Komatsu WA200-8 Operation & Maintenance Manual page 89

OPERATION EXPLANATION OF COMPONENTS
DEF SYSTEM CAUTION LAMP
DEF system caution lamp alerts when abnormality in the sys-
tem are detected.
If the caution lamp lights up, stop the work, and move the ma-
chine to a safe place, then contact your Komatsu distributor.
Fault conditions that result in activation of the Inducement strat-
egy for engine derates to prompt to maintain or repair the emis-
sion control system.
Lighting in red
With Action level "L04", Inducement status is "Severe Induce-
ment". Engine power is under heavy deration.
With Action level "L03", Inducement status is "Low level Inducement". Engine power is under deration.
Lighting in yellow
With Action level "L01", Inducement status is "Warning" or "Continuous Warning".
When "Continuous Warning", If no maintenance, advancing to the next Inducement status. Engine power will be
derated.
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 just after the aftertreatment devices
regeneration has been disabled, run the engine at low idle for
approximately 5 minutes, then stop it.
When disabling the aftertreatment devices regeneration during
the regeneration of the aftertreatment devices, see "PROCE-
DURE FOR AFTERTREATMENT DEVICES REGENERATION DISABLE SETTING".
ENGINE SYSTEM CAUTION LAMP
The engine system caution lamp warns about abnormality in
the engine system.
When action level "L04" is displayed
The caution lamp lights up in red. At the same time, the central-
ized warning lamp lights up and the alarm buzzer sounds con-
tinuously.
Immediately stop the machine and ask your Komatsu distribu-
tor for inspection and maintenance.
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 intermittently.
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.
3-25