Komatsu PC1250-11, Original Instructions Manual

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REMARK
• When the key in starting switch (1) is turned to OFF
(A) position, the engine stops, but the machine's main
power supply is not turned off immediately.
This is because that the power is supplied for the con-
troller to save the operating condition and then finish
the system. The time to keep supplying the power de-
pends on the operating condition.
• Also when the cooling fan is used for a cleaning pur-
pose, the machine's main power supply is not turned
off immediately, even if the key in starting switch (1) is
turned to OFF (A) position.
This is for protection of the hydraulic circuit, and the
power is kept supplied for 7 seconds.
• If the starting switch key (1) is turned to OFF (A) posi-
tion while the engine is still hot, guidance (2) may be
displayed on the machine monitor. This may cause
damage to the devices. To cool down the engine grad-
ually before stopping, run it at low idle for approxi-
mately 5 minutes.
STOP ENGINE IN EMERGENCY
METHOD FOR STOPPING ENGINE IN CAB IN EMERGENCY
(if equipped)
NOTICE
This engine emergency shut down switch is used to stop the engine in emergency.
In normal cases, keep the engine emergency shut down switch to OFF (normal operation) position.
Press the engine emergency shut down switch (S), which is in-
stalled inside the cab, to ON (emergency stop) position (a).
When the engine emergency shut down switch (S) is at ON
(emergency stop) position (a), the machine condition is as fol-
lows.
• If the engine emergency shut down switch (S) is set to ON
(emergency stop) position (a) while the engine is running,
the engine stops and the machine monitor goes out.
• Even if the starting switch key is turned to START position,
the engine does not start.
• Even if the starting switch key is turned to ON position, the
machine monitor displays nothing.
• The indicator lamp (L) in cab lights up in red to show that
the engine emergency shut down switch is actuated. This
indicator lamp (L) lights up regardless of the starting switch
operation.
Restart the engine after stopping according to the following procedure.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-169