Cisco Systems OL-6256-17 manual Removing DC PDU Wiring

Chapter 2 Installing and Removing Power Components

How to Install or Remove Fixed Configuration Power Components

Removing DC PDU Wiring

This section describes how to remove the wiring from the fixed configuration DC PDU. For more detailed information on chassis DC power systems, see the “DC Power Systems” section on page 2-6.

Caution When removing DC wiring from the fixed configuration DC PDU be sure to remove the ground cable last.

Prerequisites

Before performing this task, power down and remove DC PEMs in the shelf you want to disconnect.

Note Before removing wiring from the power shelf, make sure that the power cord is not plugged into the facility power.

Required Tools and Equipment

You need the following tools to perform this task:

•ESD-preventive wrist strap

•3/8-in. ratchet wrench with 10-mm socket

Steps

To remove the wiring from the DC PDU, perform the following steps:

Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the rear (MSC) side of the chassis or a bare metal surface on the chassis.

Step 2 Remove the upper plastic terminal block safety cover (leave the lower safety cover in place; as shown in Figure 2-11). Using a standard Phillips screwdriver, remove the four screws holding the upper plastic safety cover to the wiring terminal block.

Step 3 Using the 10-mm socket wrench, remove the three positive and three negative cables from the terminal block.

Step 4 Using the 10-mm socket wrench, remove the ground cable from the ground cable terminal.

Note When a cable is removed from the rear of the fixed configuration DC power shelf, we recommend that it should be wrapped with standard black electrical tape.

Step 5 Reattach the upper plastic safety cover with a Phillips screwdriver. Insert and tighten the four screws holding the cover to the wiring terminal block.

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