Komatsu PC490-11, Installation And Instruction Manual

Page: 201 / 492

• Warning:
2 gradations of the DEF level gauge light up in the red
range.
The DEF level caution lamp (1) lights up in red.
No audible alert.
No Action level is displayed.
Press F6 to display the “SCR Information” screen.
Inducement status (4): “1 DEF low level warning appears.”
Add DEF to the DEF tank immediately.
• Continuous Warning:
The audible alert sounds in repetition of “three beeps and
a pause”.
2 gradations of the DEF level gauge light up in the red
range.
DEF level caution lamp (1) lights up in red.
No Action level is displayed.
Press F6 to display the “SCR Information” screen.
Inducement status (4): “2 Without treatment, engine power
will be derated.”
Add DEF to the DEF tank immediately.
• Low level Inducement:
The audible alert sounds in short and sharp beeps.
1 gradation of the DEF level gauge light up in red.
The DEF level caution lamp (1) lights up in red.
Action Level “L03” is displayed in red (5).
Press F6 to display the “SCR Information” screen.
OPERATION EXPLANATION OF COMPONENTS
3-129