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Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide
OL-6256-17
Chapter 2 Installing and Removing Power Components
How to Install or Remove Fixed Configuration Power Components
Steps
To install a DC PEM or AC rectifier, 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 front (PLIM) side of the chassis or a bare metal surface on the chassis.
Step 2 Make sure that the power switch is in the off position.
Step 3 Grasp the handle on the top of the module firmly, and lift it partway up.
Step 4 Using two hands to support and guide the DC PEM or AC rectifier, slide it into the chassis power bay
on the front (PLIM) side of the chassis until the connector on the back of the module meets the connector
on the backplane of the PDU.
Caution An AC rectifier weighs 36 lbs (13.44 kg); a DC PEM weighs 38 lbs (17.24 kg). You should
use both hands when handling a DC PEM or AC rectifier.
Step 5 Press the DC PEM or AC rectifier in firmly to seat it against the PDU.
Caution To prevent damage to the PDU-to-module connections, do not use excessive force when
seating a DC PEM or AC rectifier to its PDU.
Step 6 Tighten the two captive screws on the face of the DC PEM or AC rectifier to seat it snugly against the
PDU.
Step 7 Push the power tab at the bottom front of the module in to the on position.
What to Do Next
After performing this task, you may connect the PDU to the power source (see the “DC Power Systems”
section on page 2-6 and the “AC Power Systems” section on page 2-11) and power up the chassis (see
the “How to Install or Remove Fixed Configuration Power Components” section on page 2-13).
Removing a DC PEM or AC rectifier
This section describes how to remove a DC PEM or AC rectifier from the Cisco CRS 8-slot line card
chassis in a fixed configuration power system. For information on the difference between the power
types, see the “DC Power Systems” section on page 2-6 and the “AC Power Systems” section on
page 2-11.
The DC PEM or AC rectifier is located on the front of the chassis, and mates with the PDU that is
installed on the back of the chassis (see the “Installing a PDU” section on page 2-15 for information).
Although there are differences among the DC PEMs or AC rectifiers (AC Wye, AC Delta, and DC), they
are removed in the same manner. (Figure 2-13 shows an AC Wye rectifier for reference.)