Do not heat a cooking vessel (e.g. roaster, pan, grill stone) on more than one burner at the same time. The resulting heat accumulation will damage the appliance. Care and cleaning In this chapter you will find tips on how to maintain and clean your cooktop correctly. m Risk of electric shock! Penetrating moisture may cause an electric shock. Do not use any high-pressure cleaners or steam cleaners. m Risk of burns! The accessible parts become very hot when in operation. Never touch hot parts. Keep children at a safe distance. Caution! Risk of surface damage: Do not use these cleaners .harsh or abrasive cleaning agents .oven cleaners .corrosive or aggressive cleaners, or those containing chlorine .cleaning agents with a high alcohol content .hard and scratchy sponges, brushes or scouring pads If such an agent comes into contact with the appliance, wash it off immediately with water. Thoroughly wash out new sponge cloths before using them! Caution! Be careful when removing or fitting the pan support in order to avoid scratching the cooktop. Lift the pan supports with both hands. Cleaning the appliance Clean the appliance after every use once it has cooled down. Remove spills immediately. Burnt in residues may be difficult to remove. Keep the air inlets underneath the pan support clean. Do not cover the air inlets. Make sure the burner parts are dry before assembly. Only operate the appliance with all parts dry. Damp burner parts will cause malfunctions when igniting or unstable flames. When assembling the burner parts, make sure they are properly positioned (catching pin). Make sure all burner parts lie evenly flat. Part/surface Recommended cleaning method Stainless steel surfaces Clean with soapy water – dry with a soft cloth. Do not use too much water to avoid water entering the appliance. Soak burnt-in remainders in a little water and detergent. Do not scrape away. To remove stubborn residues or yellowish discolouration because of the heat, you can order a stainless-steel cleaner (order number 311413). Pan support Carefully take off pan support for cleaning. Soak in soapy water. Clean with a brush and some detergent. Be careful when cleaning around the rubber rests to ensure they do not come loose. Rinse with clear water. Carefully dry pan support before assembly. Do not clean in a dishwasher! Burner parts (brass) Clean with soapy water – dry with a soft cloth. Port openings of the burner ring must be kept free. Be careful not to loose the small parts. Do not clean in a dishwasher! Control knobs Clean with soapy water – the cloth should not be too wet. Dry with a soft cloth. Cleaning the electrode A soiled elctrode will cause malfunctions when igniting or during flame monitoring. If necessary clean the electrode with the enclosed brush. To avoid damage clean the electrodes carefully, do not twist or damage the electrodes. Do not switch on the gas cooker while cleaning the elctrode. Burnt-in residues To remove stubborn, burnt-in residues you can order the grill cleaning gel (order number 463582) from your specialist retailer or from our after-sales service. You can use it to clean the pan supports, the burner parts and the stainless steel cooktop base. If necessary apply the gel and leave overnight. Please observe the manufacturer’s instructions. Discolouration of burners After long use, the brass burner parts turn darker due to natural oxidation. The color change doesn't affect use. Proceed as follows to eliminate this discoloration: 1 Prepare a solution of equal amounts of white vinegar with a maximum of 8% acid (typical household vinegar) and warm water. 2 Immerse the burner parts in the solution for a maximum of 10 minutes. Remove stubborn stains with a cloth or sponge. 3 Then rinse the burner parts thoroughly with clear water and dry them well prior to next use. Caution! Too strongly concentrated solution or too long of contact with vinegar will damage the surface of burner parts! Trouble shooting Malfunctions of ten have simple explanations. Please read the following notes before calling the af ter-sales ser vice. m Risk of electric shock! Incorrect repair s are dangerous. Repair s may only be carried out by one of our trained af ter-sales engineer s. If the appliance is faulty, unplug the mains plug or switch of f the fuse in the fuse box. Cont act the af tersales ser vice. Malfunction Cause Solution Burner does not ignite when switched on. No power supply. Turn all control knobs to 0. Check in the fuse box whether the fuse has blown. Burner does not ignite when switched on. Audible signal sounds. Fault on the burner or the gas supply. Turn all control knobs to 0. Check: . Burner parts fitted correctly? . Gas shut-off valve open? . Burners dry and clean? . Air in the line after first connection or a change of gas cylinder (liquid gas)? . Gas cylinder empty (liquid gas)? Burner goes off during operation. Audible signal sounds. Fault on the burner or the gas supply. Turn all control knobs to 0. Wait un...