Doosan DX225LC, Manual, Page: 19 / 136

Electrical System SP000935
Page 18
ENGINE STOP
When starter switch (5) is turned "ON" the engine controller (8)
is activated. The engine controller monitors and controls the
engine including the injector solenoid (9). It controls the fuel
deliver rate and the injection timing for each cylinder.
NOTE: There is an individual injector solenoid (9) for each of
the six cylinders. Only one solenoid is shown in
Figure 7.
When starter switch (5) is turned "OFF," the engine controller
stops suppling power to the injector solenoid (9). This stops fuel
from being injected into the engine cylinder, thus stopping the
engine.
In the event that the engine can be shut down using the starter
switch (5), an emergency stop switch (10) is provided to shut
down engine. To activate the emergency stop switch, move it to
the "I" (EMERGENCY STOP) position.
The emergency stop switch (10) is in its "O" (OFF) position
during normal operation. The switch must be moved and held in
the "I" (EMERGENCY STOP) position until the engine stops.
When released it will automatically move back to the "O" (OFF)
position.
FG001344
O I
Figure 6
ENGINE EMERGENCY STOP
SWITCH