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COMSPHERE –48 Vdc Central Office Power Unit
2-8 May 1998 3000-A2-GB41-40
Installing the CO Power Unit
If installing an SDCP in the carrier in which you plan
to install a CO Power Unit, be sure to install the SDCP
ribbon cable that provides power to the SDCP before
installing the CO Power Unit. (For instructions on how to
install the SDCP ribbon cable, see the SDCP Ribbon
Cable Installation section in the COMSPHERE
3000 Series Carrier Installation Manual.)
After installing the CO Power Unit, you can then
install the SDCP. (For instructions on how to install the
SDCP, see Installing the SDCP section later in this
chapter.)
NOTE
Make a ground connection
before installing the CO Power
Unit. Locate the ground
symbol label at the rear of the
CO Power Unit. Remove the
ground screw next to the label.
Attach one end of a ground
strap (minimum 18 AWG) and
securely fasten the ground
screw. Secure the other end of
the ground strap to the nearest
solid frame ground point (see
Step 2).
To install the CO Power Unit:
" Procedure
1. If an air filter is desired, follow the procedure in
the Air Filter and Brackets Installation section
later in this chapter. Then, return to this procedure
and proceed to the next step.
2. At the front of the carrier, place the CO Power
Unit on the flanges at the bottom of the carrier
(see Figure 2-3). Slide the CO Power Unit into
place against the rear rail of the enclosure, guiding
the ground strap through the opening in the
carrier’s backplane.
If an SDCP ribbon cable has been installed, hold
the ribbon cable to the left of the CO Power Unit
when sliding the power unit into place against the
rear rail of the enclosure. Place the ribbon cable
between the power module and the side of the CO
power tray (see Figure 2-3). The SDCP ribbon
cable is connected to the back of the SDCP after
the CO Power Unit is installed.
Connect the ground strap to the nearest solid
frame ground point (e.g., the rails on which the
carrier is mounted). Do not connect the ground
strap to the carrier.