17Safety and energy-saving adviceFor a correct use of the hobTo ensure maximum burner efficiency and lowergas consumption, you should only use pots andpans with a flat bottom fitting the size of theburner used (see table).If you use a saucepan which is smallerthan the recommended size, the flamewill spread beyond the bottom of thevessel, causing the handle to overheat.Pots must never be placed onto thecontrol zones.Always turn the flame down or offbefore removing pots from the burners.Take care when frying food in hot oilor fat, as the overheated splashes couldeasily ignite.For an easier ignition of the burner, lightit before placing the pan on the pansupport.Unstable or misshapen pans should notbe used on the hob as unstable pans cancause an accident by tipping or spillage.It is advisable to cook with lids on.By using a pressure cooker you will obtainfurther energy-saving and shortercooking times.As soon as a liquid starts boiling, turndown the flame so that it will barely keepthe liquid simmering.Avoid cooking with potstones,earthenware pots or cast iron plates.Also, avoid using aluminiun foil forprotecting the top during operation.Burner diameter diametermin. max.Large (rapid) 160 mm 240 mmMedium (semirapid) 120 mm 220 mmSmall (Auxiliary) 80 mm 160 mm