Control system for frying apparatus

A control circuit for pyrolytic cleaning of heating elements in a cooking system comprising:

• a power supply;
• a first actuable relay connecting the power supply to the heating elements;
• a timer for actuating and deactuating the first relay to alternately connect and disconnect the heating elements with the power supply to gradually raise the temperature of the elements, including an actuable thermal unit for emitting heat when the first relay is deactuated, and a thermal heat switch responsive to the heat of the thermal unit to actuate the first relay when the temperature of the thermal unit rises above a predetermined value and to deactuate the first relay when the temperature of the thermal unit drops below the predetermined value;
• a second actuable relay connected in series with the first actuable relay;
• and
• a thermal switch controlling the second actuable relay and responsive to the temperature of the heating elements to deactuate the second relay and disconnect the power supply from the heating elements when the elements reach a predetermined temperature.

Control circuitry for pyrolytic cleaning of heating elements in a cooking system, comprising:

• a power circuit including a power source, first switch means for connecting the power source to the heating elements and a switch sensitive to the temperature of the heating elements to open the first switch means and disconnect the power source when the heating elements reach a predetermined temperature;
• a heating circuit adapted for selective connection to the power circuit and including second switch means in series with the first switch means for connecting the power source to the heating elements when the power circuit is connected to the heating circuit;
• a time delay circuit adapted for selective connection to the power circuit and including cyclic control means actuated when the power circuit is connected to the time delay circuit and deactuated when the power circuit is connected to the heating circuit;
• and
• timing switch means having time delay response to the actuation and deactuation of the cyclic control means for connecting the power circuit alternately with the heating circuit and the time delay circuit.