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N.B. When the hob is not being used, set the gas knobs to their closed positions and also close the cock valve on the gas bottle or the main gas supply line. Figure 5 LIGHTING THE BURNERS In order to light the burner, you must: 1 – Press in the corresponding knob and turn counter-clockwise to the full flame position marked by the symbol (fig. 6) and hold the knob in until the flame has been lit. In the case of a mains failure light the burner with a match or lighted taper. 2 – Wait about ten sec