Diesel Particulate Filter Regeneration - Toro Groundsmaster 5900 Operator's Manual

machine into or out of a building), you will not be
able raise all the cutting units at once. Instead,
you can only raise 1 cutting unit at a time.
2. Push the deck-lift switches rearward to raise
the decks.
Lowering the Decks
1. Using the handle, unhook the latches holding
the decks in the raised position.
2. While sitting in the operator's seat, turn the
ignition key to the R
Figure 31
1. Handle
3. Push the deck-lift switches forward to lower the
decks.
position (Figure 31).
UN
2. Latch
Diesel Particulate Filter
Regeneration
The diesel particulate filter (DPF) is part of the exhaust
system. The diesel-oxidation catalyst of the DPF
reduces harmful gasses and the soot filter removes
soot from the engine exhaust.
The DPF regeneration process uses heat from the
engine exhaust to incinerate the soot accumulated on
the soot filter, converting the soot to ash, and clears
the channels of the soot filter so that filtered engine
exhaust flows out the DPF.
The engine computer monitors the accumulation of
soot by measuring the back pressure in the DPF. If
the back pressure is too high, soot is not incinerating
in the soot filter through normal engine operation. To
keep the DPF clear of soot, remember the following:
•
Passive regeneration occurs continuously while
the engine is running—run the engine at full
engine speed when possible to promote DPF
regeneration.
•
If the back pressure in the DPF is too high or a
reset regeneration has not occurred for 100 hours,
the engine computer signals you through the
g032698
InfoCenter when reset regeneration is running.
•
Allow the reset regeneration process to complete
before shutting off the engine.
Operate and maintain your machine with the function
of the DPF in mind. Engine load at high idle (full
throttle) engine speed generally produces adequate
exhaust temperature for DPF regeneration.
Important:
Minimize the amount of time that you
idle the engine or operate the engine at low-engine
speed to help reduce the accumulation of soot in
the soot filter.
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