Komatsu PC490-11, Installation And Instruction Manual

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HANDLE Komatsu Diesel Particulate Filter (KDPF)
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CAUTION
• Exhaust gas temperature may increase during 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 while regenera-
tion of aftertreatment devices.
For the setting procedure, see “PROCEDURE FOR AFTERTREATMENT DEVICES REGENERATION
DISABLE SETTING (3-122)”.
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 aftertreatment devices regeneration, the aftertreatment devices regeneration pilot lamp (1) stays lit
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 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 (3-119)”.
If fan reverse operation is performed while the aftertreatment
devices regeneration pilot lamp and the KDPF soot accumula-
tion caution lamp are lit, the accumulated soot may not be
burnt sufficiently and the filtering function may not be improved.
When these monitors are lit, wait until they go out and then per-
form fan reverse operation.
For the operation to reverse the fan rotation, see “MACHINE SETTINGS (3-68)”.
Two types of monitor display require the manual stationary regeneration, depending on the level of urgency.
OPERATION EXPLANATION OF COMPONENTS
3-115