembly, P/N 0712749 includes 2 bearings, 1 locknut, and 1 wash arm hub.
The bearings, locknut and hub are not available as separate service replacement parts.

Item No.	Part No.	Description	Qty.
1	0501478	WASHER, 17/64" ID X 9/16" OD SST 4
2	107967	NUT, HEX SST 1/4-20 NYLON INSERT 4
3	H35509-1	HUB, UPPER WASH ARM 1
4	107873	WASHER, PACKING 1
5	110215	SCREW, RETAINING 1
6	0502571	CLAMP, HOSE GEAR HOSE 1-1/2" SST 2
7	0512120	HOSE, UPPER WASH ARM 1
8	0512133	O-RING, 2-1/8" OD X 1-3/4" ID X 3/16	1
9	100738	BOLT, 1/4-20 X 1" HEX. HD. SST	4
10		0501481 WASHER, NYLTITE		4
11		H420548 WASH ARM ASSEMBLY (Includes Item 12)		2
12*		0712749 BEARING ASSEMBLY		2
13		0512129 NUT, WASH ARM		2
14		0512125 SHAFT, LOWER		1
15		0512066 HUB, LOWER WASH ARM		1
16		0512133 O-RING, 2-1/8" OD X 1-3/4" ID X 3/16		1
17		0513440 HOUSING, MANIFOLD		1
18		0513443 PIN, RETENTION		1
19		0509439 SCREW, RETENTION PIN 10-32 X 5/16" SST		1
20		0513446 O-RING, QUAD		1
21		0513445 O-RING, PIVOT SHAFT		2
22		0513447 SHAFT, FLAPPER		1
23		0712123 MOTOR, DRAIN VALVE		1
—		0509257 PIN, MOTOR (COMES WITH MOTOR)		1
24		104883 SCREW, MOTOR 6-32 X 3/8" SST		2
25		0501497 WASHER, SPLIT LOCK #8		2
26		0512126 SPRING, TORSION		1
27		0513442 FLAPPER		1
28		100194 NUT, FLAPPER SEAL		1
29		0512127 GASKET, FLAPPER		1
30		0501412 SCREW, FLAPPER SEAL 10-32 X 3/8"		1
31		0513441 BODY, CARTRIDGE DRAIN VALVE		1
32		0513444 O-RING, CARTRIDGE BODY		2
—		0713667 CARTRIDGE ASSEMBLY, COMPLETE INCLUDES ITEMS 18-32		1

* Note:
The bearing assembly, P/N 0712749 includes 2 bearings, 1 locknut, and 1 wash arm hub.
The bearings, locknut and hub are not available as separate service replacement parts.

Item No.

Part No.

Description

Qty.

1 0512221 SWITCH, ROCKER DPST 250V NEON 1

2 0512213 SWITCH, PIEZIO 2

3 0512232 LIGHT, INDICATOR, GREEN 2

4 0512226 SWITCH, ROCKER RND SPDT MOMENTARY 1

5 0501408 SCREW, TRUSS PHIL. SST 8-32 X 1/4" 2

6 0513540 LABEL, FACIA 1

7 0313418 PANEL, FACIA 1

8 0512357 STANDOFF, LED DISPLAY BOARD 2

9 0503580 NUT, 10-32 2

10 0501563 SCREW, #8 X 3/8" 4

11 0512106-1 TEMPERATURE INDICATOR BD., DIGITAL 1

- 0512362 HARNESS, DIGITAL DISPLAY WIRING (Not Shown)

- 0513537 HARNESS, COMPLETE MACHINE (Not Shown) 1

Item No.

Part No.

Description

Qty.

1 0512221 SWITCH, ROCKER DPST 250V NEON 1
2 0512213 SWITCH, PIEZIO 2
3 0512232 LIGHT, INDICATOR, GREEN 2
4 0512226 SWITCH, ROCKER RND SPDT MOMENTARY 1
5 0501408 SCREW, TRUSS PHIL. SST 8-32 X 1/4" 2
6 0513539 LABEL, FACIA 1
7 0313417 PANEL, FACIA 1
8 0512357 STANDOFF, LED DISPLAY BOARD 2
9 0503580 NUT, 10-32 2

10

0501563 SCREW, #8 X 3/8"

4

11

0512106-1

TEMPERATURE INDICATOR BD., DIGITAL

1

- 0512362 HARNESS, DIGITAL DISPLAY WIRING (Not Shown)

1

-

0513536

HARNESS, COMPLETE MACHINE (Not Shown))

1

Item No.

Part No.

Description

Qty.

1 0512221 SWITCH, ROCKER DPST 250V NEON 1
2 0512213 SWITCH, PIEZIO 2
3 0512232 LIGHT, INDICATOR, GREEN 3
4 0512226 SWITCH, ROCKER RND SPDT MOMENTARY 1
5 0501408 SCREW, TRUSS PHIL. SST 8-32 X 1/4" 2
6 0513579 LABEL, FACIA 1
7 0713583 PANEL, FACIA 1
8 0512357 STANDOFF, LED DISPLAY BOARD 2
9 0503580 NUT, 10-32 2

10

0501563 SCREW, #8 X 3/8"

4

11

0512106-1

TEMPERATURE INDICATOR BD., DIGITAL

1

- 0512362 HARNESS, DIGITAL DISPLAY WIRING (Not Shown)

1

-

0513536

HARNESS, COMPLETE MACHINE (Not Shown))

1

Item No.

Part No.

Description

Qty.

1 0512220 SWITCH, ROCKER DPST 125V NEON 1
2 0512214 SWITCH, PUSH-BUTTON, GREEN 1
3 0512232 LIGHT, INDICATOR, GREEN 2
4 0512226 SWITCH, ROCKER RND SPDT MOMENTARY 2
5 0512320 GASKET, STEAM 1
6 0512107 THERMOMETER, 2" DIAL, 7" CAPILLARY 1
7 0501408 SCREW, TRUSS PHIL. SST 8-32 X 1/4" 2
8 0513503 LABEL, FACIA 1
9 0313419 PANEL, FACIA 1

10 0512215 SWITCH, PUSH BUTTON, WHITE 1

Item No.

Part No.

Description

Qty.

1	0313406 PANEL, FRONT WITHOUT GAUGE HOLE 1
2	0313407 PANEL, FRONT WITH GAUGE HOLE 1
3	0513735 GASKET 1
4	109812 GAUGE, PRESSURE 0-60 PSI 1
5	100779 SCREW 1/4-20 X 5/8" TRUSS SS PHIL A/R
6	0513659 FITTING, 1/4" TUBE X 1/8" FNPT PP 1
7	107928 TUBING, 1/4" NATURAL A/R
8	0313403 PANEL, LH SIDE 1
9	0503718 FOOT, ADJUSTING 4
10	0313402 PANEL, RH SIDE
11	0313401 PANEL, TOP
12	0313404 PANEL, REAR
13	100007 SCREW, TRUSS SLOT SST 10-32 X 3/8" A

Item No.

Part No.

Description

Qty.

1 0313406 PANEL, FRONT 1
2 100779 SCREW 1/4-20 X 5/8" TRUSS SS PHIL A/R
3 0513735 GASKET 1
4 0313403 PANEL, LH SIDE 1
5 0503718 FOOT, ADJUSTING 4
6 0313402 PANEL, RH SIDE 1
7 0313584 PANEL, TOP 1
8 100007 SCREW, TRUSS SLOT SST 10-32 X 3/8" A/R
9 0313431 PANEL, REAR 1

Item No.

Part No.

Description

Qty.

1 0713136 DOOR ASSEMBLY 1
2 0513558 GASKET, DOOR TOP 1
3 0513727 GASKET, DOOR SIDE 2
4 0713428 HINGE, RH ASSY 1
5 0501476 WASHER, 9/32" X 5/8" OD SS 1
6 0501422 BOLT, HEX SS 1/4-20 X 1-1/2" 1
7 0513332 SPRING, DOOR 2
8 0713429 HINGE, LH ASSY 1
9 0313430 ARM, DOOR SPRING 2
10 0512320 GASKET, STEAM (UL130 ONLY) 2

Dish Racks, Line Strainer, PRV

Item No.

Part No.

Description

Qty.

1 101273 DISH RACK, FLAT-BOTTOM AR
2 101285 DISH RACK, PEG AR
3 104421 STRAINER, LINE 1/2" BRONZE 1 (UH230, UH230B)
4 108265 VALVE, PRESSURE REGULATING (PRV) 1 (UH230, UH230B)

This Page Intentionally Left Blank

Electrical Schematics and Timing Charts

Illustrations

Page

Electrical Schematic - Low Temperature Model - UL130 114

Electrical Schematic - High Temperature Models - UH130, UH130B, UH230, UH230B ..... 115

Electrical Schematic - High Temperature Heat Recovery Model - UH330B....116

Timing Charts - UH130, UH130B, UH230, UH230B, UL130 117

Timing Chart - UH330B 118

UL130

LOW TEMP UNDERCOUNTER

DIAGRAM STATE

END OF CYCLE

POWER-OFF

DOOR-OPENED

DATE	NUMBER/REV
20-MAR-14	0513372

UH230, UH230B

TIMING CHART FOR FRESH WATER RINSE
EXTENDED WASH ADDS 15 MINUTES EXTRA WASHING TIME AT 70 SECS SWITCH MAY BE PUSHED ANY TIME FROM 0.5 TO 70 SEC

		MINIMUM	MAXIMUM
1	FILL VALVE	20 SEC.	55 SEC
2	DET. PUMP	0 SEC.	12 SEC.
3	SAN. PUMP	0 SEC.	20 SEC.
4	RINSE AID PUMP	0 SEC.	10 SEC.

ARROW INDICATES THAT FUNCTION END TIME IS VARIABLE WITH THE ADJUSTMENT POTENTIOMETER

UH130, UH130B, UL130

TIMING CHART FOR FILL AND DUMP
EXTENDED WASH ADDS 15 MINUTES EXTRA WASHING TIME AT 90 SECS
SWITCH MAY BE PUSHED ANY TIME FROM 0.5 TO 90 SEC

UH330B Timing Charts

TIMING CHART FOR FRESH WATER RINSE HEAT RECOVERY

		MINIMUM	MAXIMUM
1	FILL VALVE	2 SEC.	60 SEC
2	DET. PUMP	0 SEC.	12 SEC.
4	RINSE AID PUMP	0 SEC.	5 SEC.

ARROW INDICATES THAT FUNCTION END TIME IS VARIABLE WITH THE ADJUSTMENT POTENTIOMETER

UH330B SETTING

1 3 SELECTABLE WASH TIMES 70/120/196
2 S/L CL FLASHES WHEN CYCLE IS SELECTED-TURNS SOLID WHEN CYCLE START IS PUSHED - CYCLE LIGHT STAYS ON UNTIL END OF CYCLE.
3 FILL MAY HAPPEN AS REQUIRED BY WATER LEVEL SENSOR ANY TIME WHEN MACHINE IS
1 EXTENDED WASH ADDS 15 MINUTES EXTRA WASHING TIME AT 70 SECS SWITCH MAY BE PUSHED ANY TIME FROM 0.5 TO 70 SEC (SAME FEATURE AS STANDARD 0512105 CONTROL)
2 C/L ON BEGINNING TO END OF CYCLE, E/W LIGHT ON WHEN BTN, PUSHED TO END OF CYCLE OR WHEN CANCELED BY PUSHING AGAIN. (SAME FEATURE AS STANDARD 0512105 CONTROL)
3 SAME AS (3) ABOVE.

NOT IS CYCLE. DURING CYCLE FILL MAY NOT OCCUR DURING LOCKOUT PERIOD DENOTED BY

601HR SETTING

TIMING CHART FOR HEAT RECOVERY DRAIN CYCLE
ACTIVATED 4 SEC. AFTER "POWER" SWITCH IS TURNED OFF

WASH PUMP

DRAIN PUMP

DRAIN VALVE 1

DRAIN VALVE 2

RINSE PUMP

TIME (SEC.) 0 10 20 30 40 50 60 70 80

WASH PUMP

RINSE PUMP

DRAIN VALVE 1

DRAIN VALVE 2

TIMING CHART FOR HEAT RECOVERY FILL CYCLE
1) PRIOR TO STARTING THE ABOVE SEQUENCE CHECK INPUT FROM BFPs. IF IT IS CLOSED THEN DELAY ABOVE AND TURN ON FILL VALVE UNTIL TANK IS FULL. THEN PROCEED TO ABOVE CYCLE.

RINSE PUMP