Komatsu PC138US-11 Operation & Maintenance Manual page 96

EXPLANATION OF COMPONENTS OPERATION
AFTERTREATMENT DEVICE SYSTEM CAUTION LAMP
This warns about defects of the aftertreatment devices system.
When action level "L04" appears on screen.
The caution lamp comes on in red and the alarm buzzer oper-
ates continuously.
Stop the machine immediately and ask your Komatsu distribu-
tor for inspection and maintenance.
When action level "L03" appears on screen.
The caution lamp comes on in red and the alarm buzzer oper-
ates intermittently.
Stop the work and move the machine to a safe area. Ask your Komatsu distributor for inspection and mainte-
nance.
When action level "L01" appears on screen.
The caution lamp comes on in yellow.
It is not necessary to stop the machine immediately.
However, it is recommended to inspect the machine for maintenance after you finish operations.
Ask your Komatsu distributor for inspection and maintenance as necessary.
REGENERATION PERFORMANCE CAUTION LAMP
This warns about the deterioration of regeneration performance
of aftertreatment devices.
When action level "L03" appears on screen.
The caution lamp comes on in red and the alarm buzzer oper-
ates continuously.
Move the machine to a safe area and activate manual station-
ary regeneration.
When action level "L01" appears on screen.
The caution lamp comes on in yellow.
Move the machine to a safe area and activate manual stationary regeneration after the end of work.
DEF LEVEL CAUTION LAMP
DEF level caution lamp alerts when DEF tank level becomes
low.
Whenever the caution lamp lights up in red, immediately add
DEF.
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", DEF tank level is too low. Inducement
status is "Final Inducement". Engine speed is fixed at low idle.
With Action level "L04", DEF tank level is too low. Inducement status is "Severe Inducement". Engine power is
under heavy deration.
With Action level "L03", DEF tank level is low. Inducement status is "Mild Inducement". Engine power is under
deration.
With No Action level display. DEF tank level is lower. Inducement status is "Escalated Warning". Need to add
DEF immediately to avoid advancing to the next Inducement status.
With No Action level display. Warning starts. Inducement status is "Warning". Need to add DEF immediately.
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