Bartscher GG740 Manual De Instrucciones página 12

ADJUSTING PRIMARY AIRSUPPLY TO MAIN BURNER (Fig. 3)
- Unscrew the bolt (Ref. D) that fi xes the bush that adjusts the primary air supply (Ref. C).
- Position the bush (Ref. C) at distance "H" according to the type of gas installed (see 'Primary air' on the spe-
cifi cations table).
- Tighten the fi xing bolt again (Ref. D).
- Seal the adjusted part with tape to prevent tampering.
N.B.: the primary air supply has been correctly adjusted when it can be guaranteed that the fl ame will not detach
itself when the burner is cold and if there is no blow-back when the burner is hot.
REPLACING THE PILOT BURNER NOZZLE (Fig. 4)
MINIMUM ADJUSTMENT (Fig. 5)
1
WARNING! After each conversion to a different gas type make sure you:
- Fix an indelible sticker on the rating plate giving the data relative to the new installation.
- Restore the paint seals on the adjusted parts.
- Test for leaks on the gas circuit.
Before delivering the appliance to the user:
- check that it operates correctly,
- instruct the user on how to use it.
- Unscrew screwed-on cap (Ref. 1), remove the nozzle and
replace it with one that is suitable for the type of selected
gas.
- Refi t the screwed-on cap (Ref. 1).
- Use a foam product to check that the cap does not leak.
1
Fig. 4
- Remove the knob and the front cover.
- Use the bypass screw to adjust minimum fl ow. Loosen the
screw the increase the fl ame and close it to decrease the
fl ame. To adjust correctly, follow this procedure.
- For liquid petroleum gas (LPG) (G30-G31) turn the screw to
minimun.
- For gas G20: adjust the bypass screw until the correct mini-
mum has been obtained and check that the minimum fl ame
is stable over all the burner surface and check that the fl ame
does not go out or back fi re when it is lowered from maximum
to minimum.
Fig. 5
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