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Vulcan-Hart 924RE, 936RE, 948RE, 960RE, 972RE, ML-135221-00G24, ML-135222-00G36, ML-135223-00G48, ML-135224-00G60, ML-135225-00G72 manual

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Table of contents for the manual

  • Page 1

    SERVICE MANUAL For additional information on Vulcan-Hart or to locate an authorized parts and service provider in your area, visit our website at www.vulcanhart.com F35628 (10-04) - 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[...]

  • Page 2

    — 2 — F35628 (10-04) T ABLE OF CONTENTS GENERAL ............................................................................................................................... ......... 3 Introduction ............................................................................................................................... .3 Installation .[...]

  • Page 3

    — 3 — F35628 (10-04) INTRODUCTION Procedures in this manual will apply to all models unless specified. Pictures and illustrations can be of any model unless the picture or illustration needs to be model specific. All models are equipped with 30,000 BTU/HR burners as standard equipment. One burner is used for every 12 inches of griddle surface. [...]

  • Page 4

    — 4 — F35628 (10-04) REMOV AL AND REPLACEMENT OF P ARTS COMPONENT LOCATION Figure A Bullnose Deflector Plate Heat Shield Control Plate Control Panel Grease Drawer Griddle Flame Switch Ignitor Module Dual Solenoid Pilot Solenoid Dual Solenoid Ignitor Module Panel Connector Flame Switch Back Panel[...]

  • Page 5

    — 5 — F35628 (10-04) CONTROL PANEL WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. 1. Remove the two screws securing the control panel. One screw is located at each end of the control panel. 2 . Pull the control panel forward and disconnect the electrical connector near the right end. Figure B 3. [...]

  • Page 6

    — 6 — F35628 (10-04) POWER ON/OFF SWITCH WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. 1. Remove the control panel. 2. Label and disconnect the wires to the power ON/OFF switch. 3. Squeeze the switch retainer and slide the switch out through the front of the control panel. Figure E 4. Reverse pr[...]

  • Page 7

    — 7 — F35628 (10-04) FLAME SWITCH WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. 1. Remove the control panel. 2. Label and disconnect the wires to the flame switch. 3. Remove the two screws securing flame switch to control plate. 4. Remove sensor from the pilot assembly. Sensor can be accessed fr[...]

  • Page 8

    — 8 — F35628 (10-04) GAS BURNER WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. 1. Remove the back panel. 2. Cut shipping tie from burner. 3. To remove the burner, reach through the back of the unit and lift the burner up over the guide screw then pull the burner out through the back of the unit. [...]

  • Page 9

    — 9 — F35628 (10-04) PILOT WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. WARNING: SHUT OFF THE GAS BEFORE SERVICING THE GRIDDLE. 1. Remove control panel and heat shield for visual access of the pilot. 2. Reaching underneath the front of the griddle remove the pilot tube fitting and disengage the[...]

  • Page 10

    — 10 — F35628 (10-04) WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALL TIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POWER AND FOLLOW LOCKOUT / TAGOUT PROCEDURES, ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST. THERMOSTAT CAL[...]

  • Page 11

    — 11 — F35628 (10-04) 2. Units for operation of natural or propane gas are also equipped with a factory preset pressure regulator with an outlet pressure of 5” W.C. (Water Column) for natural gas supply and 10” W.C. for propane gas supply, and should not require further adjustment. 3. The burners and pilot flames may be observed through rou[...]

  • Page 12

    — 12 — F35628 (10-04) COMPONENT DESCRIPTION Power Switch ON/OFF – Switch turns power ON or OFF. Ignition Control Module – Provides ignition spark. Turned on when ON/OFF switch is set to the ON position and turned off when flame switch closes. Burner On Lights – Illuminates to indicate burner is turned on. Thermostats – Turns burner on a[...]

  • Page 13

    — 13 — F35628 (10-04) SCHEMA TIC DIAGRAMS Schematic Drawing for 24” Griddle B NOTE: 1. USE SUPPLY WIRES SUITABLE FOR 200 ° C OR EQUIVALENT EMPLOYER DES FILS D’ALIMENTATION ADEQUATS 200 ° C OR EQUIVALENT 2. HARNESS PART NO. 723526-1[...]

  • Page 14

    — 14 — F35628 (10-04) SCHEMA TIC DIAGRAMS Schematic Drawing for 36” Griddle B NOTE: 1. USE SUPPLY WIRES SUITABLE FOR 200 ° C OR EQUIVALENT EMPLOYER DES FILS D’ALIMENTATION ADEQUATS 200 ° C OR EQUIVALENT 2. HARNESS PART NO. 723527-1[...]

  • Page 15

    — 15 — F35628 (10-04) SCHEMA TIC DIAGRAMS Schematic Drawing for 48” Griddle B NOTE: 1. USE SUPPLY WIRES SUITABLE FOR 200 ° C OR EQUIVALENT EMPLOYER DES FILS D’ALIMENTATION ADEQUATS 200 ° C OR EQUIVALENT 2. HARNESS PART NO. 723528-1[...]

  • Page 16

    — 16 — F35628 (10-04) SCHEMA TIC DIAGRAMS Schematic Drawing for 60” Griddle B NOTE: 1. USE SUPPLY WIRES SUITABLE FOR 200 ° C OR EQUIVALENT EMPLOYER DES FILS D’ALIMENTATION ADEQUATS 200 ° C OR EQUIVALENT 2. HARNESS PART NO. 723529-1[...]

  • Page 17

    — 17 — F35628 (10-04) SCHEMA TIC DIAGRAMS Schematic Drawing for 72” Griddle B NOTE: 1. USE SUPPLY WIRES SUITABLE FOR 200 ° C OR EQUIVALENT EMPLOYER DES FILS D’ALIMENTATION ADEQUATS 200 ° C OR EQUIVALENT 2. HARNESS PART NO. 723530-1[...]

  • Page 18

    — 18 — F35628 (10-04) TROUBLESHOOTING GUIDE SYMPTOM Indicator light fails to light when power ON/OFF switch is set to ON position Indicator light fails to go out when power ON/OFF switch is set to the OFF position Griddle does not heat when thermostat is turned on Igniter stays on too long after pilot flame is established Igniter fails to light[...]

  • Page 19

    — 19 — F35628 (10-04) TROUBLESHOOTING GUIDE REMEDY Check operation of pilot valve Purge gas lines Check that gas supply is on Check and repair wire connection Check for obstruction or wrong size orifice Realign pilot and igniter Check and repair wire connection Correct air flow Check for obstruction or wrong size orifice Realign pilot and ignit[...]

  • Page 20

    FORM 35628 (10-04) PRINTED IN U.S.A.[...]