7.12
Alarm Test/Trouble Test
A single switch with a center-off position is provided on the front panel to test all of the individual line detecting
module functions for both alarm and trouble.
a.
Raising the switch to the upper position simulates the presence of smoke in all line detector modules.
b.
Operation of alarm test results in all line detector modules going into the alarm condition as well as the
production of a common alarm output from the main panel (common alarm output is the illumination of
common alarm lamp plus the energizing of the smoke alarm bells in the wheelhouse and engine room).
Common and line alarm lamps are illuminated on the repeater panel (when used).
c.
Simulated alarms should be cancelled by operation of reset switch. It is recommended that test conditions
not be left in effect for a longer period of time than necessary to ensure proper annunciation.
d.
Lowering of the test switch to the trouble position simulates a trouble condition in all line detector modules.
e.
Operation of the trouble test switch, while held in the test position, results in the display of the amber trouble
signal on the front of each line detector module as well as the common trouble signal on the electronic cabinet
drawer front (common trouble signal represents illumination of the common trouble lamp plus the energizing
of the trouble buzzer at the main detector cabinet and the common signal device at the remote repeater
cabinet respectively).
f.
Trouble signals do not latch. Therefore, the trouble indication generated by trouble tests will persist only as
long as the switch is depressed.
7.13
Bell Circuits
Two bell circuits are provided; one for the bell in the engine room and one for the bell in the wheelhouse, as
required by U.S. Coast Guard regulations. Both bell circuits are continually supervised by the detector cabinet
for presence of the bells in the circuit, the wiring of the bells, circuit continuity, and both ground fault and short
circuit conditions. The bell circuit faults produce the illumination of the alarm bell trouble LED indicator and the
common trouble lamp. A common trouble condition operates the trouble buzzer at
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