ARSC SYSTEM CAUTION LAMP
The ARSC system caution lamp warns about abnormality in the
ARSC system.
When an abnormality occurs in ARSC system, the caution
lamp lights up in red, and the action level “L03” is displayed.
At the same time, the centralized warning lamp lights up and
the alarm buzzer sounds intermittently.
Stop the operation, move the machine to a safe place, stop the
engine, then ask your Komatsu distributor for the inspection
and maintenance.
ARSC OVERHEAT NOTICE CAUTION LAMP
CAUTION
Set the travel speed for ARSC to be the travel speed lower than the maximum permissible speed which
is obtained from the brake performance curve.
If the travel speed is set to the speed higher than the maximum permissible speed, the retarder brake
may get damaged by overheating.
The ARSC overheat notice caution lamp warns about the over-
heating of the retarder oil temperature caused by usage of
ARSC.
The ARSC overheat notice caution lamp lights up in yellow
when the retarder oil temperature increased sharply, and the
overheating is estimated to occur in 5 seconds while ARSC is
being used.
Decrease the travel speed which is set in ARSC.
PAYLOAD METER SYSTEM CAUTION LAMP
The payload meter system caution lamp warns about abnor-
mality in the payload meter system.
If the caution lamp lights up in yellow and the action level “L01”
is displayed, always perform the inspection and maintenance
after the operation is finished.
Ask your Komatsu distributor for the inspection and mainte-
nance as needed.
OVERLOAD CAUTION LAMP
The overload caution lamp warns about the overload when the
overload speed limit function is actuated.
The caution lamp lights up in red.
At the same time, the centralized warning lamp lights up and
the alarm buzzer sounds intermittently.
Once the overload is recognized, the control of the overload
speed limit function will not be canceled until the load is dump-
ed.
OPERATION EXPLANATION OF COMPONENTS
3-29
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