TM 5-1940-322-24
0147 00
AUTOMATIC FIRE EXTINGUISHER ALARM REPLACEMENT (Contd)
CAUTION
Ensure cap is supported during removal. Failure to comply may
result in damage to wires.
REMOVAL
1.
Disconnect slave (6) from receptacle (7).
2.
Turn cap (10) counterclockwise and disconnect from alarm body (14).
3.
Disconnect ground wire (8) from terminal (9).
4.
Disconnect blue positive wire (12) from terminal (9) and remove cap (10) from alarm body (14).
5.
Remove two tiedown straps (5) from wires (1), (2), (3), (8), (12), (13), (21), (22), (24), and (25). Discard
tiedown straps (5).
6.
Disconnect ground wire (24) from ground wire (25).
7.
Disconnect positive wire (2) from positive wire (3).
8.
Remove cables (13) and (21) from alarm body (14).
9.
Disconnect wires (1) and (22) from bridge rectifier (23).
10.
Disconnect wires (18) and (19) from relay (20).
11.
Remove two locknuts (15), washers (16), screws (4), and alarm body (14) from bracket (17). Discard
locknuts (15).
12.
Inspect O-ring (11) on cap (10) for damage. Replace O-ring (11) if damaged.
INSTALLATION
1.
Install alarm body (14) on bracket (17) with two screws (4), washers (16), and new locknuts (15).
2.
Install cables (13) and (21) through holes in alarm body (14).
3.
Connect wires (18) and (19) to relay (20).
4.
Connect wires (1) and (22) to bridge rectifier (23).
5.
Connect positive wire (2) to positive wire (3).
6.
Connect ground wire (24) to ground wire (25).
7.
Secure wires (1), (2), (3), (8), (12), (13), (21), (22), (24), and (25) together with new tiedown straps (5).
CAUTION
Ensure cap is supported during installation. Failure to comply may
result in damage to wires.
8.
Connect blue positive wire (12) to terminal (9) in cap (10).
9.
Connect ground wire (8) to terminal (9) in cap (10).
10.
Install cap (10) on alarm body (14) by turning counterclockwise.
11.
Connect slave (6) to receptacle (7).
12.
13.
Close battery hatch (TM 5-1940-322-10).
0147 00-2