Toro Groundsmaster 5900 Operator's Manual page 40

DPF Soot Accumulation
•
Over time, the diesel particulate filter accumulates
soot in the soot filter. The computer for the engine
monitors the soot level in the DPF.
•
When enough soot accumulates, the computer
informs you that it is time to regenerate the DPF.
•
DPF regeneration is a process that heats the DPF
to convert the soot to ash.
•
In addition to the warning messages, the computer
reduces the power produced by the engine at
different soot-accumulation levels.
DPF Ash Accumulation
•
The lighter ash is discharged through the exhaust
system; the heavier ash collects in the soot filter.
•
Ash is a residue of the regeneration process. Over
time, the diesel particulate filter accumulates ash
that does not discharge with the engine exhaust.
•
The computer for the engine calculates the amount
of ash accumulated in the DPF.
•
When enough ash accumulates, the engine
computer sends information to the InfoCenter
in the form of an engine fault to indicate the
accumulation of ash in the DPF.
•
The fault messages indicate that it is time to
service the DPF.
•
In addition to the warnings, the computer reduces
the power produced by the engine at different
ash-accumulation levels.
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