Sun Rack II Power Distribution Units User's Guide

Remove a Compact PDU

1. Shut down and power off the equipment installed in the rack.

   Refer to the system and equipment documentation for the proper shut down and power off procedures.

2. Open the rear door of the rack.
3. Attach a wrist strap to your wrist and to an ESD grounding jack on the rack.

   See Attach an Antistatic Wrist Strap.

4. Switch off the two PDU circuit breakers in the rack.

   Press down on the Off (0) toggle switch to power off the PDU. These circuit breakers at the rear of the rack cabinet. See Circuit Breaker Locations (Standard PDU) or Circuit Breaker Locations (Compact PDU).

5. Disconnect the PDU's main power lead cord from the AC power source.

   See Disconnect the Main Input Power Cords From the Power Source.

6. Disconnect any power jumper cords connected to the PDU from equipment in the rack.

   Note where these jumper cords were attached to the PDU.

7. Disconnect the PDU grounding strap connected to the rear rack rail.

   Disconnect the grounding strap by pressing down on the tab of the strap's quick-release connector and pulling the strap away from the connector. You can optionally remove the grounding strap from the PDU. However, the replacement PDU ships with a new grounding strap.

   
   
8. Using a T-25 Torx wrench key, remove the screw and washer securing the top mounting bracket to the rack's rail.

   Leave the spring nut in the rack rail channel, and save the screw and washer for future use.

   
   
9. Lift the PDU slightly and slide it out of the side mounting bracket.
10. Using a T-25 Torx wrench key, remove the two screws and washers securing the top mounting bracket to the PDU.

    Save the screws, washers, and top mounting bracket for future use.

    
    
11. Consider your next step.
    • If you are replacing the old compact PDU with a new compact PDU, go to Installing Compact PDUs.
    • If you are replacing the old compact PDU with a new standard PDU, go to Installing Standard PDUs.