Installing Fixed Configuration Ac Power Cords; Prerequisites - Cisco SRS Series Installation Manual

Cisco crs routers 16-slot line card chassis

Table of Contents

Installing and Removing Power Components

Step 3

For AC, at the AC service circuit breaker box open all associated equipment circuit breakers for shelf(s) to be removed.

Use the lockout and tag procedures per your local practices. Unplug the power cords from the associated power shelves

and remove. See

For DC, at the BDFB or power plant, remove the associated fuses / circuit breakers for shelf(s) to be removed. Use the

lockout and tag procedures per your local practices. Remove DC distribution cables from the rear of the associated power

shelf and tape the bare lugs for protection. See

information.

Step 4

Remove all power modules (three AC power rectifiers in an AC power shelf or three DC PEMs in a DC power shelf)

from the shelf you are removing.

Step 5

Remove the alarm module.

Step 6

Use the screwdriver to loosen the four captive screws (two on each side) on the interior of the power shelf by turning

them counterclockwise.

Step 7

Use the screwdriver to loosen the two lever screws on the front panel of the power shelf by turning them counterclockwise.

Step 8

Pull the lever handles down with both hands and slide the power shelf slowly from the slot in the chassis. After partially

removing the power shelf from the chassis using the handles, grab both side of the power shelf and slide the shelf

completely from the chassis.

Caution

An empty power shelf weighs approximately 36 lb (16.3 kg). Because of the rack-mounted height of the chassis,

you should be especially careful while lifting and removing the power shelf. To prevent injury to your back,

keep your back straight while lifting the shelf and lift the equipment as you stand up. Avoid sudden twists or

lateral moves. It is safer to have two people use a ladder to install or remove the power shelf rather than do it

yourself.

Step 9

Set the power shelf carefully aside.

What to do next

After performing this task, you can install a replacement power shelf

Shelf).