LeeBoy 8616B - DPF Regeneration (REGEN)

DPF Regeneration (REGEN)
DPF regeneration is the term given to the cleaning
process where the exhaust temperature is raised in
an attempt to safely burn off any soot and undesired
combustion gas captured in the Diesel Particulate
Filter (DPF) in the exhaust system. When the DPF
lter reaches a soot saturation level bewteen 25 - 45
percent, the onboard engine ECU (Engine Control Unit)
will activate a regeneration cycle.
To reduce the amount of particulate
matter and maximize efciency, use API-CJ4 (or
ACEA-E9 European equivalent) engine oil.
During normal operation, the DPF is cleaned
automatically. Under certain conditions, the operator
may have to instruct the control system to perform the
cleaning process.
The DPF level icon is shown on the engine screen.
(Figure 4-8) The DPF icon indicates the level of soot
build-up on a scale of Level 0 - 5 and changes color.
Regeneration will occur automatically at Level 1 - 2.
DPF
Level
Figure 4-6. DPF Level Icon in Engine Screen
At Level 3, a screen will appear notifying the operator
that a manual regeneration is required. (Figure 4-9)
Figure 4-7. DPF Warning Screen
It is important to perform a parked, manual
regeneration BEFORE the engine reaches as high as
Level 4. If the DPF reaches Level 4 - 5, non-warranty
factory assistance from the engine manufacturer is
required.
NOTE: See Section 5 Troubleshooting Chart on Page
5-33 for a complete list of fault codes.
The engine speed will increase during regeneration
and there may be a noticeable sound difference.
Once regeneration is complete, the engine will return
to normal idle speed and a green screen will appear
notifying operator the process is complete. Press the
“X” button to clear this screen.
Once the DPF cycle has been activated, it is important
not to shut off the engine as the regeneration cycle will
fail and could possibly damage the engine. Therefore, it
is important to allow the regeneration process to nish.
If the regeneration cycle fails, the ECU may attempt a
second regeneration depending upon how blocked the
lter has become. If the system does not allow a second
regeneration, this means the lter is blocked more than
80 percent and needs to be cleaned or replaced.
There are several factors that affect how often your DPF
regenerates and the life expectancy of your DPF lter:
• Grade of engine oil.
• Grade of diesel fuel.
• Use of additives.
• Mileage.
• Wear of other components.
DO NOT attempt to operate the unit,
change engine RPM or move from Park/Neutral
during the regeneration process.
4
Operation
LeeBoy 8616B Conveyor Paver 4-7