Service-Manual, new version author: Chr. Fuchs 17.06.99 / INDUCS Ltd. 18.09.03 page 6 of 28On the power board, a main filter for the interference suppression is integratedCertificationsSatisfies the latest specifications: VDE EN 60335-1/-2/36, UL 197; CAN/CSA/C 22.2 No.109, SSF 4-1996, CE-compliant.ConstructionsThe cookers are made of stainless steel (CNS 1.4301). The case is sealed. The mountingof the vitrocerame as well as of the ceramic bowl is done with screws.3 Functioning3.1 Adjusting the performance rateThe performance rate is adjusted by the potentiometer (control knob). The inductiveperformance is depending on the position of the potentiometer: Position 1 = minimumpower, Position 10 = maximum power.3.2 Checking the temperatureInduction coilThe temperature of the induction coil is checked by a temperature sensor. If the coil isheated over the maximum power, the heating process is stopped. As soon as the coil hascooled down, the Induction unit may be re-started. Turn the position of the kontrol knob on„0“ and then on the desired power.Power boardThe temperature of the power board is checked by a temperature sensor. As soon as theheat sink is heated over 55ºC/130ºF, a cooling fan is started. Temperatures of the heatsinks of more than 70ºC/ 160ºF will reduce automatically the checking of the power in orderto keep the induction cooker working under normal conditions.PrintThe temperature of the print is checking the ambient temperature of the appliance. As soonas the temperature is higher than the programmed value the heating process is stopped. Itcan be re-started as soon as normal conditions are reached.3.3 Protection overload currentDetecting inapproriate pan material or magnetic objects on the heating area, the current inthe induction coil may be essentially raised. In order to protect the power board,the current in the coil is checked. As soon as the current in the coil exceeds the tolerance,the generator is blocked and there is no further aktive exchange of energy. He will be re-started as soon as normal working conditions are reached.