CHAPTER 5
Replacing Components
•
Replacing a Fan Module, page 35
•
Replacing a Power Supply Module, page 36
Replacing a Fan Module
You can replace one of the three fan modules at a time 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.
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.
Caution
Cisco Nexus 9348GC-FXP NX-OS Mode Hardware Installation Guide
35
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