Watchcall/Assistance Needed System

TM 55-1915-200-10

ERC when the PHC-78 not in direct control of the main

pressing the manual assistance needed button on the

master panel. When energized, the assistance needed

engines. The system consists of a selector switch

indicating lamps and bells mounted both at the ERC and

relay enables indications and audible devices in the

engineering mess and the recreation room. The relay is

at the PHC. The EOT bells ring at both locations if the

deenergized by depressing the acknowledge (ACK)

selector switch at the ERC does not match the position

pushbutton on the ERC or releasing the manual

of the selector switch at the PHC or if the PHC EOT

assistance needed pushbutton on the master panel.

selector switch is positioned from one direction to

another direction without the shaft coming to a stop. If

1-10.6.9. Attendance Monitor System. The attendance

the positions of the EOT selector switches at both

locations are in the same position, the EOT bells are

monitor system (also known as the dead man alarm)

silent.

enables the PHC operator to verify that the ERC

operator is attentive. The system is activated by the

1-10.6.8. Watchcall/Assistance Needed System. The

PHC operator and is timer controlled. Every 30 minutes

the ERC operator is given two minutes to respond to an

watchcall/assistance needed system provides remote

indication and audible call at the ERC. If this is done

alarms in various vessel locations which alert personnel

the timer restarts. If it is not done in the two minutes

in the event the ERC operator does not respond to an

provided, an alarm sounds at the PHC.

alarm within a specific time. The system also provides

the means to call an engineer, in a stateroom, to the

1-10.6.10. Marine Fire and Smoke Detection System.

engineer's turn on watch.

The marine fire and smoke detection system (FO-2)

1-10.6.8.1. Watchcall. The watchcall system notifies an

sounds an alarm when fire or smoke is detected. The

engineer of his turn on watch. The system is activated

system consists of a main fire panel, smoke and heat

by pressing an engineering call button at the master

detectors, manual fire alarm stations, and associated

panel. Depressing the button energizes a relay in the

alarms. The smoke and heat detectors are arranged in

master panel which enables an indication and an

12 zones throughout the ship. When a fire or smoke

audible device at both the ERC and the selected state

condition is detected, the associated detector sends an

room panel. Pressing the cancel button at either

alarm signal via a junction box to the main fire panel.

location will deenergize the relay which inhibits the

The alarm panel displays indications of the alarm by

indications and audible devices.

zone, sounds alarm bells at the pilot house and engine

room, enables audible and strobe alarms on the

1-10.6.8.2. Assistance Needed. The assistance needed

intrusion fire alarm panels, and enables a visual alarm

strobe light in the engine room. If main generator power

system notifies offwatch engineers that the ERC

drops below 95 volts, the system is transferred from

operator needs assistance. The system is activated

main generator power to emergency generator power.

when the ERC alarm system detects an alarm condition

and energizes an audible relay. The energized audible

1-10.6.11.

Intrusion/Fire Alarm System.

The

relay enables a 30 second delay timer in the master

panel. If the ERC alarm is not acknowledged before the

intrusion/fire alarm system indicates unauthorized entry

timer expires, the assistance needed relay in the master

into

the

secure

radio

room

and

arms

panel energizes. The relay may also be energized by

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