Fig. 25
2. Verify gas orifice hood is correct for the altitude.
See Parts Catalog for Orifice Hood Chart.
THERMOCOUPLE TEST
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Access TEMPERATURE CONTROLLER.
2. Remove thermocouple connections from
temperature controller.
Fig. 26
3. Check the thermocouple for resistance.
A. If meter reads an overload (OL) condition
(open), or zero ohms (short) replace the
thermocouple and check temperature
controller for proper operation.
4. If resistance is measured, thermocouple is good.
TEMPERATURE CONTROLLER
TEST
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Access the TEMPERATURE CONTROLLER.
2. Connect power to the machine.
3. Turn on the power switch.
4. Verify temperature controller is receiving
120VAC at terminals L1 & L2, polarity is correct
and machine is properly grounded.
Fig. 27
5. Set temperature dial to 350°F.
6. Verify indicator light comes on and burner lights.
A. If heat light and main burners come on but
turn off within 10 seconds, Perform
THERMOCOUPLE TEST .
NOTE:
Temperature controller will de-energize
internal relay if the circuitry detects an open
thermocouple.
B. If heat light and main burners do
not
come
on, verify internal relay contacts are
operating properly. Check for 120VAC dual
solenoid valve.
RRG SERIES HEAVY DUTY GAS GRIDDLE - SERVICE PROCEDURES AND ADJUSTMENTS
Page 15 of 24
F45514 (0214)
