7OperationBurner minimum m a x i m u mdiameter diameterTriple-crown (ultra-rapid) 160 mm 260 mmLarge (rapid) 160 mm 240 mmMedium (semi-rapid) 120 mm 220 mmSmall (auxiliary) 80 mm 160 mmAs soon as a liquid starts boiling, turn down the flame so that it willbarely keep the liquid simmering.If you use a saucepan which is smaller than the recommended size, theflame will spread beyond the bottom of the vessel, causing the handle tooverheat.Take care when frying food in hot oil or fat, as the overheated splashescould easily ignite.If the control knobs become difficult to turn, please contact your local ServiceForce Centre.Hob burners control knobsThe symbols on the knobs mean that :z there is no gas supplythere is maximum gas supplythere is minimum gas supplyLighting the burnersFor easier lighting, proceed before putting a pan on the pan support.To light a burner, turn the relevant knob anticlockwise to maximum position( ), then push it down to ignite the burner. Upon ignition, adjust the flameas required.If the burner does not ignite, turn the control knob to zero, and try again.When switching on the mains, after installation or a power cut, it is quitenormal for the spark generator to be activated automatically.In the event of a power failure the burners can still be lit using a match orbattery operated sparker. In this case, put a lit match or sparker to thedesired burner. Push the relevant control knob down and turn it anti-clockwiseuntil it reaches the “maximum” position. The burner should now light.Using the Wok StandA wok stand is provided to enable you to usea round bottomed wok on the hob. The wokstand must only be used on the central burner,and should not be used with any other type ofwok or pan. When fitting the wok stand, ensurethe recesses in the frame fit securely onto thebars of the pan supports, as shown in thediagram.