Whilst this is a photo copy, and some of the pages are a little askew, it was all readable and intact. A real bonus finding an old manual for a classic piece of kit that no other site had.
Text excerpt from page 6 (click to view)
HOB BURNERS To light a burner, turn the relevant knob anticlockwise to maximum position and then depress the ignition pushbutton marked by a small electric spark symbol. Then adjust the flame as required. To ensure maximum burner efficiency, it is strongly recommended that you use only pots and pans with a bottom fitting the size of the burner used, so that flame will not spread beyond the bottom of the vessel. It is also advisable, as soon as a liquid starts boiling, to turn down the flame so that it will barely keep the liquid simmering. IMPORTANT Be very careful when frying food in hot oil or fat, as the overheated splashes could easily ignite. IMPORTANT If the control knobs become difficult to turn, please contact your local Zanussi Service Centre. Safety Cut Off The models ZBG 501 B and ZBG 501 W are equipped with a safety cut off device which totally interrupts the gas supply to the hob burners by lowering the hob lid. By lifting up the lid, the gas supply is restored. Light the flame by depressing the ignition push button and remember to turn the gas control knobs to the off position.
MAINTENANCE AND CLEANING
Before any maintenance or cleaning can be carried out, you must DISCONNECT the appliance from the electricity supply. Cleaning your Gas Hob The hob is best cleaned whilst it is still warm, as spillage can be removed more easily if it is left to cool. The pan supports and burner crowns can be lifted off for cleaning. Use hot detergent water and remove stubborn marks with a mild paste cleaner. A well moistened soap impregnated steel wool pad can be used
with caution, if the marks are particularly diffucult to remove. The burner crown may loose its matt sueface after several cleanings but this will no way impair its function. After cleaning, be sure to wipe dry with a soft cloth. The pan supports are dishwasher proof. If washing them by hand, take care when drying as the enamelling process occasionally leaves rough edges.