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Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Installation Guide
OL-6256-08
Chapter 2 Installing and Removing Power Components
How to Install or Remove the Power Components
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AC Delta PDU Cisco product number CRS-8-LCC-PDU-ACD=
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DC PDU Cisco product number CRS-8-LCC-PDU-DC=
Steps
To install a PDU, follow these 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 Make sure that the PDU is unplugged.
Step 3 Grasp the PDU by the side and set it carefully into place in a PDU slot on the rear (MSC) side of the
chassis. Be sure to lift the PDU over the lip on the edge of the chassis, and align the guide pins on the
chassis with the guide holes on the PDU.
Caution Do not lift the PDU by the power cord—doing so can damage the PDU or the cord.
Step 4 If needed, put the second PDU into place in the other PDU slot on the chassis.
Note The PDU holding plate bolts to both PDUs and the side of the interior of the chassis.
Step 5 Install the PDU holding plate.
a. Slide the holding plate into place on top of the PDU, using the guide bolts on the side of the chassis
to place it correctly.
b. Use the socket wrench to bolt the holding plate to the top of the PDUs with the eight 10-mm bolts
(four for each PDU).
c. Use the socket wrench to bolt the holding plate to the interior of the side of the chassis with the four
8-mm bolts (two for each side)
Step 6 Use the socket wrench to install the 8-mm center holding bolt and the 10-mm nut.
What to Do Next
After performing this task, install the power modules (see the “Installing a Power Module” section on
page 2-13), and replace any cosmetic covers.
Removing a PDU
This section describes how to remove a PDU in the Cisco CRS-1 8-slot line card chassis. For information
on the difference between the power types, see the
“DC Power Systems” section on page 2-4 and the “AC
Power Systems” section on page 2-8. For complete information on regulatory compliance and safety, see
Regulatory Compliance and Safety Information for the Cisco CRS-1 Carrier Routing System.
The PDU is located at the back of the chassis. Although there are differences among the different PDU
types (AC Wye, AC Delta, and DC), they are installed in the same manner (see
Figure 2-7, which shows
an AC Wye PDU for reference).