Applies to:
Electric Heat Theory of Operation
The F5 electric heat system uses electrical power applied through a heating element to raise the cooking oil temperature when demanded by a user and the control system. Incoming to the electric heat system is three-phase electrical power, safety circuit checks, and temperature probe readings. Outputs of the electric heat system are 24 volts DC to safety and heat contactor coils, three-phase electrical power to the heating element, and heating of the cooking oil. The F5 electric heat system consists of:
Inputs
Three-phase electrical power to safety contactor
PMU safety circuits
Oil temperature RTD probe readings first by each PMU
Outputs
24 volts DC to safety contactor coil when main power switch is toggled ON
Three-phase electrical power to heat contactor
24 volts DC to heat contactor coil when control system demands heat
Three-phase electrical power to the heating element
Heating of cooking oil
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