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Vulcan-Hart ML-052214 manual

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Table of contents for the manual

  • Page 1

    VULCAN-HART COMPANY, P.O. BOX 696, LOUISVILLE, KY 40201-0696, TEL. (502) 778-2791 – NOTICE – This Manual is prepared for the use of trained Vulcan Service Technicians and should not be used by those not properly qualified. If you have attended a Vulcan Service School for this product, you may be qualified to perform all the procedures described[...]

  • Page 2

    – 2 – TABLE OF CONTENTS GENERAL ............................................................................................................................... ................................. 4 Introduction ............................................................................................................................... .........[...]

  • Page 3

    – 3 – Gas Valves, Tubing, Thermostats, Regulators and Solenoids .................................................................... 1 8 Burner Manifold Assembly (GHCB40) ................................................................................................. 1 8 Burner Manifold Assembly (GHIR44) .......................................[...]

  • Page 4

    – 4 – SPECIFICATIONS Gas Data Model Dimensions No. of Total Burners BTU Width Depth Height per /hr Section GHCB40 34” 39 1 / 8 ” 79” 4 100,000 GHCB44 34” 39 1 / 8 ” 79” 4 100,000 GHMCB44 3 4 ” 39 1 / 8 ” 57 ” 4 100,000 HCB1 36 ” 38 3 / 8 ” 68 ” 4 50,000 HCB2(B) 3 6” 38 3 / 8 ”8 0 1 / 2 ” 4 100,000 IR1 36 ” 38 3 /[...]

  • Page 5

    – 5 – IMPORTANT STOP BOLTS MUST BE IN POSITION FOR SAFE OPERATION OF GRID. IF DAMAGED OR MISSING, REPLACE AT ONCE. DO NOT OPERATE GRID WITHOUT BOLTS. Two (2) broiler grid 1/4-20 stop bolts and nuts are supplied with each broiler grid to ensure that the grid is not accidentally pulled completely from the broil section while hot. One (1) stop bol[...]

  • Page 6

    – 6 – REMOVAL AND REPLACEMENT OF PARTS COVERS, PANELS AND HANDLES Burner Box Cover (GHCB40, GHCB44, GHIR44) WARNING: SHUT OFF THE GAS BEFORE SERVICING. 1 . Open the augratin oven door. 2. Remove the oven rack. 3. Remove the four screws and bushings from the oven. 4 . Remove the augratin oven bottom assembly as outlined in Augratin Oven Bottom A[...]

  • Page 7

    – 7 – Manifold Cover Assembly (GHCB40 & GHIR44) WARNING: SHUT OFF THE GAS BEFORE SERVICING. 1. Remove the grease tray from the broiler (GHCB40 only). NOTE: The GHIR44 manifold cover assembly has a chain to protect switch wiring. 2. Loosen the mounting screw in each burner knob. 3. Remove the two burner knobs from the broiler. 4. Remove the [...]

  • Page 8

    – 8 – Control Panel Cover (GHCB40) 1 . Remove the manifold cover assembly as outlined in Manifold Cover Assembly. 2. Loosen the retaining screw and remove the burner knob from the broiler. 3. Pull the thermostat knob to remove it from the broiler. 4 . Remove the bolt and the control panel cover from the broiler. 5. Reverse the procedure to inst[...]

  • Page 9

    – 9 – Oven Bottom Assembly (GHCB40) WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1. Remove the lower front panel as outlined in Covers, Panels and Handles. 2. Open oven door. 3. Remove rack if nece[...]

  • Page 10

    – 10 – Augratin Oven Bottom Assembly (GHCB40) WARNING: ALL GAS JOINTS DISTURED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1. Remove the four screws and brass bushings from the broiler. 2. Slide the augratin oven bottom assembly from the broiler. 3 . Remove the augratin ove[...]

  • Page 11

    – 11 – 2. Remove two screws and the oven door handle from the oven door. 3. Reverse the procedure to install. BROILER GRID TRAY (ALL MODELS) WARNING: SHUT OFF THE GAS BEFORE SERVICING. 1. Allow the broiler grids to cool. 2. Remove the two broiler grids from the broiler grid tray. 3. Remove two stop bolts and nuts from the broiler. 4. Carefully [...]

  • Page 12

    – 12 – 4. Remove the grid handle from the grid arm lifting assembly. 5. Remove two bolts, six washers and two nuts from the grid arm lifting assembly and the grid carriage assembly. 6. Remove the grid arm lifting assembly from the grid carriage assembly and the broiler. 7. Remove the four cotter pins and bolts (two each side) from the lever arm[...]

  • Page 13

    – 13 – BURNER ASSEMBLY GHCB40 & HCB2(B) WARNING: SHUT OFF THE GAS BEFORE SERVICING. 1. Remove the burner ceramics as outlined under Burner Ceramics. 2. Remove burner box cover as outlined in Controls, Panels and Handles. 3. Allow the burner assembly to cool. 4. Lift the rear of the burner assembly and remove it from the broiler. CAUTION: Ma[...]

  • Page 14

    – 14 – HEAT SHIELD (GHIR44) WARNING: SHUT OFF THE GAS BEFORE SERVICING. 1. Remove burner assemblies as outlined in Burner Assembly. 2. Remove the cotter pin from the shaft of the heat shield. 3. Remove the heat shield from the broiler. 4. Reverse the procedure to install. PILOT ELBOW NOZZLE WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: A[...]

  • Page 15

    – 15 – 4. Disconnect the burner tubing fitting from the sub-manifold assembly. 5. Loosen the two nuts on the sub-manifold assembly and the brackets. 6. Remove the sub-manifold assembly from the broiler. 7. Reverse the procedure to install. GHIR44 1. Remove the manifold cover assembly as outlined in Covers, Panels and Handles. 2. Disconnect the [...]

  • Page 16

    – 16 – 5. Loosen the two nuts on the burner sub- manifold. 6. Remove the burner sub-manifold from the broiler. 7. Reverse the procedure to install. PILOT MANIFOLD (GHIR44) WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT[...]

  • Page 17

    – 17 – OVEN BURNER ASSEMBLY (GHCB40) WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1. Remove the oven bottom assembly as outlined in Covers, Panels and Handles. 2. Lift and remove the oven burner as[...]

  • Page 18

    – 18 – GAS VALVES, TUBING, THERMOSTATS, REGULATORS AND SOLENOIDS Burner Manifold Assembly (GHCB40) WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1. Remove the manifold cover assembly as outlined in [...]

  • Page 19

    – 19 – Burner Manifold Assembly (GHIR44) WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1. Remove the manifold cover assembly as outlined in Covers, Panels and Handles. 2. Disconnect the drop pipe fr[...]

  • Page 20

    – 20 – 2. Disconnect the oven burner valve from the oven gas supply tube and the union. 3. Reverse the procedure to install. Pilot Outage Protection Valve (GHCB40) WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN [...]

  • Page 21

    – 21 – 6. Remove the two bolts from the pilot outage protection valve and the bracket. 7. Disconnect the pilot outage protection valve from the union and the thermostat. 8. Remove the pilot outage protection valve and the ignitor wire from the broiler. 9. Reverse the procedure to install. Thermostat (GHCB40) WARNING: SHUT OFF THE GAS BEFORE SER[...]

  • Page 22

    – 22 – Oven Burner Nozzle (GHCB40) WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1. Remove the oven burner cover as outlined in Covers, Panels and Handles. 2. Disconnect the oven burner tubing from [...]

  • Page 23

    – 23 – Burner Valve (GHIR44) WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1. Remove the manifold cove[...]

  • Page 24

    – 24 – Regulator [HCB2(B)] WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1. Disconnect the gas supply tube and the burner tube. 2 . Remove the regulator from the broiler. 3 . Reverse the procedure t[...]

  • Page 25

    – 25 – LEVER ARM ASSEMBLY (ALL MODELS) Upper WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1 . Remove the grid carriage assembly as outlined in Grid Carriage Assembly. 2. Remove the two cotter pins [...]

  • Page 26

    – 26 – 3 . Remove the two cotter pins and washers from the lower lever arm assembly. 4. Remove the lower lever arm assembly from the two brackets. 5. Reverse the procedure to install. BLOWER AND MOTOR GHIR44 WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES[...]

  • Page 27

    – 27 – 8 . Disconnect the electrical wires. 9. Remove the blower and motor from the broiler. 10. Reverse the procedure to install. IR1 and IR2(B) WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. WARNING: SHUT OFF THE GAS BEFORE SERVICING. 1. Remove the screws and the bracket and the blower and moto[...]

  • Page 28

    – 28 – Light (GHIR44) WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. WARNING: SHUT OFF THE GAS BEFORE SERVICING. 1. Remove the manifold cover assembly as outlined in Covers, Panels and Handles. 2. Note the location and connection of the electrical wires. 3. Disconnect the electrical wires from th[...]

  • Page 29

    – 29 – PILOT ADJUSTMENT (ALL MODELS) 1 . Light the pilot as outlined under Lighting Pilot in the Installation and Operation manual for the appropriate model. 2. Locate the pilot adjustment screw on the supply end of pilot manifold pipe. 3. With a flat blade screwdriver, turn the pilot adjustment screw counterclockwise to increase or clockwise t[...]

  • Page 30

    – 30 – BURNER SERVICE (ALL MODELS) WARNING: SHUT OFF THE GAS BEFORE SERVICING THE OVEN. If the burner ports become obstructed or the burner cracks, the burner will not operate properly. 1. Remove burner(s) as outlined under Burner Assemblies Section of this manual. 2. Check burner(s) for: A. Obstruction in port holes. 1) Soak the burner(s) in w[...]

  • Page 31

    – 31 – TROUBLESHOOTING SYMPTOMS POSSIBLE CAUSES Uneven heating, sides burning. A) Temperature too low. B) Improper operation of broiler. C) Fluctuating gas pressure. Too much top heat. A) Temperature too high. B) Faulty ventilation. C) Excessive heat input. D) Gas pressure too high or orifice too large. Uneven heat front to back. A) Appliance n[...]

  • Page 32

    – 32 – FORM 35608 (Aug. 2003) PRINTED IN U.S.A.[...]