Advertisement
SYSTEM OPERATION
Automatic Regeneration Switched 'On'
This setting has two automatic stages. 'Passive Regeneration' is where the Catalytic Converter
automatically cleans the Nitrogen Oxide gases and the Soot Particles through chemical reaction.
If 'Passive Regeneration' fails to keep the DPF clean then 'Active Regeneration' is automatically
activated. In this phase, extra fuel is injected into the engine which raises the temperature inside the
DPF thus burning out the Soot Particles and keeping the DPF clean.
With 'Automatic Regeneration' selected the system wil automatically switch between 'Passive' and
'Active' in order to clean the DPF.
'Automatic Regeneration' should be selected at all times apart from in extremely dry weather
conditions when there is a ground fire risk. It is hardly noticeable when the system switches from
'Passive' to 'Active' Regeneration and so the machine can be used normally.
Automatic Regeneration Switched 'Off'
When Regeneration takes place, very high exhaust gas temperatures are emitted from the exhaust
system. If the machine is to be used in very hot countries then this could pose a fire risk which is when
'Automatic Regeneration' should be switched off (Inhibited). In the UK it is very rare to get such
weather conditions and so the 'Automatic Regeneration' Switch should nearly always be selected to
'On'.
Parked Regeneration
If 'Automatic Regeneration' is switched off (inhibit) then soot particles will slowly build up in the DPF. If
these are not cleaned then serious damage can occur to the DPF.
Also, If 'Automatic Regeneration' is selected, but the machine is used under light load or with dirty fuel
and oil, then the DPF can become contaminated even with 'Automatic Regeneration' selected.
In either of these two scenarios a 'Parked Regeneration' is required once the soot levels reach a certain
point as indicated by the 'Regeneration Request Icon' appearing on the LCD display.
Performing a Parked Regeneration
You will need to perform a 'Parked Regeneration' when the soot levels in the DPF reach a specific point
and a flashing 'Regeneration Icon' appears in the LCD display. Once this flashing Icon appears then a
'Parked Regeneration' must be performed as soon as possible. If it is not performed within 1 ½ hours
then a 'Manual Regeneration' will need to be performed by a recommended Kubota Service Agent.
Once the flashing 'Regeneration Icon' appears, drive the machine to a safe area with no fire risk.
Park the machine and apply the parking break.
Reduce the engine speed to idle.
Switch the 'Automatic Regeneration Switch' to the off position (back end down).
Depress the back edge of the 'Parked Regeneration Switch'
'Parked Regeneration' will commence with the throttle setting being automatically controlled.
Do not turn the machine off or use it again until the engine revs have returned to idle and the
'Regeneration icon' has stopped flashing.
Advertisement
