High Level Alarm "Fire; Engine Shut-Down Through Fuel Shut-Off Solenoid Valve; Actuation Modes Of The Fire Suppression System - Komatsu 15045 Operation & Maintenance Manual

Hydraulic mining shovel
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OPERATION
3.18 FIRE DETECTION AND SUPPRESSION SYSTEM

3.18.1 HIGH LEVEL ALARM "FIRE"

The high level alarm (8), illlust. Z 21619 will sound approximately
15 seconds before discharge of the fire suppression system in
case of automatic actuation of the system. Act according to the
circumstances and the applying safety regulations. Evacuate area
to lessen risk of injury from flames.
3.18.2 ENGINE SHUT-DOWN THROUGH FUEL SHUT-OFF SOLENOID
VALVE
The fuel shut-off solenoid valve for the engine is actuated through
pressure switch (9), illust. Z 21619.
When the fire detection system detects a fire, the valve will be
closed shutting-off fuel supply to the engine (Shut-down of the
engine).

3.18.3 ACTUATION MODES OF THE FIRE SUPPRESSION SYSTEM

MANUAL ACTUATION
Via strike button (2) in operator's cab or strike button of switches
(6) on radiator door and (7) at the rear power house door.
WARNING
Manual actuation will result in immediate system discharge
which may obscure vision. Make certain the Shovel is
stopped safely before manually actuating the system. Man-
ual actuation will bypass all auxiliary shutdown and alarm
functions.
NOTICE
For manual actuation via switches (4, 6 or 7), pull ring (3) and
strike button (2).
AUTOMATIC ACTUATION
Via detection wires routed through the engine - and hydraulic
pump compartments.
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