System Fans; Replacing Chassis Fans - Supero AS-4021M-32R User Manual

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UPER ERVER 4021M-32R User's Manual
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System Fans

Three 8-cm chassis fans (located in the center of the chassis) provide cooling airfl ow
while two 8-cm exhaust fans expel hot air from the chassis. The chassis is also
fi tted with an air shroud to concentrate the fl ow of cool air over the areas of highest
generated heat. The fans should all be connected to headers on the serverboard
(see Chapter 5). Each power supply module also has a fan.
Fan Failure
Under normal operation, all three chassis fans, both exhaust fans and the power
supply fans run continuously. The chassis fans and the exhaust fans are hot-swap-
pable and can be replaced without powering down the system.

Replacing Chassis Fans

1. Identifying the failed fan
To locate and replace a failed chassis fan, begin by removing the top/left chassis
cover (see Chapter 2 for details on removing the cover). Locate the fan that has
stopped working.
2. Removing a hot-plug fan housing
Depress the locking tab on the failed fan: on a chassis fan, puch the tab on the side
of the housing inward, on the exhaust fan push down on the colored tab. With the
tab depressed, pull the unit straight out (see Figure 6-3). The wiring for these fans
has been designed to detach automatically.
3. Installing a new system fan
Replace the failed fan with an identical one (see Appendix for part numbers). Install
it in the same position and orientation as the one you removed; it should click into
place when fully inserted. Check that the fan is working then replace the top/left
side chassis panel.
Removing the air shroud
Under most circumstances you will not need to remove the air shroud to perform
any service on the system. However, if you wish to temporarily remove it (the air
shroud should always be in place when the system is operating), please follow
this procedure.
Begin by depressing the tabs at the front and rear of the shroud to unlock it, then
lift it up and out of the chassis (see Figure 6-4). To reinstall, simply position the
air shroud in its proper place and push it in until you hear it click.
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