User's Manual Part 2

Maintenance 3EM21522AAAA
DTR-0200-SA-SIRIUS Issue 1, March 2008
6-26
STEP PROCEDURE
REMOVAL
1 Open front and rear doors.
a To Open Front Door
Release two locking screws then release two door latches.
a To Open Rear Door
Release one locking screw then release two door latches.
2 Coordinate with NMC to switch repeater to Local operating condition.
3 Switch all repeater PDU circuit breakers to OFF, switching main
breaker last.
4 Switch OFF the commercial power source main breaker which supplies
power to repeater.
5 Hang “DANGER – DO NOT TURN ON – PERSONNEL WORKING” sign at
commercial power source breaker.
6 Remove cabinet roof by removing four wing screws from interior of
cabinet ( Figure 6 - 9 ) and two eye bolts and their plastic spacers from
exterior of roof (
Figure 6 - 10 ).
7 Disconnect and remove power wires from fan terminal blocks
(
Figure 6 - 11 ).
8 Remove retaining hardware from fan mounting studs.
9 Remove fan(s) from mounting studs.