ELECTRICAL OPERATION
COMPONENT FUNCTION
Temperature Control ... Controls griddle surface temperature for the individual heat zone by monitoring
thermocouple input (K type ).
Temperature Probe ... Senses griddle surface temperature for the heat zone using a K type thermocouple.
Provides input to the temperature control.
Power Switch ........ Controls power to all electrical components (single solenoid valve, temperature control
and ignition module) (SPST switch).
Indicator Light ....... When brightly lit, the light indicates temperature control is calling for heat (internal
contacts closed) and ignition module output from pin 2 is on. Dual solenoid valve is
energized (burner on).
The light will be dimly lit after the pilot burner is on.
The light is off during trial for ignition (pilot lighting) or when the pilot safety circuit is not
satisfied (pilot not lit).
Ignition Module ...... Controls and monitors gas heating. Generates spark to light gas at the pilot burner,
monitors the presence of flame and energizes the dual solenoid valve upon a call for heat
from the temperature control (continuous try module).
Ignitor/Flame Sense
Electrode .............
Ignites pilot burner and senses the presence of a flame. The Ignitor/Flame Sense is a
component of the pilot burner.
Single Solenoid Valve ...Controls gas to pilot burner. Single solenoid valve is energized when power switch is on.
Depending on the width of the griddle, there may not be a single solenoid valve. The
solenoid valve used to control gas flow to the pilot burner may be one of the dual solenoid
valves. Valves that control gas flow to the pilot burner have an adjustment screw for pilot
flame height at the output on the valve body.
Dual Solenoid Valve(s) ...Controls gas to burner. Dual solenoid valve is energized by the ignition module after pilot
safety circuit is established (pilot lit) and temperature control is calling for heat. Depending
on the width of the griddle, the dual solenoid valve can be used to control gas flow one
of the main burners along with the pilot pilot burner.
SEQUENCE OF OPERATION
Operation is the same for all griddle models. Each 12"
heat zone on the griddle plate has its own temperature
controller, indicator light and ignition system
components. Refer to the wiring diagram for the model
being serviced.
• 24" GRIDDLE - WIRING DIAGRAM
• 36" GRIDDLE - WIRING DIAGRAM
• 48" GRIDDLE - WIRING DIAGRAM
• 60" GRIDDLE - WIRING DIAGRAM
1. Conditions.
A. 120VAC connected to griddle and is
properly grounded.
B. Incoming neutral line (L2) is connected to
power switch terminal 3 (non switching) and
jumpered to one side of single solenoid
valve; and each temperature controller at
terminals - L2 and com; and each ignition
module at pin 3.
C. Incoming hot line (L1) is connected to power
switch terminal 2.
D. Power switch OFF (SPST).
E. Temperature dials at lowest setting.
F. Griddle temperature below 150°F.
G. Gas supply on.
2. Turn power switch ON - 120VAC applied to the
following components:
NOTE: Temperature control terminal L1 (hot) and
ignition module pin 4 (hot) are "jumpered" between
RRG SERIES HEAVY DUTY GAS GRIDDLE - ELECTRICAL OPERATION
F45514 (0214) Page 18 of 24
