Vulcan Heavy Duty Gas Griddle ASA72

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

Turn all thermostats to off position

Loosen set screw securing thermostat knobs

Remove screws securing front panel to griddle

Pull front panel forward and lay aside

If servicing a 900RX, lay front panel face down in front of unit

Check line-of-sight through the front panel to see both pilot burners and griddle burners

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

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

Shut off the gas before servicing the unit and follow lockout / tagout procedures

Measure distance between manifold pipe and valve for reassembly later

Disconnect all gas lines and thermocouple from valve

Transfer fittings from old valve to new valve

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

Thermostat Setting and Stabilization

Set thermostats to 350°F and allow to stabilize

Temperature Recording and Calculation

Record the temperature tester readouts for each zone for 3 cycles

Calculate total average temperature for each zone

Is the temperature within 350°F ±15°F?

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

Shut off the gas before servicing the unit and follow lockout / tagout procedures

Remove screw securing pilot assembly bracket from underneath the front of the griddle

Carefully lift to disengage bracket from slot and work assembly down to access parts

Center pilot in flash tube opening and align ignition ports with both sides of flash tube