024-03 - Gas cooker
8
WARNING
It is not possible to adjust nominal capacity in advance.
Checking power rating when using LP
gas
Check that the type of nozzles used match manufacturer's
specifications.
Check that the output pressure regulator installed collate-
rally to the plant conforms to the specifications laid down
in paragraph "Checking input pressure" (see data plate or
measure the pressure).
Checking the primary air
The primary air in the open burners can be adjusted.
Air volume flow is correct when there is sufficient protec-
tion against the flame rising when the burner is cold or li-
ght-back when it is hot.
Checking the functions
- Start the appliance in accordance with the instructions;
- Check the gas tubes for leaks;
- Check that the flame on the main burner lights properly
and is correctly formed, even on low;
- Draw up a servicing and maintenance contract.
Note for the installer
- Explain and demonstrate to the user how the machine
works according to the instructions, and hand him this
manual.
- Remind the user that any structural alterations to the
room housing the appliance may affect the combustion
air supply. Once the alterations have been completed,
the appliance and its functions should be thoroughly
checked.
Running the appliance on other types
of gas
When changing to another type of gas, e.g. from natural to
LP, or to another gas group, consult the “TECHNICAL DA-
TA” table to make sure you use the appropriate nozzlzes
for the main burner.
The nozzles for the cooking top burners for different types
of gas, marked in 100ths of mm, are in a case supplied
with the appliance.
When the appliance has been transformed or adapted, re-
check its functions as described in paragraph "Checking
the functions".
Replacing the gas ring nozzles (Fig. 2)
To change nozzle (C), remove the knobs and loosen the
control panel fixing screws.
Remove the control panel, disconnect the ignition lead
and unscrew the nozzle from the nozzle holder with a
spanner.
Replace with a new nozzle (see “TECHNICAL DATA” ta-
ble); if necessary, to facilitate this operation push the air
adjustment sleeve upwards loosening screw (G).
After fitting the nozzle, reset primary air distance “A” (see
“TECHNICAL DATA” table).
Replacing the oven nozzle (Fig. 3)
To gain access to the oven burner, remove the oven floor
(from inside the oven cavity).
Remove screws D (Fig. 3) and remove the burner by pul-
ling it forwards; using the special spanner, unscrew the
injector C (Fig. 3) and replace it with the correct one for
the type of gas.
Replace the burner, following the above procedure in the
reverse order.
Adjusting the primary air
Light the burner and inspect the flame; if necessary, adju-
st the air as follows:
Loosen screw D (Fig. 3), move the burner in the direction
necessary to obtain a steady, even flame.
Replacement of nozzle of gas oven
GN 1/1 ventilated (Fig. 2B)
After opening the door, remove the grill, the grill supports
and the stainless steel bottom, then unscrew the protec-
tion form the nozzle zone.
Remove the air adjustment by unscrewing screw (2). The
nozzle is now accessible. Replace it with one that is suita-
ble for the type of gas to be used. See the table "TECHNI-
CAL DATA". After replacement, reassemble everything
and perform air adjustment (see the table "TECHNICAL
DATA").
Adjusting the low flame of the gas
rings (Fig. 2)
Referring to the “TECHNICAL DATA” table, set the low fla-
me screw (D) as follows:
- if the appliance is to run on LP gas, tighten the low fla-
me screw as far as it will go;
- if the appliance is to run on natural gas, turn the low fla-
me screw while simultaneously adjusting the primary air:
●
read off the setting in It/min which corresponds to
the heat value (calculated by the “Volumetric Method”)
in the Gas Flow Setting Table (2);
●
start the appliance up according to the instructions;
●
after allowing the appliance to run for 45 minutes,
turn the knob to low and set minimum by turning screw
(20) (to the right = gas flow decreases; to the left =
gas flow increases).
Adjust the gas flow.
Adjusting the low flame of the oven
(Fig. 3)
Loosen screw H (Fig. 3) by two or three turns after having
removed the knob and the control panel cover. Light the
burner and keep it lit for at least 10 minutes with the knob
in the MAX
position, then put the knob to Min
and
tighten screw H until a reduced but steady, even flame is
obtained (the flame must warm the thermocouple even
on low).
