Airedale OnRak 3kW 35kW - Manual (Page 52)

LogiCool
™ OnRak
Active Cabinet Exhaust
IT Cooling
52
IT Cooling
Technical, Installation and Maintenance Manual :6912497 V1.5.0 02_2013
Commissioning Procedure
Fan Removal Alarm Check alarm state when a fan goes offline.
Differential Pressure The differential pressure switch should cause the OnRak fans to increase / decrease
when the server fans are active.
One of the fans can be removed to allow the differential pressure to be recognised if the
server load is low.
If the server discharge temperature is high the differential pressure feature becomes
second priority, ensuring that the cooling demand is satisfied.
Dew Point Control The dew point control feature will isolate the chilled water supply to the unit if the water
temperature falls lower than the dew point temperature of the air. The OnRak water
temperatures can be offset to produce this alarm through the maintenance parameter of
the controller.
Rack Support Wheel Ensure that the rack support wheel turns freely and supports the OnRak door when full of
water.