UF424X - Ice Maker Scotsman - Free user manual and instructions

USER MANUAL UF424X Scotsman

Installation and User Manual for Model UF424X and UN324X

Line drawing of a large industrial air conditioner unit with cooling fins and mounting feet (no text or symbols)

Important Safety Information. Make sure to read through fully to avoid severe injury or death.

WARNING

R290 Refrigerant is

Flammable.

Flame can cause burns or property damage

Keep away from sources of fire

Warning sign depicting a flame symbol in yellow and black on a white background

This ice machine contains FLAMMABLE refrigerant and improper use can result in fire or explosion. Do not use cigarettes, vapes, or cellphones near pipes or cables, as it can be a source of ignition or spark.

This ice machine must not be installed next to equipment with an open ignition source (ie. open flames, an operating gas appliance, or electric heater). Do not store explosive substances such as aerosol cans with a flammable propellant in this appliance.

WARNING: Do not use electrical appliances inside the food/ice storage compartments unless they are of the type recommended by the manufacturer.

WARNING: In order to reduce flammability hazards the installation of this appliance must only be carried out by a suitably qualified person.

This appliance must be installed according to the safety standard for refrigeration systems presented in ANSI/ASHRAE 15.

Do not install next to anything that continuously vibrates, avoiding excessive vibrations or pulsations.

Install in a well ventilated environment and ensure ventilation and outlets are not obstructed.

Properly secure electrical wiring and cabling for the machine to minimize wear, vibrations, corrosion, excessive pressure, sharp edges, or other adverse environmental effects that could cause damage to wiring over time.

Keep fire extinguisher nearby in case of emergencies.

WARNING: Do not damage the refrigerating circuit

Use a Scotsman recommended technician certified to repair R290 equipment.

Install ONLY Scotsman factory service parts. Use of non-OEM parts can be dangerous due to the design changes needed to safely use R290 refrigerant.

WARNING: Cancer and Reproductive Harm. Visit www.P65Warnings.ca.gov for details.

This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety.

Children should be supervised to ensure that they do not play with the appliance.

Caution: This equipment should only be used on ice bins without electrical components or bins designed to be used with flammable refrigerants.

WARNING: Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. The appliance shall be stored in a room without continuously operating ignition sources

Do not pierce or burn.

Be aware that refrigerants may not contain an odor.

All installation, service, maintenance and decommissioning to be carried out by technicians certified to handle FLAMMABLE REFRIGERANTS.

Install in a well-ventilated environment and ensure ventilation and outlets are not obstructed.

When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, for flammable refrigerants, it is important that best practice be followed, since flammability is a consideration. The following procedure shall be adhered to:

a) safely remove refrigerant following local and national regulations;
b) purge the circuit with inert gas;
c) evacuate;
d) purge with inert gas;
e) open the circuit by cutting or brazing.

The refrigerant charge shall be recovered into the correct recovery cylinders if venting is not allowed by local and national codes. For appliances containing flammable refrigerants, the system shall be purged with oxygen-free nitrogen to render the appliance safe for flammable refrigerants. This process might need to be repeated several times. Compressed air or oxygen shall not be used for purging refrigerant systems. For appliances containing flammable refrigerants, refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum. This process shall be repeated until no refrigerant is within the system. When the final oxygen-free nitrogen charge is used, the system shall be vented down to atmospheric pressure to enable work to take place. Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and that ventilation is available.

Ensure that the leak detection equipment being used is suitable for use with FLAMMABLE REFRIGERANT; i.e., non-sparking, adequately sealed or intrinsically safe.

WARNING: This appliance should be stored in a room without continuously operating open flames (for example an operating gas appliance) or other potential ignition sources (for example an operating electric heater, hot surfaces).

To the owner or user: the service manual is intended to provide you and the maintenance or service technician with the information needed to install, startup, clean, maintain and repair this product. Observe any caution or warning notices. They are important and provide notice of potential hazards. Keep this manual for future reference.

WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

If additional technical information is needed, go to Scotsman's website, www.scotsman-ice.com to download a service manual.

Note: This is a commercial product. If service is needed on a unit in a residence, warranty may be limited. Use a commercial service company. Locate one from the Scotsman website: www.Scotsman-ice.com

Table of Contents

Introduction....1

Specifications 2

Cabinet Drawing....3

Placement....4

Installation: Water and Drain ....5

Installation: Electrical 6

Initial Start up....7

Maintenance and Cleaning....8

Maintenance and Cleaning Cont'd 9

Basic Troubleshooting.... 10

Controller Diagnostics ....11

Decommissioning 12

Warranty Information

The warranty statement for this product is provided separately from this manual. Refer to it for applicable coverage. In general warranty covers defects in material or workmanship. It does not cover maintenance, corrections to installations, or situations when the machine is operated in circumstances that exceed the limitations printed above.

This is a commercial model, if installed in a residence some commercial service companies may not be able to service it on site.

Fill out the Warranty Registration by using the attached warranty and mailing it in, or scan the QR

code to be taken to the Scotsman warranty website:

This ice maker is designed to be installed indoors, in a controlled environment. Although it can operate in a wide range of air and water temperatures, it will provide the best performance if not subject to extremes.

Air Temperature Limitations

• Maximum: 100°F or 38°C
• Minimum: 50^ F or 10^ C

Water Temperature Limitations

• Maximum: 100^ F or 38^ C
• Minimum: 40^ F or 4.4^ C

Water Pressure, Potable

• Maximum: 80 PSI or 5.5 BAR
• Minimum: 20 PSI or 1.3 BAR

Water Pressure, Condenser inlet

• Maximum: 145 PSI or 10 BAR
- Minimum: 20 PSI or 1.3 BAR; can be as low as 5 PSI or 0.3 BAR if clean and supplied with 45^ F water.

Condenser GPM

• 70^ or 21^ water: 0.25 GPM or 0.95 LPM
• 50^ or 10^ water: 0.15 GPM or 0.57 LPM

Voltage

115 volt models

• Maximum 126 VAC
- Minimum 104 VAC

Water Conductivity:

Minimum:10 micro Siemens/CM

RO water may be supplied to the potable water system, but if it has less than the above conductivity, the water level sensor will not detect water and the unit will not make ice.

Deionized water is not recommended due to it's potential corrosive nature and any damage caused by DI water will not be covered by warranty.

Operating the machine outside of any of the above limitations is considered abuse and any resulting damage is not covered by warranty and could cause a complete loss of warranty coverage.

Product Information:

The UF424X produces flaked ice and the UN324X produces nugget ice. The ice is stored in an insulated bin with ice level automatically maintained by the control system.

• A back flow preventer may be required by local plumbing codes.
• Has a 5.5 ft. power cord with NEMA 5-15P plug.
• Air cooled models flows in the right front and out the left front and include a cleanable air filter.
• Legs are provided, thread size is 5/8-11.
  • Machine may be installed without legs.
• For available options and kits, see sales literature.

Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance. They meet or exceed UL60335-2-89, verified by Intertek, ETL.

Model	Electrical(Volts/Hz/Phase)	Condenser	Maximum Fuse Sizeor Breaker(Amps)
UF424AX-1A / UN324AX-1A 1	15/60/1 Air 15A
UF424WX-1A / UN324WX-1A	115/60/1 Water 15A

Placement

The location of the equipment should be selected with care. Consideration should be given to allow adequate space for air cooled models to breathe.

The ice machine is not designed for outdoor use. It must be installed indoors, in a controlled environment. The air and water temperatures must not exceed rated limits.

Scotsman assumes no liability or responsibility of any kind from products manufactured by Scotsman that have been altered in any way, including the use of any part and/or other components not specifically approved by Scotsman.

Scotsman reserves the right to make design changes and/or improvements at any time. Specifications and design are subject to change without notice.

Airflow on air cooled models:

Intake from the right grill.

Exhaust from the left grill.

Do not install where this air flow is blocked.

The power outlet should be located within the length of the supplied power cord. If legs will be used, allow space for the total cabinet height. Air cooled models in a small room will require ventilation to exhaust heat from the condenser. The condenser fan and motor will generate some noise while the machine is running. Noise sensitive areas should consider water cooled equipment or locate the machine where the noise from ice making will not objectionable.

Unpack:

1. Separate the carton from the shipping pallet
2. Inspect for any hidden shipping damage. If any is found, retain carton and notify carrier for potential claim. Shipping damage is not covered by warranty.

Caution: Tip Over hazard to prevent injury or damage to the machine please use caution when lifting the unit. It will easily tips to the rear.

1. Remove bolts holding machine to pallet.
2. Install the legs. The legs are to be screwed into the same holes the shipping bolts were removed.
3. Remove the protective plastic covering the panels. The longer it is left on the panel, the more difficult it will be to remove it.

Spacing:

No additional spacing is required at the top or sides. However, suggested minimum side clearance for the installation is 1/8" or 3.2 mm and suggested minimum top clearance is 1/4" or 6.4 mm.

The machine may be installed with 0 clearance at the back. Do not block louvers at the front of the cabinet.

Pre Installation:

Water supplied to the ice machine should be filtered. Install a filter system that filters out suspended solids. It may be necessary to add a coarse pre-filter ahead of the fine filter.

Inspect the place where the ice machine is to be installed. Check for:

• Space for the cabinet
- Water Supply
- Drain Availability
• Electrical Power Supply

DO NOT USE EXTENSION CORDS.

The building drain inlet must be lower than the drain outlets at the back of the ice machine. The water supply must have a hand shut off valve accessible when the unit is installed.

For the Plumber

1. Connect cold potable water to the 3/8" male flare behind the lower back panel. A water filter is recommended. Flush the water line prior to connecting to the ice machine.

A loop of copper tubing may be used between the ice machine and the water supply. This will allow the ice machine to be pulled out from its installed location without disconnecting water. No back flow preventer is required in the potable water line. This is provided by the reservoir seat, which is above the reservoir water level and cannot be siphoned

1. Connect a drain tube to the drain fitting. Drain tubes for a water cooled machine should be run separately. The bin drain fitting is 3/4" FPT. And it is plastic. Do not overheat.

2. Drain tube material must be rigid and meet local code.

3. Traps in the bin drain line without vents ahead of them will cause poor draining
4. The bin drain must be vented if there is a long horizontal run 5 feet or more. All drains are gravity and must have a minimum fall of 1/4" per foot of horizontal run.
5. Maintain the air gap required by local code between the end of the drain to, and the building drain receptacle.

6. Drain tubing should be insulated to prevent condensation from forming on the tubing.

7. Water cooled models have a separate 3/8" FPT fitting for condenser water inlet. DO NOT FILTER water to this connection. The condenser drain is 1/2" FPT and does not need a vent.

Technical line drawing of a mechanical or electrical enclosure with pipes, valves, and circular components (no text or symbols)

For the Electrician

This is a cord-connected unit and must be on a separate single phase power supply. Check the name plate for the correct voltage. The maximum fuse size for this circuit should be 15 A, per the nameplate use fuses or HACR circuit breaker.

This is a cord-connected unit, and must be on a separate power supply. Check the dataplate for the voltage, ampacity and maximum fuse size and per the dataplate use fuses or HACR circuit breakers.

This ice machine should be installed on a dedicated circuit with a properly sized HACR-rated breaker or fuse. No other devices or appliances should be connected to the same circuit with the ice machine. Installing a unit on a shared circuit can cause product malfunctions or damage to the unit. The proper circuit size can be found on the unit data tag listed as "MAX FUSE OR HACR TYPE CIRCUIT BREAKER". Never allow the fuse size to exceed the maximum fuse size listed on the data tag.

The use of a ground fault circuit interrupter (GFCI) or arc-fault circuit interrupter (ARCI) can lead to nuisance trips and is not recommended for use on most appliances including our equipment.

If local codes or other specifications require the use of ground fault circuit interrupters, a properly rated HACR GFCI or ARCI circuit breaker should be used. An outlet type GFCI or ARCI is not recommended for ice machines and other refrigeration equipment due to more frequent nuisance trips of the GFCI or ARCI.

Always check with your local electrical inspector about the specific code requirements in your area for GFCI or ARCI breakers and GFCI or ARCI receptacles.

Follow all local codes. This unit must be grounded. Do not use extension cords and do not disable or bypass the ground pin on electrical plug.

After utility connections

1. Level the cabinet, use the leg levelers on the end of the legs to adjust to cabinet height. Legs should have been installed when the unit was unpacked.
2. Wash the bin and hood. If desired, the interior of the bin could be sanitized.
3. Locate the scoop, wash it and have it available for use when needed.

Final check list:

	Ice machine is installed indoors with air and water temperature controlled within the limitations detailed in this manual
	Ice machine is level in its final position
	Electrical disconnect (switch or plug as required) is within sight of the installed machine
	Electrical circuit is dedicated to this ice maker
	Voltage has been confirmed within the specifications in this manual and the name plate on the ice maker
	Plumbing connections are complete and tested for leaks
	Ice maker is installed with proper clearance, allowing for service and utility connections
	Water shut off valve installed near the ice maker

Start up:

1. Remove louvered front panel.
2. Open bin door and remove the inner panel, held in place by 4 thumb screws.
3. Open the water valve. Observe that water enters the water reservoir, fills and then shuts off. Check for leaks. Repair any leaks before going further.

Switch electrical supply on. Lights on controller will flash and then the power light will remain on. The code display will show o.

1. Push and release the On/Off button. The machine will start the ice making process. The code display will show F. Air cooled models will discharge warm air out the left side of the front panel. Water cooled models will discharge warm (about 120^ F/48°C) water out of the condenser drain. In a few minutes, ice will begin to fall into the bin.

2. Push the on/off button to switch the machine off. Scoop out any ice in the bin.

3. Create a solution of sanitizer. Mix 4oz/118ml of locally approved sanitizer and 2.5gal/9.5L of (90°F/32°C to 110°F/43°C) potable water to create a 200 ppm solution.
4. Sanitize bin by wiping all surface areas with the sanitizer solution. Allow to air dry.
5. Turn the ice maker on by pressing the on button.
6. Replace inner panel, front cover and louvered panel.
7. Give the owner/user this manual, instruct him/her in the operation and maintenance requirements of the unit. Make sure they know who to call for service.
   Fill out the Customer Evaluation and Warranty Registration form, and mail it in to Scotsman or register the unit at Scotsman's website (www.scotsman-ice.com).

Once started, the ice machine will automatically make ice until the bin level sensors are blocked. This will happen once the ice pile up to the sensors. The typical ice level when the machine is off will be several inches below the door. When ice level drops from use or meltage, the ice machine will resume making ice.

Tip: To maximize ice storage scoop the ice to the sides of the bin.

Noise:

This is a commercial ice machine. It contains a powerful compressor, heavy duty gear reducer and, if air cooled, a fan motor. It will produce some noise when it is making ice. Every effort was made during its design to minimize the sound level but some is unavoidable.

There are 4 areas of maintenance

1. Ice making system
2. Photo eye ice level control system
3. Bin
4. Air cooled condenser and filters

Ice making System:

Remove Scale

1. Remove front panel.
2. Turn the machine off by pressing the on / off button.
3. Empty the ice from the storage bin
4. Remove the inner panel using the 4 thumb screws.
5. Remove the top cover from the reservoir.
6. Shut water supply off at the reservoir by turning the knob counterclockwise.
7. Locate the evaporator drain in the ice machine compartment. Unplug it and drain the evaporator.
8. Replug the drain.
9. Mix a solution of 1.5qt/1.4L of warm water (90°F/32°C to 110°F/43°C) and 4 ounces of Scotsman Clear 1 Ice Machine Scale Remover.
10. Pour the cleaning solution into the reservoir until it is full (a squirt bottle may be necessary to fill reservoir with cleaning solution).
11. Push the clean button. The machine will operate the auger motor for approximately 20 minutes. Then it will start making ice with the cleaning solution.
12. Add remaining cleaning solution to the reservoir as ice is being made for the next 20 minutes. After the full 40 minutes (steps 11 & 12) the unit turn off.
13. Drain the solution from the reservoir by removing the plug. Once drained, replace the plug.
14. Pour clean water into the bin to melt any ice produced during the cleaning cycle.
15. Mix a solution of 4oz/118ml of Scotsman Clear 1 ice machine scale remover and 16oz/473ml of potable water. Use this scale remover solution for the water reservoir cover, ice discharge chutes, the storage bin and the inner front cover.

Sanitize Water System

1. Create a solution of sanitizer. Mix 4oz/118ml of locally approved sanitizer and 2.5gal/9.5L of (90°F/32°C to 110°F/43°C) potable water to create a 200 ppm solution.
2. Pour the sanitizing solution into the reservoir until it is full and wait 2 minutes.
3. Turn on the water supply and press the ON /Off button to turn the ice machine on
4. Operate the machine for at least 15 minutes.
5. Drain the solution from the system by pulling the reservoir plug from the drain hose. Return plug when drained.

Photo Eye ice level control

1. Mix solution of 4 ounces of Clear 1 Ice Machine Scale Remover and 1.5qt/1.4L of 90°F/32°C to 110°F/43°C water.
2. Remove sensors from inner cover by removing the white c-clip.
3. Use cotton swab and cleaning solution to thoroughly clean photo sensors.
4. Rinse sensors with clean water.
5. Reinstall sensors in inner panel.

CAUTION

Ice machine cleaner contains acids. Acids can cause burns.

If concentrated cleaner comes in contact with skin, flush with water. If swallowed, do NOT induce vomiting. Give large amounts of water or milk. Call physician immediately. Keep out of the reach of children.

Bin

1. Use the same cleaning mixture to thoroughly clean bin surfaces.
2. Rinse with clean water.
3. Use sanitizer mix on all bin surface areas and areas that may contact the ice.
4. Rinse with clean water.

Filters and Air Cooled Condenser

The air filter located on the lower front grill will capture airborne dust during operation. As the dirt builds up, it begins to restrict air flow and causes the refrigeration system to work less efficiently. Clean the air filter regularly.

1. Remove the filter by sliding it to the right until it is clear of the ice machine.
2. Remove dust and dirt by washing the filter in a utility sink.
3. Reinstall filter in the ice machine.

Condenser

The condenser fins require semi annual cleaning. Use caution to prevent damage to the condenser fins.

1. Lightly brush dust from the condenser.
2. Use a vacuum to thoroughly clean the condenser.

Troubleshooting

Symptom Possible Cause	Probable Correction
No ice in bin Unit in off mode or off on error code.		Remove front panel and check controller code display. Push ON/OFF button to reset
		No Power to unit Check for the power light on the controller. If not illuminated restore power.
		Auger motor not operating Open windings. Check motor windings and replace if open.
		Compressor not operating Co contactor coil is open, check and replace if needed.
		Compressor operating, auger turning, no ice is made	Check refrigeration system, TXV may be set to too much superheat or the system is low on refrigerant.
Excessive noise Tubing contact Check for tubes rattling and panels not tight
Moaning noise when making ice	Water seal being compressed	Gear reducer bearing failure, replace gear reducer
Slow or Low production Condenser is dirty Check and clean condenser
Code or Light Action Probable Cause Suggested Action
0	Unit manually switched off If desired, switch unit on.
F	Freeze mode None, unit is making ice.
b	Bin sensors sense bin full Check if bin is full.
E	Corrupted memory Replace controller
C	Clean mode Continue clean mode
d	Test mode None, allow unit to finish test mode.
1	Auger motor rotated auger backwards.	Replace auger motor. Check water seal area for leaks, replace seal if leaking.
2	Auger motor stalled or operating slowly	Clean ice making system and retry. If unit shuts off again right after a reset, magnet rotor on motor shaft may be loose.
3	No water in reservoir Restore water.	If there is water, is it too pure? Are sensor wires connected?
4	High pressure cut out open Check fan	an motor on air cooled or water supply on water cooled.
Status light is on Unit is in ice making mode Normal, may not be making ice if bin is full
Time to Clean light is on Unit has not been cleaned for at least 6 months		Clean unit
Auger light is on	Auger motor is active	Normal when making ice
Compressor light is on	Compressor is active	Normal when making ice

Only qualified technicians familiar with R290 refrigerant should decommission a machine, as special tools and containers are required for the removal, transportation, and disposal of this highly flammable substance.

Work shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being present while the work is being performed.

• Before attempting the procedure:

• All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. Work in confined spaces shall be avoided.
• The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e., nonsparking, adequately sealed, or intrinsically safe.
• If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate fire extinguishing equipment shall be available on hand. A dry chemical or CO2 fire extinguisher should be adjacent to the charging area.

• No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment shall be surveyed to make sure that there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed.

• Ensure that all protective gear is present and used throughout the procedure.

• Make sure recovery equipment and containers are available and ready for use. All containers used for recovery must be rated for R290 refrigerant and must be labeled as such.

• Weigh any refrigerant prior to reclaiming.

• Maintain safety through standard operating procedures as outlined on page 20 of this document. Be sure to follow local, state, and federal guidelines for proper disposal.

• Do not fill containers more than 80% and do not exceed the pressure limits of the container. Make sure the machine to be decommissioned is in satisfactory working order and that the electrical components of the machine are properly sealed to prevent ignition.
• Recovered refrigerant should not be charged into another refrigerating system or mixed in another container.
• Make sure to safely transport the refrigerant in line with standard operating procedures.
• All recovered refrigerant must be returned to refrigerant supplier for proper disposal.
• If compressor or compressor oils are removed ensure it has been removed to an acceptable level so the flammable refrigerant does not remain in the lubricant.

• In addition to conventional charging procedures, the following requirements shall be followed:

• Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them.

• Cylinders shall be kept in an appropriate position according to the Instructions.

• Ensure that the REFRIGERATING SYSTEM is earthed prior to charging the system with refrigerant.

• Label the system when charging is complete (if not already).
• Extreme care shall be taken not to overfill the REFRIGERATING SYSTEM.

- Prior to recharging the system, it shall be pressure-tested with the appropriate purging gas. The system shall be leak-tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site

- Before carrying out this decommissioning procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant. It is essential that electrical power is available before the task is commenced.

• Become familiar with the equipment and its operation.
  • Isolate the system electrically.

• Before attempting the procedure, ensure that:

• mechanical handling equipment is available, if required, for handling refrigerant cylinders;

• all personal protective equipment is available and being used correctly;
• the recovery process is supervised at all times by a competent person;
• recovery equipment and cylinders conform to the appropriate standards.

- Pump down refrigerant system, if possible.

• If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
• Make sure that cylinder is situated on the scales before recovery takes place.
• Start the recovery machine and operate in accordance with instructions.
• Do not overfill cylinders (no more than 80 % volume liquid charge).
• Do not exceed the maximum working pressure of the cylinder, even temporarily.
• When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.
• Recovered refrigerant shall not be charged into another REFRIGERATING SYSTEM unless it has been cleaned and checked.

- Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed. For appliances containing FLAMMABLE REFRIGERANTS, ensure that there are labels on the equipment stating the equipment contains FLAMMABLE REFRIGERANT.

- When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely. When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e., special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs. The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, FLAMMABLE REFRIGERANTS. In addition, a set of calibrated weighing scales shall be available and in good working order.

- Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt. The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders. If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that FLAMMABLE REFRIGERANT does not remain within the lubricant. The evacuation process shall be carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor body shall be employed to accelerate this process. When oil is drained from a system, it shall be carried out safely.

Scotsman®

Ice Systems

Line drawing of a modern industrial air conditioner unit with cooling fins and mounting feet (no text or symbols)

WARNING

Warning sign depicting a flame symbol in yellow and black on a yellow triangle

Technical line drawing of a mechanical or electrical enclosure with pipes, valves, and circular components (no text or symbols)

101 Corporate Woods Parkway

Vernon Hills, IL 60061

800-726-8762