WL 3000

WL 3000
User Manual
Innovative Technology
for a Connected World
Coolant inlet and outlet are marked with symbols: Inlet: O; outlet: O
CAUTION: READ MANUAL BEFORE OPERATING COOLING UNIT
– Input power must be rated for 230 VAC at 50 or 60 Hz.
– Use water or water/glycol as coolant.
– Run the cooling unit at the correct coolant level,
otherwise cooling capacity will be reduced.
– Clean the filter periodically, otherwise the pump may degrade over time.
– Use cooling hoses that can handle max pressure of liquid circuit and is
resistant to corrosion from coolant.
-–Never operate the unit if it is damaged or leaking.
– Before starting any service work on the cooling unit, please disconnect
from the main power source.
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Liquid Cooling System
User
Manual
Table of contents
Pg No.
1 Description 2
2 Technical Data
3
2.1 Physical Dimensions 3
2.2 Performance Data
3
2.3 Environmental Specifications 3
2.4 Settings 3
3 Operational Settings 4
4 Maintenance 5
4.1 Heat exchanger 5
4.2 Pump 5
5 Placing out of Operation
6
6 Spare Parts List and Illustration
6
7 Liquid and Electrical Diagram
8
Description
The WL 3000 cooling unit is intended to remove heat from a liquid circuit. The coolant can be either water or a
mixture of water and water-glycol (antifreeze). Water circulates in a closed loop between the ambient cooling system
and a cold plate at the heat source. Heat is removed from water by an air-cooled heat exchanger. The capacity
of the cooling unit is dependent on the temperature differential, which is defined as the difference between the
ambient temperature and the water outlet temperature. The cooling unit is designed to remove 3000 W of heat at
a temperature differential of 11.5°C. The maximum forward pressure is limited by a bypass valve, which has been
integrated into the pump. The coolant flow is controlled by a flow switch that opens when flow falls below a set
rate. Cooling hoses supplied by user are connected to threaded nozzle that can accommodate a 9 mm hose ID.
Note: Flow switch and bypass valve are adjusted at factory according to specifications in this document.
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2 technical data
2.1 Physical dimensions
• Length: 479 mm
• Width: 398 mm
• Height: 481 mm
• Weight: 38.5 kg without filling
• Coolant capacity: 3.7 L
2.2 Performance data
• Cooling capacity: 3000 W
• Flow rate: 6.0 L/min at 4 bar
• Mains voltage: 230 V ± 10% / 50/60 Hz
• Current consumption: 2.5 A
• Noise level: 55 dB(A) (50 Hz)
59 dB(A) (60 Hz) distance 1 m in any direction
2.3 Environmental specifications
• Ambient temperature: +5°C to +40°C
• Storage temperature: -25°C to +70°C (storage without water)
• Air humidity: 20% to 80%
2.4 Settings
• Maximum forward pressure: 8 bar ± 0.5 bar
• Flow switch open: 4 l/min
• Thermal switch open: 35°C (not adjustable)
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3 operational settings
1.Position the cooling unit horizontally and keep obstructions away from the air inlet to allow
for sufficient air circulation.
2. Remove the reservoir cap.
3. Connect the external hoses supplied by the user.
4.Insert the cable and connect the cable to the terminals according to the terminal diagram;
use a 3 mm screwdriver to connect the wires to the terminal block.
5.Fill the cooling unit with approximately 3.7 L of coolant.
Note: The coolant level must be approximately 3 cm above the fins to maintain peak
cooling performance, otherwise the cooling capacity will be reduced.
6. Allow the cooling unit to run for 10 minutes and deaerate the liquid circuit.
7. Check the coolant level and refill if necessary.
8. Close the reservoir cap.
Reservoir Cap
Grounding Bolt M5
Terminal according to diagram
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4 Maintenance
Check the coolant level and antifreeze regularly and refill if necessary.
4.1 Heat exchanger
In order to achieve maximum cooling capacity, the heat exchanger of the cooling unit must be kept clean.
Check the heat exchanger every three months for cleanliness. If cleaning is required, perform the following:
1. Disconnect the cooling unit from the main power source.
2. Remove the side cover.
3. Clean the heat exchanger with compressed air, a damp cloth or shop vacuum.
4. Mount the side cover.
4.2 Pump
The pump has incorporated a coolant filtering mechanism to keep debris out of the pump. It is
recommended to check the filter every three months to make sure it is clean. If cleaning is required,
then perform the following:
Note: If the filter is not cleaned, then degradation to pump may occur.
1.
Disconnect the cooling unit from the main power source and external hoses.
2.
Drain the coolant from the reservoir.
3.
Remove the side cover.
4.
Close the ball cock.
5.
Unscrew the filter cap with a wrench that can accommodate a 24 mm nut.
Note: Some coolant may run out from the pump. Collect in a suitable container.
6.
Remove the filter and clean with mild soap and water or replace.
7.
Insert the filter into the housing and tighten the nut.
8.
Open the ball cock.
Note: Do not operate the cooling unit when the ball cock is closed, as this can damage the pump.
9.
Mount the side cover and reposition the cooling unit on its legs.
10. R
efill the coolant in reservoir and run for 10 minutes to deaerate.
Check the coolant level and refill if necessary.
Ball Cock
System
Pressure
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5 Placing out of Operation
1. Disconnect the cooling unit from the main power source.
2. Remove the electrical connections.
3. Remove the hoses from the cooling unit.
4. Remove the cap and drain the coolant in a suitable container.
5. Mount the cap on the drain.
Cap
6 Spare parts list and Illustration
No.
Description
1
Cap
91729015
2
O-Ring for cap
93320812
3
Flow switch
95140538
4
Thermal switch
95160045
5
Lid
95179902
6
Motor
95205201
7
Pump
95205202
8
Flexible coupling
95205203
9
Fan
95251621
10
Capacitor for fan
95290701
11
Filter
6299012
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Code number
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WL 3000
Liquid Cooling System
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Manual
6 Spare parts list and Illustration
5
1+3
9
6
8
3
4
10
6
11
7
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7 Liquid and electronic schematic
Liquid Circuit Diagram
Electronic Schematic
THR-UM-WL-3000 0912
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not be liable for incidental or consequential damages of any kind. All Laird Technologies products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished
upon request. © Copyright 2012 Laird Technologies, Inc. All Rights Reserved. Laird, Laird Technologies, the Laird Technologies Logo, and other marks are trade marks or registered trade marks of Laird Technologies, Inc. or an affiliate
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