Komatsu WA380-8, Operation & Maintenance Manual, Page: 216 / 432

• Warning:
The audible alert sounds in “Intermittent alarm”.
The Engine system caution lamp (1) lights up in red.
The action level “L03” lights up in red at action level dis-
play (3).
Press the menu switch to display the “SCR Information”
screen.
“SCR Information” screen message (5): “1 Please inspect
and maintain SCR system.”
Engine power is derated.
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 Engine system caution lamp (1) lights up in red.
The DEF system caution lamp (2) lights up in yellow.
The action level “L03” lights up in red at action level dis-
play (3).
Press the menu switch to display the “SCR Information”
screen.
“SCR Information” screen message (5): “2 Without treat-
ment, engine power will be derated.”
Move the machine to the safe place and contact your Ko-
matsu Distributor.
The duration time of “Continuous Warning” is 5 hour. The
remaining time (Minutes) till the next Inducement status of
“Low level Inducement” is displayed in the column (6) of
“SCR Information” screen.
In “Low level Inducement”, engine power will be derated.
• Low level Inducement:
The audible alert sounds in “Intermittent alarm”.
The Engine system caution lamp (1) lights up in red.
DEF system caution lamp (2) lights up in red.
The action level “L03” lights up in red at action level dis-
play (3).
Press the menu switch to display the “SCR Information”
screen.
EXPLANATION OF COMPONENTS OPERATION
3-152