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A retention screw helps secure the PSU within the chassis slot. To
remove the PSU, the retention screw must be removed first. When
installing a PSU, make sure the retention screw is firmly secured.
For the PSU specifications, please refer to Appendix A.
1.3.7
Cooling Modules
PN: IFT-9279CFanMod
The enclosure is equipped with two (2), redundant, dual-fan, cooling
modules. (See Figure 1-14.) The cooling fans within are horizontally
aligned. Two (2) LEDs on the canister indicate the cooling fans'
operating status.
Intelligent Dual Speed Operation
The cooling fans in the cooling module operate with two rotation
speeds. Under normal operating conditions, the cooling fans run at
the low speed, which is sufficient for maintaining efficient airflow
across the components. Under the following conditions, cooling fans
raise their rotation speed to increase the airflow:
1. Component failure: if one cooling fan in a cooling module, a
Major Subsystem Components
Figure 1-14: Cooling Module
PSU, or a temperature sensor fails, the remaining cooling
fan(s) automatically raises its rotation speed.
Chapter 1: Introduction
1-13
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