Installing and Removing a Fan Module
Youcan hot swap a fan module (N20-FAN5) without causing an electrical hazard or damage to the system.
However,you can only remove one fan module while the system is operating. Removing more than one fan
modulecould cause overheating.
Whena fan isremoved, louvers inside the chassisprevent recirculation of air into the system or loss of
cooling.However, you should not leave the chassis for extended periods of time without all fan modules
inplace.
Note

Installing a Fan Module

Procedure
Step 1 Holdthe fan module with the spring latch at the top of themodule.
Step 2 Pushthe fan moduleinto the chassis until it seats properly and the spring latch snaps into place.
Step 3 Listenfor the fans if the chassis is powered on. You should immediately hear it operating. If you do not hear
it,ensure that the fan module is inserted completely in the chassis and the faceplate is flush with the outside
surfaceof the chassis.
Step 4 Verifythat the LED behavior is as expected. See LED Locations, on page 24 and Interpreting LEDs, on
page25.
Figure 41: Positioning a Fan Module (N20-FAN5) in the Cisco UCS Server Chassis
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Installing and Removing Components
Installing and Removing a Fan Module