Vulcan-Hart ICM72 Section Service Checks And Adjustments, Warning Shut Off Gas Before Servicing

SECTION I

SERVICE CHECKS AND ADJUSTMENTS

WARNING: SHUT OFF GAS BEFORE SERVICING

VENTILATION CHECKS

Insure that adequate ventilation has been provided in accordance to all codes as stated on page 3 of this manual.

The vent for this appliance should be checked for restrictions every 6 months.

GAS SUPPLY CHECKS

If the gas supply piping is to be tested at a test pressure in excess of 1⁄2 psig(3.45Kpa), the appliance and its individual shut-off valve must be disconnected from the supply line. If the gas supply piping system is to be tested at a pressure equal to or less than 1⁄2 psig(3.45Kpa), the individual shut-off valve must be closed during testing.

REGULATOR VENT CHECK

1.With a screwdriver pry the plastic vent plug form the top of the regulator. (See Fig. 1)

2.Check vent for clogging of the breather vent screen. If screen is obstructed, clear the obstruction.

STORE LINE GAS PRESSURE CHECK

1.Turn main gas line off.

2.Tap the store line before the pressure regulator if a gas pressure tap and plug have not been supplied.

3.Install a single pilot valve fitting or similar device that will allow a gas pressure gauge to be connected to the store line.

4.Connect the gas pressure gauge to the tapped valve device.

5.Turn the store main gas on.

6.Turn the unit gas on.

7.Take the store pressure reading. Store pressure should be at least 6" W.C. for natural gas and 11" W.C. for propane gas.

8.If store pressure is not correct advise owner that the gas line pressure must be serviced for proper gas flow before appliance service can be performed.

9.If store pressure is correct, continue checking by performing the appliance gas line check.

APPLIANCE GAS LINE CHECK

1.Turn appliance gas off.

2.Remove the burner knobs.

3.With a phillips head screwdriver remove (4) screws securing the front cover to the cheese melter.

4.From the front right side of the appliance follow the gas pipe to the gas line pressure tap.

5.Connect the gas meter to the line pressure tap.

6.Reinstall the burner knob handle and turn the appliance gas on.

7.Check the appliance pressure. Reading should be 5" W.C. for natural gas and 10" W.C. for propane gas.

PILOT LIGHTER TUBE CHECK

1.Follow steps 1-3 under Removal of Pilot Lighter Tube.

2.Check tube flame ports for blockage. If blockage is found, blow blockage out with water or air pressure device. If these are not available try removing blockage with a small probing device. Do not force probe device of a larger diameter through the port openings.

3.If blockage cannot be removed, replace the lighter tube.

4.To reinstall or replace lighter tube follow steps 1-3 under Removal of Pilot Lighter Tube in reverse order.

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