Maintenance - BERTO’S G6F2B Bedienungshandbuch

106 |
FG SERIES GAS OVEN AND TUTTOFORNO T
Replacing the burner nozzle (gas oven FG - Fig. 4.0
and 4.1)
Remove the bottom guard "A" (Fig. 4.0). Loosen screw (2)
fixing the primary air bushing and push the latter into the
Venturi tube.
The nozzle is now perfectly accessible.
After replacing the nozzle according to the type of gas
being used and the technical data, reassemble everything
and adjust measure "H" (see table on burners).
Replacing the burner nozzle (Tuttoforno T - Fig. 4.2)
Remove the bottom panel inside the cooking chamber.
Unscrew and remove the primary air regulator (1), then
replace the nozzle.
After replacing the nozzle according to the type of gas
being used and the technical data, reassemble everything
and adjust measure "H" (see table on burners).
Adjusting the pilot flame (gas oven T - Fig. 4.3)
Remove the bottom. Remove the bottom and use a 7 mm
EN
hexagonal spanner to adjust the pilot light.
When using LPG, the screw (11) must be tightened all the
way down.
Regulating the pilot light (gas oven FG - Fig. 4.4)
The pilot light has nozzles and fixed airflow. The only thing
that has to be done is to change the nozzles according to
the type of gas, proceeding as follows:
- Unscrew the biconical pressure nut (14) and the pilot
nozzle (16).
- Replace the pilot nozzle with an appropriate one after
checking the "BURNERS" table.
- After changing the pilot nozzle, screw down the
biconical pressure nut (14).
Adjusting the low point control (gas oven - Fig. 5)
After having removed the contro panel, adjust the low
flame screw (36):
- when using LPG, it should be fully screwed down;
- if natural gas is used:
1- Find the knob of the corresponding cock.
2- Turn on the burner, set the maximum temperature and
once it reaches it, turn it to the minimum.
3- Adjust the minimun flow by means of the screw 36.
The flow increases by loosening the screw and
decreases by tightening it.
4- Once the flame is considered suitable for a minimum
setting, check that it corresponds to the minimum
capacity indicated in the table on burners.
5- If the power is less than the value in the table, turn the
minimum screw again and repeat the check
6- If the power is greater than the value indicated in the table,
tighten the minimun flow screw and repeat the check.
APPLIANCE SAFETY SYSTEMS
Safety valve: a valve with a thermocouple stops the gas
flow from reaching the main burner in the event that the
pilot flame goes out.
To restore the operation, repeat the steps relevant to
igniting the pilot device.
Safety thermostat (only ovens - Fig 7.1)
All the cookers have a manual reset safety thermostat
positioned on the control panel or behind it. When the
safety thermostat is behind the control panel, it can be
reached by removing the burner grids and tray from the
worktop or the control panel.
In gas cookers the safety thermostat blocks the gas flow
if there are any serious anomalies. If it triggers, inform the
service centre.
To reset it, unscrew nut "A1" and use a narrow screwdriver
to press firmly on the reset button.

MAINTENANCE

Attention!
Before effecting any maintenance or repair operation,
disconnect the appliance from the gas or electric
power supply.
The following maintenance programme should be carried
out at least once a year:
- Check that all the safety and setting devices are
working properly;
- Check that the burners are working properly with
regard to:
• ignition
• combustion safety;
- Check the functions of the appliance as described in
paragraph "Checking the functions".
Whenever the gas ring burners need cleaning, proceed
as follows:
- remove the grids, the burner caps and the burners.
- Clean the parts with detergent, water and a suitable
utensil, rinse and dry.
- Make sure when reassembling the parts that they are
slotted in correctly.
WARNING
Every time a replacement involving gas input parts is
made, recheck all functions and test for leakage.
HOW TO REPLACE COMPONENTS
(SPARE PARTS)
USE ONLY ORIGINAL SPARE PARTS SUPPLIED BY THE
MANUFACTURER.
All maintenance must be carried out by qualified
personnel. The appliance should be serviced at least
once a year, which is why we recommend signing our
maintenance agreement.
To replace the following pieces, firstly remove the control
knobs and the control panel (after having loosened the
fixing screws) as well as any other necessary panel.
Cock with safety valve for open flame (Fig. 2)
Loosen the gas pipe and thermocouple fitting, loosen the