Vulcan ML-136221-00G24 - Manual

Page 2 - TABLE OF CONENTS

- 2 - TABLE OF CONENTS INSTALLATION ........................................................................................................................... 4 COMPONENT LOCATION ..........................................................................................................................

Page 4 - GENERAL; Certain procedures in this manual require electrical test or; No procedure

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 hav...

Page 7 - HEAT SHIELD; Disconnect the; that secure the heat shield.; THERMOSTAT; Thermostat

HEAT SHIELD Disconnect the electrical power and follow 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 se...

Page 8 - THERMOSTAT REMOVAL

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 disco...

Page 9 - THERMOSTAT CALIBRATION; S t e p 5

THERMOSTAT CALIBRATION 1 . E a c h t h e r m o s t a t c o n t r o l s a 1 2 ” z o n e o f t h e g r i d d l e . U s i n g a S u r f a c e P r o b e t e m p e r a t u r e m e a s u r e m e n t d e v i c e , o b s e r v e t h e t e m p e r a t u r e s a t t h e c e n t e r p o i n t s o f t h e c o o...

Page 10 - P O W E R S W I T C H R E M O V A L; c o n t r o l p a n e l .; INDICATOR LIGHT; INDICATOR LIGHT TROUBLESHOOTING; A. If no voltage – check wiring for short or break.

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 components. Disconnect the electrical power and follow lockout / tagout procedures POWER SWITCH TROUBLESHOOTING SYMPTOM – NO POWER BEING SUP...

Page 11 - INDICATOR LIGHT REMOVAL; Remove the control panel; FLAME SWITCH; PILOT HOOD

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 ...

Page 12 - SPARK IGNITER MODULE; L1 TERMINAL

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 pilo...

Page 13 - SOLENOID VALVES

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. I...

Page 14 - SOLENOID VALVE TROUBLESHOOTING; terminals on the solenoid.; Shut off gas supply; body that are stamped “IN”; pressure; and check for proper operation.; Check with a soap and water solution. Do not use an open flame.; PILOT; BRASS PILOT; SYMPTOM – PILOT WILL NOT LIGHT

Disconnect the electrical power and follow lockout / tagout procedures SOLENOID VALVE TROUBLESHOOTING SYMPTOM – NO GAS FLOW TO BURNER 1. Check terminals for loose or greasy/dirty connections 2. Check gas pressure – check for orifice obstructions. 3. With thermostat, indicator light and power switch ...

Page 15 - proper operation; HELPFUL HINT; BURNER

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 ...

Page 16 - BURNER TROUBLESHOOTING; Check gas pressure; the burner out through the back of the unit.; BURNER ADJUSTMENT

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. Check gas pressure 2. Check burner orifice for ...

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 REGULATOR INSTALLED IN A HORIZONTAL, UPRIGHT POSITION Th...

Page 18 - consuming gas; GAS PRESSURE MEASURMENT

REGULATOR TROUBLESHOOTING 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. ...

Page 20 - WIRING DIAGRAMS; WIRING DIAGRAM – 24-INCH GRIDDLE

WIRING DIAGRAMS WIRING DIAGRAM – 24-INCH GRIDDLE - 20 -

Page 21 - WIRING DIAGRAM – 36-INCH GRIDDLE

Page 22 - WIRING DIAGRAM – 48-INCH GRIDDLE

Page 23 - WIRING DIAGRAM – 60-INCH GRIDDLE

Page 24 - WIRING DIAGRAM – 72-INCH GRIDDLE