The HP POD 240e NA is equipped with 10 exhaust fans that remove heated air from the hot aisle. The exhaust fans feature an integrated monitoring function to protect the motor and electronics against damage from jamming, phase loss, or overheating.
If any of the following failure conditions occur, the motor automatically stops and an alarm is signaled:
•Locked rotor
•Low main supply voltage
•Loss of a phase
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For more information about the exhaust fan, see the HP Performance Optimized Datacenter 240e NA Maintenance and Service Guide.
Side view shown
Static pressure control
The control of static pressure is used to be sure that the airflow from the cold aisle of the IT sections across the rack and into the hot aisle of the HP POD 240e NA remains constant. The pressure in the hot aisle is controlled to external ambient pressure, and the IT sections are slightly higher than the external ambient pressure.
The static pressure is controlled to a default parameter of 0.1 in H2O above external ambient pressure in the cold aisle, which cannot be adjusted by a customer.
