AIR CLEANER CLOGGING CAUTION LAMP
Air cleaner clogging caution lamp warns about clogging of the
air cleaner.
If the caution lamp lights up in yellow and action level “L01” is
displayed, stop the engine, then check and clean the air clean-
er.
See “METHOD FOR CHECKING, CLEANING AND REPLAC-
ING AIR CLEANER (4-14)”.
FAN CONTROL SYSTEM CAUTION LAMP
The fan control system caution lamp warns about abnormality
in the fan control system.
When action level “L03” is displayed
The caution lamp lights up in red. At the same time, the central-
ized warning lamp lights up and alarm buzzer sounds intermit-
tently.
Stop the operation, move the machine to a safe place, stop the
engine, then ask your Komatsu distributor for inspection and
maintenance.
When action level “L01” is displayed
The caution lamp lights up in yellow.
When you finish the operation, always perform the inspection and maintenance.
Ask your Komatsu distributor for the inspection and maintenance as needed.
FAN-REVERSE OPERATION CAUTION LAMP
The wrong operation in fan reverse mode caution lamp warns
about misoperation while the fan is rotating in reverse.
It lights up in red when the directional lever or directional selec-
tor switch is turned to any position other than NEUTRAL posi-
tion (N) while the fan is rotating in reverse.
At the same time, the centralized warning lamp lights up and
alarm buzzer sounds intermittently.
Set the directional lever and directional selector switch to NEU-
TRAL position (N) while the fan is rotating in reverse.
AIR CONDITIONER SYSTEM CAUTION LAMP
Air conditioner system caution lamp warns about abnormality in
air conditioner system.
If the caution lamp lights up in yellow and action level “L01” is
displayed, always perform inspection and maintenance after
the operation is finished.
Ask your Komatsu distributor for the inspection and mainte-
nance as needed.
EXPLANATION OF COMPONENTS OPERATION
3-30
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