Cisco XR 12410 Uživatelský manuál stáhnout pdf (Strana 205)

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Cisco XR 12410 and Cisco XR 12810 Router Installation Guide

OL-17441-01

Chapter 5 Maintaining the Router

Removing and Replacing AC and DC Power Subsystem Components

Step 7 Install the rear chassis components (Figure 5-19):

a. Install the new DC PDU and tighten the (4) screws to secure it to the chassis.

b. Replace the rear panel and tighten the (16) captive screws.

Note The rear panel has a lip that fits over the top of the chassis. Be sure to fit

the bottom of the rear panel above the DC horizontal trough.

c. Replace the DC horizontal trough and tighten the (6) captive screws.

Caution If you have installed an upgraded PDU to accommodate 2800 W PEM,

do not use the old DC horizontal trough. Be sure to install the

replacement DC horizontal trough which has the correct voltage and

warning labels attached to it.

Step 8 Reconnect the W DC power cables in the following order (Figure 5-20):

a. Ground cables first.

b. Positive cables next.

c. Negative cable last.

d. Repeat steps a, b, and c for the other PDU.

e. Go to Step 9.

Warning

To prevent injury and damage to the equipment, always attach the ground and

source DC power cable lugs to the power shelf terminals in the following order:

(1)

ground to ground, (2) positive (+) to positive (+), (3) negative (–) to

negative (–).

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Cisco XR 12410 Uživatelský manuál Strana 205