Quantcast REPAIR - TM-55-1905-223-24-18-20077

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TM 55-1905-223-24-18-2
WARNING
Be sure that electrical power to pressure operated switch is turned OFF and tagged
"Out of Service - Do Not Operate" before proceeding with removal procedures.
(1) Disconnect pipe (7) from cylinder at union (8).
(2) Remove four screws (6) securing cover assembly (2) to housing (1).
(3) Remove cover assembly.
(4) Remove four screws (5) securing electrical wire leads to switch (3).
(5) Tag and separate wiring from switch.
(6) Remove two screws (4) securing switch in housing body.
(7) Remove switch.
REPAIR
Repair of the halon subsystem consists of replacing globe valve (36), time delay
(9), pressure operated switch (3), nonmetallic hose assemblies (15, 24), release
lever (26), electro-pneumatic actuator (18), halon nozzle (1, Figure 3-5), and fire
foam nozzles (3, Figure 3-6).
REPLACEMENT
a. Replace Pressure Operated Switch.
(1) Position switch (3, Figure 3-4) in housing body (1) with mounting screw holes aligned.
(2) Secure switch with two screws (4).
(3) Position electrical wire leads on switch.
(4) Secure wire leads to switch with four screws (5).
(5) Remove tags from wiring.
(6) Position cover assembly (2) on housing with switch and mounting screw holes aligned.
(7) Secure cover assembly with four screws (6).
(8) Connect pipe (7) to cylinder at union (8).
b. Replace Time Delay (60 Seconds).
(1) Position time delay (9) and install mounting hardware on bracket (10).
3-55


 


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