This task covers:
Tool kit, electrician's,
Electrical power to machinery plant
monitoring and alarm system secured
and tagged "Out of Service - Do Not
Operate." TM 55-1905-22-223-10
Warning tags, Item 1, Appendix C
Check exterior of annunciator for loose or missing mounting hardware. Make sure audible alarm is
screwed in securely and lamp on (Engineer Assistance Needed) push button is illuminated. Open
door and check for loose connections on internal wiring, secure as required.
a. Loosen two latch screws (4) to release latches (5).
b. Swing door (2) to the left to gain access to interior.
Tag and disconnect electrical power cables (6) from terminal board TB1.
d. Remove four machine screws (3).
e. Remove annunciator (1) from bulkhead.
Repair at this level of maintenance is by replacement of annunciators (1).
a. Position annunciator (1) on bulkhead and secure with four machine screws (3).
b. Connect electrical power cables (6) at terminal board TB1 and remove tags.