STAGES OF REGENERATION
Level 0
Whilst the mower is being operated normally with the ‘Automatic Regeneration Switch’ turned on,
‘Passive Regeneration’ is keeping the DPF clean by using a chemical reaction in the Catalytic
Converter.
Level 1
When ‘Passive Regeneration’ alone is no longer able to keep the DPF clean, ‘Level 1’ is reach which
is when the system automatically switches to ‘Active Regeneration’. During ‘Active Regeneration’
extra fuel is injected into the engine which will substantially increase the temperature inside the
DPF, thus burning away the soot build up and cleaning the DPF. An ‘Automatic Regeneration Icon’
will be displayed in the LCD screen to show that ‘Automatic Regeneration’ is taking place.
Level 2
If Soot continues to build up, despite the ‘Automatic Regeneration’ being switched on, then ‘level 2’
will be reached. At this stage the ‘Regeneration Icon’ will flash indicating that a ‘Parked
Regeneration’ is required in order to clean the DPF. This must be performed as soon as possible and
definitely within 1 ½ hours of the Icon starting to flash.
Level 3
If the ‘Parked Regeneration’ request from ‘Level 2’ is ignored and the machine continues to be
operated then it quickly reaches Lvel 3. When level 3 is reached ‘Excessive PM3’ is displayed on the
LCD display, the Yellow LED light is illuminated and the engine is restricted to 50% power. A ‘Parked
Regeneration’ must be performed immediately and the machine should no longer be used. If it is
continued to be used then a Service Call by a Kubota Service Engineer will be required.
Level 4
If the request from level 3 is ignored and the machine continues to be used at 50% engine power
then ‘Level 4’ will quickly be reached. At this stage it is no longer possible for the Operator to
perform a ‘Parked Regeneration’ in order to clean the DPF and a Kubota Service Engineer will need
to be called in order to perform a ‘Manual Regeneration’. Note: This ‘Manual Regeneration’ must
be performed immediately if serious damage to major components is to be avoided.
Level 5
If Level 4 is ignored and the machine continues to be used then Level 5 will be reached. If level 5 is
reached then the expensive DPF will need to be replaced by a Kubota Service Engineer.
Note:
If a DPF is maintained correctly it should have a service life of about 3,000 hours.
