Use and maintenance manual
17
After measuring the gas supply pressure, turn the oven off, close the gas cock located upstream
and remove the pressure gauge hoses from the pressure points. Tighten the fixing screws in the
pressure points, tighten the regulator screw cap and seal it with paint to discourage any
tampering.
3.3
– Conversion to other types of gas
If any spare parts are needed, contact the manufacturer’s service centre. The conversion must be
carried out by qualified staff. Referring to the technical specifications in table 4, replace the main
injector and adjust the primary air through the relative bushing.
WARNING - Carry out this operation only after closing the gas shut-off cock located upstream of
the oven and disconnecting the oven from the electrical power supply. Check that the diameter of
the injector is stamped on it in 1/100 of a mm.
Perform the following operations in sequence:
To access the devices to be adjusted and replaced, remove the oven’s front panel.
With a suitable tool, undo and replace the injector “U“ with the correct one for the gas supply.
Undo the fixing screw and adjust the air bushing “B“ to the correct distance H, according to the
specifications in tables 4a or 4b and in Fig. 6. Then fully tighten the fixing screw and seal it with
paint.
Put the oven’s front panel back in place.
Fig. 6
Key:
B = Primary air bushing
T = Burner Venturi pipe
U = Injector
R = Burner branch
Table 4a - EGA:
Gas
Inlet
pressure
Outlet
pressure
Injector
diameter
Distance [H]
G30
G31
30/37
mbar
28/35 mbar
195
1/100
mm
41 mm
G20
20 mbar
9 mbar
355
1/100
mm
16 mm
Table 4B - EGB:
Gas
Inlet
pressure
Outlet
pressure
Injector
diameter
Distance [H]
G30
G31
30/37
mbar
28/35 mbar
230
1/100
mm
41 mm
G20
20 mbar
9 mbar
410
1/100
mm
16 mm
