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SERVICE MANUAL
ICM24,36,48,60 AND 72 CHEESE MELTERS
MODEL NO.
ICM24 ML-52470, 52476
ICM36 ML-52471, 52477
ICM48 ML-52472, 52478
ICM60 ML-52473, 52479
ICM72 ML-52474, 52480
MODEL ICM
VULCAN-HART COMPANY, P.O. BOX 696, LOUISVILLE, KY 40201-0696, TEL. (502) 778-2791
FORM 30915 (3-95)
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IMPORTANT FOR YOUR SAFETY THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL GAS EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD START-UP AND ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL. POST IN A PROMINENT LOCATION THE INSTRUCTIONS TO BE FOLLOWED IN THE EVENT THE SMELL OF GAS IS DETECTED. THIS INFORMATION CAN BE OBTAINED FROM THE LOCAL GAS SUPPLIER. IMPORTANT IN THE EVENT A GAS ODOR IS DETECTED, SHUT DOWN UNITS AT MAIN SHUT-OFF VALVE AND CONTACT THE LOCAL GAS COMPANY OR GA
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TABLE OF CONTENTS Important safety information page 2 Codes and standards information page 3 Manual use information page 3 Data plate information page 3 Tools required for servicing page 3 General appliance information age 3 Section l Service Checks and Adjustments page 4-5 Section ll Removal of Service Parts page 6-10 Section lll Trouble Shooting page 11 CODES AND STANDARDS Vulcan-Hart Cheese Melters are to be installed in accordance with state and local codes, or in the absence of local codes,
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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 1 If the gas supply piping is to be tested at a test pressure in excess of ⁄2 psig(3.45Kpa), the appliance and its individual shut-off valve must be disconnected from the supply line. If the
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PILOT ORIFICE HOOD CHECK 1. Follow steps 1-3 under Removal of Lighter Tube. 7 2. With a ⁄16" wrench remove the orifice hood. 3. Examine the hood and orifice opening for blockage. 4. If blockage is found, remove it using air or water pressure. 5. If blockage cannot be removed, replace the orifice hood. 6. Reinstall or replace orifice hood by reversing steps 1-2 above. BURNER NOZZLE ORIFICE CHECK Perform this procedure only after the pilot tube and burner orifice have been checked for blockages. 1
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SECTION II REMOVAL OF SERVICE PARTS WARNING: SHUT OFF GAS BEFORE SERVICING. REMOVAL OF TOP 1. Push top back towards wall until the rear top mounting foot hits the stop angle. (Fig. 2) STOP ANGLE REAR MOUNTING FOOT Fig. 2 2. Be sure that the top mounting foot has cleared the front top flange and lift the top off of the appliance. (Fig. 3) Fig. 3 — 6 —
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REMOVAL OF BURNER VALVE 1. With a small blade screwdriver loosen the set screw in the valve knob and remove the knob. 2. With a phillips head screwdriver remove (4) screws at each corner of the front panel and remove the panel. (Fig. 4) PILOT ADJUSTMENT HOLE Fig. 4 5 3. With a ⁄8" wrench disconnect the elbow compression fitting. (Fig. 5) Fig. 5 — 7 —
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4. Disconnect the valve from the manifold pipe. (See Fig. 5) NOTE: It may be necessary to remove heat shield to disconnect the valve. 5. Install new valve using pipe dope and reversing steps 1-4. REPLACEMENT OF PILOT ADJUSTMENT VALVE 1. Follow steps 1 and 2 under Removal of Burner Valve. 1 2. Disconnect the compression nut from the pilot tube with ⁄2" wrench. (Fig. 6) Fig. 6 3. Disconnect the pilot valve from the manifold pipe. (Fig. 7) Fig. 7 — 8 —
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4. Install new pilot valve using pipe dope and reversing steps 1-3. REMOVAL OF BURNER 1. Follow steps 1-2 under Removal of Top. 7 2. With a ⁄16" wrench remove (2) nuts. (Figs. 8) Figs. 8 3. Lift the burner mounting bracket off the appliance. (Figs. 8) 4. Slide the burner towards the center of the appliance and off the burner nozzle. (Figs. 9) 5. Install new burner by reversing steps 1-4. Figs. 9 — 9 —
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BURNER NOZZLE REPLACEMENT 1. To remove the burner nozzle follow steps 1, 2 and 3 under Burner Nozzle Orifice Check. (Fig. 10) Fig. 10 2. Install new nozzle by reversing steps 1, 2, and 3 under Burner Nozzle Orifice Check. — 10 —
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REMOVAL OF PILOT LIGHTER VALVE 1. Follow steps 1-3 under Removal of Pilot Lighter Tube. 1 2. With a ⁄2" wrench disconnect valve fitting from the pilot tube. (Figs. 11) TUBE MOUNTING STUD & BRKT. VALVE FITTING PILOT TUBE LIGHTER TUBE HOLDING NUT Figs. 11 3. Install new valve fitting and ferrule by reversing steps 1 and 2 above. REMOVAL OF PILOT LIGHTER TUBE 3 1. With a ⁄8" wrench remove (1) nut holding the lighter tube to the mounting bracket assembly. (See Figs. 11) 2. Pull lighter tube off of t
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SECTION lll TROUBLE SHOOTING Uneven heating, sides burning A) Temperature too low. B) Improper operation of broiler. C) Fluctuating gas pressure. To much top heat A) Temperature too high. B) Faulty ventilation. C) Excessive heat input. D) Overrated (pressure too high or orifice too large). . Uneven heat side to side A) Appliance not level side to side. B) Burner is improperly installed. Uneven heat front to back A) Appliance not level front to back. Dried out products A) Melting time is too long
