Komatsu H75051 Operation & Maintenance Manual page 211

OPERATION
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 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 "Low level Inducement". The operator can restore engine power
through the machine monitor. For the engine power restoration procedure, refer to the section of "Tempora-
ry Restoration from Inducement" in this manual. If Inducement advances to "Severe Inducement" and it be-
comes necessary to restore engine power, use the engine power restoration function to move the machine
to a safe place and contact your Komatsu distributor.
Temporary Restoration from Inducement
Temporary Restoration from Inducement is the one of the Inducement strategies allowed to be included in Urea
SCR systems.
In case the Urea SCR system advances to "Severe Inducement", engine power is derated heavily. This may
cause difficulties of moving the machine to a safe place for adding DEF or troubleshooting and correcting abnor-
malities of the Urea SCR system. For temporary remedies from these difficulties the operator can restore engine
power for a short time to the deration of "Low level Inducement" through the machine monitor. Note that "Tempo-
rary Restoration from Inducement" does not regain full engine power.
"Temporary Restoration from Inducement" can be activated only when the Urea SCR system is in "Severe In-
ducement". The maximum duration is limited to 30 minutes in each restoration operation, and only 3 operations
are allowed unless all the abnormalities of the Urea SCR system are corrected.
If the system advances to "Severe Inducement", utilize "Temporary Restoration from Inducement" immediately.
Procedure to activate "Temporary Restoration from Inducement".
1.
Press the menu switch (1) to display the "SCR Information"
screen when the Standard screen is on, only when the
Urea SCR system is in "Severe Inducement".
2.
Press the enter switch (2) to display the menu windows
popping up in the bottom half of the "SCR Information".
The menu windows popping up in the bottom half of the
"SCR Information" screen alternate every 15 seconds as
shown in the graphics A and B.
EXPLANATION OF COMPONENTS
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