Cooling Fans; Removing A Cooling Fan - Dell DR4000 Owner's Manual

Cooling Fans

Your system contains four dual-motor cooling fans. These provide cooling
for the processor, PCI cards, and memory modules. Your system also contains
one single-motor fan to provide cooling for the power supplies.
NOTE:
Hot-swap removal or installation of the cooling fans is not supported.
NOTE:
In the event of a problem with a particular fan, the fan number is referenced
by the system's management software, allowing you to easily identify and replace
the proper fan by noting the fan numbers on the fan assembly.

Removing a Cooling Fan

WARNING:
has been powered down. Allow time for the fan to stop spinning before removing
it from the system.
WARNING:
CAUTION:
Many repairs may only be done by a certified service technician.
You should only perform troubleshooting and simple repairs as authorized in
your product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not
covered by your warranty. Read and follow the safety instructions that
came with the product.
1 Turn off the system, including any attached peripherals, and disconnect
the system from its electrical outlet.
2 Open the system. See "Opening the System" on page 60.
3 If applicable, remove the cooling shroud. See "Removing the Cooling
Shroud" on page 62.
4 Disconnect the fan's power cable from the system board. See Figure 3-10.
NOTE:
See "Removing the Storage Controller Card" on page 87.
NOTE:
"Removing an Internal Hard Drive Bay" on page 67.
5 Press the release tab while grasping the ends of the fan and lift the fan
straight up from the fan bracket. See Figure 3-10.
The cooling fan can continue to spin for some time after the system
Do not attempt to operate the system without the cooling fans.
To remove fans 3 and 4, remove the storage controller card first.
To remove fan 5, remove the internal hard drive bay and carrier. See
Installing System Components
71