Toro 74060 Software Manual page 6

Figure 5
1. Start of Auto Regen
When the engine ECU determines that an auto
regeneration is needed, the alarm chirps and the
module displays the Start of Auto Regen screen
with a 60-second bar graph timer
Once the timer expires, the auto regeneration
process begins.
Note:
No action is required and you can
continue to use the machine during the auto
regeneration process.
CAUTION
During the auto regeneration process,
the exhaust temperatures rise and could
ignite flammable materials.
Use caution if you operate the machine
around flammable materials.
If an auto regeneration is needed but operating
conditions do not allow the process to begin,
the module prompts you to increase the engine
speed and/or load.
Figure 6
1. Increase RPM/Load
When the process begins, the screen changes
to indicate that the auto regeneration process
is active.
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1. Auto Regen Active
(Figure 5).
1. Regen Interrupted
3.
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Figure 7
If the regeneration is interrupted, the following
screen displays:
Figure 8
Note:
If you shut off the engine during the
regeneration process, the process resumes
when you start the engine and it reaches the
required temperature level.
Stationary Regeneration
Over time, soot accumulates in the DPF and a
passive or auto regeneration is not sufficient
to unclog the filter. During the stationary
regeneration, the engine ECU controls engine
speed, load, and air/fuel mixture to perform a
controlled burn of the particulate collected in the
DPF.
If a stationary regeneration is required, it
may indicate that the engine has been idling
excessively or not run under a sufficient load. If
multiple successive regenerations are required,
it may indicate that the DPF will require service
soon, that an engine problem exists (e.g.,
incorrect engine fuel or oil) or that a DPF
pressure sensor is failing.
Important:
A stationary regeneration can
be initiated by the engine ECU or by you,
the user. You can monitor the DPF soot
percentage on the Engine-Off Screen or in
the Maintenance and Service Menu. If the
DPF Soot percentage is high, you may elect
to initiate a manual stationary regeneration
on the DPF Soot Percentage screen in the
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