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Equipment replacement
553-2601-500A
Standard 2.0
December 1994
8
With three black jumper wires, connect the four battery packs in series
(
). Connect the large lug on the black wire to the terminal of
the first battery pack. Connect the small lug on the wire to the
negative (–) terminal on the second battery pack. Install the remaining
wires between the second and third, and the third and fourth battery
packs. Ensure that connections to the battery terminals are secure
but do not over-tighten (maximum torque not to exceed 3.95 N.m
(35 in./lb.)).
9
Connect the black wire inside the QBL24 battery unit to the remaining
positive (+) battery terminal, and the red wire to the remaining negative
(–) battery terminal.
10
Reinstall cover on QBL24 battery unit.
11
Set the AC BRKR breaker located on the front –48 V rectifier to ON.
12
Set the DC BRKR breaker on the front of the QBL24 battery units
to ON.
13
Set the CAB INP breaker on the front of the QUX19 or QUX21 unit
to ON.
Procedure 6
Expansion QBL24 Battery Unit replacement
1
Set the AC BRKR breaker on the front of the –48 V rectifier to OFF in
the cabinet connected to QBL24 battery unit being replaced.
2
Set the DC BRKR breaker on both QBL24 battery units serving the
cabinet to OFF.
CAUTION
Service in the cabinet is interrupted when replacing the expansion
QBL24 battery unit.
