Komatsu H75051 Operation & Maintenance Manual page 204

EXPLANATION OF COMPONENTS
"SCR Information" screen displays remaining time to the next
Inducement status in the column (5), and information on the
Urea SCR System condition (3), and the current status of In-
ducement (4).
• Warning:
No audible alert.
The DEF system caution lamp (1) lights up in yellow.
Note: Action Level "L01" once shows up in yellow on the
machine monitor (2) for two seconds and goes out.
Press the menu switch to display the "SCR Information"
screen.
"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 power will be derated.
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OPERATION