Bartscher 900 K4 series Bedienungsanleitungen Seite 47

REGULATIONS AND SUBSTITUTION FOR USING A
DIFFERENT GAS THAN THE TYPE PROVIDED FOR
Functioning with different gas than the type provided for.
For changing to another type of gas it is necessary to substitute the nozzle in the main burners and
in the pilot burner, following the indications given in the following paragraphs. The type of nozzle
to install can be found in tables 2÷10 (pages 23÷25). The nozzles for the main burner, marked with
the relative diameter would be request to the firm. When the conversion is completed, check the
tightness of the pipe fittings and also that the ignition and functioning of both pilot burner and main
burner, at both minimum and maximum, are correct. It may be necessary to check the output
(power).
Then, modify the technical sheet (fig. 5 – page 3) and place in the position H the sheet relevant to
the new gas delivered as standard equipment.
Substituting the burner nozzle (figg.10, 11 – pag.5)
To substitute the nozzle of the burner, first of all it is necessary to remove the knob (1), the drip pan
(2), and the control panel (3). After clearing the work area, loosen the screw which blocks the
primary air regulating bush (5) and open it completely; unscrew the nozzle (6) with a spanner and
substitute it with a suitable nozzle for the type of gas used, shown in tables 2÷10 (pages 23÷25).
Reassemble the nozzle, tightening it well and proceed with regulating the primary air, as indicated
in the next paragraph. When all this is done, replace the parts removed previously.
Regulating the primary air of the burner (fig. 10, 12 – pag.5)
After having substituted the burner nozzle, the primary air must be regulated; to do this, loosen the
screw (4) which fixes the bush (5), bring value X to the correct measurement, referring to tables
2÷10 (pages 23÷25), tighten the screw (4) and check the accuracy of value X.
Substituting the By-Pass (figg.10, 12 – pag.5)
To substitute the by-pass, firstly the knobs (1) must be removed and then the drip pan (2). When the
work area is clear, unscrew the by-pass (7) with a screwdriver and substitute it with the by-pass
suitable for the type of gas to be used, shown in tables 2÷10 (pages 23÷25). Reassemble the by-pass
and tighten it well.
Put back the control panel, the drip pan and the knobs.
Substituting the pilot burner nozzle (figg.10,13 – pag.5)
To substitute the nozzle of the pilot burner, first of all, the knobs (1) must be removed, the drip pan
(2) and the control panel (3), as in figure 10. Unscrew the fitting (8) which fixes the gas supply pipe
of the pilot (9) and remove the nozzle (10). Substitute it with the nozzle suitable for the type of gas
to be used, shown in tables 2÷10 (pages 23÷25). Then proceed to assemble the new nozzle,
reposition the pipe and tighten the fitting fully. When all this has been done, put back the parts
removed previously.
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