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OPERATION
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.
For the setting procedure, see "PROCEDURE FOR AFTERTREATMENT DEVICES REGENERATION
DISABLE SETTING (3-119)".
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, the aftertreatment devices regeneration pilot lamp (1) stays lit on the machine
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 the caution lamp is displayed at the cen-
ter of the monitor.
The KDPF regeneration is performed automatically. However,
the accumulated soot may not be burnt sufficiently and the fil-
tering function may not be improved under certain operating
conditions.
In that case, KDPF soot accumulation caution lamp (2) lights
up. If this lamp lights up, stop the machine in a safe place and
perform the manual stationary regeneration.
For details of the procedure, see "PROCEDURE FOR MAN-
UAL STATIONARY REGENERATION (3-116)".
Two types of monitor display require the manual stationary re-
generation, depending on the level of urgency.
If the lock lever is in LOCK position, the manual stationary re-
generation may start automatically to protect the KDPF.
NOTICE
Do not stop engine when the aftertreatment devices regeneration is activated.
When stopping the engine, stop the Aftertreatment Devices Regeneration first according to "PROCE-
DURE FOR AFTERTREATMENT DEVICES REGENERATION DISABLE SETTING (3-119)", then keep en-
gine running at low idle for approximately 5 minutes, and stop engine.
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CAUTION
EXPLANATION OF COMPONENTS
3-113
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