SmartRack SRCOOL60KCW - Air Conditioning Tripp Lite - Free user manual and instructions

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USER MANUAL SmartRack SRCOOL60KCW Tripp Lite

Owner’s Manual SRCOOL60KCW In-Row Precision Chilled Water Cooler PROTECT YOUR INVESTMENT! Register your product for quicker service and ultimate peace of mind. You could also win an ISOBAR6ULTRA surge protector—a $100 value! www.tripplite.com/warranty 1111 W. 35th Street, Chicago, IL 60609 USA • www.tripplite.com/supportCopyright © 2016 Tripp Lite. All rights reserved. Español...........................60 Français ........................119

9. Maintenance and Cleaning .................52

Appendix 4: Warranty and ......................59

Carefully read the manual before any installation, operation, and maintenance. To avoid personal injury and equipment damage, be sure to operate the product in accordance with the instructions in this manual and the markings on the product.

When handling the equipment, take into account the unit's height and center of gravity. Only lift the unit from the bottom.

1.2 Connection Warnings

The unit can be connected with a single or dual power source. Make sure the input power is disconnected before making a connection. If necessary, use a multi-meter to confirm this.

Do not install the equipment on a flammable or unstable floor.

This unit is only intended for indoor use. The indoor environment must be separate from the outside air to avoid temperature and humidity interference. Consult your national or local regulations for separating the installation environment.

All cabling connected to this equipment must meet applicable NEC and network communications cabling standards. As appropriate, all wiring and equipment should be installed in accordance with NFPA 70 National Electrical Code and the applicable sections of ANSI C2 National Electrical Safety Code.

The equipment is designed for altitudes up to and including 2000 m (6560 ft.) above sea level.

The equipment is intended to be installed by a service person and in a Restricted Access Location only.

The unit’s grounding wires must be effectively connected with the grounding system.

High voltage may be fatal! The internal components may have hidden dangers, and only qualified service personnel should service the unit. Improper operation may lead to serious injury, death, or equipment damage. Be sure to follow all instructions and warnings contained in this manual.

When replacing the side panels, front door, or rear doors, make sure there is no foreign matter in the cabinet.

Use of this equipment in life support applications where failure of this equipment can reasonably be expected to cause the failure of the life support equipment or to significantly affect its safety or effectiveness is not recommended.

The unit contains moving components. Keep arms, legs, hair, clothes or jewelry away from unit during operation.

SAVE THESE INSTRUCTIONS

This manual contains instructions and warnings that should be followed during the installation, operation, and storage of this product. Failure to heed these instructions and warnings may affect the product warranty.4

The Tripp Lite SRCOOL60KCW In-Row Precision Chilled Water Cooler uses a modular, parallel cabinet design that facilitates expansion or movement and can be flexibly integrated into your data center environment. With a high cooling efficiency and the ability to be set in an area adjacent to a heat load, the SRCOOL60KCW decreases ambient temperature in order to lower overall energy costs and prolong equipment lifespan. As your data center grows, your increased cooling needs can be met by easy re-configuration of the equipment. When installed in a data center, untreated air will be drawn in from the rear of the cooling unit and treated and cool air will be released from the front of the unit. The cooling unit is managed by a user-friendly interface. Cooling efficiency can be actively controlled with the built-in microcontroller unit that reports abnormalities via the alarm system.

2.2 Functions and Features

Intelligent temperature control Built-in microcontroller unit accurately detects and manages the data center’s temperature, automatically adjusts the unit’s output, and supports two automatic control modes, intelligent control mode (default) and PID control mode.

User-friendly control interface Provides easy setting, monitoring, and access to system configuration and status.

Three-way ball valve automatic spring-resetting During an abnormal power interruption, the inner flow-rate actuator will automatically close the three-way ball valve within 15 seconds to stop chilled water from continuously flowing into the coil and generating condensation, which may lead to water leakage.

Upper piping configuration option Supports lower (default configuration) and upper (with SRCOOL60KTP kit, sold separately) piping for a flexible configuration.

Alarm system Detects abnormalities and reports via a buzzer, an external dry contact device, or over the TCP/IP connection.

Heat load temperature detection Accurately monitors the heat load temperature via remote temperature sensors.

Water leakage detection Optional water leakage detector (configurable up to 50 m / 164 ft.) immediately informs the user of any water leakage.

Output and input dry contacts Includes two output and two input dry contacts for fire alarm, smoke alarm, system alarm, etc.

Insulated side panels Isolates the unit from outside temperature variations.

Multi-speed and hot-swappable fans The unit is equipped with high efficiency and energy saving fans whose rotation speed is adjustable between 30~100%. Fans are hot- swappable for uninterrupted unit operation.

Lockable front / rear doors and side panels Prevents unauthorized access.

Condensed water pump The condensed water pump automatically drains condensed water while the water level sensor at the bottom of the cabinet detects the condensed water pan's respective water level to avoid leakage.

Casters Offer convenient movement or relocation.

Network interface Provides remote monitoring and management through SNMP protocol.5

No. Description Quantity

Tripp Lite SRCOOL60KCW In-Row Precision Chilled Water Cooler 1

Key (for use with front / rear doors and side panels) 2

Communication Wiring Duct Cover Plate 2

Power Supply Cover Plate 16

External (Figure 2-1 : Appearance and dimensions)

Rear/ hot aisle Front/cold aisle No. Description

Removable, insulated side panel No. Description

Levelers No. Description

Internal (Figure 2-4 : Internal components) No. Description

Outlet water pipe manual exhaust valve

Three-way ball valve and actuator

Bypass valve No. Description

Inlet shut-off valve

Coils No. Description

Power supply unit (each on front- and rear-side of unit)

Level switch (located in water pan) *Always use compatible washable aluminum filters (MERV1, ASHRAE 52.2). ** Each of the

connectors is a 25 mm (1 in.) PT female connector.

No. Item Description

MAIN ON The green LED indicates power-on. When flashing, indicates the unit is in installation mode.

STANDBY The yellow LED indicates the unit is running in standby mode. When flashing, indicates the unit is running in force mode.

WARNING The yellow LED indicates alarm information.

FAULT The red LED indicates fault information.

/ Goes back to previous screen or moves up to next screen / Moves up or down / Increases or decrease number.

ESC Goes back to previous screen or cancels current operation.

Enters your selected item or confirms your selection or setting.

(Figure 2-5 : Pipe circuit diagram) No. Description

Three-way ball valve and actuator

Inlet water temperature sensor No. Description

Outlet water temperature sensor

Inlet connector No. Description

Condensed water drain pipe

Condensed water pump

Network Port: Connects to the Ethernet Network.

LED Indicators: When the interface is initializing, the two LED indicators simultaneously flash to show its status.

• Rapid simultaneous flashing (every 50ms): Initialization in progress.

• Slow simultaneous flashing (every 500ms): Initialization failed.

WARNING: Do NOT disconnect the cooling unit’s input power during initialization. This could result in data loss or

damage to the network interface. The green (left) LED indicator shows the network connection status:

• ON: Network connection established and the IPv4 address is useable.

• OFF: Not connected to a network.

• Flashes slowly (every 500ms): Faulty IP address. The yellow (right) LED indicator shows the linking status between the interface and the system:

• Flashes rapidly (every 50ms): Communication established.

• Flashes slowly (every 500ms): No communication.

• Connects to a workstation with the provided RJ45 to DB9 cable for system configuration.

Reset Button: Resets the interface. This does not affect the operation of the cooling unit.

DIP Switches: Set up operation modes. DIP Switches Operation Mode Description Normal Mode Provides the cooling unit’s status information and parameters over the network. Pass Through Mode Stops polling the cooling unit but transfers the communication data between the console port and the cooling unit. Sensor Mode (with TLNETEM) Collects data from an optional TLNETEM. It provides not only the cooling unit’s status and parameters, but also the TLNETEM’s status information and environmental parameters. Configuration Mode In this mode, the user can login through the console port and configure the interface’s settings.

When planning the cooling unit's installation site, consider the following for the best efficiency.

Environmental requirements: The installation site must allow the equipment to move in and out, the flooring must bear the weight of the equipment and there must be sufficient space for maintenance, operation, and pipe repair. The cooling unit can only be located indoors. The indoor environment must be isolated from the outside air to avoid temperature and humidity interference. Outside humidity entry must be minimized in accordance with local or national regulations to avoid the increase of operating costs due to loss of cooling capacity.

Humidity and heat source: Implement waterproofing and heat insulation engineering for the indoor environment to isolate the unit from outside hot, humid air. Note: The unit cannot humidify or automatically de-humidify. If the humidity of the installation environment exceeds the operational scope (refer to 4.4 Operating Temperature and Humidity), the condensation of the water in the coil may lead to a rise in the water level of the condensed water pan, triggering an alarm.

Noise impact: During maximum output, the operation of this cooling unit may produce fan noise in excess of 60 dB. Therefore, it is not suitable to install the unit close to offices.

Input power: In connecting the power supply, ensure the power conforms to the rated value and the power distribution device is sufficient to satisfy the load requirement. Inspect the rated values of each unit and ensure they have been properly grounded. Only use one branch circuit per cooling unit.

1. Only service personnel should perform the following installation procedures. To avoid equpment damage and

personal injury, do not perform unauthorized installation, piping or handling.

2. The equipment's high voltage is potentially fatal! Only qualified service personnel should access inner

In order to facilitate maintenance, operation, and air circulation, please reserve a net space around the equipment. Allow 1200 mm (47 in.) space for the front, 600 mm (27 in.) space for the rear, and at least 300 mm (12 in.) above the cabinet for pipe installation. If the pipeline adopts a lower connection mode, the height of the raised floor should not be lower than 300 mm (12 in.). If the pipeline adopts an upper connection mode, the equipment can be set on a common floor.11

Handling Instructions Before moving the equipment to the installation site, plan the route according to the following:

Make sure the passage, floor, elevator or slope on the handling route can bear the weight of the equipment and handling device, with sufficient net space to avoid collisions.

In the case of a slope on the handling route, its inclination must not be greater than 15 degrees.

The bottom casters are only suitable for short distance movement. For long distance movement, use a handling device (such as a forklift in Figure 3-2) to avoid damage to the casters.

The casters are only suitable for flat surface movement. Avoid moving the unit on uneven ground, which may damage the casters or possibly result in toppling the unit.

When moving the unit, pay attention to its height and center of gravity. For optimal safety when moving, at least two people should handle the unit. Levelers After the unit is in place, stabilize by rotating the four levelers clockwise with a wrench. Make sure the unit does not slide or wobble.

The levelers are used only for leveling the unit and cannot be used to compensate for a height difference of the floor.

After moving the unit into place and parallel with the adjacent cabinet, you must ensure the unit's stability. The following two methods can be used, depending on the installation environment: Cabinet fasteners Each cooling unit is provided with four connecting fasteners (two at the front and two at the rear). Remove the front and back doors before making the fastener connection. Refer to the following procedures:

If the front door is locked, use the key to open it.

Remove the control panel’s flat cable and ground wire

and remove it. (Figure 3-2 : Forklift handling) (Figure 3-3: Leveling feet) (Figure 3-4 : Open the front door)12

Use a screwdriver to remove the two screws and ground wire from the rear door

, lean the rear door towards you and lift it up

to remove. (Figure 3-5: Remove the rear door)

Note: Place the front and rear doors that have been removed in a safe place to avoid any equipment damage or personal injury.

Use a screwdriver to loosen the screw below the fastener and lock it on the adjacent cabinet. (Figure 3-6: Join the cooling unit and the adjacent cabinet together) (Cooling unit) (Adjacent cabinet)

Secure the front and rear fasteners (8 total) to the adjacent cabinet.

After securing the fasteners, reinstall the front and rear doors.13

Hold-down bracket The hold-down bracket support is used to fix the cooling unit to the pallet during transportation. The bracket can also be used to secure the unit to the ground after positioning.

Use two M6 screws to secure the hold down bracket to the frame below the front door (with the extruding part forward)

Use expansion screws to secure the extruding end to the floor.

(Figure 3-7 : Installation of L-type balance support)

Expansion screws Floor L-type balance support

3.5 Side Panel Removal

If side panel is locked, use the attached key to open it. Two latches are located on each of the two side panels. Press the latches downward at the same time and remove the side panel. (Figure 3-8 : Removal of side panel) To reinstall a side panel, align the two lower holes and press down the latches at the same time.14

Drill holes in the raised floor or ceiling according to the piping mode: lower (default) or upper (with SRCOOL60KTP kit, sold separately). The pipeline is wrapped with an external heat insulation layer to reduce the interference of outside temperature and avoid condensed water. The hole diameter should be approximately 13 mm (0.5 in.). Dimensions: [mm] INCHES (Figure 3-9: Lower piping positions and dimensions) [181] 7[223] 8.8 3-9-ok.pdf 1 12/22/2015 1:29:39 PM (Figure 3-10 : Hole diameters and positions for lower piping) [215] [315] [Ø65] Ø2 9/16 [Ø65] Ø2 9/16 [95]

(Top view) (Bottom view) [Ø65] Ø2 9/16 Note: To install chilled water supplies from the top of the unit, Tripp Lite offers the SRCOOL60KTP Pipe Installation Kit (sold separately).15

(Figure 3-11 : Suggested external piping)

InletOutletBypassSRCOOL60KCW No. Description

Automatic exhaust valve

Pressure meter No. Description

Balance valve Configure an external pipeline and an automatic exhaust valve

at the water inlet end (as shown in Figure 2-5) for removing the air in the pipeline. Set a Y-type filter

in the water inlet pipe to filter out impurities and chemical substances in the water. Install a ball valve

in front of or behind the Y-type filter to set up a branch circuit. When the filter needs cleaning or maintenance, close the ball valve to let the chilled water go to the cooling unit via the branch to avoid shut-off loss. Install a pressure meter

in front of and after the Y-type filter and determine if there is a blockage according to the pressure difference. Configure a multi-function balance valve

at the return water end for adjusting the return water flow rate. Pipeline flushing To guarantee cooling efficiency, you must flush the pipeline to filter out impurities and chemical substances. For pipeline flushing, use a hose to create a short circuit so the chilled water goes directly from the inlet end to the return end without passing through the cooling unit. Use a fine-meshed filter (20-mesh suggested) in the Y-type filter to filter out the fine impurities. After 12 to 24 hours of water circulation in the pipeline, change to a larger-meshed filter (3-mesh suggested). When using a glycol additive, refer to Appendix 3: Glycol Correction Table for information about cooling capacity and water-side pressure drop.16

3.8 Power Connection

Notes:1. The input power must conform to the rated value on the equipment nameplate. 2. Input Power Connection by Flexible Cord with Cable Gland: Use a UL-listed flexible cord such as Type-SJT for North America or European equivalent,

/3C (12 AWG/3C), 300V min., 90°C (194°F) min. with the included cable gland for connection. 3. The cooling unit’s maximum power consumption is 2400W. Install an appropriate UL-listed breaker (above 300V AC, 20A and 2P is recommended) or European equivalent in front of the input side of the unit to protect other equipment in the circuit if an overload or short occurs. 4. In locking the screws for wiring at the power terminal block, use the recommended installation torque of 12.2 kgf·cm (10.6 lbf·in.) 5. If there is no wire passing through the communication wire duct at the top of the cabinet, cover the duct with the cover plate provided in the accessory package to avoid dust accumulation. 6. The length of the conductor between the cord anchorage and the terminals shall be such that the current-carrying conductors become taut before the earthing conductor if the cord slips out of the cord anchorage.

and remove the power supply‘s cover plate

at the rear of the cabinet top. (Figure 3-12: Removal of the power supply’s cover plate)

Remove the cover plate’s knock-out

use the nut to fix the cable gland on the cover plate, and pass the power wires through the cable gland

and remove the power supply’s cover plate

at the rear of the cabinet top.

Use a screwdriver to loosen the screws of the wiring terminal block and use ring-type terminals to secure terminal 1, terminal 2 and terminal 5 wires. (Figure 3-14 : Installation of power wires)1 2 3 4 51 2 3 4 5 Wiring terminal block L1 (line) N1 (neutral) G (ground) Wiring terminal block L1 (line) L2 (line) G (ground) 230V Installation 208V Installation

Re-install the power supply's cover plate and tighten the cable gland. (Figure 3-15 : Re-install the power supply’s cover plate)

, use the nuts to fix the cable glands on the cover plate, and pass the power wires through the cable glands

Use a screwdriver to loosen the wiring terminal block screws and use ring-type terminals to secure the wires into the terminal block.

The SRCOOL60KCW is factory pre-wired for single input installation. Use a screwdriver to remove the two jumpers connecting number 1 and number 3 terminals, and number 2 and number 4 terminals (see Figure 3-18 below). (Figure 3-19 : Installation of power wires)Wiring terminal block 230V Installation L1 (line)N1 (neutral) L2 (line)N2 (neutral)G (ground)G (ground)1 2 3 4 5Wiring terminal block 208V Installation L1 (line)L2 (line) L1 (line)L2 (line) G (ground)1 2 3 4 5(Figure 3-18: Removing pre-installed jumpers)1 2 3 4 5 Wiring terminal block

Re-install the power supply's cover plate and tighten the cable glands. (Figure 3-20 : Re-install the power supply’s cover plate)

3.8.2 Condensed Water Pipe

The condensed water pipe has been connected in the lower part of the cabinet. You must pass the other end through the reserved hole at the bottom to drain the condensed water. The unit’s condensed water pump supports lower (default) and upper piping configuration (with optional SRCOOL60KTP kit, sold separately). If the upper piping is selected, the height of the condensed water pipe should not be higher than 5 m (16 ft.). (Figure 3-21 : Installation of the condensed water pipe) Condensed water pipe

No. Item Description

Network Interface This unit contains a preinstalled network interface that can be connected to a network to manage the system based on the SNMP protocol. To use, connect an RJ45 cable (sold separately) from the interface to the workstation. See 6. Network Configuration for operation and settings.

RS-232 and RS-485 Ports The RS-232 or RS-485 port connects a workstation based on Modbus protocol for remote use.

CAN-Link IN/OUT Reserved for series connection of several cooling units, it adopts one-Input one-Output mode.

Input Dry Contacts Used for connecting the fire alarm or smoke detector. When an event occurs, the dry contact device is triggered to form a short circuit. The system will record it in the event log, start the buzzer and light the FAULT indicator. Port

Output Dry Contacts Connect two dry contact output devices and trigger the contacts at specific events. Port

(System alarm event): Normally open. Connect the dry contact device to this port and the device will be triggered when an alarm event occurs (close the circuit). You may set the triggering conditions. Refer to 5.7.2 Local setting. Port

(Cooling unit startup) Normally open. Automatically trigger to form a short circuit at the start of the cooling unit to remind the chiller to output chilled water and turn to the normally open status until the cooling unit is powered off.

Remote Temperature Sensor Ports At most, three remote temperature sensors (two are provided) can be connected. It is suggested that qualified service personnel connect and locate the remote sensors during installation to ensure accurate detection of heat load temperature. Note: Do not relocate the remote temperature sensors unless authorized.

Remote Temperature and Humidity Sensor Port Connects the SRCOOL60KRTH (remote temperature-humidity sensor, sold separately) or SRCOOL60KRT (remote temperature sensor, sold separately) for accurate detection of the temperature and humidity of heat loads. It is suggested that qualified service personnel perform installation.20

1. Only qualified service personnel should carry out the installation procedures in this section.

2. The high voltage of this unit is potentially fatal! Make sure the input power has been disconnected before

performing the following actions.

3. A startup without correctly completing this section may lead to serious personal injury or equipment damage!

Complete all the following inspections before the initial startup procedures. Inspection List

General items ___ The unit has no external damage. ___ The unit is stable. ___ All the installation procedures have been performed in accordance with the instructions in 3. Installation. ___ The pipes inside and outside the cabinet have been correctly connected and the thermal insulating layer of the pipes are free of damage and leakage. ___ The front and back doors have been reinstalled and the control panel’s flat cable has been connected.

Environment ___ The operating environment is an enclosed space and isolated from interference from outside temperature and humidity. ___ The reserved space around the cabinet conforms to the minimum space requirements (see 3.2 Placement).

Electrical connection ___ The rated value of the input power conforms to that marked on the nameplate. ___ The equipment has been properly grounded. ___ All electrical connections are tight and secure. ___ The remote temperature (humidity) sensors have been correctly connected and located properly. ___ The water leakage detector has been correctly laid out.

Mechanical connection ___ The pipes and valves are free of leaks or visible damage. ___ The condensed water drain pipe has been correctly connected and led to the drain. ___ The temperature of the water supplied by the external chiller is stable (5~15°C / 41~59°F).

Power on the cooling unit and it will automatically enter standby mode. As a safety precaution, the fans will not automatically rotate. Only when the unit enters manual mode, automatic mode, force mode or installation mode and returns to the standby mode, will the fans run at the minimum speed. After the Tripp Lite logo displays for six seconds, the LCD will show the following status screen: Supply Air Flow 50%RH

(Figure 4-1 : LCD status screen) For a description and operation of each screen, refer to 5.2 Control Panel Operation.

4.3 Coolant Line Purge

You must carry out the following air purge procedures to purge the air in the pipe:

Open the shutoff valve and the bypass valve. (Figure 4-2 : Completely open the shutoff valve and the bypass valve) Closed Open

Rotate the outlet water pipe’s manual exhaust valve counterclockwise. (Rear)Outlet water pipe’smanual exhaust valve(Open) (Figure 4-3: Open the outlet water pipe’s manual exhaust valve—illustration shown with top cover removed)

Open the water inlet’s user-supplied valve to let the water slowly flow into the pipe. After the water flows into the pipe, the air will be squeezed out.

After 6~7 seconds, when the air is exhausted and the water begins to discharge from the pipe, close the valve in the reverse method in which it was opened. Note: Do not perform the air exhaust procedures after making any changes in the pipeline structure. It is recommended to install an automatic exhaust valve for external piping. Refer to 3.7 External Piping.22

4.4 Operating Temperature and Humidity

Use an auxiliary dehumidifier or air conditioner to adjust the indoor temperature and humidity until they fall within the acceptable operating range.

If the indoor humidity is too high, the condensing effect around the coil may lead to too much condensed water, which could cause leakage or trigger an alarm. (Figure 4-4: Standard Operation Conditions) Standard operation environment conditions Dry ball temperature (˚C) Relative humidity (%)

Non-Operable Operable If there is no auxiliary dehumidifier or air conditioner indoors, you may start the installation mode to reduce the humidity in the cabinet. Use the following procedure:

In the status screen, press to enter into Main Menu, use and to select Factory Setting, then press .

Enter administrator password (see 5.4 Account Authority and Login).

After entering the password, select the installation mode and press to confirm. The fans will now run at the minimum speed, the three-way ball valve will fully open and the bypass will close. Press ESC repeatedly to return to the status screen and monitor changes in temperature and humidity.

When the humidity falls within the acceptable operating range, the WARNING indicator will flash and the buzzer will issue sustained short beeps for 0.5 second. The alarm will continue until you leave the installation mode.23

This cooling unit contains a connection for the SRCOOL60KDR water leakage detector (sold separately) at the bottom of the cabinet. When installed, the water leakage detector will be triggered to issue an alarm when in contact with water or liquid, alerting you to take proper measures. You must manually set the detector for leakage detection on-site and in a low-lying place. If the lower piping configuration is adopted, it is suggested to set it close to the pipeline below the raised floor. Pass one end of the water leakage detector through the small hole at the lower part of the cabinet and set the detector at the above- mentioned place. (Figure 4-5 : Water leakage detector installation)

(Figure 4-6: Water balance)

Water inlet end Return water end Balance valve of return water end Branch balance valve

The program adopts a compensation method and adjusts the flow rate with the first (most remote) cooling unit as a reference point. The process involves at least three assistants. Maintaining communication via handheld communication devices is suggested. The number of cooling units in a circuit varies. For the following steps, a six-unit configuration is used as an example.

Set a balance valve at the return water end of the main pipe to adjust the total flow rate of the circuit.

Use the control panel to set all cooling units in installation mode (see 4.4 Operating Temperature and Humidity). The three-way ball valves will automatically open completely (100%).

Fully open the balance valve of the return water end and the branch balance valves at all branches. Record the flow rate of each unit.

Adjust the balance valve of the return water end to 110% of the rated total flow rate. If the balance valve cannot reach this value when fully opened, keep it at full opening and adjust the flow rate of each branch proportionally.

Fully open the branch balance valve of Unit 1. Then adjust the balance valve of the return water end of the main pipe circuit to enable Unit 1 to reach its rated flow rate (±5%). Make sure once again its branch balance valve is kept fully open.24

Adjust the branch balance valve of Unit 2 for it to reach the rated flow rate. Another person will observe the flow rate change of Unit 1, dynamically adjust the balance valve of the return water end and compensate water to enable Unit 1 to reach the rated flow rate (±5%). After adjustment, record the opening of the branch balance valve of Unit 2.

Adjust the branch balance valve of Unit 3 for it to reach the rated flow rate. Another person will observe the flow rate change of Unit 1, dynamically adjust the branch balance valve of Unit 1 and compensate water to enable Unit 1 to reach the rated flow rate (±5%). After adjustment, record the opening of the branch balance valve of Unit 3.

to adjust Units 4~6 and record the opening of the branch balance valves.

When all units are adjusted, record the opening of the balance valve of the return water end and the total flow rate (rated flow rate ±10%).

If the circuit is unable to reach the rated value of the total flow rate after adjustment, adjust the water flow of the chiller and water pump.

Due to differing data center environmental conditions, the PID parameter values must be adjusted by qualified service personnel after installation to achieve the best cooling efficiency. Note: First read 5.2 Control Panel Operation to get familiar with basic operation. Path: Main Menu g Setting g Controller

Force Mode P Gain I Gain D Gain OFF

Proportional constant (P) Adjust between the measured temperature and the set value.

Integration constant (I) Add or subtract the integration coefficient by small incremental output.

Differential constant (D) Adjust the output to correct the time-dependent correction rate. The PID default values of the three-way ball valve are: P I D

Adjustment procedures The adjustment is made based on an open circuit method as follows:

Keep the fans running at high speed (at least 70%) and observe the flow rates at the high, medium, and low openings of the three-way ball valve from the control panel.

Adjust the three-way ball valve to the opening at half of the rated flow rate, which varies according to the pipeline configuration and pressure distribution at site. If the opening is too large (above 70%), reduce it to a medium opening (about 50%).

When the temperature and humidity of outlet air and return air are stable, record the readings of time-dependent outlet air temperature and observe if the inlet and outlet water temperatures are stable.

Use the control panel to start the manual mode and increase the opening (above 75%). Due to the internal delay of the system, the outlet air temperature will change over time.25

Execute the Modbus Recorder* program via the RS485 interface and calculate Td and T values. The definition is as follows: T=1.5 x (T2-T1) [the time difference between 28.3% (T1) and 63.2% (T2) x 1.5] Td (Pseudo Dead Time) may be defined as Td= T1 –T

• Various OS versions of this tool can be found at http://www.modbustools.com/modbus_poll.html

Calculate the best PID values in different modes in accordance with the below table: Mode Gain Reset** Derivative** P tau/ (Td x G*) PI 0.9 tau/ (Td x G*) 0.3/ Td PID 1.2 tau/ (Td x G*) 0.5/ Td 0.5 Td

• G (response gain): it varies with opening values and therefore, the medium opening or the opening at a medium flow rate is selected as the reference point. ** Reset and Derivative are defined: Reset=I/P, Derivative=D/P

The I and D values can be found from the Reset and Derivative values.

Enter the PID values found on the control panel, start the automatic mode and observe any temperature oscillations. If the temperature is stable, record the value on a sheet of paper and input the adjusted set values (including supply air and return air temperature and humidity, fan speed, inlet water temperature, and outlet water temperature) via the SNMP interface.

Operation trial 1. Confirm that the cooling unit is in automatic mode and observe if the supply and return air temperature and humidity, water flow rate and water temperature are stable. 2. Change the set point, record the stability time (reaching the set point of supply air temperature) via the SNMP interface, and observe if there is instability and temperature oscillation.

5.2 Control Panel Operation

System Mode ON Standby No. Button Description 1 ESC Returns to previous screen or cancels current operation.

Enters your selected item or confirms your selection or setting.

Goes back to previous screen, moves up or increases number.

Goes to next screen, moves down or decreases number. After entering a screen, if its options exceed four, you may press

to advance the page. Press for a highlighted zone to appear within the current selected page. Press to move the highlighted zone. To enter or change values (such as password or temperature), use . Press to skip to next field. In the last field, press to store and submit. Press ESC to cancel the current operation. If the unit becomes idle, the LCD and backlight will automatically turn off. Note: The default language of the control panel is English. The path for setting your preferred language is Main Menu

5.3 Status Screen and Main Menu

The LCD and backlight will turn off when the unit is idle. Press to wake up the backlight and display the status screen. On the status screen, the air supply status and the air flow percentage of the fans is shown. The air flow percentage represents the fan speed and the more solid status bars shown indicate higher fan speed. In the status screen, press to enter the Main Menu shown below. If an alarm occurs, press and you will see a screen display the description of the alarm. Power ON/OFF Status Setting Administrator

Status View the system, run hours and event log.

Setting (User’s password required) Adjust the set point, local setting, controller setting and alarm setting.

Administrator (Admin password required) Enter the manual mode to view the firmware version and system setting.28

The cooling unit has two accounts. The administrator account has the highest authority and can alter all settings.The user account can only alter the system setting. Input Password

When you try to enter the Setting or Administrator screen, a password prompt will appear. If no operation is performed after login, the login status will become invalid after the system becomes idle. If you want to re-enter the above menu, you must re-enter the password. In the password prompt screen, entering the admin password permits administrator use and entering the user password represents the permission of general users. If you only enter the Power ON/OFF or Status screen, no password is required. The user’s default password is 0000. Note: To avoid unauthorized access and changes to important settings, do not disclose the admin password. To obtain the admin password, contact your service personnel.

The cooling unit has five operation modes: Operation mode Description Automatic mode Path: Main Menu

To get the cooling unit to automatically control its cooling capacity, select the automatic mode and the system will automatically micro-adjust the fan speed and the opening of the three-way ball valve in accordance with the set points. You may also simultaneously press for three seconds in any screen to quickly switch between the automatic mode and the standby mode. Note: In the manual mode, simultaneously pressing for 3 seconds will NOT make the unit automatically enter automatic mode or standby mode. Standby mode Path: Main Menu

Standby In standby mode, the fans run at the minimum speed, the three-way ball valve is fully closed and the chilled water goes through bypass without passing the coil. Manual mode Path: Main Menu

Manual Mode The manual mode is used to test if the components work normally or to make the system operate in accordance with the manual setting. In this mode, you may manually set: fan speed, ball valve opening, indicator on-off, backlight on/off, buzzer on/off, alarm dry contact on/off and chiller’s water pump dry contact on/off. In the manual mode, press ESC to automatically return to the standby mode. Installation mode Path: Main Menu

Installation This mode is used to dehumidify and adjust the water balance. When it is started, the three-way ball valve will fully open and the fans will rotate at the minimum speed. When the system humidity falls within the acceptable operation range, the WARNING indicator will flash and the buzzer will issue 0.5 second beeps continuously until you leave the installation mode. For more information on the operating temperature and humidity, refer to 4.4 Operating Temperature and Humidity. Force mode Path: Main Menu

Controller The three-way ball valve is fully open and the fans run at the highest speed. This mode is generally used for unit testing or emergency cooling requests.29

In standby mode, the unit is still in power-on status! You must disconnect the input power to fully power the unit off in standby mode. To shut down the cooling unit, first enable standby mode. After selecting standby mode, select Y, then press to confirm. If the STANDBY indicator displays, the unit is in the standby mode. The cooling unit is still in power-on status and the fans will be running at the minimum speed. Next, disconnect the external power supply. Check to make sure the fans stop and the LCD is off.

5.7 Cooling Unit Settings

Supply Air T (temperature) In automatic mode, the cooling unit will automatically adjust the fans and three-way ball valve in accordance with the set supply air temperature.

:ON Language User PW Unit Delay On

System time Use to set up the system time, press to skip to the next field. Then press to confirm.

ID (Number) Represents the number of the cooling unit connected in series and also the ID in the Modbus protocol. The default number is 1. If several cooling units are connected in series, you must designate each unit with a different number.30

Buzzer Sets the buzzer on/off and issues an audible alarm to remind the user of any alarm events. The default is ON.

Language Set the display language. Select a language and press to confirm. The default is English (EN).

User PW To change the current user’s password, enter four digits.

Delay On Shows the time difference between setting the startup in automatic mode and the unit's actual operation. The cooling unit will start up in the seconds you have designated.

Baud Rate Sets the on-line speed based on the Modbus protocol. Options include 9600, 19200, 38400 and 57600. The default value is 9600.

Total Alarm Decides what event can trigger the output dry contact 1. Refer to the following:

1. All: Any alarm and fault event can trigger it.

2. Fault: Only fault events can trigger it.

1. Filters are clogged 5. High and low chilled water flow

2. Abnormal internal communication 6. High and low remote temperature and humidity

3. High and low air supply/return temperature and humidity 7. Maintenance overtime

4. High and low chilled water inlet/outlet temperature

1. Emergency stop/remote emergency stop 7. Abnormal remote sensor

2. Condensed water overflow 8. Abnormal chilled water inlet/outlet temperature sensor

5. Smoke 11. Abnormal three-way ball valve

6. Abnormal air supply/return temperature and humidity sensor31

Force Mode P Gain I Gain D Gain OFF

Force Mode When force mode is enabled, the fans will run at full speed and the three-way ball valve will fully open. Force mode is generally used for performance testing or a high heat load. If the STANDBY indicator on the control panel flashes, the unit is in force mode. Set the proportional constant, integral constant and derivative constant (PID). Refer to 4.7 PID Setting.

Min Flow T When the return air temperature is lower than this value, the fans will run at the minimum speed to save energy. The default is 25°C (77°F).

Max Flow T When the return air temperature is higher than this value, the fans will run at the maximum speed. The default is 40°C (104°F).

Fan Step Sets the fan speed (range: 0~15) in automatic mode. The default is 0 and the cooling unit will adjust the fan speed according to your setup.

Auto Recover When this function is enabled and the system is in automatic mode before powering off, the unit will directly return to the automatic mode at restart.

Intelligent Will display if the intelligent temperature control is enabled. This option only displays the status; you cannot change the setting. To change settings, refer to 5.7.10 Setting Automatic Control Mode.

Leak Cut-Off If this function is enabled, the unit will automatically shut down when water leakage is detected.

Set Alarm Sensor Alarm Actuator Alarm Out of Range Sets Sensor Alarm, Actuator Alarm and Out-of-Range Alarm. If an item display is , this item is disabled. Press at this item, use to select , and press to confirm the item is enabled. Note: When an alarm event occurs in manual mode, the indicator and buzzer will not activate, though the event will be stored in the event log.32

Fan 4 Abnormal Fan 5 Abnormal Fan 6 Abnormal Fan 7 Abnormal

Fan 8 Abnormal Enables/disables the alarm for ball valve and fan 1~8.

Remote Ch2 T Remote Ch3 T Remote Ch4 T Air Volume :---- C :---- C :---- C :----CMM Inquires about system-related information, including cooling capacity, supply air temperature and humidity, return air temperature and humidity, remote 1 temperature and humidity, remote 2 temperature, remote 3 temperature, remote 4 temperature, chilled water inlet/outlet temperature, chilled water flow rate, ball valve opening, ball valve command (set the ball-valve opening), fan command (set the fan speed), heater command, humidifier command, fan 1~8 failed, E.P.O. active, fire active, smoke active, filter failed, drain pan full, leak active (enable the leakage detection) and wire leak open (water leakage detector has open/short issues).

Number 12/01/01 <003>Exit Manual Mode :66/66 10:10:00 Inquires about the system and unit components for assistance in evaluating the component status and determining a repair or replacement time. System Filter Fan 1 Fan 2 2000h 720h 8000h 8000h

5.7.7 View / Clear Event Log

Event Log In this screen, the number of current events/total events is displayed. A maximum of 3,000 events can be recorded. Press to switch events. The events are numbered according to the occurrence time. The older the event, the smaller its number is. The digit in <> is the event code. If the records exceed 3,000, older events will be overwritten. An admin password is needed to clear any event log. The path is: Main Menu

Clear Log. Note: The event log is important information for evaluating the system status and also a reference for service personnel to perform maintenance. Therefore, do not clear the event log without authorization.

Type Installation Type Set Admin PW Clear Log OFF OPEN

Follows your data center’s cold/hot aisle configurations to set up the system type: OPEN or CLOSED.34

Factory Setting Reset Component Set Run Hours Time 1100h Restores all factory defaults, including the set options and user and admin passwords. The path for resetting a component’s operation time is: Main Menu

The restoration of factory defaults will reset the settings or parameters that have been changed! The cooling unit has selected different settings according to the different environment. Random restoration may lead to system error. System restorations should only be made by qualified service personnel.

Intelligent This unit supports two kinds of automatic control modes:

1. Intelligent control (default)

The system will automatically adjust the fans and the actuator in accordance with the set supply air temperature.

The system will make adjustment by PID parameters. When the unit enters automatic mode, the default setting is intelligent control. If the intelligent control mode is off, the system will automatically adopt the PID control. The admin password is required to turn the intelligent control on/off. After a component is changed, reset the operation time of Filter, Fan 1-8 and Ball Valve. System Filter Fan 1 Fan 2 Sure?

There are multiple ways to configure the unit:

• Web-based Interface: The interface offers comprehensive system management and monitoring. Refer to 6.1.1 Configuring via Web-Based Interface for more information.

• TLNET (System) Configurator: Use the downloadable TLNET Configurator utility to quickly set up the network interface over the network. Refer to 6.1.2 Configuring with TLNET (System) Configurator for more information.

• Telnet Mode: Configure the network interface over the network in text mode. Refer to 6.1.3 Configuring via Telnet for more information.

• COM Port: If a network connection is not available, the network interface can be configured through its COM port. Refer to

6.1.4 Configuring through COM Port for more information.

• When initially connected to the network, the unit will attempt to obtain an IP address via DHCP. If DHCP is disabled on the network, the unit can be accessed using its default IP address: 192.168.1.100.

• To ensure system security, it is highly recommended the account and password be changed after the first login.36

To set up the system via your web browser, follow the instructions below: Step 1: Use a Cat5 network cable to connect the interface’s network port to the network. Launch your web browser and enter the default IP address 192.168.1.100 in the address bar. Step 2: Log in as Administrator (default username/password: admin/password, case sensitive). Step 3: Click System g Administration g User Manager to set up accounts and passwords under the “Local Authentication” section. The access permissions for the account types are as follows:

1) Administrator: Allowed to modify all settings.

2) Device Manager: Allowed to modify device-related settings.

3) Read Only User: Allowed to view settings only.

Manually specify whether users are allowed to log in from other LANs. If login attempts from external connections are to be blocked, select Only in This LAN. Otherwise, select Allow Any. Step 4: Click System g Administration g TCP/IP to set Host Name, IP address, Subnet Mask and Gateway IP for the interface. Step 5: Click Time Server to manually set time and date for the system, or enable automatic time synchronization between the interface and the time servers. Note: To completely set up the network interface, refer to 7. Precision Cooling Dashboard Software.37

The downloadable TLNET Configurator utility (compatible with Windows

2000/2003/2008/XP/Vista/7) enables easy configuration and firmware upgrade of the system’s SNMP configuration. Follow the instructions below: Step 1: Use a Cat5 cable to connect the network port to the network. Step 2: Ensure the two DIP switches are set to the OFF position (Normal Mode) to enable network communication and that the workstation and the SRCOOL60KCW are on the same LAN. Step 3: Once downloaded, launch the Configurator. Step 4: Click Discover to search all available SNMP devices on the LAN. A list of devices will be shown. Notes:

• To search for SNMP devices in a different domain, change the Subnet and IPv4/IPv6 Prefix Length and click Discover.

• If the unit cannot be found, verify that UDP port 3456 on the workstation is open. Step 5: Select the SRCOOL60KCW to be modified from the Device List. Click Modify and enter the Administrator’s account and password (default: admin/password, case sensitive).38

6. Network Configuration

Step 6: Click Configuration to modify network settings.

6.1.3 Configuring via Telnet

Step 1: Use a Cat5 network cable to connect the network port to the network. Step 2: Connect the workstation (Windows or Linux) to the LAN that the SRCOOL60KCW is connected to. Step 3: For Windows, launch DOS prompt mode (Start g Run g key in cmd and press Enter). For Linux, launch Shell. Step 4: Enter telnet <<IP Address>> to initiate telnet connection with the unit. Step 5: When connection is established, enter an Administrator’s account and password (default: admin/password, case sensitive). The Main Menu will appear on the screen. Refer to 6.1.5 Configuring via Text Mode for more information. Notes:

• The unit will terminate any idle connections after 60 seconds.

• For complete configuration, refer to 7. Precision Cooling Dashboard Software.39

6. Network Configuration

6.1.4 Configuring through COM Port

If a network connection is not available, the system can be configured via COM port connection. Follow the instructions below: Note: If running a non-Windows system, refer to your system’s user manual for Telnet clients. Step 1: Use the provided RJ45 to DB9 cable to connect the SRCOOL60KCW’s COM port to the workstations’ COM port. Step 2: Ensure the two DIP switches are set to the OFF position (Normal Mode). Step 3: For Windows 2000, 2003, 2008 and XP, go to Start g Programs g Accessories g Communications and select HyperTerminal. Note: Microsoft

has removed HyperTerminal from Windows Vista and later versions. If the OS does not include the program, a free alternative Telnet/ SSH client PuTTY can be downloaded from http://www.putty.org. Step 4: Enter a name, choose an icon for the connection and click OK. From the Connect drop-down menu, select the COM port that is connected to the SRCOOL60KCW. Step 5: Click Configure and set up COM port parameters as follows: Step 6: Click OK to continue. Set the two DIP switches to the ON position (Configuration Mode). HyperTerminal will automatically connect to the system; if it doesn't, click the telephone icon in the tool bar. When a connection is established, log in with an Administrator’s account/password (default: admin/password, case sensitive). Once logged in, the Main Menu appears on the screen. Refer to the next section for more information.40

This section contains descriptions and default settings for configuration using a Telnet/SSH client such as HyperTerminal or PuTTY. Main Menu User Manager No. Item Description Default [1] RADIUS Auth Specifies whether RADIUS is allowed. Disable [2] Server The RADIUS server’s name. [3] Secret The RADIUS secret. [4] Port The RADIUS port number. 1812 [5] Administrator Account The Administrator’s default account/password (case sensitive). admin [6] Administrator Password password [7] Administrator Limitation Restricts Administrator login area. Only in This LAN [8] Device Manager Account The Device Manager’s default account/password (case sensitive). This account is only permitted to change device- related settings. device [9] Device Manager Password password [a] Device Manager Limitation Restricts Device Manager login area. Only in This LAN [b] Read Only User Account The Read-Only User’s default account/ password (case sensitive). This account is only allowed to view settings. user [c] Read Only User Password password [d] Read Only User Limitation Restricts Read-Only User login area. Allow Any41

The IPv4 gateway’s IP address.

The IPv6 gateway’s IP address. [9] IPv6 DNS IP IPv6 Domain Name Server’s IP address. [a] DHCPv6 Enable/ Disable DHCPv6 protocol. Enable [b] Host Name (NetBIOS) The Host Name for the network interface. TLNET [c] System Contactor The System Contact information. [d] System Location The System Location information. [e] Auto- Negotiation Enable/disable automatic transfer rate (10/100Mbps) negotiation. Enable [f] Speed If the Auto-Negotiation is disabled, you can specify the transfer rate. 100M [g] Duplex If the Auto-Negotiation is disabled, you can specify the duplex mode. Full [h] Status Stable Status change confirmation check time.

[i] Telnet Idle Time Telnet connection time-out setting. 60 Seconds42

6. Network Configuration

No. Item Description Default [1] Time Selection SNTP or manual. SNTP [2] Time Zone Adjust your time zone. +0 hr [3] 1st Time Server The first time server for SNTP.

[4] 2nd Time Server The second time server for SNTP.

[5] Manual Date Set the date manually. 01/01/2000 [6] Manual Time Set the time manually. 00:00:00 Time Server You can manually adjust time and date or set up automatic time server synchronization. The SRCOOL60KCW, Windows XP and later versions support SNTP (Simple Network Time Protocol). Soft Restart Reset the interface. This will not affect the operation of the cooling unit. Default Reset Reset to factory defaults. Exit Without Saving Exit and ignore changes. Save and Exit Preserve your changes and exit.43

7. Precision Cooling Dashboard Software

To configure the system via the Precision Cooling Dashboard, follow the steps below: Step 1: Ensure the SRCOOL60KCW is connected to the LAN. Step 2: The login page will appear when a connection is established. Enter the user name (default: admin) and password (default: password). Notes:

• If unable to log in with the correct user name and password, additional network configuration may be needed. The IP subnet of the computer may be different from the SRCOOL60KCW.

• The SRCOOL60KCW will automatically log off if the connection is idle for 30 minutes. The Precision Cooling Dashboard contains three main sections: Monitor, Device and System. Refer to Sections 7.1 and 7.2 for more information.

From the Monitor page, you can find the cooling unit’s status and information. The information will be updated every 10 seconds or you can press F5 to refresh immediately. Signal Color Meaning Gray No function. Green Normal operation. Red Alarm or warning.44

Event Log You can query the entire event log from this page instead of from the cooling unit’s LCD. All event logs can be saved as an Excel file by clicking Download All. Data Log All of the cooling unit’s historical information can be found on this page. The Data Interval can be set accordingly, with the default value listed as 0 (this also indicates no record on file). Query periods can also be assigned by the user to show records within a specific parameter set for a given period. Records can also be copied to Excel by clicking Select current to copy. From the pop-up window, press CTRL+C to copy and CTRL+V to paste all records into the Excel sheet. All recorded data will be erased when Clear History Data is clicked.

The System pages are accessible only to users with Administrator privileges.

7.2.1 Administration

User Manager The system supports RADIUS. Check the Use RADIUS box, enter the required Server, Secret and Port (default: 1812) information, then click Submit. The three user levels can be defined. If RADIUS is disabled, the Account Name, Password and Login Limitation can be managed via Local Authentication. TCP/IP46

2) IP Address: The IP address in dotted format.

3) Subnet Mask: The Subnet Mask for the network.

4) Gateway IP: The IP address for the network gateway in dotted format.

5) DNS IP: The IP address Domain Name Server in dotted format.

6) Search Domain: If the domain entered cannot be found, the system defaults to the Host Name.

2) IP Address: The IPv6 address.

3) Prefix Length: The prefix length for the IPv6 address.

4) Gateway V6IP: The IP address for the IPv6 network gateway.

3) System Location: System location information.

1) Auto-Negotiation: Enable/Disable automatic transfer rate (10/100Mbps) negotiation.

2) Speed: If the Auto-Negotiation is disabled, the transfer rate can be specified.

3) Duplex: If the Auto-Negotiation is disabled, the duplex mode can be specified.

1) HTTP: Enable/ disable HTTP connection.

• SSL Certificate 1) To ensure connection security between the SRCOOL60KCW and the connecting workstation, an SSL certificate can be used to encrypt and secure the integrity of transmitted data.

2) Certificate File: Supports PEM format which is generated by OpenSSL. Click Choose File to upload a certificate file.

Note: For more information about generating a private SSL certificate file, visit http://www.openssl.org/. Console

• Host Key/ Authentication Public Key: Supports files generated by OpenSSH, including DSA, RSA, and Authentication Public Keys. FTP

• FTP: Enable/ disable FTP connection.

Time Server The time and date can be manually entered or automatically synchronized with SNTP servers. If the SNTP server is not responsive, the event and data log will not register even when SNTP is enabled.

• Simple Network Time Server

1) Time Zone: From the dropdown menu, select the time zone for the location where the SRCOOL60KCW is located.

2) Primary/Secondary Time Server: Two time servers can be added. Every 60 minutes, the system synchronizes with the first

3) Enable Daylight Saving: Check to enable daylight saving time.

• Manual If a time server is not accessible, the interface is restarted. Time and date is reinstated to previously assigned settings. Syslog Syslog is used to store the event log on remote Syslog servers. This will not affect the local event log. Upon selecting the Enable option, enter the IP Addresses of up to four (max) Syslog servers.49

7. Precision Cooling Dashboard Software

Upgrade The Upgrade page shows the current firmware version. Click Browse to locate and select the firmware file to be used, then click Upload. The upgrade process should take about one minute.

SNMP Access The system supports SNMP protocol and SNMP NMS (Network Management System), which are commonly used to monitor network devices. To prevent unauthorized access, the NMS IP addresses community strings and access levels for authorized users can be specified. The maximum number of IP entries is 256. Note: If IP address 0.0.0.0 is entered, the NMS IP access restriction is ignored. The system checks the community string to identify the configured access level and permission.50 SNMPv3 USM SNMPv3 offers features such as packet encryption and authentication to improve security. The SNMPv3 USM (User Session Management) allows assignment of eight User Names whose access is granted via SNMPv3 protocol. Their respective Security Levels, Auth Passwords, Priv Passwords and Access Levels can also be defined. SNMP Trap SNMP Traps alert users to specific events that occur in the monitored environment. SNMP Trap recipients must be added to the Target IP list by entering in their IP Addresses and related parameters, then clicking Add. Click the Update button to modify entries in the list. Items can be removed by clicking the Delete button. Note: Supports SNMPv1, SNMPv2c and SNMPv3 traps. For SNMPv3 traps, specify an SNMPv3 USM User Name. Use Event Level to determine what event notifications should be sent to which Target IP Address. Five event levels are listed as:

• None: No event notifications are sent to the target address.

• Information: All event notifications are sent to the target address.

• Warning: Both Warning and Alarm event notifications are sent to the target address.

• Alarm: Only Alarm event notifications are sent to the target address.

• Shutdown Agent: All event notifications are sent to the target address. Go to Monitor g Information g ShutdownAgent to review your designated PC’s shutdown information.

Mail Server Set up an SMTP Server and specify a list of E-mail recipients who will receive notifications when events occur. The maximum number of recipients is 256. Note: If a DNS server is not available in the network, manually assign an SMTP server address to enable the E-mail notification system.

• SMTP Server Name or IP If a Host Name is entered, a DNS IP should be added in TCP/ IP. See 7.2.1 Administration for more information.

• Receiver The recipients’ E-mail addresses.

• Event Level Select the Event Level that when triggered, an E-mail notification is sent to the corresponding recipient.

1) Information: All event notifications are sent to the target address.

2) Warning: Warning and Alarm event notifications are sent to the target address.

3) Alarm: Only Alarm event notifications are sent to the target address.52

9. Maintenance and Cleaning

8. Optional Accessories

Periodic inspection and cleaning of the cooling unit can guarantee the equipment to operate at optimal performance. Internal components such as the fans and condensed water pan need periodic cleaning and inspection. This unit contains replaceable components whose cleaning and inspection should only be performed by qualified service personnel.

9.1 Firmware Upgrade

For firmware upgrades, contact service personnel.

If you do not use this unit for an extended period, it is recommended to cover the unit using the original packing material and store it in a place with well-controlled temperature and humidity (-15~65°C / 5~149°F; 0~95% RH, non-condensing), and free of corrosive substances, accumulated dust and pollutants. Do not place the unit horizontally or deposit external items in or on the cabinet. Note: For more information on maintenance and cleaning, contact Tripp Lite Customer Service. Do not perform maintenance unless properly trained to do so. There are several optional accessories available for the SRCOOL60KCW. Please refer to the table below for the optional accessories and their descriptions. Item Function SRCOOL60KTP Top pipe installation kit. SRCOOL60KWDR Water leak detection rope kit. SRCOOL60KRT Remote temperature sensor. SRCOOL60KRTH Remote temperature and humidity sensor. Notes: 1. For detailed installation and operation of any accessory mentioned above, please refer to the Quick Start Guide, Owner’s Manual or Installation & Operation Guide included in the package of the relevant optional accessory. 2. To buy any of the above Tripp Lite accessories, contact your local sales representative or Tripp Lite Customer Service.53

The following troubleshooting actions should only be carried out by qualified service personnel. Unauthorized action may lead to severe injuries or equipment damage. System Troubleshooting: No. Abnormal phenomenon Possible cause Solution

The fans do not start. The power supply is faulty. Make sure the input voltage is within the permissible range, the circuit breaker or switch is set at ON, and the cooling unit is correctly grounded. The fans are faulty. Make sure each fan is wired correctly and change the faulty fans, if necessary.

The cooling unit does not start. The input voltage is abnormal. Make sure the input voltage is within the permissible range, the circuit breaker or switch is set at ON, and the cooling unit is correctly grounded.

Forgot the password. Forgot the user password or admin password. Contact service personnel.

The operation noise is too high. Foreign matter is attached to the fans or the fans' ball bearings are damaged. Inspect and clean the fans. The fan speed is too high. Check if the fans are running at full speed. Adjust the set point or the fan speed accordingly. There is foreign matter or impurities in the pipeline. Inspect the Y-type filter of the external piping and clean it, if necessary.

LCD is functioning improperly or does not display. The wiring is faulty. Inspect to ensure the control panel wiring is correct. If necessary, restart the cooling unit.

The alarm functions properly, but the buzzer does not buzz. The buzzer is not enabled. Use the control panel to enable the buzzer alarm function. Path: Main Menu

The set point cannot be reached. The fans are old or faulty. Inspect the fans and change the faulty ones, if necessary. The sensor detection is abnormal. Inspect the sensors. The PID parameters are wrong. Refer to 4.7 PID Setting. The heat load exceeds the cooling capacity. Reduce the heat load or increase the number of cooling units. The filters are clogged. Replace or clean the filters. The coil is blocked. Perform the coil washing procedures. The chilled water flow rate is insufficient or its temperature is too high. Inspect the flow rate and temperature of the chiller (5~15°C / 41~59°F is ideal). The control module has failed. Repair or replace the control box. The actuator is faulty. Repair or replace the actuator.

There is standing water in the cabinet. The humidity is too high. Use an external dehumidifier to control the data center’s humidity or enable the force mode to reduce the internal humidity of the data center. The inlet water temperature is too low. Adjust the water supply temperature of the chiller (5~15°C / 41~59°F is ideal). The fan speed is too low. Adjust the fan speed. The drain pump is abnormal. Confirm the drain pipe functions are normal. The piping is faulty. Inspect to see if the chilled water pipeline and other pipelines are normal.54 No. Abnormal phenomenon Possible cause Solution

There is water leakage from the cabinet's bottom. Condensed water is overflowing. Observe if the water level in the condensed water pan is too high, inspect the condensed water pump or make sure the condensed water pipe (not bent, damaged or blocked) is correctly connected and drainage is normal. If upper piping with condensed water pump is adopted, the vertical lift should not exceed 5 m (16 ft.). The pipe system leaks. Inspect and repair the leaking site. The cabinet is not on a leveled base. Use the levelers to level the cabinet. The thermal insulating rubber layer of pipe is damaged. Inspect and repair the damage.

The remote sensor signals are abnormal. The remote sensors are not correctly located. Inspect each remote sensor’s position.

The three-way ball valve has no response. The actuator is not correctly connected. Reset the actuator.

Unit is unable to get on-line via the Modbus protocol. The RS-232 or RS-485 connector is not correctly connected. Check the connections. The Baud rate setting is abnormal or the ID does not match. Re-confirm the Baud rate and ID. LCD Alarm Information and Troubleshooting: No. Alarm Information Possible cause Solution

Filter Abnormal The filters are clogged by foreign matter or are old. Clean or replace the filters.

Drain Pan Full The condensed water pipe or the condensed water pump is faulty. Remove the surplus water, inspect the condensed water pump or make sure the condensed water pipe (without bending, damage or blockage) is correctly connected and drainage is normal. If upper piping with condensed water pump is adopted, make sure the vertical lift does not exceed 5 m (16 ft.).

EPO Active Emergency shut off has been triggered due to leakage.

1) Ensure the water leakage detector is dry and

simultaneously press the keys for 3 seconds to resume normal operation.

2) If the water leakage detector cannot dry within a short

time, go to Setting g Controller g Leak. Cut-Off to disable ‘Leak. Cut-Off’ function and follow the actions mentioned in 1).

Leak Active Leakage is detected. Remove the surplus water and inspect the water level of the condensed water pan. Inspect if the drain function is normal and confirm the condensed water pipe is not bent, damaged or containing blockage. If the upper piping configuration is used, the vertical lift should not exceed 5 m (16 ft.).

Fire Active Fire detection is triggered. Inspect the environment and eliminate the abnormality.

Smoke Active Smoke detection is triggered. Inspect the environment and eliminate the abnormality.

Comm Abnormal The CAN-Link port wiring is wrong or the unit ID is repeated. Inspect the CAN-Link port wiring and confirm the cooling units connected in series have independent and non-repeated IDs.

Return/Supply Sensor The air return/supply sensor is faulty or experiencing a bad connection. Inspect the air return/supply sensor and confirm the proper wiring connection.

Remote Sensor 1-4 The # remote sensor is faulty or experiencing a bad connection. Inspect the function of the # remote sensor and confirm the proper wiring connection.

Water In Sensor The chilled water inlet temperature sensor is faulty or experiencing a bad connection. Inspect the function of the chilled water inlet sensor and confirm the wiring is ok.

Water Out Sensor The chilled water outlet temperature sensor is faulty or experiencing a bad connection. Inspect the function of the chilled water outlet sensor and confirm the proper wiring connection.

Flow Meter The flow meter is faulty or iexperiencing a bad connection. Inspect the function of the flow meter and confirm the proper wiring connection.

Fan 1-8 Failed The # fan is faulty or experiencing a bad connection. Inspect if the # fan is blocked or faulty and confirm the proper wiring connection.

Ball Valve Error The three-way ball valve is faulty. Inspect the three-way ball valve.

1) The environment temperature

and humidity are abnormal.

2) The alarm setting is abnormal.

3) The temperature sensor is

4) The load is too large.

1) Ensure the environment temperature and humidity are

within the operational range.

2) Ensure the out-of-range alarm setting is correct.

3) Inspect the temperature sensor function.

4) If the temperature is still too high after eliminating the

above problems, confirm the load does not exceed the cooling capacity of the cooling unit.

Water In T High 1) The temperature or flow rate of the chilled water supplied by the chiller is abnormal.

2) The alarm setting is abnormal.

1) Inspect the temperature and flow rate of the chilled water.

2) Ensure the out-of-range alarm setting is correct.

Run Over Hours The periodic maintenance has not been performed. To guarantee the normal operation of the system, perform maintenance immediately.

Leak Wire Open The water leakage detector is not correctly connected. Inspect if the water leakage detector is loose, in bad contact or broken. Note: If the alarm still goes off after the above possible causes are eliminated, please contact Tripp Lite Customer Service.56

1. Refer to the unit's rating label for the safety rating.

2. All specifications are subject to change without prior notice.

• Testing conditions for rated cooling capacity: Return air temperature: 40.6°C DB/ 21.6°C WB/ chilled water inlet temperature degree: 7°C/ chilled water outlet temperature degree: 15.8°C. ** Testing conditions for the maximum cooling capacity: Return air temperature 48.9°C DB/ 23.9°C WB/ chilled water inlet temperature: 7°C/ chilled water outlet temperature: 15.4°C.57

Appendix 2: Periodic Inspection / Maintenance List

Monthly Inspection/Maintenance List Date: Model: By: Environment inspection The cooling unit is installed in? _____________________ Is it free of dust and surplus moisture?

Is the cabinet appearance without damage?

Supply air temperature

degree (s) Chilled water outlet temperature

degree (s) Supply air set point

degree (s) Can the cooling unit reach the set point?

Internal inspection Are there any impurities or foreign matter in the condensed water pan?

Replacement or cleaning is needed Does the water in the condensed water pipe flow smoothly?

Do the fans function normally and rotate without interference?

Does the drain pump function normally?

Be sure to disconnect the input power before making the following inspections. Are the electrical joints stable and free of foreign matter?

Does the input power match the rated value of the cooling unit?

NOTES: Signature: ______________________________________ Please copy this page for use during the inspection/maintenance procedures.58

Appendix 2: Periodic Inspection / Maintenance List

Quarterly Inspection/Maintenance List Date: Model: By: Cleaning: Clean the following components. Use an air gun, if necessary. Filters (replace if necessary)

Replaced Front/rear doors and side panels

Completed Be sure to disconnect the input power before cleaning the following components. Condensed water pan

Completed Condensed water pipe

Completed General inspections Is the water supplied by the chiller normal?

Does the alarm system operate normally?

Does the unit operate normally in all modes?

NOTES: Signature: ______________________________________ Please copy this page for use during the inspection/ maintenance procedures.59

Appendix 3: Glycol Correction Table

Appendix 4: Warranty and Product Registration

Water-side pressure drop* 1.00 1.04 1.11 1.17 1.25 1.34 Note: The correction parameters are based on the correction values under the following working conditions: Return air temperature: 29.4°C DB/ 18.1°C WB; air volume: 4930m³/h; temperature difference of chilled water 7.2°C; chilled water flow rate: 62 Lpm.

• Multiply the values read from the unit by the above parameters and the results are taken as the corrected cooling capacity and water-side pressure drop. ** The maximum brine adding proportion of the unit is 50%. 2-Year Limited Warranty Seller warrants this product, if used in accordance with all applicable instructions, to be free from original defects in material and workmanship for a period of 2 years (except U.S., Canada and Mexico: 1 year) from the date of initial purchase. If the product should prove defective in material or workmanship within that period, Seller will repair or re- place the product, in its sole discretion. Service under this Warranty includes parts and Tripp Lite service center labor. On-site service plans are available from Tripp Lite through authorized service partners (in most areas). Visit www.tripplite.com for details. International customers should contact Tripp Lite support at intlservice@tripplite.com. THIS WARRANTY DOES NOT APPLY TO NORMAL WEAR OR TO DAMAGE RESULTING FROM ACCIDENT, MISUSE, ABUSE OR NEGLECT. SELLER MAKES NO EXPRESS WARRAN- TIES OTHER THAN THE WARRANTY EXPRESSLY SET FORTH HEREIN. EXCEPT TO THE EXTENT PROHIBITED BY APPLICABLE LAW, ALL IMPLIED WARRANTIES, INCLUDING ALL WARRANTIES OF MERCHANTABILITY OR FITNESS, ARE LIMITED IN DURATION TO THE WARRANTY PERIOD SET FORTH ABOVE; AND THIS WARRANTY EXPRESSLY EXCLUDES ALL INCIDENTAL AND CONSEQUENTIAL DAMAGES. (Some states do not allow limitations on how long an implied warranty lasts, and some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you. This Warranty gives you specific legal rights, and you may have other rights which vary from jurisdiction to jurisdiction). Tripp Lite; 1111 W. 35th Street; Chicago IL 60609; USA WARNING: The individual user should take care to determine prior to use whether this device is suitable, adequate or safe for the use intended. Since individual applications are subject to great variation, the manufacturer makes no representation or warranty as to the suitability or fitness of these devices for any specific application. PRODUCT REGISTRATION Visit www.tripplite.com/warranty today to register your new Tripp Lite product. You’ll be automatically entered into a drawing for a chance to win a FREE Tripp Lite product!*

• No purchase necessary. Void where prohibited. Some restrictions apply. See website for details. Regulatory Compliance Identification Numbers For the purpose of regulatory compliance certifications and identification, your Tripp Lite product has been assigned a unique series number. The series number can be found on the product nameplate label, along with all required approval markings and information. When requesting compliance information for this product, always refer to the series number. The series number should not be confused with the marketing name or model number of the product. WEEE Compliance Information for Tripp Lite Customers and Recyclers (European Union) Under the Waste Electrical and Electronic Equipment (WEEE) Directive and implementing regulations, when customers buy new electrical and electronic equipment from Tripp Lite they are entitled to:

• Send old equipment for recycling on a one-for-one, like-for-like basis (this varies depending on the country)

Force Mode P Gain I Gain D Gain OFF

:ON Language User PW Unit Delay On

Force Mode P Gain I Gain D Gain OFF

Fan 4 Abnormal Fan 5 Abnormal Fan 6 Abnormal Fan 7 Abnormal

System Filter Fan 1 Fan 2 Sure?

Force Mode P Gain I Gain D Gain OFF

:ON Language User PW Unit Delay On

Force Mode P Gain I Gain D Gain OFF

Fan 4 Abnormal Fan 5 Abnormal Fan 6 Abnormal Fan 7 Abnormal

System Filter Fan 1 Fan 2 Sure?

6. Configuration Web/SNMP

6. Configuration Web/SNMP

6. Configuration Web/SNMP

6. Configuration Web/SNMP

6. Configuration Web/SNMP

6. Configuration Web/SNMP

6. Configuration Web/SNMP

6. Configuration Web/SNMP

Force Mode P Gain I Gain D Gain OFF

:ON Language User PW Unit Delay On

Force Mode P Gain I Gain D Gain OFF

Fan 4 Abnormal Fan 5 Abnormal Fan 6 Abnormal Fan 7 Abnormal