Komatsu Galeo HD405-7R, Operation & Maintenance Manual

Page: 138 / 361

.
OPERATION
OPERATION
STARTING ENGINE
WARNING
Start the engine only after sitting down in the operator's seat.
Do not attempt to start the engine by short-circuiting the engine starting circuit. Such an act may cause a serious bodily injury
or fire.
Check that there are no persons or obstacles in the surrounding area, then sound the horn and start the engine.
Never use starting aid fluids as they may cause explosions.
Exhaust gas is toxic. When starting the engine in confined spaces, be particularly careful to ensure good ventilation.
NOTICE
Do not accelerate the engine sharply until it is warmed up.
Do not operate the starting motor continuously for more than 20 seconds.
If the engine fails to start, wait for 2 minutes or so, and then try to start again.
When starting the engine, do not depress the accelerator pedal. Even if the accelerator pedal is depressed just after the engine
is started, the engine speed is limited by the turbo protect function. After the turbo protect time, however, the engine speed
rises sharply and the turbocharger may be damaged.
1. Turn the key of starting switch (1) to the ON position.
The preheater pilot lamp lights up, depending on the engine
water temperature, and the engine is preheated. After the
pre-heating time, the preheater pilot lamp goes off.
The pre-heating times are as shown below.
Engine water temperature Preheating time
Above -5
°
C (23
°
F) -
-5
°
C to -20
°
C (23
°
F to -4
°
F) 20 to 40 sec
Below -20
°
C (-4
°
F) 40 sec
REMARK
When the key of the starting switch is turned to the ON position, if the engine water temperature is -5
°
C or higher,
the engine is not pre-heated. At this time, the engine can be started without pre-heating operation.
3 - 89