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Hersteller: DeLonghi Dateigröße: 5.35 mb Dateiname: Unterrichtssprache:

Make sure that the room where the cooker will be installed has adequate ventilation, in conformity with the rules in force, so that the appliance can work correctly; then connect the cooker to the cylinder or gas pipe respecting the rules in force. The connection must be executed to the rear of appliance (left or right) (fig. 8.1); the pipe do not cross the cooker. The unused end inlet pipe of the cooker (left or right) must be closed with the plug interposing the gasket. The walls adjacent to the cooker must be of material resistant to heat. GAS TYPES The gases used for the operation of cooking appliances may be grouped by their characteristics into two types: Cat: II 2H3+ – NATURAL GAS (G 20) – L.P.G. (in cylinders) (G 30/G 31) Before installation, make sure that the local distribution conditions (type of gas and its pressure) and the adjustment of this appliance are compatible. The appliance adjustment conditions are given on the plate or the label. If the appliance must be operated with a gas different than that indicated on the plate, it is necessary to execute the following operations: – Gas connection. – Replacement of the top injectors. – Adjustment of the minimum of the top burners. For models with gas oven: – Substitution of the oven and grill injectors – Primary air of oven and grill burners – Adjustment of the oven burner minimum plug Fig. 8.1 Gas connection with rigid metal pipe or hose The cooker must be connected to the gas system using rigid metal pipes or continuous wall stainless steel hoses with threaded attachments, in conformity with standard with maximum length of 2000 mm. Be careful that metal hoses do not come into contact with movable or crushed parts. The sealing gasket must conform to standards. The connection with rigid metal pipes should not cause stresses to the gas inlet pipe. Fig. 8.2 Important: Always operate with 2 spanners (fig. 8.2). After connecting to the mains, check that the couplings are correctly sealed, using soapy solution, but never a naked flame. . G cylindrical gas connection Gasket Fig. 8.3 IMPORTANT: The gasket (fig. 8.3) is the element that guarantees the seal in the gas connection. It is recommended that it be replaced whenever it shows even the slightest deformation or imperfection. In particular we recommend: – That the connection with rigid metal pipes should not cause stresses to the gas inlet pipe. – That the hose does not come into contact with hot parts of the cooker at any point. – That the hose does not come into contact with cutting or sharp edges. – That the pipe should not be subject to twisting and tensile stress and that it should not have curves which are too tight or be squashed. – That the hose can be easily inspected along its length to check its state of wear. – We advise replacing the hose at its expiry date or on any sign of deterioration. – We advise replacing the gasket on the slightest sign of deformation or imperfection. – That the cylinder or piping tap is closed immediately upstream of the appliance whenever it is not being used. REPLACEMENT OF BURNER INJECTORS If the injectors are not supplied they can be obtained from the “Service Centre”. Select the injectors to be replaced according to the “Table for the choice of the injectors”. The nozzle diameters, expressed in hundredths of a millimetre, are marked on the body of each injector. To replace the injectors proceed as follows: - Remove pan supports and burners from the cooktop. - Using a wrench, substitute the nozzle injectors “J” (fig. 8.4, 8.5) with those most suitable for the kind of gas for which it is to be used. The burners are conceived in such a way so as not to require the regulation of the primary air. J J Fig. 8.5 Fig. 8.4 Adjusting of the minimum of the top burners The burners in the cooktop are fitted with safety valves; the minimum flame regulation screw is located on the outside of the gas tap (fig. 8.6). In passing from one type of gas to another, the gas flow must also be changed, considering that in this position the flame must have a length of about 4 mm and must remain lit even with a brusque passage from the maximum position to that of minimum. The flame adjustment is done in the following way: – Turn on the burner – Turn the tap to the MINIMUM position – Take off the knob – With a thin screwdriver pass by the hole of microswitch and turn the screw F until adjustment is correct (fig. 8.6). Normally for G 30/G 31, tighten up the regulation screw. F Fig. 8.6 TABLE FOR THE CHOICE OF THE INJECTORS Air vent necessary for gas combustion = (2 m3/h x kW) BURNERS Air vent necessary [m3/h] Auxiliary (A) 2 Semirapid (SR) 3,5 Rapid (R) 6,0 Triple ring (TR) 7,0 Oven 7,4 Grill 5,0 Cat: II 2H3+ BURNERS NOMINAL POWER [kW] REDUCED POWER [kW] G30/G31, 28-30/37 mba G30 20 mba O injector [1/100 mm] Tube ring opening [mm] O injector [1/100 mm] Tube ring opening [mm] Auxiliary (A) 1,00 0,30 50 - 72 (X) - Semirapid (SR) 1,75 0,45 65 - 97 (Z) - Rapid (R) 3,00 0,75 85 - 115 (Y) - T...

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