Toro Groundsmaster 4500-D Series Service Manual page 80

Regeneration (continued)
Types of regeneration that are performed manually (while the machine is stationary)
Type
Parked
Recovery
Soot Accumulation
Ash Accumulation
Yanmar Diesel Engine: General Information
Conditions
Occurs when exhaust back pressure in
the DPF increases due to continued soot
buildup.
May occur because the InfoCenter was set
to inhibit reset regeneration and machine
operation continued, adding more soot to
the DPF after a reset regeneration was
requested.
May be caused by prolonged operation at
low engine speed, low engine load, or the
use of incorrect fuel or engine oil.
Can be initiated when prompted by the
engine ECU or manually after a minimum
of 50 hours of engine operation.
Occurs when exhaust back pressure in
the DPF increases due to soot buildup
reaching a critical level.
May occur because parked regeneration
requests were ignored and machine
operation continued, adding more soot to
the DPF after a parked regeneration was
requested.
Can only be initiated when prompted by
the engine ECU.
Refer to the traction unit Operator's Manual for additional DPF regeneration
information, and instructions for using the InfoCenter DPF Regeneration Menus.
If the types of regeneration that are performed automatically (while the machine
is operating) are bypassed or not allowed to complete before shutting off the
engine, soot will continue to accumulate in the soot filter. When enough soot
accumulates, the engine ECU will generate an engine fault to prompt a parked or
recovery regeneration. In addition to an engine fault appearing on the InfoCenter,
the engine output power will be reduced.
Ash is a result of the regeneration processes. The lighter ash is discharged
through the exhaust system, while the heavier ash collects in the soot filter.
When enough ash accumulates in the soot filter, the engine ECU will generate an
engine fault to prompt servicing the DPF. In addition to an engine fault appearing
on the InfoCenter, the engine output power and speed will be reduced.
Description
The InfoCenter displays the stationary
regeneration icon.
Manually initiate a parked regeneration as soon
as possible. A parked regeneration will take
approximately 30 to 60 minutes and should not be
started with less than 1/4 tank of fuel. The machine
must remain stationary (cannot be operated) during
the entire parked regeneration process.
The InfoCenter displays the stationary
regeneration icon.
Manually initiate a recovery regeneration as soon
as possible. A recovery regeneration will take
approximately 3 hours and should not be started with
less than 1/2 tank of fuel. The machine must remain
stationary (cannot be operated) during the entire
recovery regeneration process.
Page 4–8 Groundsmaster ® 4500-D/4700-D
19245SL Rev A