Komatsu D51EX-24, Operation & Maintenance Manual

Page: 166 / 382

• 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.
Inducement status (4): “3 Engine power is under deration.”
Add DEF to the DEF tank immediately.
• Severe Inducement:
The audible alert sounds in continuous beep.
No gradation of the DEF level gauge lights up .
The DEF level caution lamp (1) lights up in red.
The Action level “L04” is displayed in red (5).
Press F6 to display the “SCR Information” screen.
When all gradations of the DEF level gauge go off, DEF re-
filling amount is approximately 20 ℓ to fill up the DEF tank.
EXPLANATION OF COMPONENTS OPERATION
3-110