- 31 -
7.2.2 YEARLY MAINTENANCE
This is only to be done by an authorized, skilled technician!
1) Check burner ignition.
2) Check all the settings of the gas multi-functional valve.
3) Check the pipe bundle if necessary.
4) Check the seal of the door gasket.
5) Check the seal of the gaskets of the door double-glazing.
6) Check the seal of the lamp-holder glass gasket.
7) Remove and thoroughly clean the fan. Open the screen by pushing on the pins and turning them through 90°C. Remove the
fan and clean it thoroughly (left-hand nut). Fit the screen back on, putting the pins back in their original positions
and pushing them fully in so you hear them click home.
8) It is also recommended to oil the seal of the driving pin passage.
9) Descale the probes, taking care not to swap the wires over.
7.2.3
SAFETY DEVICES
CONTROL AND SAFETY SYSTEMS OF THE OVEN
- PROTECTION OF THE AUXILIARY ELECTRIC CIRCUIT.
Controlled by a fuse (6.3 A) on the auxiliary circuit line and a fuse on the flame control unit supply.
- MOTOR-DRIVEN FAN PROTECTION
The motor-driven fan has an internal overload switch that automatically trips if the windings overheat. Reset is automatic
when normal temperature returns. The likely causes of this safety device tripping comprise: rubbing or stiffening of the motor
fan-pin system, excessive uneven scale on the blade, etc.
- OVEN DOOR MICROSWITCH.
The oven switches off automatically when the oven door is opened (unless in ventilation function).
- SAFETY THERMOSTAT
This device trips if there is any trouble with the oven temperature control thermostat so the admitted limits are not exceeded.
In the event of a failure, in order to restore operation, take off the control panel on the right and press the red push-button of
the safety thermostat. Notify a technical service centre.
- FLAME CONTROL SYSTEMS
If the gas supply fails they automatically shut off the gas valves.
A control unit controls both burners, ignition, flame detection and closing the safety valve if there is no ionization signal via
the flame.
7.3
SWITCHING OFF IN THE EVENT OF EQUIPMENT FAULTS
IMPORTANT: IT IS NECESSARY TO SWITCH THE OVEN OFF WITH THE MULTI-POLAR SWITCH UPSTREAM.
CLOSE THE WATER AND GAS SHUT-OFF VALVE.
REQUEST AN AUTHORIZED TECHNICIAN FROM YOUR DEALER.
A)
Replacing the light bulb illuminating the cooking chamber (see above paragraph).
B)
Waste water/cooking vapour outlet clogged.
If the waste water or cooking vapour outlet gets clogged, you need to:
- Check that the outlet is clear as far as the open siphon.
- Rinse thoroughly with running water and check it flows off freely when drained.
C)
The motor-driven fan stops.
There may be two causes:
- The microswitch is defective, or set wrongly, or the door is not properly shut.
- The overload switch has tripped, cutting off the power supply in the event of overheating.
Resetting is automatic.
If the motor stops often, request a skilled technician to find the causes of the trouble.
D)
Oven heating fails to work.
- Check whether the door is shut and the fan turns.
- Check the position of the gas multi-functional valve knob. If heating fails to work, the safety thermostat
of the cooking chamber has probably tripped.
In the event of overheating >350°C in the oven, the safety thermostat in the cooking chamber cuts off the
power and gas to the burner.
- The safety thermostat in the cooking chamber can only be reset by a technician authorized by the dealer.
7.3.1
STEPS TO TAKE IF THE OVEN IS NOT TO BE USED FOR A LENGTHY PERIOD.
After thoroughly cleaning the oven both inside and outside:
- Open the multi-polar switch contacts to cut off the power supply.
- Shut the gas valve upstream from the oven.
- Shut the water valve upstream from the oven.
- Give all the steel surfaces a good wipe over with a cloth lightly soaked in Vaseline oil in order to apply a protective film.
- Leave the oven door half open.
Talcum powder on the gaskets.
