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SERVICE MANUAL
900RE SERIES
HEAVY DUTY
GAS GRIDDLES
MODELS
924RE ML-135221-00G24
936RE ML-135222-00G36
948RE ML-135223-00G48
960RE ML-135224-00G60
972RE ML-135225-00G72
- 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 in this
manual.
This manual is not intended to be all encompassing
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TABLE OF CONTENTS GENERAL ........................................................................................................................................3 Introduction ................................................................................................................................3 Installation ..................................................................................................................................3 Operation.......................................
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GENERAL INTRODUCTION SPECIFICATIONS Procedures in this manual will apply to all Electrical Data models unless specified. Pictures and illustrations can be of any model unless the Model Volts Hertz Phase Amps picture or illustration needs to be model 924RE 120 60 1 0.5 specific. All models are equipped with 30,000 BTU/HR burners as standard equipment. One 936RE 120 60 1 0.5 burner is used for every 12 inches of griddle 948RE 120 60 1 0.5 surface. 960RE 120 60 1 0.5 972RE 120 60 1 0.5 All models u
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REMOVAL AND REPLACEMENT OF PARTS COMPONENT LOCATION Back Panel Bullnose Deflector Plate Heat Shield Control Plate Control Panel Griddle Grease Drawer Dual Solenoid Ignitor Module Flame Panel Switch Connector Ignitor Module Flame Switch Dual Solenoid Pilot Solenoid Figure A F35628 (10-04) — 4 —
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CONTROL PANEL Griddle 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 Bullnose each end of the control panel. 2. Pull the control panel forward and disconnect the electrical connector near Figure C the right end. 3. Reverse the procedure to install. Panel Connector Heat Shield 1. Remove control panel. 2. The heat shield clamps on the front of the griddle and can be removed
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POWER ON/OFF SWITCH INDICATOR LIGHT WARNING: DISCONNECT THE ELECTRICAL WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT FOLLOW LOCKOUT / TAGOUT PROCEDURES. PROCEDURES. 1. Remove the control panel. 1. Remove the control panel. 2. Label and disconnect the wires to the 2. Label and disconnect the wires to the Red power ON/OFF switch. indicator light. 3. Squeeze the switch retainer and slide the 3. Squeeze the light retainers and slide the
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FLAME SWITCH IGNITOR MODULE WARNING: DISCONNECT THE ELECTRICAL WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT FOLLOW LOCKOUT / TAGOUT PROCEDURES. PROCEDURES. 1. Remove the control panel. 1. Remove the control panel. 2. Label and disconnect the wires to the 2. Label and disconnect the black, green, flame switch. and white wires from the ignitor module. 3. Remove the two screws securing flame 3. Disconnect the ignitor cable from the swi
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GAS BURNER PILOT SOLENOID WARNING: DISCONNECT THE ELECTRICAL WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT FOLLOW LOCKOUT / TAGOUT PROCEDURES. PROCEDURES. 1. Remove the back panel. WARNING: SHUT OFF THE GAS BEFORE 2. Cut shipping tie from burner. SERVICING THE GRIDDLE. 3. To remove the burner, reach through the 1. Remove the control panel. back of the unit and lift the burner up over 2. Label and disconnect the two wires the guide sc
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PILOT DUAL SOLENOID WARNING: DISCONNECT THE ELECTRICAL WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT FOLLOW LOCKOUT / TAGOUT PROCEDURES. PROCEDURES. WARNING: SHUT OFF THE GAS BEFORE WARNING: SHUT OFF THE GAS BEFORE SERVICING THE GRIDDLE. SERVICING THE GRIDDLE. 1. Remove control panel and heat shield for 1. Remove the control panel. visual access of the pilot. 2. Label and disconnect the two wires 2. Reaching underneath the front of
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SERVICE PROCEDURES AND ADJUSTMENTS WARNING: CERTAIN PROCEDURES IN 8. Replace the thermostat knob and verify THIS SECTION REQUIRE that thermocouple reading, knob indicator ELECTRICAL TEST OR and dial setting all agree. MEASUREMENTS WHILE 9. Turn the knob and ON/OFF switch to the POWER IS APPLIED TO THE OFF position. MACHINE. EXERCISE 10.Remove the thermocouple. EXTREME CAUTION AT ALL TIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POWER AND Thermostat FOLLOW LOCKOUT / TAGOUT Dial PRO
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2. Units for operation of natural or propane WARNING: THE FOLLOWING STEPS gas are also equipped with a factory preset REQUIRE POWER TO BE pressure regulator with an outlet pressure APPLIED TO THE UNIT of 5” W.C. (Water Column) for natural gas DURING TEST. USE EXTREME supply and 10” W.C. for propane gas CAUTION AT ALL TIMES. supply, and should not require further 6. Turn the power switch to the ON position. adjustment. 7. Turn only one burner on to the maximum 3. The burners and pilot flames may
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ELECTRICAL OPERATION COMPONENT DESCRIPTION SEQUENCE OF OPERATION Power Switch ON/OFF – Switch turns power Operation of all size griddles is the same. ON or OFF. The following discussion is for the 48” griddle. This griddle has four thermostats, two flame Ignition Control Module – Provides ignition switches, two dual solenoids and one pilot spark. Turned on when ON/OFF switch is set solenoid. to the ON position and turned off when flame switch closes. The neutral wire from the power source is dir
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SCHEMATIC DIAGRAMS Schematic Drawing for 24” Griddle F35628 (10-04) — 13 — 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
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SCHEMATIC DIAGRAMS Schematic Drawing for 36” Griddle F35628 (10-04) — 14 — 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
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SCHEMATIC DIAGRAMS Schematic Drawing for 48” Griddle F35628 (10-04) — 15 — 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
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SCHEMATIC DIAGRAMS Schematic Drawing for 60” Griddle F35628 (10-04) — 16 — 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
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SCHEMATIC DIAGRAMS Schematic Drawing for 72” Griddle F35628 (10-04) — 17 — 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
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TROUBLESHOOTING GUIDE SYMPTOM CAUSE REMEDY Indicator light fails to light Not plugged in Plug griddle into correct voltage when power ON/OFF outlet switch is set to ON position Faulty ON/OFF switch Replace ON/OFF switch Store circuit breaker tripped Reset circuit breaker Faulty lamp Replace lamp Indicator light fails to go Faulty power ON/OFF switch Replace switch out when power ON/OFF switch is set to the OFF position Griddle does not heat Not plugged in Plug griddle into correct voltage when t
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TROUBLESHOOTING GUIDE SYMPTOM CAUSE REMEDY Pilot does not light after Problem with pilot valve Check operation of pilot valve igniter has been on several minutes Gas supply not purged of air Purge gas lines No gas supply Check that gas supply is on Loose wire connection Check and repair wire connection Obstructed or wrong size pilot orifice Check for obstruction or wrong size orifice Problem with alignment of pilot and Realign pilot and igniter igniter Pilot fails to remain lit Loose wire connec
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FORM 35628 (10-04) PRINTED IN U.S.A.
