DIESEL PARTICULATE FILTER (DPF) MUFFLER OPERATING THE ENGINE 4.1 PM warning level and required procedures In the regeneration inhibit mode, the buzzer starts sounding and the indicator display changes in response to the PM level in order to prompt the operator to perform the required procedure listed in the following table. IMPORTANT : Once the regeneration level has been reached, immediately perform the required procedure for regeneration. Interrupting the regeneration cycle or continuing operation while ignoring the warning signs may cause DPF and engine damage. M5091,M5111 41 Regeneration inhibit mode DPF system status Required procedure PM warning level: 1 Buzzer:
Not sounding The regeneration indicator starts flashing. A specific level of PM has built up in the DPF muffler. Continue with the operation as it is. At PM warning levels range from 1 to 2-2, it is also possible to change DPF inhibit switch to auto regeneration mode, then perform the regeneration. PM warning level: 2-1 Buzzer: Sounding every 5 sec- onds The regeneration indicator starts flashing. The parked regeneration indicator starts flashing. Move the tractor to a safe area, then begin the parked regeneration cycle process. (See Operating procedure for parked regener- ation on page 42.) PM warning level: 2-2 Buzzer: Sounding every 3 sec- onds PM warning level: 3 Buzzer:
Sounding every 1 second Engine output: 50% If the parked regeneration cycle is interrupted or the tractor is continuously operated in the PM warning lev- el 2: The engine warning indicator starts flashing. The parked regeneration indicator starts flashing. Immediately stop working the tractor, move the tractor to a safe area, then begin the parked regeneration cycle process. (See Operating procedure for parked regener- ation on page 42.) If the tractor is operated further and the oper- ator ignores the warning signs, then regener- ation will be disabled. PM warning level: 4 Buzzer: Sounding every 1 second Engine output:
50% If the regeneration cycle is interrupted or the tractor is continuously operated ignoring the warning signs, in the PM warning level 3: The engine warning indicator remains con- stantly “ON”. Immediately move the tractor to a safe place, park it there and turn the engine “OFF”. Contact your local KUBOTA Dealer. • At this level, do not continue to operate the tractor; otherwise, damage may re- sult to the DPF and engine.