24
25
Functional details
Functional details
Adjusting ignition electrodes
For a smooth ignition, the setting of the ignition electrode
must be controlled regularly.
Attention!
Immediately contact our service in case of recurrence.
Excess temperature sensor
As an additional safety device the high-pres-
sure cleaner is equipped with an excess tem-
perature sensor inside the chimney. Should
the safety devices as e.g. the float monitoring
device be defectice and the burner continues
to heat although the heating coil does not
conduct away heat a destruction of the
heating coil would be inevitable.
As soon as the temperature inside the
chimney exceeds 260 °C the excess tem-
perature release triggers and cuts out the
appliance. The display of the excess tempe-
rature sensor is located on the back of the
switchbox inside the high-pressure cleaner.
Trooble shooting excess temperature
see chapter „Small repairs - do it yourself!“
in these operating manuel.
Heat exchanger
The water is forced through a heating coil by the high-pressure pump.
The fuel pump sucks the fuel oil from the fuel tank via a fuel filter an and trans-
ports it to the injection nozzle. The heat exchanger is heated by a high-pressure
fan heater. A ventilator draws in the cold, fresh air from the bottom end of the
high-pressure cleaner and forces it upwards between the outer mantle and the
inner mantle. In the process, the fresh air is pre-heated and the outer mantle of
the heat exchanger is cooled.The pre-heated air is pressed through a mixing unit.
Here finely atomized fuel is injected via a nozzle and mixed with the air.
The electrodes located below then ignite the fuel-air mixture. The flame burns
from top to bottom, turns round and the hot gas flows past the heating coil
on its way back up. The burned gases collect in the exhaust chamber and are
emitted from the exhaust gas outlet.
1.
Exhaust gas outlet
2.
Mixing unit and nozzle
3.
Electrodes
4.
Inner cladding
5.
Outer cladding
6.
Fuel filter
7.
Fuel pump
8.
Heating coil
9.
Fan
1
3
7
5
8
4
9
Summary of Contents for therm 1165-1
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