Komatsu WA480-8 Operation & Maintenance Manual page 212

EXPLANATION OF COMPONENTS
"SCR Information" screen message (4): "1 Please inspect
and maintain SCR system."
Move the machine to the safe place and contact your Ko-
matsu Distributor.
If operation continues for 5 hour after "Warning" started
without taking any actions instructed by the Action Level
table, Inducement advances to "Continuous Warning".
• Continuous Warning:
The audible alert sounds in "Intermittent alarm".
The DEF system caution lamp (1) lights up in yellow.
If operation continues for 5 hour after "Warning" started
without taking any actions instructed by the Action Level
table, Inducement advances to "Continuous Warning".
Press the menu switch to display the "SCR Information"
screen.
"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 "Intermittent alarm".
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 the menu switch to display the "SCR Information"
screen.
"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.
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OPERATION