Komatsu WA380-8 Operation & Maintenance Manual page 91

OPERATION
DEF SYSTEM HIGH TEMPERATURE STOP CAUTION LAMP
DEF system high temperature stop caution lamp alerts when
the times of engine is shut down under the condition of high de-
gree temperature of DEF system exceeds the defined number
of times.
Whenever the caution lamp lights up in yellow, it is necessary
to ask your Komatsu distributor to go off this caution lamp.
When stopping the engine, stop it after running it at low idle for
approximately 5 minutes. For details, see "METHOD FOR
STOPPING ENGINE (3-190)".
When stopping the engine during the aftertreatment devices re-
generation, stop the regeneration first according to "PROCE-
DURE FOR AFTERTREATMENT DEVICES REGENERATION DISABLE SETTING (3-139)", then stop the en-
gine after running it at low idle for approximately 5 minutes.
ENGINE SYSTEM CAUTION LAMP
If the operation is continued while the red lamp is lit, accumulation and combustion of the soot in KDPF
are accelerated, and consequently the temperature of KDPF and exhaust gas can increase high. Stop
the engine immediately.
The engine system caution lamp warns about abnormality in
the engine system.
• When action level "L04" is displayed
The lamp lights up in red. At the same time, the centralized
warning lamp lights up and the alarm buzzer sounds con-
tinuously.
Stop the machine immediately and ask your Komatsu dis-
tributor for inspection and maintenance.
• When action level "L03" is displayed
The lamp lights up in red. At the same time, the centralized
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 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.
ENGINE OIL PRESSURE CAUTION LAMP
Engine oil pressure caution lamp warns about low engine lubri-
cating oil pressure.
If the engine oil pressure drops below the specified value while
the engine is running, the lamp lights up in red and action level
"L03" is displayed. At the same time, the centralized warning
lamp lights up and alarm buzzer sounds intermittently.
Stop the operation, move the machine to a safe place, stop the
engine, then ask your Komatsu distributor for inspection and
maintenance.
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WARNING
EXPLANATION OF COMPONENTS
3-27