Komatsu HB365LC-3, Operation & Maintenance Manual

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REMARK
For more information about the Inducement strategy, and Inducement status concerning engine power deration,
see “HANDLE UREA SCR SYSTEM WARNING (3-128)”.
DEF SYSTEM CAUTION LAMP
DEF system caution lamp alerts when abnormality in the sys-
tem are detected.
Whenever the caution lamp lights up in yellow or in red, take
necessary actions by instructions.
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.
When lightning in red
With Action level “L04”, Inducement status is “Severe Induce-
ment”. Engine power is under heavy deration. Hybrid system
power is also under deration. This results in low swing motor power.
With Action level “L03”, Inducement status is “Low level Inducement”. Engine power is under deration. Hybrid
system power is also under deration. This results in low swing motor power.
When lightning 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.
REMARK
• For more information about the Inducement strategy, and Inducement status concerning engine power de-
ration, see “HANDLE UREA SCR SYSTEM WARNING (3-128)”.
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.
When Lightning in yellow
The action level “L01” is displayed.
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 regeneration, stop the regeneration first according
to “PROCEDURE FOR AFTERTREATMENT DEVICES REGENERATION DISABLE SETTING (3-124)”, then
stop the engine after running it at low idle for approximately 5 minutes.
ENGINE SYSTEM CAUTION LAMP
k k
CAUTION
If the operation is continued while the red caution 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.
EXPLANATION OF COMPONENTS OPERATION
3-26