Cisco XR 12410 - Manual (Page 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 (–).