User's Manual Part 2

Maintenance 3EM21522AAAA
DTR-0200-SA-SIRIUS Issue 1, March 2008
6-36
STEP PROCEDURE
REMOVAL
1 Open front and rear doors.
a To Open Front Door
Release two locking screws then release two door latches.
b To Open Rear Door
Release one locking screw then release two door latches.
2 Coordinate with NMC and switch repeater to Local operating condition.
3 Switch OFF all repeater PDU circuit breakers switching main breaker
last.
4 Switch OFF commercial power source main breaker supplying power to
repeater.
5 Hang “DANGER – DO NOT TURN ON – PERSONNEL WORKING” sign at
commercial power source breaker.
6 Remove five filter assembly retaining screws from inside of rear door
(Figure 6 - 16).
7 Remove air filter assembly (Filter and Louver Plate/Storm Hood) from
rear door (see
Figure 6 - 17 and Figure 6 - 18 ).
Figure 6 - 16 Filter Assembly Retaining Screws (Inside of Rear Door)