Komatsu PC490-11, Installation And Instruction Manual

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“SCR Information” screen message (4): “2 Without treat-
ment, engine power will be derated.”
Move the machine to the safe place and contact your Ko-
matsu Distributor.
The duration of “Continuous Warning” is 5 hours. The re-
maining time (Hours and Minutes) to “Low level Induce-
ment” is displayed in the column (5) of the “SCR Informa-
tion” screen.
In “Low level Inducement”, engine performance will be de-
rated.
• Low level Inducement:
The audible alert sounds in short and sharp beeps.
The DEF system caution lamp (1) lights up in red.
Action level “L03” lights up in red at action level display (2)
and stays on.
Press F6 on to display the “SCR Information” screen on
the user menu screen when the Standard screen is on.
“SCR Information” screen message (4): “3 Engine power is
under deration.”
Due to the engine power deration, capability of the ma-
chine will be limited.
Move the machine to the safe place and contact your Ko-
matsu Distributor.
The duration of “Low level Inducement” is 10 hours. The
remaining time (Hours and Minutes) to “Severe Induce-
ment” is displayed in the column (5) of the “SCR Informa-
tion” screen.
In “Severe Inducement”, engine power will be derated fur-
ther.
• Severe Inducement:
The audible alert sounds in continuous beep.
The DEF system caution lamp (1) lights up in red.
Action level “L04” lights up in red (2).
Press F6 to display the “SCR Information” screen when
the Standard screen is on.
“SCR Information” screen message (4): “4 Engine power is
under heavy deration.”
Due to the further deration of engine power, capability the
machine will be limited further.
“Severe Inducement” is the final status of Inducement.
Unless all the “SCR system” abnormalities are corrected,
engine performance will be kept derated.
EXPLANATION OF COMPONENTS OPERATION
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