7-5
RT765E-2 SERVICE MANUAL
POWER TRAIN
7
Published 9-04-2014, Control # 422-08
GROVE
amber when the diesel particulate filter is getting filled with
soot and needs to be cleaned out.
The indicator will be lit continuously during the early stages
of clogging. If the system continues to clog, the lamp will
begin to flash.
If even more clogging occurs, the engine warning light will
illuminate in addition to the DPF indicator and the engine will
shut down.
The regeneration process can take place in three different
modes:
Passive
: The exhaust is hot enough during normal working
operation to burn off any hydrocarbon (soot) accumulation.
Active
: Active self-regeneration occurs when there is not
sufficient heat in the exhaust to convert all the hydrocarbon
being collected in the DPF. Exhaust temperatures are raised
by injecting a small amount of fuel. The resulting chemical
reaction raises exhaust gas temperatures high enough to
oxidize the hydrocarbon from the filter. This is all done
without any operator intervention.
Manual
: Manual or stationary, regeneration is the same as
active regeneration but takes place while the equipment is
not being operated. It offers the equipment operator the
option, if needed, of performing regeneration outside the
normal duty cycle.
Diesel Particulate Filter Regeneration Switch (Tier 4
Engines Only)
The Engine Diesel Particulate Filter (DPF) switch is located
on the right side of the overhead control panel. This switch is
a three position switch, Inhibit Regen/Permit Regen/Start
Regen. Press this switch to start engine regeneration or to
disable regeneration:
•
Start Regeneration
(7649-10)
•
Inhibit Regeneration
(7649-11)
To regenerate, set the crane parking brake, the crane
transmission must be in neutral and have all pedals
released.
Set up a safe exhaust area around the crane; remove tools,
rags, grease or any debris from the engine exhaust area.
With the engine idling push the DPF Regen Switch to initiate
regeneration.
Within 5 seconds the engine should rev up to 1000 to 1400
rpm. The engine will continue to run at this speed for up to 45
minutes.
Pressing the brake or throttle pedal during regeneration or
activating the Inhibit Regen switch will interrupt the
regeneration process.
Make sure the crane and surrounding area are monitored
during manual regeneration. If any unsafe condition occurs,
shut off the engine immediately.
During this period the sound of the engine may change.
When regeneration is complete the engine will return to its
idle speed.
CAUTION
Engine Shut-down Condition!
When the DPF indicator illuminates or flashes start
regeneration process.
Should the engine light come on with the DPF indicator,
the engine will shut down and an authorized engine
manufacturer service person must be contacted to re-start
the engine.
WARNING
Fire or Burn Hazard!
During the regeneration process the exhaust becomes
very hot. Do not park the vehicle near flammable objects.
Use caution near the exhaust tailpipe during regeneration
as it will become very hot.
WARNING
Fire or Burn Hazard!
During the regeneration process the exhaust becomes
very hot. Do not park the vehicle near flammable objects.
Use caution near the exhaust tailpipe during regeneration
as it will become very hot.
Reference Only
