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Note: Other industrial cooling distribution units can be used in a secondary
cooling loop with the rear-door heat exchanger, if they meet the specifications and
requirements that are described or referred to in this document.
Maintenance schedule
Maintenance tasks are required at certain time intervals.
Table 42. Eaton-Williams cooling distribution unit specifications (continued)
Performance
Pump capacity (design flow)
Maximum pump head pressure
Coolant (liquid) type
Primary liquid connections
Secondary liquid connections
Unit internal primary circuit liquid capacity
Unit internal secondary circuit liquid
capacity
Noise
Electrical
Power supply
Maximum power consumption
Physical
Height
Width
Depth
Weight (empty)
Weight (filled)
Task
Check the manifolds for temperature (make sure that the
top of the manifolds is cool) and sounds of air in the
system to ensure that the exchanger is correctly filled.
Inspect the heat-exchanger fins for air blockage at the fins
(such as dust, dirt, and debris)
Inspect the entire length of the supply hose and return hose
for damage, age cracks, and kinks. Be sure to inspect at the
door and outside of the rack.
Properties
240 L/min (63.4 GPM)
355 kPa (51.5 psi) at design duty, excluding
cabinet losses
Chilled water (with up to 30% glycol)
1 1/2 in. flex tail for sweat connection, top
or bottom
3/4 in. quick connects, hydraulic ISO-B
Approximately 10.0 liters (2.6 gallons)
Approximately. 32.0 liters (8.5 gallons)
< 55 dBA at 3 meters
200 - 230 V, 3Ø, 50/60 Hz or 400 - 480 V, 3Ø,
50/60 Hz
5.6 kVA at 480 V, 4.9 kVA at 208 V
1825 mm (72 in.)
800 mm (31.5 in.)
1085 mm (43 in.)
396 kg (870 lb)
438 kg (965 lb)
Schedule
One month after installation
and again annually
Annually
Annually
Chapter 10. Planning for the rear-door heat exchanger
91
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