Komatsu H75051 Operation & Maintenance Manual page 191

OPERATION
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.
Two types of monitor display require the manual stationary re-
generation, depending on the level of urgency.
When the directional lever is turned to NEUTRAL position (N)
and the parking brake switch is turned to the "ON" position, the
manual stationary regeneration may start automatically to pro-
tect 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", then keep engine run-
ning at low idle for approximately 5 minutes, and stop engine.
When the Action level "L03" lights up in red, and the KDPF soot accumulation caution lamp (2) lights up
in red, engine power deration is activated. To restore engine power, it is necessary to perform "PROCE-
DURE FOR MANUAL STATIONARY REGENERATION".
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
• 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 auto-
matic regeneration may be performed and the manual sta-
tionary 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.
EXPLANATION OF COMPONENTS
3-125