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SYSTEM OF ADDITIONAL TREATMENT OF EXHAUST GASES
Error signalling of DPF system
Defects of the system of the diesel particulate filter when the engine is running are indicated by
glowing or flashing of the orange / red signal lamp on the instrument panel and by the subsequent acoustic
signal. If the error is not eliminated, it is indicated every time when the engine is started.
During operation there may be a situation when the pressure exceeds the set value for a short
time. This state is indicated by a short-time activation of the orange / red indicator light of the DPF
filter on the instrument panel. It is not an error. Errors are always indicated by the red indicator light
of the DPF filter, acoustic signal and indication activated on the instrument panel.
type of
DPF signal lamp
indication
signal lamp colour
warning
(regeneration
necessary)
warning
(regeneration
necessary)
1st degree of
limitation
2nd degree
of limitation
Conditions for SCR system operation
The amount of urea in the tank is displayed on the instrument panel. If the amount of urea in the tank is
exhausted when the engine is running, the injector in the exhaust manifold is in danger of being damaged
and the engine power can be reduced. The catalytic reduction is stopped and the amount of harmful
emissions in exhaust gases is increased. When urea is added in the tank, the catalytic reduction is restored.
Operation of the tractor without the SCR (selective catalytic reduction) system is prohibited!
Conditions for proper functioning of the system
- temperature of cooling liquid must be higher than 60°C,
- working temperature of the catalyst must be higher than 250°C
- outdoor temperature must be higher than -20°C,
- engine revolutions must be higher than 1,000 rpm
- requirement for the withdrawn torque must be higher than 20%.
If urea freezes, the tank is electrically heated. If no melting during 70 min occurs, the engine
power together with the corresponding error message are activated.
defect signal
lamp
orange
signal lamp
activated
orange
signal lamp
flashes (0.5
Hz)
orange
signal lamp
flashes (0.5
Hz)
red signal
lamp
flashes (0.5
Hz)
acoustic
signal
2 x 3 s
67
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