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Replacing Components
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Replacing a Fan Module
You can replace a fan module while the switch is operating so long as you perform the replacement within
one minute. If you cannot perform the replacement within one minute, leave the original fan module in the
chassis to maintain the designed airflow until you have the replacement fan module on hand and can perform
the replacement.
Caution
Removing a Fan Module
Caution
On the fan module that you are removing, press the two sides of the fan module handle together, and pull on the handles
enough to unseat it from its connectors.
Replacing a Fan Module, on page 29
Replacing a Power Supply Module, on page 30
If you are replacing a module during operations, be sure that the replacement fan module has the correct
direction of airflow, which means that it has the same airflow direction as the other modules in the chassis.
Also, be sure that the airflow direction takes in air from a cold aisle and exhausts to a hot aisle. Otherwise,
the switch can overheat and shutdown.
If you are changing the airflow direction of all the modules in the chassis, you must shutdown the switch
before replacing all the fan and power supply modules with modules using the other airflow direction. During
operations, all of the modules must have the same direction of airflow.
The fans might still be turning when you remove the fan assembly from the chassis. Keep fingers, screwdrivers,
and other objects away from the openings in the fan assembly's housing.
Cisco Nexus 9348GC-FX3 NX-OS Mode Switch Hardware Installation Guide
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