Table of Contents
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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
AGE24
ITW Food Equipment Group, LLC
3600 North Point Blvd.
Baltimore, MD 21222
SERVICE MANUAL
924RE
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
FORM F-35628 (Rev. 8-07)
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Table of Contents
Troubleshooting
Related Manuals for Vulcan-Hart MLS 924RE ML-135221-00G24
Summary of Contents for Vulcan-Hart MLS 924RE ML-135221-00G24
- Page 1 SERVICE MANUAL Heavy Duty Gas Griddles MODEL 924RE ML-135221-00G24 936RE ML-135222-00G36 948RE ML-135223-00G48 960RE ML-135224-00G60 972RE ML-135225-00G72 www.vulcanhart.com 924RE MODELS AGE24 ML-135226-00G24 AGE36 ML-135227-00G36 AGE48 ML-135228-00G48 AGE60 ML-135229-00G60 AGE24 AGE72 ML-135230-00G72 www.wolfrange.com ITW Food Equipment Group, LLC 3600 North Point Blvd. Baltimore, MD 21222 FORM F-35628 (Rev.
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Page 2: Table Of Contents
TABLE OF CONENTS ........................... 4 INSTALLATION COMPONENT LOCATION ........................5 ................5 948RE AND AGE48 CONTROL PANEL ......................6 CONTROL PANEL ........................6 BULLNOSE ........................7 HEAT SHIELD ........................7 BACK PANEL THERMOSTAT ............................7 ................8 THERMOSTAT TROUBLESHOOTING SYMPTOM – NO POWER TO THE BURNER SOLENOID ............8 SYMPTOM –... - Page 3 SYMPTOM – ONE BURNER HAS A DELAYED IGNITION; A SEVERAL SECOND LAPSE BETWEEN THE INDICATOR LIGHT TURING ON AND WHEN THE BURNER ACTUALLY LIGHTS...........................16 ....................... 16 BURNER REMOVAL ....................16 BURNER ADJUSTMENT GAS REGULATOR ..........................17 ................18 REGULATOR TROUBLESHOOTING SYMPTOM –...
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Page 4: Installation
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 required to perform the procedure. -
Page 5: Component Location
COMPONENT LOCATION 948RE AND AGE48 CONTROL PANEL... -
Page 6: Control Panel
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. -
Page 7: Heat Shield
HEAT SHIELD Disconnect the electrical power and follow lockout / tagout procedures The heat shield protects the electrical components should only temporarily removed easier replacement some control components. 1. Remove the control panel. 2. Remove screws along the top edge that secure the heat shield. -
Page 8: Thermostat Troubleshooting
Disconnect the electrical power and follow lockout / tagout procedures THERMOSTAT TROUBLESHOOTING SYMPTOM – NO POWER TO THE BURNER SOLENOID 1. Check for loose or excessively greasy/dirty connections at terminals 2. Check for continuity/resistance between the two thermostat terminals with wires disconnected A. -
Page 9: Thermostat Calibration
THERMOSTAT CALIBRATION 1. Each thermostat controls a 12” zone of the griddle. Using a Surface Probe temperature measurement device, observe the temperatures at the center points of the cooking zones. These points are located by starting 6” from the side splash (left or right) and every 12” across the width of the griddle, with all points located 12”... -
Page 10: Power On/Off Switch
TEMPERATURE KNOB DIAL POWER SWITCH INDICATOR LIGHT KNOB GUARD (OPTIONAL) POWER ON/OFF SWITCH The Power Switch controls the power supply to all other electronic components. Disconnect the electrical power and follow lockout / tagout procedures POWER SWITCH TROUBLESHOOTING SYMPTOM – NO POWER BEING SUPPLIED TO THE UNIT Check for loose or excessively greasy/dirty connections at terminals. -
Page 11: Indicator Light Removal
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 Remove the control panel Label and disconnect wires to the light Squeeze the light retainers and slide the light out through the front of the control panel Reverse the procedures to install and check for proper operation... -
Page 12: Flame Switch Troubleshooting
Disconnect the electrical power and follow lockout / tagout procedures FLAME SWITCH TROUBLESHOOTING SYMPTOM – INDICATOR LIGHTS, THERMOSTATS AND BURNER VALVES NOT WORKING 1. Check for loose or excessively greasy/dirty terminal connections 2. Check that flame switch probe is fully engulfed in the pilot flame and glowing cherry red. A. -
Page 13: Spark Ignitor Troubleshooting
Disconnect the electrical power and follow lockout / tagout procedures SPARK IGNITOR TROUBLESHOOTING SYMPTOM – NO SPARK BETWEEN PILOT HEAD AND ELECTRODE 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. -
Page 14: Solenoid Valve Troubleshooting
Disconnect the electrical power and follow lockout / tagout procedures SOLENOID VALVE TROUBLESHOOTING SYMPTOM – NO GAS FLOW TO BURNER Check terminals for loose or greasy/dirty connections Check gas pressure – check for orifice obstructions. With thermostat, indicator light and power switch on – check for 120 voltage between the two terminals on the solenoid. -
Page 15: Pilot Assembly Removal
PILOT ASSEMBLY REMOVAL Disconnect the electrical power and follow lockout / tagout procedures Shut off gas supply 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. BRACKET RETAINING SCREW 3. -
Page 16: Burner Troubleshooting
Disconnect the electrical power and follow lockout / tagout procedures BURNER TROUBLESHOOTING SYMPTOM – ALL BURNERS HAVE A LOWER OR HIGHER FLAME THAN NORMAL. 1. Check gas pressure SYMPTOM – ONE OR MORE BURNERS HAVE LOWER FLAME LEVEL THAN THE OTHERS. 1. -
Page 17: Gas Regulator
BURNER CLIP (UNDERNEATH) FLASH TUBE PILOT ASSY IGNITION 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 The 900RE and AGE series units must have an exterior machine gas regulator installed. -
Page 18: Regulator Troubleshooting
REGULATOR TROUBLESHOOTING SYMPTOM – UNIT WILL NOT MAINTAIN CONSISTENT PRESSURE Check that vent limiter is not clogged by grease and debris 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. -
Page 19: Sequence Of Operation
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. -
Page 20: Wiring Diagrams
WIRING DIAGRAMS WIRING DIAGRAM – 24-INCH GRIDDLE... -
Page 21: Wiring Diagram - 36-Inch Griddle
WIRING DIAGRAM – 36-INCH GRIDDLE... -
Page 22: Wiring Diagram - 48-Inch Griddle
WIRING DIAGRAM – 48-INCH GRIDDLE... -
Page 23: Wiring Diagram - 60-Inch Griddle
WIRING DIAGRAM – 60-INCH GRIDDLE... -
Page 24: Wiring Diagram - 72-Inch Griddle
WIRING DIAGRAM – 72-INCH GRIDDLE...