Dampcomat HWO 1200 SUPER Manuel D'instructions page 27

this to the temperature which has been set at the thermostat at the front of the
machine (fig. 1;19). When temperature is too low, the burner starts, when the
water has reached its temperature, the burner stops.
The tube coil is three times protected against overheating:
1. thermostat knob (fig. 1;19): when the right temperature is reached, the fuel
circuit is closed by an electric valve.
2. water mains switch: this protection checks if sufficient water is flowing through
the tube coil. If not, then the switch closes the fuel circuit by an electric valve.
3. micros witch: this switch is set to the pressure regulator. When the pressure is
set too low, (less then aprox. 30 bar/420 psi) the micro switch closes the fuel
circuit by an electric valve.
The oil burner operates as follows: The burner motor controls both air fan and fuel
pump. By means of an electric valve, the fuel is pumped into the burner. Here the
fuel gets vaporized and set to fire by two sparks. To achieve a high efficiency level,
the flames and hot smoke gasses are blown through the tube coil to an optimum.
This causes a minimum of lost heat through the funnel. Ignition is continuously, so
that hardly any smoke occurs at starting the burner.
The fuel pump is protected against running dry by a fuel level meter in the tank. If
the machine runs out of fuel, the switch turns of the burner motor and so the fuel
pump stops functioning. The cleaner now only gives cold water until fuel is added
again.
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