Vulcan Heavy Duty Gas Griddle 948RX

Ensure the burner is turned off and cool before starting the adjustment

Loosen the screw on the venturi

Adjust the air shutter to eliminate yellow tips on the burner flames

Lock the air shutter in place by tightening the screw

Repeat the adjustment procedure for all burners

Verify that all burners have a proper blue flame without yellow tips

Unscrew thermocouple fitting from safety valve

Install thermocouple test adapter finger tight plus a quarter turn

Install thermocouple into test adapter finger tight plus a quarter turn

Set VOM to DC millivolt scale and connect (+) meter lead to pin on thermocouple adapter and (-) meter lead to thermocouple

Verify that thermocouple is sufficiently immersed in flame. Adjust pilot valve to allow more gas flow if necessary

Allow pilot to burn for 3-4 minutes to stabilize voltage output from thermocouple

Verify thermocouple output voltage

Enter the measured thermocouple output voltage (in millivolts)

WARNING! Disconnect the electrical power to the machine and follow lockout / tagout procedures

Label and disconnect wires from power switch

Squeeze switch retainers and slide switch out through front of panel

Install the new switch in reverse order

Check that all wires are securely connected

Verify the functionality of the new power switch

Shut off the gas before servicing the unit

Follow lockout / tagout procedures

Disconnect gas supply at griddle

Remove screws securing back panel to griddle

Check all gas joints disturbed during servicing for leaks using a soap and water solution

Observe temperatures at the center points of the cooking zones using a Surface Probe temperature measurement device

Ensure not to use infrared thermometers due to sensitivity issues

Thermostat Setting and Stabilization

Set thermostats to 350°F and allow to stabilize

Temperature Recording and Calculation

Record temperature tester readouts for each zone for 3 cycles

Calculate total average temperature for each zone