7Using the ceramic glass hobCeramic glass surfaceThe glass is hard, and has been tempered to withstandheat, cold and temperature shocks. But like all glass itis sensitive to impact. Do not stand on the ceramic glasssurface.If scratches or cracks are noticed, disconnectthe cooker from the electrical supply to avoidthe possibility of electric shock and call younearest Service Force Centre.Keep all objects and materials which can meltaway from the cooking surface, e.g. plastics,aluminium foil.Care should be taken when preparing food or drinkscontaining sugar. If anything of this natureaccidentally comes into contact with the ceramicsurface it must be scraped off immediately whilestill hot and wiped away to avoid damage to thesurface.Energy consumptionTo save energy, you should:- use only cooking and frying utensils with smooth, flatbases.- place pots and pans in position before switching onthe cooking zone.- wherever possible, cover pots and pans with a lid.- switch off the cooking zone a few minutes before theend of the cooking time, in order to make use of theresidual heat.- use the residual heat of the cooking zones for keepingfood warm or for melting.- position pots and pans centrally on the cooking zones.Saucepans and frying pansSaucepans and frying pans should not be smaller thanthe cooking zone, and preferably not more than 10-15mm larger than the diameter of the cooking zone.Always use cooking and frying utensils with smooth, flatbases.The bases should always be clean and dry. Cook with alid in place.Check that the bases of utensils are smooth andundamaged; bases with burrs and sharp edges willscratch the ceramic glass surface.To avoid scratching or damaging the ceramic cookingsurface, pots and pans should be moved on the plate bylifting them, and not by sliding.Utensils with aluminium and copper bases can leavebehind metallic discolourations which can only beremoved with difficulty or sometimes not at all.Take care when frying food in hot oil or fat,as the overheated splashes could easilyignite.