Double Grate (HOB 250)The positioning feet on the grate must be placed in the roundgrooves located at the front and rear of the cooktop.AA. Locator pinB. GridC. Round grooves_,O _:t,, s ,s........ .;*It is normal for the surface of white or biscuit ceramic glass toappear to change color when surface cooking areas are hot. Asthe glass cools, it will return to its original color.Cleaning off the cooktop before and after each use will help keepit free from stains and provide the most even heating. Oncooktops with white or biscuit ceramic glass, soils and stainsmay be more visible, and may require more cleaning and care.Cooktop cleaner and a cooktop scraper are recommended. Formore information, see "General Cleaning" section.• Avoid storing jars or cans above the cooktop. Dropping aheavy or hard object onto the cooktop could crack thecooktop.• To avoid damage to the cooktop, do not leave a hot lid on thecooktop. As the cooktop cools, air can become trappedbetween the lid and the cooktop, and the ceramic glass couldbreak when the lid is removed.• For foods containing sugar in any form, clean up all spills andsoils as soon as possible. Allow the cooktop to cool downslightly. Then, while wearing oven mitts, remove the spillswhile the surface is still warm. If sugary spills are allowed tocool down, they can adhere to the cooktop and can causepitting and permanent marks.• To avoid damage to the cooktop, do not allow objects thatcould melt, such as plastic or aluminum foil, to touch any partof the entire cooktop.IMPORTANT: Do not leave empty cookware on a hot surfacecooking area, element or surface burner.Ideal cookware should have a flat bottom, straight sides, and awell-fitting lid and the material should be of medium-to-heavythickness.Rough finishes may scratch the cooktop. Aluminum and coppermay be used as a core or base in cookware. However, when usedas a base they can leave permanent marks on the cooktop orgrates.Cookware material is a factor in how quickly and evenly heat istransferred, which affects cooking results. A nonstick finish hasthe same characteristics as its base material. For example,aluminum cookware with a nonstick finish will take on theproperties of aluminum.Use the following chart as a guide for cookware materialcharacteristics.COOKWARE CHARACTERISTICSAluminum • Heats quickly and evenly.• Suitable for all types of cooking.• Medium or heavy thickness is best formost cooking tasks.Cast iron • Heats slowly and evenly.• Good for browning and frying.• Maintains heat for slow cooking.Ceramic or • Follow manufacturer's instructions.Ceramic glass • Heats slowly, but unevenly.• Ideal results on low to medium heatsettings.Copper • Heats very quickly and evenly.Earthenware • Follow manufacturer's instructions.• Use on low heat settings.• See stainless steel or cast iron.Porcelainenamel-on-steel or castironStainless steel Heats quickly, but unevenly.A core or base of aluminum or copperon stainless steel provides evenheating.When canning for long periods, alternate the use of surfaceburners between batches. This allows time for the most recentlyused areas to cool.• Center the canner on the grate.• Do not place canner on 2 surface burners at the same time.• For more information, contact your local agriculturaldepartment. Companies that manufacture home canningproducts can also offer assistance.8