10MaintenanceTroubleshootingBefore performing any maintenance operations, including cleaning, take the following precautions:• Ensure that the oven is not working and completely cold.• Ensure that the electrical power is not present.• Make certain that the electrical power cannot be accidentally turned on. Disconnect the plug from theelectrical power socket.• Use individual protection devices in compliance with the local directive.• Always operate using appropriate maintenance tools.• Once maintenance and repairs are finished, before starting up the oven, reinstall all of the protectiondevices and reactivate all of the safety devices.ORDINARY MAINTENANCE FOR THE USERCleaning of refractory surfaceThe oven must be cleaned at the end of each use, in compliance with the hygiene regulations and to safeguardmachine operation. Before proceeding the oven temperature must be at 350° C for roughly 60 minutes (setting350° on the top and on the bottom as well), for an easy baking scoriae carbonization. Once the temperatureis reached, switch off the oven and wait until the temperature drops to roughly 100°C (the best temperaturefor cleaning). At this stage disconnect the electric power supply. After dressing in gloves and suitable dressesas protection from burns, open the door and with a brush in natural fiber with a long handle, proceed to a firstremoval of baking fragments from the refractory stones, then take them out by a suitable vacuum cleaner. Atthe end, clean the refractory stone with an humid cloth.External cleaning of the ovenOven external areas cleaning, external parts in stainless steel, door glass, and switch panel, must be carriedout at cold oven and at disconnected electric power supply. Use a sponge or a soft cloth, not abrasive,slightly humidified with water or possibly with a neutral detergent not corrosive. In any case, do not use waterjets which can penetrate through the electric parts and easily damage them, as well as creating hazardousconditions.SYMPTOM POSSIBLE CAUSE SUGGESTED REMEDYThe oven doesn’t heat despite thetemperatures are correctly set. Thepilot lights of the heating elementsare off.Main switch off (positioned on “0”). Set the main switch to position “1”.The oven doesn’t heat despite themain switch is on (position 1) andthe temperatures are correctlyset. The function pilot lights of theheating elements are off.No electric Energy in the net. Check the general contactor, thesocket, the plug, and the supplycable.