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 TM 55-1905-242-14
0009 00
Smoke Detectors
Two smoke detectors are mounted in the accommodation module, overhead. The smoke detectors contain a set of normally
open contacts that close when smoke is detected. When closed, the contacts send a signal to the remote alarm panel that
sounds the appropriate alarm.
Fire Detectors
Three fire detectors are mounted in the engine room, overhead. The fire detectors send a signal to the remote alarm panel
when fire is detected, triggering the appropriate alarm.
Horn/Strobe Unit
The horn/strobe unit, mounted in the engine room, alerts engine room personnel to the presence of a fire in the engine room
or smoke in the accommodation module. The unit is controlled by the remote alarm panel. When fire is detected in the
engine room or smoke in the accommodation module, the remote alarm panel causes the horn/strobe unit's horn to sound and
its strobe light to flash.
GENERAL ALARM SYSTEM
General
The general alarm system is used to alert the vessel's crew to general alarm conditions. The system is controlled from the
pilothouse by a rotary switch. When activated, alarm bells sound in the accommodation module and in the engine room.
The system is powered by 24 Vdc from the control and distribution panel in the pilothouse. Additional fuses for the system
are contained in the general alarm junction box located on bulkhead 31, port of centerline, in the engine room. Two alarm bells,
a rotary switch, and a general alarm junction box make up the system.
GENERAL ALARM
JUNCTION BOX
1A
1A
-
1A
1A
+
079/3
079/2
ACCOMMODATION
ENGINE ROOM
BELL
BELL
079/1
BLK
PILOTHOUSE
ROTARY
24VDC
SWITCH
WHT
079
FROM CONTROL AND DISTRIBUTION
PANEL IN PILOTHOUSE
GENERAL ALARM SYSTEM SCHEMATIC
0009 00-2
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