9 MAINTENANCE
55
9.10 DIESEL PARTICULATE FILTER ______________________________________________
During the operation of the mower, the level of particle material will increase in the Diesel Particulate Filter (DPF)
system. The periodic Regen of the DPF system is needed to remove particle material. During an Active or Parked
Regen, the engine will use more fuel. The DPF system operates in one of four states.
Passive Regen State - The engine operates in the Passive Regen state during normal engine operation. The exhaust
temperature can be more than 572° F (300° C).
Inhibit Regen State - When the Regen Inhibit switch is in the INHIBIT position, engine can not enter the Active or
Parked Regen states. Inhibit Regen does not prevent the Passive Regen. If the fuel tank is near empty, move the
Regen Inhibit switch to the INHIBIT position until the fuel tank is filled.
Active Regen State - When the level of particle material reach a certain point, the engine will enter Active Regen state.
Operation of the mower is not changed. The exhaust temperature can be more than 1150° F (625° C) during Active
Regen. The high exhaust temperatures during Active Regen will illuminate the High Exhaust Temperature light.
Parked Regen State - When a Parked Regen is needed, the Regen Request light will flash. Park the mower on
concrete or gravel to prevent damage to the turf. Engage the parking brake, but do not stop the engine. Press and
release the front part of the Inhibit
Regen switch to start the Parked Regen. During the Parked Regen, the Regen
Request light will illuminate. The high exhaust temperatures during Parked Regen will illuminate the High-Exhaust
Temperature light. Do not disengage the parking brake, stop the engine or move the mower during the Parked Regen.
A Regen cycle that is not completed will move the engine through six different levels of control.
Level 0 - Normal operation of mower with Passive Regen. When particles reach the Active Regen level, the engine
controller will change to Level 1. When the engine controller is at Level 0, the Active and Parked Regen is disabled.
Level 1 - Engine will enter Active Regen state unless Inhibit Regen switch is in the INHIBIT position. Normal Active
Regen is completed in approximately 20 minutes. If the particle material level does not decrease to the Passive Regen
level in 30 minutes (1800 seconds), the engine controller will change to Level 2. When the engine controller is at Level
1, the Parked Regen is disabled
Level 2 - Regen Request light will flash. Engine will enter Active Regen state unless the Inhibit Regen switch is in the
INHIBIT Position. When the mower is parked and the parking brake is engaged, the Parked Regen state is available. If
the engine is operated at Level 2 without a Regen for approximately 1 to 1-1/2 hours, the engine controller will change
to Level 3.
Level 3 - Regen Request light will flash and the check engine light is illuminated. The engine power output is
decreased and Active Regen is disabled. When the mower is parked and the parking brake is engaged, the Parked
Regen state is available. If the engine is operated at Level 3 without a Regen for approximately 1 to 1-1/2 hours, the
engine controller will change to Level 4.
Level 4 - High Exhaust Temperature Light will flash and the check engine light is illuminated. The engine power output
is decreased significantly. Active and Parked Regen is disabled. The Kubota Diagmaster tool is needed to start a
Regen. If the engine is operated at level 4 without a Regen for approximately 1 to 1-1/2 hours, the engine controller will
change to Level 5.
WARNING
During Active or Parked Regen, the temperature of the exhaust components can be more than 1150° F (625° C). To
prevent burns, do not touch a hot exhaust system and do not stand or reach into exhaust gas area from exhaust
pipe outlet. To prevent fires, make sure the engine area is kept clean and the grass clippings are not near exhaust
components.
Make sure the exhaust gas from the exhaust pipe is not blocked and there is enough space between the exhaust
pipe and objects. Park the mower on concrete or gravel during Parked Regen. During Active or Parked Regen
exhaust gas from the exhaust pipe can cause turf damage or fire.
!
Summary of Contents for R311T-T4F
Page 13: ...SPECIFICATIONS 4 12 A K B J H C F D G E L ...
Page 83: ...NOTES 13 82 13Notes ...
