Electrical Operation; Component Function - Vulcan-Hart ERA Series Service Manual

ERA & EBD SERIES ELECTRIC FRYERS - ELECTRICAL OPERATION

COMPONENT FUNCTION

Cooking Control . . . . . . . . . . . . . . Monitors and evaluates input signals to the control: Activates heat output
Transformer . . . . . . . . . . . . . . . . . Supplies 24VAC to the cooking control circuit. Transformer is energized
Power Switch . . . . . . . . . . . . . . . . Supplies power to control circuit for fryer operation and filtering.
Melt Select Switch . . . . . . . . . . . . Controls heating circuit operation during melt cycle based on type of
High Limit Thermostat . . . . . . . . . Prevents the shortening from reaching temperatures over 450EF. (Manual
Temperature Probe . . . . . . . . . . . Senses temperature of shortening. Converts the temperature into a
Drain Valve Interlock
Switch (DVI) . . . . . . . . . . . . . . . . . A magnetic reed switch mounted on the manual drain valve that supplies a
Tilt Switch . . . . . . . . . . . . . . . . . . . A magnetic reed switch (N.O.) mounted underneath the element head
1CON, 3CON and 2CON,
4CON Contactors . . . . . . . . . . . . . Supplies line voltage to heating elements.
Heating Elements . . . . . . . . . . . . . Produces heat that is transferred to the shortening.
R1 Heat Relay . . . . . . . . . . . . . . . . Supplies power to 2CON and 4CON contactor coils.
R2 Power Relay . . . . . . . . . . . . . . Supplies power to cooking control.

ELECTRICAL OPERATION

FRYER CONTROLS
signal to maintain shortening temperature; and activates filter output signal
to power the fill solenoid valve.
when power switch is turned on.
shortening being used (liquid/ solid).
reset)
resistance which is monitored by the cooking control. The probe is an RTD
(resistance temperature device) of the Thermistor type. As temperature
increases the resistance value decreases.
drain valve position signal (open/closed) to the cooking control. When drain
valve is open, the drain interlock input to the control is removed (magnetic
reed switch contacts open). This prevents heating elements from being
energized with the fry tank empty.
assembly. Remove power from 1CON and 3CON to de-energize the
heating elements when the elements are raised.
Page 17 of 32 F25385 (May 2010)