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Turn the power on by closing both breakers on the busway drop box (2).
6.
Fans
IT cooling fan
HP POD 20c fans operate at four speeds to maintain the cold-to-hot aisle differential pressure and hot aisle
temperature setpoints that are programmed into the ECS.
The fan speed adjusts to maintain the programmed setpoints. Do not manually adjust the fan speed.
CAUTION:
a fan or fan bank.
CAUTION:
the fan. De-energizing working fans reduces the IT cooling airflow within the zone. Take this into
consideration when deciding whether to continue operating IT equipment within the affected
zone. HP recommends powering down all of the IT in the zone.
IMPORTANT:
Power must be removed from the fan power assembly before removing or replacing
De-energize any additional working fans within the affected zone before replacing
HP recommends leaving the fans in AUTO mode during normal operation.
Removal and replacement procedures 22
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