Nortel DMS-100 Series Maintenance Manual page 734

13-86 Routine maintenance procedures
Rectifier replacement Rectifier replacement
OPAC OPAC
(continued) (end)
Rectifier replacement
At the OPAC site
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297-8211-550 Standard 05.01 August 1999
Switch the appropriate circuit breaker, CB1 RECT-1, CB2 RECT-2, or CB3
RECT-3 circuit breaker in the electrical compartment with attached power
pedestal to OFF.
Set the ac and dc breakers on the front face of the rectifier to OFF.
Unscrew the large spring screws in the lower left and right corners of the
rectifier shelf.
Flip back the hinged retaining bar and remove the rectifier.
Mount the replacement rectifier, flip the retaining bar back into place, and screw
the retaining screws.
Switch the appropriate circuit breaker, CB1 RECT-1, CB2 RECT-2, or CB3
RECT-3 rectifier breakers to ON, and reconnect the load to the rectifier.
Set the dc breaker switch on the front of the rectifier to ON.
Set the ac breaker to ON.
Use the Rectifier voltage adjustment procedure to adjust the voltage.
The procedure is complete.