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 TM 55-1905-219-14-2
2-119. HALON SYSTEM TESTING.
a. The Halon system is to be tested by shipboard personnel and a qualified Fire/Safety Prevention Team. Refer to
nameplate on cylinder for details on maintenance of the system.
(1) The shipboard personnel will test the following items:
Pressure operated switchbox, lights, horns, and exhaust fans
Halon fire alarm panel and horn
Pressure gauge and Halon cylinder
Discharge indicator
(2) The Fire/Safety Prevention Team will test the following items:
Pneumatic control heads
Actuators and system tubing
any and all items deemed necessary and appropriate to assure that the Halon system will function
properly when needed.
b. The shipboard personnel will test the following components of the Halon system.
(1) Pressure operated switchbox, lights, horns, and exhaust.
(a) Pull up on stem of pressure switchbox (1) in aft and forward engine rooms to make electrical contact with
amber lights, horns, and exhaust fan circuitry.
(b) f amber lights come on, horns sound, and exhaust fans shut down, all of these components and the
switchbox pass the test.
(2) Fire alarm panel.
If the light indicators (2) on the panel located in the pilothouse come on and the audible alarm switch (3)
functions to activate the pilothouse horn, then the panel and horn pass the test.
(3) Reset pressure switch on pressure switchbox.
(4) Reset audible alarm switch on fire alarm panel to ON or OFF, as required.
(5) Pressure gauge and Halon cylinder.
Visibly inspect pressure gauge, comparing readings with gauge calibration table values. If readings are
within the values shown, then the pressure gauge and Halon cylinder pass the test.
2-512.2
Change 2
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