ELECTRICAL OPERATION
COMPONENT DESCRIPTION | SEQUENCE OF OPERATION |
Power Switch ON/OFF – Switch turns power ON or OFF.
Ignition Control Module – Provides ignition spark. Turned on when ON/OFF switch is set to the ON position and turned off when flame switch closes.
Burner On Lights – Illuminates to indicate burner is turned on.
Thermostats – Turns burner on and sets operating temperature.
Flame Switch – When the flame switch is heated by the pilot the switch contacts close and turn on the single and/or dual burner solenoids.
Gas Valve (Single Solenoid) – Contains one valve. The valve controls a single burner. The solenoid is turned on when the ON/OFF switch is in the ON position and the corresponding thermostat is rotated out of the OFF position. When the solenoid is turned on (operated) gas flows to the burners.
Gas Valve (Dual Solenoid) – Contains two valves. Each valve controls a separate burner. Solenoids are turned on when the ON/OFF switch is in the ON position and the corresponding thermostat is rotated out of the OFF position.
Pilot Gas Valve (Single Solenoid) – Contains one valve. The valve controls the gas to the pilot. The solenoid is turned on when the ON/OFF switch is in the ON position and turned off when the flame switch closes.
Operation of all size griddles is the same. The following discussion is for the 48” griddle. This griddle has four thermostats, two flame switches, two dual solenoids and one pilot solenoid.
The neutral wire from the power source is directly connected to the following terminals:
•A terminal on each thermostat
•The N terminal on each ignition module
•One terminal on the pilot solenoid
When the power ON/OFF switch is set to the ON position, voltage is applied to the following terminals:
•Terminal L1 on each ignition module turning the module on
•One side of each flame switch
•The remaining terminal on the pilot solenoid energizing the solenoid
The ignition module which is now connected across the power lines turns on and provides the voltage for the ignition spark. The pilot valve solenoid is energized allowing gas to flow to the pilot where it is ignited by the spark. The pilot flame heats up the flame switch. When the flame switch is sufficiently hot, the switch closes. The voltage through the flame switch is applied to one side of each burner solenoid and one side of the burner ON light.
When the pilot flame is sensed, the ignition module will shut off automatically.
When a thermostat is rotated out of the OFF position the neutral return wire is connected to the other side of the burner light causing the light to be illuminated. At the same time the neutral is connected to the other side of the burner solenoid causing the solenoid to operate and allowing gas to flow to the burner.
F35628 | — 12 — |