Conditions For Dpf Operation - Zetor Forterra CL 100 Operator's Manual

SYSTEM OF ADDITIONAL TREATMENT OF EXHAUST GASES

Conditions for DPF operation

When the tractor is operated, the diesel particulate filter is fouled with solid particles during the fuel
combustion while the engine is running. The regeneration of the diesel particulate filter in case of increased
temperature of exhaust gases is performed at higher engine load. The regeneration of the DPF filter is
supported by evaporation of diesel fuel into the piping of the exhaust system through the oxidation catalyst.
Indication of operation of the full diesel particulate filter is indicated by the pair of signal lamps
(green and orange/red) on the instrument panel. Activation of the green signal lamp indicates that there are
optimum conditions for regeneration of the diesel particulate filter. Flashing of the green signal lamp indicates
that regeneration of the diesel particulate filter is being performed. Defects of the system of the diesel
particulate filter when the engine is running are indicated by switching the red signal lamp on the instrument
panel, corresponding error message on the display together with an acoustic signal.
A short-term activation of the red signal lamp without the subsequent acoustic signal does not
mean indication of the defect.
During operation of the tractor with a low engine load, e.g. during a long-term operation at idling, the risk that
the diesel particulate filter becomes full is higher. While the engine is running, this state is indicated by
activation of the orange signal lamp of the diesel particulate filter, by the subsequent acoustic signal and by
the corresponding error code on the display of the instrument panel. If this situation occurs, increase the
engine load and continue in your work until the orange signal lamp of the diesel particulate filter is
deactivated and the acoustic signal stops. By increasing the engine load the temperature of exhaust gases is
increased and the solid particles blocking the diesel particulate filter are combusted. The conditions suitable
for regeneration of the filter of solid particles DPF while the engine is running are indicated by activation of
the green signal lamp on the instrument panel.
The increased engine load means the operation of the tractor at higher revolutions of the
engine with attached implements, consumption of the power through the take-off shaft or outer
hydraulic circuit; increasing the engine speed of the standing tractor is not sufficient.
The time necessary to decrease the DPF resistance depends on the engine load and how
much the DPF filter is full.
There are high temperatures achieved during regeneration of the DPF filter. Great care should
be taken when the tractor is operated in a flammable environment!
Do not stop the engine during regeneration of DPF (the green signal lamp flashes) - there is
a risk of damage of the system of treatment of exhaust gases. Do not stop the engine immediately
after regeneration of DPF filter.Leave the engine idling at low revolutions until sufficient decrease of
temperature of the system of treatment of exhaust gases is achieved!
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