Komatsu HB215LC-3, Operation & Maintenance Manual

Page: 198 / 492

The inducement strategy progresses in 4 levels, “Warning”, “Continuous Warning”, “Low level Inducement” and
“Severe Inducement”.
The DEF level caution lamp (1) on the machine monitor will
light up, audible alert will start, then action level will be dis-
played on the machine monitor, and engine power will be derat-
ed in steps.
In action level “L03 (Low level Inducement)” and “L04 (Severe
Inducement)” engine power will be derated. When action level
“L03” or “L04” is displayed, move the machine to a safe place
and add DEF.
The content of the warning can be checked on the “SCR Infor-
mation” screen of the user menu.
Perform the following procedure.
Press F6 on the standard screen to display the “SCR Informa-
tion” screen of the user menu.
If the lock lever is set to LOCK position or the travel lever and
control levers are in NEUTRAL position for over 3 seconds,
“SCR Information” screen of the user menu will pop up auto-
matically while the Urea SCR system is in Inducement.
“SCR Information” screen displays the DEF level caution lamp
(1), the DEF level gauge (2), information on the Urea SCR Sys-
tem condition (3), and the current status of Inducement (4).
If Inducement starts, stop the machine in a safe place and add
DEF.
Once the audible alert starts, the “buzzer cancel switch” does
not work unless DEF is added.
• Warning:
2 gradations of the DEF level gauge (2) light up in red.
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.
“SCR Information” screen message (4): “1 DEF low level
warning appears.”
Add DEF to the DEF tank immediately.
EXPLANATION OF COMPONENTS OPERATION
3-126