Bartscher 285.102 Mode D'emploi page 82

Regulating the burner primary air (figg. 57, 58 – p. 18)
After replacing the burner nozzle, it is necessary to regulate the primary air. Therefore, unloose the
screw; bring the distance between the bushing and the burner stirrup to the correct measurement (x
value) with reference to tables 2÷11 (pp. 64÷72). Then, tighten up the screw and check the accuracy
of x value.
Replacing the pilot burner nozzle (figg. 59, 60, 61 – p. 18)
In order to replace the pilot burner nozzle, open the oven door and remove the cast iron bottom (1
and 2); unscrew the screws and remove the protection cover of the Venturi tube (3). Then, extract
the drilled protection (4); unscrew the nut (6) and extract the tube of the pilot burner (5). Remove
the biconic screw (7) and the pilot burner nozzle (8). Replace it with the nozzle suitable for the gas
type to be used. Put the new nozzle into the biconic screw and assemble it; put back the pipe of the
pilot burner and tighten the nut well. Put back the drilled protection, the stirrup and the cast iron
bottom.
All Hotplate
Replacing the burner nozzle (fig. 38, 39 – p. 14)
In order to replace the burner nozzle, remove the knob (1), the box (2), and the control panel (3).
Unloosen the screw (4) that secures the regulation of primary air (7) with a screwdriver and open it
completely. Unscrew the nozzle (6) from the nozzle holder (5) with a spanner and substitute it with
the nozzle suitable for the gas type to be used, as shown in tables 2÷11 (pp. 64÷72). Assemble the
new nozzle and tighten it well; then, regulate the primary, air as indicated in the next paragraph.
Finally, place back the panel and the knob.
Regulating the burner primary air (fig. 40 – p. 14)
After replacing the burner nozzle, it is necessary to regulate the primary air. Therefore, unloosen the
screw (1); bring the x value to the correct measurement with reference to tables 2÷11 (pp. 64÷72).
Then, tighten up the screw (1) and check the accuracy of x value.
Regulation at minimum (fig. 41 – p.14)
In order to function with liquid gas, the by-pass (1) has to be fully screwed and properly tightened.
On the other hand, while functioning with methane gas, the by pass (1) has to be regulated in the
following way: read the value of the minimum output in tables 2÷11 (pp. 64÷72) and convert it into
l/h using the "Volumetric method" previously described; at this stage the appliance can be started
up, following the instructions. Then, it is necessary to regulate the by-pass capacity by reading the
meter, turning it clockwise for reducing the flow and anti-clockwise for increasing it. After
regulating, fix the by-pass position with a drop of red paint, suitable for this use.
Replacing the pilot burner nozzle (fig. 42 – p.15)
In order to replace the pilot burner nozzle, remove the knob and the control panel as in figure 38.
Then, screw the fitting (1) that secures the gas supply pipe of the pilot (2) to the pilot support (4);
take out the nozzle (3). Substitute the nozzle with the nozzle suitable for the gas type to be used, as
shown in tables 2÷11 (pp. 64÷72). Then, assemble the new nozzle, place back the pipe and tighten
the fitting fully. Finally, place back the panel and knob.
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