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50
Operation Section
Diesel Particulate Filter Regeneration
Note: If the engine start switch key is cycled or the
"Force Regeneration" switch is pressed for longer
than 2 seconds the system will no longer be disabled.
When the "Force Regeneration" switch is pressed
and "Time to Regen" is less than 8 hours,
regeneration will begin if the machine is at low idle
and is parked.
Note: If the engine start switch key is cycled whilst
the regeneration system is disabled via the "Disable
Regeneration" switch, press and hold the "Disable
Regeneration" switch for 2 seconds to reinitiate.
Modes of Regeneration
Automatic: The Electronic Control Module (ECM)
uses multiple inputs from the engine and the machine
to determine the best time to perform automatic
regeneration. Automatic regenerations can take
place throughout the operating cycle of the engine.
The regeneration active indicator will be illuminated
when regeneration is being performed. Interruptions
of the regeneration are acceptable. If regeneration is
in progress and the regeneration needs to be
stopped, it is permissible to press the "Disable
Regeneration" switch.
Note: Automatic adjustments of engine speed may
be noticed during regenerations. If regeneration is
taking place and the engine is taken to low idle, the
engine speed may remain elevated to maintain the
regeneration.
Note: If the machine returns to work whilst automatic
regeneration is active, the regeneration may be
stopped. The ECM will continue to monitor inputs to
determine the best time to restart the regeneration.
Manual: Manual regeneration is initiated by pressing
the "Force Regeneration" switch. Manual
regeneration will only be allowed if the "Time to
Regen" is less than 8 hours. If the "Force
Regeneration" switch is pressed before "Time to
Regen" is less than 8 hours, then "Regen not
Required" will be displayed. The machine must be
stationary, the parking brake must be applied, and
the engine must be at low idle to perform manual
regeneration.
Disabled: When the regeneration system is in
disabled mode, automatic regenerations will not be
performed. The DPF indicator will illuminate if manual
regeneration is required. The "Time to Regen"
displayed on the performance screen will indicate
that the time until the next regeneration will be
required. However, the DPF indicator may illuminate
with time remaining on the display. When the DPF
indicator illuminates, the operator must perform
manual regeneration.
Regeneration Triggers
Regeneration may be required for the following
reasons:
Soot: The DPF will collect soot produced by the
engine. Automatic regeneration will become active to
reduce soot level.
Start-Up Regeneration: Start-up regeneration is
initiated by the ECM after a cold engine start. This
regeneration is performed to heat the system to a
required temperature for Diesel Exhaust Fluid (DEF)
dosing to begin.
SCR Maintenance: Regeneration is performed to
maintain the SCR system.
ARD Maintenance: Regeneration is performed to
maintain the CRS system.
Regeneration System Warning
Indicators
Illustration 52
The DPF Indicator will illuminate solid when
regeneration is required. Regeneration should be
performed as soon as possible.
Note: In some situations, the DPF indicator may stay
illuminated after regeneration ends. The illuminated
DPF indicator indicates that complete regeneration
has not been performed. Complete regeneration is
when the soot has been depleted or all the criteria for
one of the other regeneration types have been met. If
the DPF indicator stays illuminated, perform,
regeneration without interruption. The DPF indicator
will shut off when regeneration is complete.
M0076814-03
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