Cisco Nexus 93108TC-EX Hardware Install Manual

Cisco Nexus 93108TC-EX Hardware Install Manual

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Replacing Modules
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
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.
Removing a Fan Module
Warning
Statement 263 Fan Warning
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.
Step 1
On the fan module that you are removing, press the two sides of the fan module handle next to where it connects to the
fan module and pull on the handles enough to unseat it from its connectors.
Step 2
Holding the handle, pull the module out of the chassis.
Replacing a Fan Module, on page 1
Replacing a Power Supply Module, on page 2
Replacing Modules
1

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Summary of Contents for Cisco Nexus 93108TC-EX

  • Page 1 Replacing Modules • Replacing a Fan Module, on page 1 • Replacing a Power Supply Module, on page 2 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.
  • Page 2: Installing A Fan Module

    Replacing Modules Installing a Fan Module Do not touch the electrical connectors on the back side of the module and prevent anything else from coming Caution into contact with and damaging the connectors. Installing a Fan Module Before you begin •...
  • Page 3: Removing An Hvac/Hvdc Power Supply

    Replacing Modules Removing an HVAC/HVDC Power Supply • Ensure that the chassis is grounded. For grounding instructions, see Grounding the Chassis. Step 1 Pull the power cord out from the power receptacle on the power supply to be removed and verify that the LED turns off.
  • Page 4: Removing A Dc Power Supply

    Replacing Modules Removing a DC Power Supply Removing a DC Power Supply You can remove one power supply while the other one provides power to the switch. To disconnect the power supply from its power cables, you must shut off the power from the power source and then either disconnect a connector for the power cables or release each of three cables from the power supply (requires a standard screw driver).
  • Page 5: Installing An Hvac/Hvdc Power Supply

    Replacing Modules Installing an HVAC/HVDC Power Supply • An AC power source must be within reach of the power cable that will be used with the replacement power supply. If you are using n+n power redundancy, there must be a separate power source for each power supply installed in the chassis.
  • Page 6: Installing A Dc Power Supply

    Replacing Modules Installing a DC Power Supply • If you are using n+n power redundancy, there must be a separate power source for each power supply installed in the chassis (power sources must be of the same type—do not mix AC and DC power sources for the same switch).
  • Page 7 Replacing Modules Wiring a 48 V DC Electrical Connector Block • There must be an earth ground connection to the chassis that you are installing the replacement module. Typically, the chassis is grounded by its metal-to-metal connection to a grounded rack. If you need to ground this chassis by another means, see Grounding the Chassis.
  • Page 8 Replacing Modules Wiring a 48 V DC Electrical Connector Block Before you begin You must turn off the circuit breaker for the DC power cables that you are connecting to prevent electrocution. Step 1 Verify that the circuit breaker for the power feed to the replacement power supply is turned off. Step 2 Remove the DC power connector block from the power supply by doing the following: a) Push the orange plastic button on the top of the connector block inward toward the power supply.

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