
64
Operation Section (D6T LGP (OEM)) WEBM1000
Machine Operation
Modes of Regeneration
Automatic: The engine ECM uses multiple inputs
from the engine and the machine to determine the
best time to perform an automatic regeneration.
Automatic regenerations can take place throughout
the operating cycle of the engine. The regeneration
active indicator will be illuminated when a
regeneration is being performed. Interruptions of the
regeneration are acceptable. If a regeneration is in
progress and needs to be stopped for any reason, it
is permissible to press the disable regeneration
switch or turn off the engine.
Note: Aut
omatic adjustments of engine speed may
be not
iced during automatic regenerations. If a
regeneration is taking place and the engine is taken
to low idle, the engine speed may remain elevated in
order to maintain the regeneration.
Note: I
f an automatic regeneration is started while
the en
gine is at low idle and the machine is taken
back to work, this may stop the regeneration. The
engine ECM will continue to monitor inputs to
determine the best time to restart the regeneration.
Manual:
A manual regeneration is initiated by
pressing th
e force regeneration switch. A manual
regeneration is allowed when the soot level is equal
to or greater than 15%. The machine must be
stationary, the parking brake must be applied, and
the engine must be at low idle in order to perform a
manual regeneration.
Disabled: When
the re
generation system is in
disabled mode, automatic regenerations will not be
performed.
Regeneration System Warning
Indicators
83
Illustration 83
Indicator will illuminate when DPF soot load is
greater than 90%
Regeneration should be performed as soon as
possible
. Machine operation may not allow an
automatic regeneration to take place. A manual
regeneration should be performed as soon as
possible.
Indicator will turn off once DPF regeneration has
st
arted.
Note: In some s
ituations, the DPF indicator may
stay illuminated wh
en the soot load is below 90%.
The illuminated DPF indicator indicates that a
complete regeneration has not been performed. A
complete regeneration is when the soot level is
reduced to 0%. If the DPF indicator stays
illuminated, perform a regeneration without
interruption until the soot level is reduced to 0%. A
complete regeneration will reset the DPF indicator.
84
Illustration 84
If the amount of soot collected in the DPF has
reached a level that a regeneration is required, the
DPF indicator and an action lamp will illuminate.
Stop the machine and apply the parking brake. With
the engine at low idle, initiate a manual regeneration.
Engine power will be slightly derated if the machine
continues to operate.
85
Illustration 85
After a certain period, if no action is taken to
regenerate an action alarm will activate. After 5
minutes with the action alarm active, the engine will
automatically be taken to low idle.
A manual regeneration is required at this time. A
complete r
egeneration will unlock the for
ced low idle
speed. Cycling the engine start switch key will
unlock the forced low idle speed.
Once the engine has been in the forced low idle
str
ate
gy for approximately 10 minutes, regeneration
will be locked out. At this time, a regeneration can
only be done through Caterpillar Electronic
Technician (ET), by an authorized Cat dealer.
After a certain amount of
time, engine will
au
tomatically shut down. Engine can be restarted
but will only run for 30 seconds before shutting down
again.