Komatsu D85EX-18 Operation & Maintenance Manual page 157

OPERATION
DUST INDICATOR
This device notifies the operator of clogging of air cleaner ele-
ment.
For the cleaning method of the element, see "METHOD FOR
CHECKING, CLEANING AND REPLACING AIR CLEANER
(4-15)".
HANDLE Komatsu Diesel Particulate Filter (KDPF)
• Exhaust gas temperature may increase higher than the previous models during aftertreatment devi-
ces 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 (3-109)".
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 KDPF, a purification
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 aftertreat-
ment devices regeneration pilot lamp (1) stays lit on the ma-
chine 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 machine 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.
k k
CAUTION
EXPLANATION OF COMPONENTS
3-103