Komatsu H75051 Operation & Maintenance Manual page 190

EXPLANATION OF COMPONENTS
HANDLE Komatsu Diesel Particulate Filter (KDPF)
• Exhaust gas temperature may increase during the aftertreatment devices regeneration and the high
temperature may last after the completion of regeneration.
Avoid getting near the exhaust pipe outlet and around the aftertreatment devices to prevent being
burnt.
Also, keep combustible materials away from the exhaust pipe outlet and around the aftertreatment
devices to prevent a fire.
• When there are thatched houses, dry leaves or pieces of paper near the job site, set the system to
the regeneration disable to prevent fire hazards due to highly heated exhaust gas during the after-
treatment devices regeneration.
• Do not leave the operator's seat during the aftertreatment devices regeneration.
KDPF is a device to capture soot in the exhaust gas to purify
the exhaust gas.
If soot is accumulated to a certain level in the filter, a purifica-
tion process to burn the soot is performed automatically to
keep the filtering performance of KDPF high.
This purification process is called the "regeneration".
If operations which lower the purification function of KDPF con-
tinues for long hours, the regeneration is performed to protect
the KDPF system, regardless of the quantity of the accumulat-
ed soot.
During the KDPF regeneration, aftertreatment devices regeneration pilot lamp (1) lights up on the monitor.
REMARK
• Even if aftertreatment devices regeneration pilot lamp (1)
lights up, the machine does not need to be stopped and
the work can be continued, unless when the KDPF soot
accumulation caution lamp (2) lights up.
• Accumulation amount of soot can be checked by soot ac-
cumulation level (3) on the "Aftertreatment Devices Regen-
eration" screen.
Operate the menu switch on the standard screen to dis-
play the "Aftertreatment Devices Regeneration" screen.
• Automatic regeneration against accumulation of soot starts
when the soot accumulation level increases "3" or above,
and stops a while after the soot accumulation level de-
creases to "0".
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CAUTION
OPERATION