Galaxy A16F-R2422 Installation and Hardware Reference Manual
Introduction
1-12
1.2.9 Cooling
Modules
Figure 1-13: Cooling Module
PN: GAL-9273CFanMod
The A16F-R2422 is equipped with two (2) 1U, dual-fan, redundant, hot-
swappable cooling modules (GAL-9273CFanMod). They are installed in the
cooling module slots located in the lower section of the PSU modules (see
Figure 1-13
). Two (2) LEDs on the rear panel indicates the internal cooling
fans status. Use the latches and handle to insert and remove the cooling
module from the subsystem.
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 components.
Under the following conditions, cooling fans raise their rotation speed to
increase the airflow:
1.
Component Failure: if one cooling fan, a PSU, or a temperature
sensor fails, the remaining cooling fan(s) automatically raises its
rotation speed.
2.
Elevated Temperature: if the temperature breaches the upper
threshold set for any of the interior temperature sensors, the cooling
fans automatically raises its rotation speed.
3.
During the subsystem initialization stage, the cooling fans operate
at the high speed and return to lower speed once the initialization
process is completed and no erroneous condition is detected.
