User Service Guide, Third Edition - HP Integrity rx4640 Server

are in the left and center positions. Fan unit 2 is smaller and only fits into the right-most position
(behind the power supply).
CAUTION: Observe all ESD safety precautions before attempting this procedure. Failure to
follow ESD safety precautions can result in damage to the server.
When the server is running, the top cover must be replaced within two minutes to prevent
components from overheating. If the top metal cover is not replaced within five minutes, the
server automatically shuts down.
NOTE: A hot-swappable device does not require interaction with the operating system before
the device is removed from or installed into the server.
The AC power to the server does not have to be off to remove or replace a hot-swappable chassis
fan.
Removing a Hot-Swappable Chassis Fan Unit
To remove a hot-swappable chassis fan unit, follow these steps:
1. If rack mounted, slide the server out from the rack until it stops. See “Extending the Server
From the Rack” (page 31).
2. Remove the top cover. See “Removing the Top Cover” (page 36).
Removing and Replacing Hot-Swappable Chassis Fans 53