Komatsu H75051, Operation & Maintenance Manual

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The inducement strategy progresses in 4 levels, “Warning”,
“Continuous Warning”, “Low level Inducement”, and “Severe In-
ducement”. The Inducement strategy includes visual alert by
the KDPF System caution lamp (1), DEF system caution lamp
(2), and Action Level displayed on the machine monitor (3), au-
dible alert by a buzzer and stepwise engine power derates. En-
gine power deration starts with Action Level “L03 (Warning,
Continuous Warning and Low level Inducement)” and advances
to further deration when “L04 (Severe Inducement)” is dis-
played. Once the system advances to “Severe Inducement”,
the engine power will be further derated. If “L03” is displayed,
move the machine to a safe place and contact your Komatsu
distributor.
The content of the warning can be checked on the “SCR Information” screen of the user menu.
Perform the following procedure.
Press the menu switch on the standard screen to display the
“SCR Information” screen of the user menu.
After a lapse of 3 seconds to stop the machine, “SCR Informa-
tion” screen is displayed.
“SCR Information” screen displays remaining time to the next
Inducement status in the column (6), and information on the
Urea SCR System condition (4), and the current status of In-
ducement (5).
• Warning:
The audible alert sounds in “Intermittent alarm”.
The KDPF 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.
EXPLANATION OF COMPONENTS OPERATION
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