Komatsu PC138US-11 Operation & Maintenance Manual page 191

OPERATION
• Severe Inducement:
The audible alert sounds in continuous beep.
No gradation of the DEF level gauge lights up.
The DEF level caution lamp (1) lights up in red.
The Action level "L04" is displayed in red (5).
Press F6 to display the "SCR Information" screen.
When all gradations of the DEF level gauge go off, DEF re-
filling amount is approximately 12.6 ℓ to fill up the DEF
tank.
Inducement status (4): "4 Engine power is under heavy de-
ration."
The remaining time (Hour and minute) to the Final Induce-
ment is displayed in the column (6) of the "SCR Informa-
tion" screen. If no DEF is added during the "Severe In-
ducement", Inducement advances to "Final Inducement"
within 1 hour. At "Final Inducement", engine speed is fixed
at low idle.
Engine power can be restored temporarily from power derate. This engine power restoration works only
when the Inducement status is "Severe Inducement" and relieves back temporarily to the power deration of
the "Mild Inducement". The operator can restore engine power through the machine monitor. For the engine
power restoration procedure, refer to the section of "Temporary Restoration from Inducement" in this man-
ual. Once in "Severe Inducement" and it becomes necessary to restore engine power, use the engine pow-
er restoration function to move the machine to a safe place and add DEF.
• Final Inducement:
1 hour after "Severe Inducement" starts, advancing to "Fi-
nal Inducement".
The audible alert sounds in continuous beep.
No gradation of the DEF level gauge light up.
The DEF level caution lamp (1) lights up in red.
Action level "L04" is displayed in red (5).
Press F6 to display the "SCR Information" screen.
Inducement status (4): "5 Engine is running at low idle."
Engine speed is fixed at low idle to disable practical ma-
chine operation.
Add DEF to the DEF tank immediately.
In case the system does not come out of Inducement even
if DEF is added in the tank, contact your Komatsu Distribu-
tor.
INDUCEMENT STRATEGY WHEN ABNORMALITIES ARE DETECTED IN THE
UREA SCR SYSTEM DEVICES
If any abnormality is detected in the DEF quality or in the Urea SCR system, the Inducement strategy is activat-
ed.
WENAM00111
EXPLANATION OF COMPONENTS
3-121