20ENCleaning and Care (Continued)Problem Dirt1 Remove burnt-on sugar, melted plastic, aluminium foil or other materials with a glassscraper immediately and while still hotImportant: There is a risk of burning yourself when the glass scraper is used on a hotcooking zone:2 Clean the hob as normal when it has cooled downIf the cooking zone on which something has meltedhas been allowed to cool, warm it up again forcleaningScratches or dark blemishes on the ceramic glasssurface, caused, for example, by a pan with sharpedges, cannot be removed However, they do notimpair the function of the hobTo avoid damaging your appliance• Do not use the hob as a work surface or for storage• Do not operate a cooking zone if there is no pan on the hob or if the pan is empty• Ceramic glass is very tough and resistant to temperature shock, but it is notunbreakable. It can be damaged by a particularly sharp or hard object dropping onto thehob• Do not use pans made of cast iron or which have damaged bases with rough edges orburrs Scratching may occur if these pans are slid across the surface• Do not place pans on the hob frame. Scratching and damage to the finish may occur.• Avoid spilling acidic liquids, for example, vinegar, lemon juice and descaling agents,onto the hob frame, since such liquids can cause dull spots• If sugar or a preparation containing sugar comes into contact with a hot cooking zoneand melts, it should be cleaned off immediately with a kitchen scraper while it is still hotIf allowed to cool, it may damage the surface when removed• Keep all items and materials that could melt, for example, plastics, aluminium foil andoven foils, away from the ceramic glass surface If something of this nature melts ontothe hob, it must be removed immediately with a scraperC21RJAN_BOL-00139A-02_EN.indd 20 23/11/2555 17:23:04