Vulcan-Hart ML-136221-00G24 manual

SERVICE MANUAL Heavy Duty Gas Griddles MODEL MLS 924RE ML-135221-00G24 936RE ML-135222-00G36 948RE ML-135223-00G48 960RE ML-135224-00G60 972RE ML-135225-00G72 www.vulcanhart.com 924RE AGE24 MODELS MLS AGE24 ML-135226-00G24 AGE36 ML-135227-00G36 AGE48 ML-135228-00G48 AGE60 ML-135229-00G60 AGE72 ML-135230-00G72 www.wolfrange.com ITW Food Equipment Gr[...]

- 2 - TABLE OF CONENTS INSTALLATION ........................................................................................................................... 4 COMPONENT LOCATION ....................................................................................................................... 5 948RE AND AGE48 CONTROL PANEL .................[...]

- 3 - SYMPTOM – ONE BURNER HAS A DELAYED I GNITION; A SEVERAL SECOND LAPSE BETWEEN THE INDICATOR LIGH T TURING ON AND W HEN THE BURNER ACTUALLY LIGHTS. ............................................................................................................................... ... 16 BURNER REMOVAL ..............................................[...]

GENERAL INTRODUCTION This manual is prepared for the use of trained service technicians and should only be used by those who are properly qualified. This manual is not intended to be all encompassing. You should read, in it's entirety, the repair procedure you wish to perform to determine if you have the necessary tools, instruments and skills[...]

COMPONENT LOCATION 948RE AND AGE48 CONTROL PANEL - 5 -[...]

CONTROL PANEL Disconnect the electrical power and follow lockout / tagout procedures The Control Panel holds the thermostats, indicator lights and power switch, and is connected to the Control Plate with a Panel Connector 1. Remove the four screws securing the control panel. There are two screws at each end of the panel. 2. Pull the control panel f[...]

HEAT SHIELD Disconnect the electrical powe r and f ollow lockout / tagout procedures The heat shield protects the electrical components and should only be temporarily removed for easier replacement of some the control components. 1. Remove the control panel. 2. Remove screws along the top edge that secure the heat shield. 3. The shield clamps on th[...]

Disconnect the electrical power and follow lockout / tagout procedures THERMOSTAT TROUBLESHOOTING SYMPTOM – NO POWER TO THE BURNER S OLENOID 1. Check for loose or excessively greasy/dirty connections at terminals 2. Check for continuity/resistance between the tw o thermostat terminals with wires disconnected A. If you get continuity/resistance wi[...]

THERMOSTAT CALIBRATION 1. Each thermostat cont rols a 12” zone of the griddle. Usin g a Surface Pr obe temper ature measurement de vice, observe the temperatures at the center points of the cooking zon es. These points are lo cated by starting 6” fr om the side splash (left or right) and every 12” across the width of the griddle, with a ll po[...]

TEMPERATURE DIAL INDICATOR LIGHT KNOB POWER SWITCH KNOB GUARD ( OPTIONAL ) POWER ON/OFF SWITCH The Power Switch controls the power supply to all other electronic com ponents. Disconnect the electrical power and follow lockout / tagout procedures POWER SWITCH TROUBL ESHOOTING SYMPTOM – NO POWER BEING SUPPLIE D TO THE UNIT 1. Check for loose or exc[...]

A. If no voltage – check wiring for short or break and check thermostat B. If you have 120V – replace indicator light. Disconnect the electrical power and follow lockout / tagout procedures INDICATOR LIGHT REMOVAL 1. Remove the control panel 2. Label and disconnect wires to the light 3. Squeeze the light retainers and slide the light out throug[...]

Disconnect the electrical power and follow lockout / tagout procedures FLAME SWITCH TROUBLESHOOTING SYMPTOM – INDICATOR LIGHTS, THERMOST ATS AND BURNER V ALVES NOT WORKING 1. Check for loose or excessively greasy/dirty terminal connections 2. Check that flame switch probe is fully engulf ed in the pilot flame and glowing cherry red. A. If sensor [...]

Disconnect the electrical power and follow lockout / tagout procedures SPARK IGNITOR TROUBLESHOOTING SYMPTOM – NO SPARK BETWEEN PILOT HEAD AND EL ECTRODE 1. Check for loose or greasy/dirty connections at all terminals (including electrode wire) 2. Check for 120 voltage from L1 terminal to ground a. If no voltage check on/off switch and wiring for[...]

Disconnect the electrical power and follow lockout / tagout procedures SOLENOID VALVE TROUBLESHOOTI NG SYMPTOM – NO GAS FLOW TO BURNER 1. Check terminals for loose or greasy/dirty connections 2. Check gas pressure – check for orif ice obstructions. 3. With thermostat, indicator light and power switch on – check for 120 voltage between the two[...]

PILOT ASSEMBLY REMOVAL Disconnect the electrical power and follow lockout / tagout procedures Shut off gas supply - 15 - 1. Remove control panel and heat shield 2. Reaching underneath the front of the unit, remove the pilot tube fitting and disengage the pilot tube from the pilot. 3. Pull the flame switch probe straight down and out from the snap i[...]

Disconnect the electrical power and follow lockout / tagout procedures BURNER TROUBLESHOOTING SYMPTOM – ALL BURNERS HAVE A LOWE R OR HIGHER FLAME THAN NORMAL. 1. Check gas pressure SYMPTOM – ONE OR MORE BURNERS HAVE LOWER FLAME LEVE L THAN THE OTHERS. 1. Check gas pressure 2. Check burner orifice for obstructions 3. Adjust burner air shutter 4.[...]

BURNER CLIP (U NDERNEATH ) FLASH TUBE PILOT ASSY IGN ITION PORTS AIR SHUTTER ORIFICE MAIN BURNERS These photos are for reference – it should not be necessary to remove the griddle top to perform the procedures listed in this manual. GAS REGULATOR REGULATOR INSTALLED IN A HORIZONTAL, UPRIGHT POSITION The 900RE and AGE series units must have an ext[...]

REGULATOR TROUBLESH OOTING SYMPTOM – UNIT WILL NOT MAINTAIN CONSISTENT PRESSURE 1. Check that vent limiter is not clogged by grease and debris 2. Check store gas pressure before regulator with all equipment on that line turned on and consuming gas A. For natural gas should be between 7” and 14” W.C. B. For propane gas should be between 12” [...]

SEQUENCE OF OPERATION Operation is the same for all size griddles. The neutral wire from the power source is directly connected to a terminal on each thermostat, the N terminal on each ignition module and one terminal on the pilot solenoid. 1. The power on/off switch is set to the ON position. 2. Voltage is applied to the following terminals A. Ter[...]

WIRING DIAGRAMS WIRING DIAGRAM – 24-INCH GRIDDLE - 20 -[...]

WIRING DIAGRAM – 36-INCH GRIDDLE - 21 -[...]

WIRING DIAGRAM – 48-INCH GRIDDLE - 22 -[...]

WIRING DIAGRAM – 60-INCH GRIDDLE - 23 -[...]

WIRING DIAGRAM – 72-INCH GRIDDLE - 24 -[...]