LogiCool InRak™
IT Cooling
76 InRak™ Technical Manual 7462807 V1.11.0_04_2016
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Commissioning
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.
Dual power Supply
Check that the two power supplies are live. Ensure that the Dual power supply LED
illuminate with correct power source.
Uninterrupted
Power Supply
The UPS requires charging for a period of 8 hours before the internal battery can
supply the rated backup time. The UPS charges the battery as soon as it is connected
to the AC power supply.
Following its initial charge the UPS can be changed over to operate on battery power.
During battery operation an audible alarm beep will sound every 10 seconds. Low
battery warning the alarms beeps every 3 seconds. Automatic shutdown is imminent.
Upon return of AC input power the UPS will restart automatically (unless the restart
function has been disabled via UPS personalisation).
Static Transfer
Switch
The static transfer switch is to be commission as per the manufacturer’s instructions.