Komatsu WA380-8, Operation & Maintenance Manual

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If soot accumulated in the KDPF exceed the defined level
without performing “PROCEDURE FOR MANUAL STA-
TIONARY REGENERATION”, the Action level “L04” lights
up in red. Stop the machine immediately and ask your Ko-
matsu distributor.
REMARK
• If KDPF soot accumulation caution lamp (2) lights up in
red, engine power is derated to protect the engine and
KDPF system.
• Soot accumulation level (3) can be checked with the “Af-
tertreatment Devices Regeneration” screen. Press the
menu switch on the standard screen to display “Aftertreat-
ment Devices Regeneration” screen of the user menu.
• Since the soot in the filter of KDPF can be burnt by the
high-performance catalyst and high-temperature exhaust
heat, the soot accumulation quantity may decrease even if
the regeneration is not performed, depending on the oper-
ating condition.
• Even when the soot accumulation level is low, the automatic regeneration may be performed and the man-
ual stationary regeneration may be requested to protect the system.
In particular, if engine is kept running with no load, the regeneration frequency may increase, but this is not
a failure.
• Even just after the regeneration is completed, the soot accumulation level may not be “0”. This is caused by
the accumulated noncombustible material in the exhaust gas and is not a failure.
• Since noncombustible matter which cannot be burnt by the regeneration is accumulated in the filter of
KDPF, the filter needs to be cleaned or replaced at regular intervals. For details, see “METHOD FOR
CLEANING KDPF (4-74)”.
• The engine speed or engine sound may change during or after the regeneration. This is caused by the con-
trol for better regeneration and this is not a failure.
• The smell of the exhaust gas is different from that of the conventional diesel engine because of the exhaust
gas filtering function.
• White smoke may be discharged for a short time just after the engine is started or during the regeneration
in the cold season, but this is not a failure.
• Komatsu recommends using Komatsu genuine engine oil for KDPF.
If engine oil other than Komatsu genuine oil for KDPF is used, it may shorten cleaning interval of KDPF
filters, adversely affect the engine such as deteriorated oil may reduce lubricating function, and it may
cause failure.
In addition, the regeneration interval may be shortened and the fuel consumption may increase.
For details of the genuine oil, see “RECOMMENDED FUEL, COOLANT, AND LUBRICANT (7-4)”.
OPERATION EXPLANATION OF COMPONENTS
3-135