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SERVICE MANUAL

1. The front panel holds the temperature controllers thermostat cycle lights and lighted power switch 1 Remove four screws securing the front panel to frame SCREWS Fig 1 2 Lay front panel face down in front of the unit while servicing Pull the drawer out to support the panel as necessary NOTE Griddles that are 60 and 72 wide have 2 grease drawers 3 Reverse procedure to install BACK PANEL A WARNING Disconnect the electrical power to the machine and follow lockout tagout procedures A WARNING Shut off the gas before servicing the unit 44 WARNING All gas joints disturbed during servicing must be checked for leaks Check with a soap and water solution bubbles Do not use an open flame NOTE Remove the back panel when servicing a burner temperature probe pilot burner or to remove excessive grease build up from the flue area Page 5 of 26 1 Disconnect gas supply at griddle 2 Remove all screws from rear of griddle securing the back panel Fig 2 3 Reverse procedure to install CONTROL DEFLECTOR HEAT SHIELD x A WARNING Disconnect the electrical power to the machine and follow lockout tagout procedures 1 Remove FRONT PANEL 2 Remove control deflector heat shield from griddle frame The number of mounting screws installed depends on griddle width After screws are removed lift the control deflector and rotate forward to remove from griddle
2. CONTROL DEFLECTOR HEAT SHIELD 36 GRIDDLE SHOWN 26963 Fig 3 3 Reverse procedure to install and check for proper operation F45533 1014 VCCG Series Heavy Duty Gas Griddle REMOVAL AND REPLACEMENT OF PARTS 7 Check TEMPERATURE CONTROLLER TEMPERATURE CONTROLLER E AUBRATI N RADIANT BURNER A WARNING Disconnect the electrical power to the machine and 1 Remove FRONT PANEL follow lockout tagout procedures 2 Note wire connections then disconnect them from temperature controller 44 WARNING Shut off the gas before servicing the 3 Loosen screws securing knob guard to front unit anel to provide clearance for knob removal P P 44 WARNING All gas joints disturbed during servicing must be checked for leaks Check with a soap and water solution bubbles Do not use an open flame NOTE Radiant burner is removed through the front of griddle 1 Remove BACK PANEL 2 Remove FRONT PANEL 3 Remove CONTROL DEFLECTOR HEAT SHIELD 4 Remove burner flexible tubing from the burner orifice elbow and gas valve fitting BURNER FLEX LOOSEN SCREWS Fig 4 4 Loosen set screw then remove knob from temperature control shaft 5 Remove screws securing temperature controller to front panel Fig 6 5 Disconnect compression fitting from gas valve inlet and slide gas valve off the tubing Fig 5 6 Reverse procedure to install
3. SERVICE PROCEDURES AND ADJUSTMENTS RADIANT BURNER AIR SHUTTER ADJUSTMENT A Ifa proper flame is observed as described in the beginning paragraph no further adjustment is necessary B If flame is yellow tipping and lifting from ky burner continue with procedure to adjust Lx A WARNING Disconnect the Et e a Se N electrical power to the machine and i COMISE PONET ANT E JAS SURRY Oi A N follow lockout tagout procedures 7 Remove RADIANT BURNER Y eS NOTE The factory default air shutter positions are 44 WARNING Shut off the gas before servicing the half open natural full open propane unit 8 Loosen the air shutter screw and hold the shutter The efficiency of the burner depends on a delicate balance between the air supply and volume of gas Whenever this balance is disturbed poor operating characteristics and excessive gas consumption may occur An air shutter on the front of the burner controls the gas mixer balance A yellow streaming flame on the burner is an indication of insufficient primary air A white blue flame is a result of excessive primary air A proper flame should be blue in color well defined and 9 seated on the burner port 10 SHUTTER SCREW 11 1 2 25500 Fig 29 1 Remove BACK PANEL 2 Re connect gas supply to machine then turn the supply on Connect power to machine 4 Turn power switch on and rotate temperature controller knob to call for heat 5 With burner
4. The gas orifice is mounted to the burner at the venturi inlet Page 16 of 26 VCCG Series Heavy Duty Gas Griddle SERVICE PROCEDURES AND ADJUSTMENTS GAS ORIFICE Saco BURNER 27138 Fig 32 Remove FRONT PANEL Verify gas orifice is threaded into the fitting properly and is centered and mounted perpendicular to the burner venturi opening Adjust alignment as necessary Check gas orifice for blockage or damage If dirty clean with air or water only Verify gas orifice is correct for the altitude Contact the appropriate service support department for gas orifice information Please have the machine model serial number and gas type ready THERMOCOUPLE TEST Cycle the power switch and set temperature knob to call for heat Observe thermostat cycle light on front panel A If blinking there may be a problem with thermocouple or temperature controller To identify error code referto TEMPERATURE CONTROLLER LED DIAGNOSTICS AND OPERATING STATUS Access TEMPERATURE CONTROLLER Remove thermocouple connections from temperature controller 26949 Fig 33 4 Check the thermocouple for resistance A If meter reads an overload OL condition open or zero ohms short replace the thermocouple and check temperature controller for proper operation 5 If resistance is measured thermocouple is good TEMPERATURE CONTROLLER TEST 1 Cycle the power switch and set temperature knob to call
5. F45533 1014 A Page 6 of 26 VCCG Series Heavy Duty Gas Griddle REMOVAL AND REPLACEMENT OF PARTS ORIFICE HOLDER a BRACKET COMPRESSION FITTING M Fig 9 9 Align mounting screw head on the burner air shutter to the slot in heat shield assembly hole and remove burner from heat shield Fig 7 3 10 Reverse procedure to install and check for proper 6 Note thermocouple connections then disconnect operation from temperature controller ESC 7 Remove burner shield assembly and burner from THERMOCOUPLE RADIANT griddle burner remains attached to the burner BURNER shield assembly Removal 1 Remove RADIANT BURNER steps 1 through 8 fe to access thermocouple shield and BURNER SHIELD E 2 thermocouple ASSEMBLY l AA 2 Push thermocouple shield toward the front of griddle to disengage the rear mounting tab on thermocouple shield from the support bracket on the bottom of griddle plate NOTE When installing burner ensure the locating LA pin and mounting plate at the rear of burner are oa properly inserted in the mounting slot At the front of SHIELD a griddle ensure the thermocouple shield front a mounting tab is inserted in the burner shield slot to support the thermocouple shield Fig 10 8 Remove orifice holder bracket from burner shield 3 Loosen mounting nut and remove thermocouple assembly probe from bottom of griddle plate Page 7 of 26 F45533 1014 VCCG S
6. a fault by the ignition modules internal diagnostics sparking is turned off and the output for the pilot valve and main valve are turned off valves close De pending on the error the ignition module then enters lockout mode or standby mode and flashes a red LED error code In lockout mode all operation is disabled To clear the error power must be removed from the module or the temperature controller must be cycled OFF ON to the remove the call for heat In standby mode the control disables operation until the error is corrected at which time the normal operation sequence is initiated again Page 23 of 26 F45533 1014 VCCG Series Heavy Duty Gas Griddle TROUBLESHOOTING IGNITION MODULE ERROR CODES Red Flashes Error Definition Error Type Possible Cause 1 Verify gas supply is turned on and gas supply pressure is correct 2 Air not purged from gas supply line Cycle power switch 2 3 times to see if 1 flash then No pilot flame in pilot will light Lockout pause trial time 3 Gas orifice clogged 4 ignitor not sparking Check wiring connections condition of ignitor cracks in ceramic or corrosion build up on flame sense probe and spark gap les hen Tii Sense stuck Ignition module malfunction Pilot valve or Main 3 flashes then Ss valve output relay Lockout Ignition module malfunction pause malfunction Verify gas supply is turned on and gas supply pressure is correct Gas orifi
7. and gas supply Return needle valve to the closed position then disconnect manometer B If pressure is outside the allowable tolerance continue with procedure PRESSURE READINGS PRESSURE READINGS IN W C PRESSURE READINGS IN W C C INCOMING LINE f LINE GAS TYPE MANIFOLD INCOMING LINE NOTE To correctly set the manifold pressure the incoming line pressure must be within the recommended values for the gas type shown in the table 8 To adjust remove adjustment screw cap from the gas valve being checked 9 Turn the adjusting screw to obtain the proper gas pressure clockwise increase counterclockwise decrease F45533 1014 10 Once the correct pressure has been set turn off the power switch and gas supply Return needle valve to the closed position then disconnect manometer 11 Install the adjustment screw cap 12 Check for proper operation BURNER GAS ORIFICE CHECK lt A WARNING Disconnect the electrical power to the machine and follow lockout tagout procedures 44 WARNING Shut off the gas before servicing the unit If burner operation seems poor and other systems have been checked access the burner for the griddle section being serviced and inspect the burner gas orifice Radiant Burner The gas orifice and elbow fitting is mounted to the orifice holder bracket at the front of the burner venturi inlet RADIANT BURNER Fig 31 Infrared Burner
8. griddle plate Page 11 of 26 F45533 1014 VCCG Series Heavy Duty Gas Griddle REMOVAL AND REPLACEMENT OF PARTS 6 Route thermocouple wires through the opening in burner shield Lift burner shield and position it so the front mounting tab on the thermocouple shield can be inserted into the upper slotted opening in the burner shield Secure burner shield to griddle Install ignitor to burner shield 8 Connect thermocouple wires to the temperature controller 9 Install control deflector heat shield 10 Install front and back panels 11 Check TEMPERATURE CONTROLLER CALIBRATION IGNITOR INFRARED BURNER 1 Remove FRONT PANEL 2 Note connection locations then disconnect ignitor cable and jumper from ignitor terminals 3 Remove screws securing ignitor to burner shield EEN EN Gi E aon Fl E A ICO IGNITOR CABLE AND JUMPER 26962 Fig 22 4 Ensure spark gap between ignitor electrode and ground rod is approximately 1 8 If adjustment is necessary position the ground rod to achieve the correct spark gap 5 Reverse procedure to install and check for proper operation F45533 1014 FLAME GROUND SENSE ROD ROD 1 8 IGNITOR ELECTRODE AI3725 Fig 23 PILOT ORIFICE INFRARED BURNER A WARNING Disconnect the electrical power to the machine and follow lockout tagout procedures A WARNING Shut off the gas before servicing the unit AWARNING All gas joi
9. lit observe flame from back of machine Page 15 of 26 in place to prevent movement A If flame is yellow streaming slightly rotate shutter to open it Hold shutter in position and tighten screw to secure the shutter B If flame is white blue slightly rotate shutter to close it Hold shutter in position and tighten screw to secure the shutter Install radiant burner Install back panel Check for proper operation GAS MANIFOLD PRESSURE ADJUSTMENT lt A WARNING Disconnect the electrical power to the machine and follow lockout tagout procedures A WARNING Shut off the gas before servicing the unit Remove FRONT PANEL Connect manometer to the pressure check fitting at the top of gas valve being checked Open the needle valve on the pressure check fitting to allow gas pressure measurement F45533 1014 VCCG Series Heavy Duty Gas Griddle SERVICE PROCEDURES AND ADJUSTMENTS PRESSURE CHECK S _FITTING YAOI ALI hh OEN hih g 7 Wy he ADJUSTMENT SCREW CAP D 26948 Fig 30 Turn gas supply on Connect power and turn power switch on Set all the temperature controls on the griddle to their highest setting and allow burners to light All burners must be lit during test and adjustment 7 Check manifold pressure reading and compare to the value in the table below A If pressure is within the allowable tolerance then no adjustment is necessary Turn off the power switch
10. lit then check the following A On models with Radiant burner verify the electrode is fully engulfed by pilot flame B Verify ground wire pin 1 from ignition module is securely grounded to chassis As long as the ignition module is sensing flame current then the pilot will stay lit VCCG Series Heavy Duty Gas Griddle SERVICE PROCEDURES AND ADJUSTMENTS 6 Main burner valve energized by main valve output pin 5 from ignition module allowing gas flow to burner and the burner lights RADIANT BURNER PILOT FLAME ADJUSTMENT lt A WARNING Disconnect the electrical power to the machine and follow lockout tagout procedures The VCCG series griddle with Radiant burner utilizes a gas valve dual solenoid and 90 elbow compression fitting with needle valve adjustment to control gas flow to pilot burner Each 12 griddle section has individual controls 1 Turn thermostat knob to the off position 2 Remove BACK PANEL 3 Connect power to machine and turn power switch on 4 ignitor begins sparking and pilot valve opens to allow gas to pilot A If flame envelops 3 8 to 1 2 of the ignitor flame sense electrode pilot burner is adjusted properly B If flame is outside of specified range continue with procedure 5 Remove FRONT PANEL 6 Locate the needle valve and adjust NEEDLE VALVE E PILOT BURNER VALVE 27131 Fig 36 Page 19 of 26 A To increase pilot flame turn valve nee
11. then disconnect from temperature controller Remove burner shield to access the thermocouple shield and thermocouple NOTE The burner shield provides a slotted opening to support the front mounting tab on thermocouple shield Remove IGNITOR INFRARED BURNER from burner shield Push thermocouple shield toward the front of griddle to disengage the rear mounting tab on thermocouple shield from the support bracket on the bottom of griddle plate THERMOCOUPLE SHIELD M 8 Loosen mounting nut and remove thermocouple probe from bottom of griddle plate Fig 21 9 Remove insulating sleeve from thermocouple wires and retain for use on replacement thermocouple Installation 1 Slide insulating sleeve over thermocouple wires 2 Apply a thin coating of heat transfer and anti seize compound to the thermocouple probe tip and mounting nut threads 3 Route thermocouple probe through the front opening in griddle frame and lay it on top of burner 4 From rear of griddle thread thermocouple probe into the mounting hole in griddle plate and stop when probe tip touches the plate Torque the mounting nut to a maximum of 25 in lbs NOTICE Do not over tighten or damage to the thermocouple probe may occur Due to the aluminum plate core it is also possible to create a raised area over the probe if overtightened 5 Insert rear mounting tab on thermocouple shield into the support bracket on the bottom of
12. will continue to cycle with the at pin 1 on temperature controllers temperature controller until the temperature knob Temperature controllers are powered is turned off or the power switch is turned off 3 Turn temperature knobs to 350 F A Thermostat cycle lights red turn on The lights will cycle on off with the call for heat B Temperature controller s internal contacts close N O and provide L2 neutral from the OUT terminal to terminal 1 for main burner solenoids on the gas valves GRIDDLE WIRING DIAGRAM NOTE The base model griddle is 24 wide Each additional 12 griddle section has its own set of identical controls that are conected using a 12 add on wire harness Because the components and wiring are identical for each section the diagram below can be used for all models 12 ADD ON WIRE HARNESS FOR EACH ADDITIONAL 12 ZONE WIDTH IGNITOR MODULE IGNITOR MODULE LED o Y o E S IGNITOR MODULE o SPARK SENSE BURNER GND PILOT VALVE gt VALVE NEUTRAL P SPARK SENSE SPARK SENSE 120VAC N Black _ OUT U UNE POWER SWITCH SOLID STATE SOLID STATE SOLID STATE TEMPERATURE TEMPERATURE TEMPERATURE CONTROLLER CONTROLLER CONTROLLER T KTYPE md T KTPE ad KTYPE u u FALI z LINE OUT LED CONNECTOR LED JH CONNECTOR 4 CONNECTOR om THERMOCOUPLE THERMOCOUPLE THERMOCOUPLE VCCG WIRING DIAGRAM DERIVED FROM
13. 6 4 Remove screws 2 securing griddle plate to frame at the front of griddle 5 Cut two lengths of 2x4 appropriate for the griddle plate width leaving additional length to grasp on each side of griddle plate 6 Lift front of griddle plate and support with 2x4 then lift rear of griddle plate and support with 2x4 2X4 s 26954 Fig 26 7 Lift griddle plate and remove from base of equipment 8 Reverse procedure for installation F45533 1014 VCCG Series Heavy Duty Gas Griddle SERVICE PROCEDURES AND ADJUSTMENTS SERVICE PROCEDURES AND ADJUSTMENTS TEMPERATURE CONTROLLER CALIBRATION NOTE Ensure the griddle is level before performing calibration as outlined under LEVELING in the Installation amp Operation Manual NOTE Do not use an infrared thermometer for measuring griddle surface temperatures These devices are highly sensitive to surface color clean or dirty angle of reading and distance from the surface Use a temperature meter with surface probe for all griddle surface temperature measurements 24 VCCG TOP VIEW SHOWN 26946 Fig 27 CALIBRATION CHECK 1 Each temperature controller controls a 12 zone of the griddle Center point area of cooking zones are located 6 from the side splash left or right every 12 across the width of griddle and 12 back from the front of griddle plate 2 Clean the center point areas of cooking zones to ensure good contact with surface probe 3
14. 944564 REV B ALL GRIDDLE MODELS 36 GRIDDLE SHOWN AI3724 GRIDDLE WIRING DIAGRAM F45533 1014 _ Page 22 of 26 VCCG Series Heavy Duty Gas Griddle TROUBLESHOOTING TROUBLESHOOTING TEMPERATURE CONTROLLER LED DIAGNOSTICS AND OPERATING STATUS NOTE Each of the individual thermostat LED s are externally mounted to the front panel and are refered to as thermostat cycle lights Each 12 griddle section has individual controls LED Codes Solid Red Indicates temperature controller internal relay is energized Call For Heat requested e Two quick flashes every 3 seconds indicates a No Heating fault condition LED sequence is ON for 1 second OFF for 1 second ON for 1 second then OFF for 4 seconds and repeats Three quick flashes every 3 seconds indicates temperature probe input circuit is open LED sequence is ON for 1 second OFF for 1 second ON for 1 second OFF for 1 second ON for 1 second then OFF for 4 seconds and repeat e Continuous ON OFF ON OFF ON cycle indicates an internal problem and the temperature controller must be replaced IGNITION MODULE LED DIAGNOSTICS AND OPERATING STATUS LED Green for Normal Operation Green Y sec on Y sec off Inter purge delay before ignition re try if flame is lost Green blinking rapidly Trial for ignition Green on solid Flame detected pilot main burner on LED Red for Error on Operation Upon detection of
15. Controls One Solid State thermostat with thermocouple probe for each 12 of griddle width Temperature adjustment range 150 F to 550 F on all griddle plate surface types except the Rapid Recovery Griddle plate 150 F to 450 F One Electronic Ignition module with pilot safety system for each 12 of griddle width One Dual Solenoid gas valve with internal regulator for each 12 of griddle width TOOLS Standard Standard set of hand tools e VOM with ability to measure micro amp current F45533 1014 VCCG Series Heavy Duty Gas Griddle GENERAL VOM with minimum of NFPA 70E CAT III 600V UL CSA TUV listed Sensitivity of at least 20 000 ohms per volt Meter leads must also be rated at CAT III 600V e Temperature tester K type thermocouple preferred with surface probe U Tube or Digital Manometer Thread sealant suitable for use with natural or propane gas Special e Torque wrench capable of measuring at least 25 in lbs for tightening thermocouple probe to griddle plate Bolt size 5 16 18 e Safekote 60 or equivalent Heat Transfer and Anti Seize Compound rated for 600 F purchase locally Apply to thermocouple probe F45533 1014 _ Page 4 of 26 VCCG Series Heavy Duty Gas Griddle REMOVAL AND REPLACEMENT OF PARTS REMOVAL AND REPLACEMENT OF PARTS FRONT PANEL A WARNING Disconnect the electrical power to the machine and follow lockout tagout procedures
16. NITION MODULE TEST NOTE lgntion module has 10 second ignition trial 4 time 5 second inter purge delay before retry and will attempt to light pilot 7 times then lockout if unsuccessful 1 Cycle the power switch and set temperature knob to call for heat 2 Ignition module is energized and ignition cycle starts Observe ignition module LED thru front panel sight glass 5 F45533 1014 Page 18 of 26 A If LED is Red and blinking an error code there may be a problem with pilot burner flame sense or ignition module To identify error code refer to IGNITION MODULE LED DIAGNOSTICS AND OPERATING STATUS B LED is Green and blinking during ignition trial and inter purge LED then turns to solid Green when pilot flame is established flame is sensed 4 120V 5 MAIN VALVE OUT 3 NEUTRAL 2 PILOT VALVE OUT 1 GND Pilot solenoid valve energized by pilot valve output from ignition module pin 2 allowing gas flow to the pilot burner Ignition module generates spark voltage and ignitor begins sparking If there is no spark then check the following A Check for 120VAC at ignition module pin 3 NEUTRAL and pin 4 120V B Inspect ignitor cable for damage and continuity C Verify spark gap is set at 1 8 D If component passes the above tests and is not sparking then replace ignition module Pilot burner lights and flame is sensed If electrode continues to spark after pilot is
17. Power switch internal red light turns on Al3724 ih B All ignition modules are powered at pin 4 1 Conditions 120V A 120VAC connected to griddle and is C Ignition modules generate spark voltage properly grounded from the spark sense terminals to begin B Incoming neutral line L2 is connected to sparking at the ignitorflame SENSE power switch terminal N non switching and electrode LED s blink green during 5 to each second inter purge delay and 10 second y trial for ignition normal operation 1 Ignition module connector at pin 3 NEUTRAL D Ignition modules turn on the pilot valve output at pin 2 and provide 120V to terminal 2 Temperature controller at the LINE 3 on the pilot valves Pilot valve solenoids terminal internal relay COM and on the gas valves are energized and gas jumpered to pin 2 NEUTRAL on flows to pilot burners temperature controller E Pilot burners light flame is sensed and C Incoming hot line L1 is connected to power ignitors stop sparking LED stops blinking switch terminal L1 and remains solid green D Power switch off SPST Page 21 of 26 F45533 1014 VCCG Series Heavy Duty Gas Griddle ELECTRICAL OPERATION F Ignition modules turn on the main valve C Main burner solenoids on gas valves are output at pin 5 energized and gas flows to each burner G L1 present at terminal 2 on the main valve Bumers lohtand pegin heanng griddle solenoids output and jumpered to LINE IN 4 Griddle
18. S 005000 0c eee 23 GENERAL siti thand Sah ta iat ee A Gost ete Riba Sd tea sea 24 INFRARED BURNER tcccia io darse andi tae tattle nie A Sam ab a a E a 26 RADIANT BURNER vic s20t 2 50 id Ad ee a AG Gene A Gad Renee ae 26 VULCAN 2014 F45533 1014 TT Page 2 of 26 VCCG Series Heavy Duty Gas Griddle GENERAL GENERAL INTRODUCTION This Service Manual covers specific service information related to the models listed on the front cover Procedures in this manual will apply to all VCCG Heavy Duty Gas Griddles unless otherwise specified Raising the griddle plate is not required for servicing the griddle components Griddle components are serviced through the front and rear Pictures and illustrations can be of any model unless the picture or illustration needs to be model specific The VCCG griddles are available with three different cooking surface types Steel standard Chrome optional Rapid Recovery Griddle Plate optional The Rapid Recovery Griddle plate is a composite material which is engineered to provide a high heat transfer rate to the food The top surface can be scored or dented by careless use of a spatula or scraper The center of the plate is an aluminum core with sheets of stainless steel laminated to the top and bottom exterior surfaces MODELS Vulcan e VCCG24 24 x 24 width x depth griddle plate VCCG36 36 x 24 width x depth griddle plate VCCG48 48
19. SERVICE MANUAL VCCG Series Heavy Duty Gas Griddle VCCG24 VCCG36 vccG4s g VCCG60 VCCG72 VCCG36 Shown NOTICE This Manual is prepared for the use of trained Vulcan Service Technicians and should not be used by those not properly qualified This manual is not intended to be all encompassing If you have not attended a Vulcan Service School for this product you should read in its entirety the repair procedure you wish to perform to determine if you have the necessary tools instruments and skills required to perform the procedure Procedures for which you do not have the necessary tools instruments and skills should be performed by a trained Vulcan Service Technician The reproduction transfer sale or other use of this Manual without the express written consent of Vulcan is prohibited This manual has been provided to you by ITW Food Equipment Group LLC ITW FEG without charge and remains the property of ITW FEG and by accepting this manual you agree that you will return it to ITW FEG promptly upon its request for such return at any time in the future A product of Vulcan Hart 3600 North Point Blvd Baltimore MD 21222 F45533 1014 VCCG Series Heavy Duty Gas Griddle TABLE OF CONTENTS GENERAL siriga aa A li e DR A A dou 3 INTRODUCTION canica at Os nu da bala ata A rd a oda dia 3 MODELO tate datar oda dale a A ia IE ad bd anid jade atest ido dada laa A 3 INSTALLATION sci cactus neta dad pia a
20. Set thermostats to 350 F and allow the thermostat cycle light to cycle ON and OFF at least three times to stabilize griddle surface temperatures 4 Monitor the thermostat cycle light for the temperature controller calibration being checked When the light cycles OFF record temperature for that zone If temperature measurement is 350 F 10 F the control is properly calibrated F45533 1014 If temperature measurement is outside of tolerance then temperature control must be calibrated CALIBRATING TEMPERATURE CONTROL 1 Remove FRONT PANEL 2 Loosen screws 2 securring knob guard to the control panel for temperature controller being calibrated 3 Loosen set screw then remove knob from temperature control shaft Do not rotate the knob during removal LOOSEN KNOB DIAL scREWS re Fig 28 4 Loosen screws on the temperature dial so the dial will rotate 5 Install knob onto the temperature control shaft Do not rotate the knob during installation 6 Rotate temperature dial to match the temperature reading Hold dial in position and remove knob This adjustment offsets the indicated temperature on the dial to the actual temperature measured 7 Tighten dial screws 8 Install Knob onto the temperature control shaft and tighten set screw 9 Repeat CALIBRATION CHECK to verify adjustment Adjust calibration until temperature is within tolerance Page 14 of 26 VCCG Series Heavy Duty Gas Griddle
21. TE ASSEMBLY kresie io ees irasai tie hae a da aaa eee eee eae Oak ci beeen 13 SERVICE PROCEDURES AND ADJUSTMENTS 00 00 c cece eens 14 TEMPERATURE CONTROLLER CALIBRATION 0000 c eee ee 14 RADIANT BURNER AIR SHUTTER ADJUSTMENT 0 00 22 e cee ees 15 GAS MANIFOLD PRESSURE ADJUSTMENT 0 c cece eee as 15 BURNER GAS ORIFICE CHECK 0 0 0 nee 16 THERMOCGOUPLE TEST tocino ride donde Age aia E tare man dese dt a etal 17 TEMPERATURE CONTROLLER TEST 0 0 000 eee nena 17 IGNITION MODULE TEST is ciclones taa ia aa teal a NS ada aed ara goa Ala 18 RADIANT BURNER PILOT FLAME ADJUSTMENT 0 00 rr 19 GAS VALVE TESTS rromii aatan iaaii E ii sada end vata alah Gu alte des AR bean wien ntl 19 INFRARED BURNER aien ccaieesos trie wath we tdi deans Sabre td o tee A ed aes 20 ADJUSTMENT s ctccedct ctaritatanatatte tata iana ra RA a malonate id 20 FLAME APPEARANCE sits 40a ona ations algae a ana a tas oe whan ati tlle Wes doe Peale a ele wae 20 ELECTRICAL OPERATION aiiai ela ate ane E la da tt ate 21 COMPONENT FUNCTION Sic e Silda a A Ae sb en ae A sel Es 21 SEQUENCE OF OPERATION iio oda ad al A le OA She NS Sa 21 GRIDDLE WIRING DIAGRAM 0 0 0 cr 22 TROUBLESHOOTING cuna a iia Lda tat AA A oh Gane beeen Abas ohana aoe ui 23 TEMPERATURE CONTROLLER LED DIAGNOSTICS AND OPERATING STATUS 23 IGNITION MODULE LED DIAGNOSTICS AND OPERATING STATU
22. ce clogged Pilot flame is not in good contact with 4 flashes then Repetitive flame flame sense probe Lockout pause loss error ignitor malfunction Check wiring connections condition of ignitor cracks in ceramic or corrosion build up on flame sense probe and spark gap Heavy drafts in room or vent hood settings 7 flashes then Internal control Ignition module malfunction pause error Verify 120VAC supply polarity is correct and ground is present On Solid Reg _ Line voltage or 2 Voltage drops or power brown outs Frequency error during times of heavy usage or electrical nose created by other equipment running on the same line GENERAL NOTE Before performing any of the troubleshooting steps listed in this section check to see if the LED s for the Temperature Controller and the Ignition Module are blinking to indicate a possible problem with the component The service technician can use the LED blinking codes to assist in determining if these components are functioning properly or in need of replacement F45533 1014 Page 24 of 26 VCCG Series Heavy Duty Gas Griddle TROUBLESHOOTING GENERAL POSSIBLE CAUSES Power switch inoperative No power to ignitor module No Spank to Tanie Biot Durer Ignition module not properly grounded Spark gap incorrect Ignitor flame sense wire inoperative Ignition module malfunction No power to pilot solenoid valve Spark at ignitor but pilot burn
23. cl a EL DE i ada A AA BA 3 OPERATION sicinoaocorariadr aclarar paar 3 SPECIFICATIONS icaianirarsritarcda rr ina a Da ia 3 TOOLS inside rn a aa ia d ta a a ia 3 REMOVAL AND REPLACEMENT OF PARTS coco 5 FRONT PANEL sci ties tucteavats tans Maeda lel asiad coco ai dale diate dawn wala REA IIA Ad 5 BACK PANEL origossa atada si o ta RR atid AA hae ade pte AAA alain DARA 5 CONTROL DEFLECTOR HEAT SHIELD 0002s 5 TEMPERATURE CONTROLLER 0 0000 o cece nena 6 RADIANT BURNER pido toc ccy cunts dita doen avers aval radon da V DAR Id da Ad ian Meat eae 6 THERMOCOUPLE RADIANT BURNER 00000 beeen eee enna 7 REMOVAL uscansianitajo parra id aidan aad AA and nahn nal Sade on taal p ata 7 INSTALLATION Sac cowie aici a A AAA A A AA ARA ld 8 PILOT RADIANT BURNER 9 034008 deidad wha ar gure o al eis keane Bea oe 8 IGNITION MODULE cocida nigerian tin dd AEA ais wie aaah Mad aaah T dh 9 GAS VALVE uvas pun all iene tae ae ha ong RAE AAAA EAA chee DA baw one pease 9 INFRARED BURNER occ tarta daa io putada il OIE ta bina o ti 10 THERMOCOUPLE INFRARED BURNER 00 cee eee ee eee eee 11 REMOVAL iia aia Sites tase tt i aa ais within dann ah ademas baa aaa 11 INSTALLATION coccion anaga cca ia baie ats ots E Prabal alii oe ATA yh Oe ta aa ad 11 IGNITOR INFRARED BURNER niu sirig satia Paara aadi a E nen eee eee eee 12 PILOT ORIFICE INFRARED BURNER 0 0 00 c iaa aha e eens 12 GRIDDLE PLA
24. dle counterclockwise To decrease pilot flame turn valve needle clockwise 7 Once pilot flame is adjusted correctly turn thermostat knob to call for heat 8 Verify pilot burner remains lit when burner lights Adjust pilot flame as necessary 9 Disconnect power to machine 10 Install front and rear panels 11 Check for proper operation GAS VALVE TESTS ky Se A WARNING Disconnect the S electrical power to the machine and YES follow lockout tagout procedures ap S 1 Remove FRONT PANEL 2 Connect power to machine 3 Turn on power switch and adjust temperature controller to call for heat D Fig 37 4 Check for 120VAC to the gas valve dual solenoid Main burner solenoid valve terminals 1 amp 2 and Pilot solenoid valve terminals 3 amp 4 A If no voltage to either one of the solenoid valves check wiring connections B If pilot solenoid valve has no voltage perform IGNITION MODULE TEST F45533 1014 VCCG Series Heavy Duty Gas Griddle SERVICE PROCEDURES AND ADJUSTMENTS C If main burner solenoid valve has no voltage perform IGNITION MODULE TEST and TEMPERATURE CONTROLLER TEST 5 If 120VAC is present on solenoid valve terminals after performing previous steps either the solenoid coil or valve is malfunctioning 6 To determine if solenoid coil is malfunctioning check resistance between main burner solenoid terminals 1 amp 2 and pilot solenoid te
25. eck with a soap and water solution bubbles Do not use an open flame 1 Remove RADIANT BURNER 2 Disconnect compression fitting from pilot NOTICE When disconnecting compression fitting for the pilot support bracket to prevent bending 3 Remove pilot and mounting bracket from the burner mounting panel 4 Pull spark wire through the hole in control mounting panel and remove pilot from griddle 5 Remove pilot from pilot mounting bracket COMPRESSION FITTING Fig 12 6 Reverse procedure to install NOTE When installing verify spark gap is 1 8 Page 8 of 26 VCCG Series Heavy Duty Gas Griddle REMOVAL AND REPLACEMENT OF PARTS 1 8 SPARK GAP GAS VALVE IGNITOR Ly ELECTRODE Y lt A WARNING Disconnect the PILOT gt RS i FLAME IN electrical power to the machine and S RAYAN SAS follow lockout tagout procedures HOOD Nyy AS A WARNING Shut off the gas before servicing the unit 44 WARNING All gas joints disturbed during servicing must be checked for leaks Check with a soap and water solution bubbles Do not use an open flame 27162 NOTE The gas valve is dual solenoid with internal Fig 13 regulator One valve supplies gas for the pilot burner and the other valve supplies gas for the main burner 1 Remove FRONT PANEL IGNITION MODULE 2 Note lead wire locations and disconnect from gas valve 7 Check for proper operation electrical power to t
26. er does not light Pilot solenoid valve malfunction Gas supply off or insufficient AON S SOF NE ee O a Spark flame sense wire connections incorrect Improper ground on pilot burner Pilot burner will not stay lit 3 Ignitor flame sense malfunction Gas pressure not within specified range or Incorrect gas type Pilot flame needs adjusted Power to temperature controller incorrect Thermocouple malfunction Temperature controller malfunction Pilot burner is lit but main burners will not light or maintain flame Gas pressure incorrect or incorrect gas type Burner orifice obstructed or malfunction Power to main burner valve incorrect Main burner valve malfunction 5 1 2 3 4 5 6 7 1 Gas pressure incorrect or incorrect gas type Burner orifice malfunction or incorrect See BURNER GAS ORIFICE CHECK High Low heat Air shutter not properly adjusted radiant burner only Thermocouple malfunction Temperature controller not properly calibrated Page 25 of 26 F45533 1014 VCCG Series Heavy Duty Gas Griddle TROUBLESHOOTING INFRARED BURNER INFRARED BURNER SYMPTOM POSSIBLE CAUSE Orifice incorrect size or dirty Incorrect gas pressure Burner not lighting properly or poor burner flame _ Incorrect gas type appearance or burner flame not orange Orifice misaligned in venturi Appliance not venting properly Burner malfunction Griddle with Infrared b
27. eries Heavy Duty Gas Griddle REMOVAL AND REPLACEMENT OF PARTS Fig 11 4 Remove insulating sleeve from thermocouple wires and retain for use on replacement thermocouple Installation 1 Slide insulating sleeve over thermocouple wires 2 Apply a thin coating of heat transfer and anti seize compound to the thermocouple probe tip and mounting nut threads 3 Route thermocouple probe through the front opening in griddle frame and lay it on top of burner mounting panel 4 From rear of griddle thread thermocouple probe into the mounting hole in griddle plate and stop when probe tip touches the plate Torque the mounting nut to a maximum of 25 in lbs NOTICE Do not over tighten or damage to the thermocouple probe may occur Due to the aluminum plate core it is also possible to create a raised area over the probe if overtightened 5 Insert rear mounting tab on thermocouple shield into the support bracket on the bottom of griddle plate 6 Route thermocouple wires through the opening in burner shield assembly 7 Re install RADIANT BURNER 8 Check TEMPERATURE CONTROLLER CALIBRATION F45533 1014 PILOT RADIANT BURNER Ur Le A WARNING Disconnect the S S electrical power to the machine and N follow lockout tagout procedures a N 44 WARNING Shut off the gas before servicing the unit 44 WARNING All gas joints disturbed during servicing must be checked for leaks Ch
28. for heat Observe thermostat cycle light on front panel A If blinking there may be a problem with thermocouple or temperature controller To identify error code refer to TEMPERATURE CONTROLLER LED DIAGNOSTICS AND OPERATING STATUS B Turn temperature knob to off Access the TEMPERATURE CONTROLLER Connect power to the machine Turn power switch on OS BS 200 2 NO Verify temperature controller is receiving 120VAC at pins 1 amp 2 on connector polarity is correct and machine is properly grounded Page 17 of 26 F45533 1014 VCCG Series Heavy Duty Gas Griddle SERVICE PROCEDURES AND ADJUSTMENTS RELAY CONTACTS l p 3 a TO GAS SOLENOID VALVE TERM 1 THERMOSTAT CYCLE LIGHT 26950 Fig 34 Turn temperature knob to call for heat Verify thermostat cycle light on the front panel turns on and burner lights A _ If thermostat cycle light and burner come on but turn off within 10 seconds perform THERMOCOUPLE TEST NOTE Temperature controller will de energize internal relay if the circuitry detects an open 3 thermocouple and the thermostat cycle light will display a blink code B If thermostat cycle light and burner do not come on verify internal relay contact operation Check for 120VAC at terminals 1 amp 2 on gas solenoid valve If voltage is not present install a replacement temperature controller and perform TEMPERATURE CONTROLLER CALIBRATION IG
29. ght red LED indicates temperature controller is calling for heat internal Light i i020 EE ARETE contacts closed output is on Ignition Module Controls and monitors gas heating Generates spark to light gas at the pilot burner monitors the presence of flame and energizes the main burner solenoid valve upon a call for heat from the temperature control Module has a 10 second ignition trial time a 5 second inter purge delay before retry and will attempt to light pilot for 7 times then lockout if unsuccessful Ignitor Flame Sense Ignites pilot burner and senses the presence of a flame Provides flame sense input to Electrode the ignition module Pilot Burner When lit lights the main burner Gas Valve A dual solenoid valve with internal regulator that controls gas flow to the pilot burner and main burner Pilot solenoid valve is energized by the ignition module after power switch is turned on Main burner solenoid valve is energized by the temperature controller after the pilot safety circuit is established pilot lit and thermostat is calling for heat E Temperature knobs OFF SEQUENCE OF OPERATION a F Griddle temperature below 150 F Operation is the same for all griddle models Each 12 G Gas supply on heat zone on the griddle plate has its own temperature l controller thermostat cycle light and ignition system 2 Turn power switch ON components Refer to Griddle Wiring Diagram A
30. he machine and follow lockout tagout procedures 1 Remove FRONT PANEL 2 Disconnect ignitor cable and wire harness connector 3 Remove two screws securing ignition module to the mounting panel IGNITOR CABLE _ WIRE HARNESS CONNECTOR Duni fya 117 LEAD WIRES l gt L Fig 15 3 Disconnect compression fitting nuts 3 places and remove gas valve from griddle 4 Note position of the four compression fitting elbows and one pipe bushing on gas valve Remove fittings from valve Fig 14 4 Reverse procedure to install and verify proper operation Page 9 0f 26 F45533 1014 VCCG Series Heavy Duty Gas Griddle REMOVAL AND REPLACEMENT OF PARTS FITTINGS Fig 16 5 Install compression fitting elbows on replacement gas valve then reverse procedure to install the valve A WARNING Clean pipe threads and apply thread sealant that is suitable for use with propane gases 6 Perform GAS MANIFOLD PRESSURE ADJUSTMENT INFRARED BURNER lt A WARNING Disconnect the N electrical power to the machine and follow lockout tagout procedures 44 WARNING Shut off the gas before servicing the unit NOTE Infrared burner is removed through the front of griddle 1 Remove FRONT PANEL 2 Remove CONTROL DEFLECTOR HEAT SHIELD 3 Perform THERMOCOUPLE INFRARED BURNER removal procedure to access the thermocouple shield and remove it The shield must be removed for burne
31. nts disturbed during servicing must be checked for leaks Check with a soap and water solution bubbles Do not use an open flame 1 Remove FRONT PANEL 2 Remove CONTROL DEFLECTOR HEAT SHIELD 3 Remove burner shield BURNER SHIELD 4 Disconnect compression fitting from pilot orifice fitting Page 12 of 26 VCCG Series Heavy Duty Gas Griddle REMOVAL AND REPLACEMENT OF PARTS PILOT COMPRESSION FITTING 5 Remove pilot orifice fitting from burner 6 Tilt pilot orifice fitting to remove the orifice 7 Reverse procedure to install NOTE When installing verify orifice size is correct for gas type and is free from debris Clean the orifice with air or water only 8 Check for proper operation GRIDDLE PLATE ASSEMBLY A WARNING Disconnect the V E electrical power to the machine and x lt follow lockout tagout procedures A WARNING Shut off the gas before servicing the unit AWARNING All gas joints disturbed during servicing must be checked for leaks Check with a soap and water solution bubbles Do not use an open flame NOTICE For larger units removal and replacement of the griddle plate weld assembly should be done by more than one service technician 1 Remove FRONT PANEL 2 Remove BACK PANEL 3 Remove THERMOCOUPLE INFRARED BURNER or THERMOCOUPLE RADIANT BURNER from griddle plate Leave thermocouple wires connected at temperature controller Page 13 of 2
32. r removal clearance but the thermocouple can remain installed 4 Disconnect compression fitting from pilot orifice fitting at pilot venturi inlet on burner 5 Disconnect compression fitting from burner orifice fitting at burner venturi inlet F45533 1014 NOTICE Two wrenches may be required to disconnect compression fittings if the orifice fittings begin to turn or damage to the flexible tubing may occur Use 1 wrench on compression fitting and 1 wrench on the orifice fitting PILOT COMPRESSION FITTING COMPRESSION lt lt FITTING Fig 17 6 Disconnect the pilot and burner flexible tubing from gas valve 7 Remove screws 2 securing front of burner to frame 8 Lift burner up at the front and pull out to remove from griddle A Remove pilot orifice fitting and burner orifice fitting from burner Install on replacement burner A WARNING Clean pipe threads and apply thread sealant that is suitable for use with propane gases 9 Reverse procedure to install replacement burner 10 Check for proper operation Page 10 of 26 VCCG Series Heavy Duty Gas Griddle REMOVAL AND REPLACEMENT OF PARTS THERMOCOUPLE INFRARED BURNER ay e A WARNING Disconnect the N electrical power to the machine and follow lockout tagout procedures Removal 1 2 3 Remove BACK PANEL Remove FRONT PANEL Remove CONTROL DEFLECTOR HEAT SHIELD Note thermocouple connections
33. rminals 3 amp 4 Readings of 100 ohms or less on either solenoid indicate a shorted coil Install a replacement gas valve and verify GAS MANIFOLD PRESSURE ADJUSTMENT INFRARED BURNER Adjustment The only adjustment for the Infared burner is the gas manifold pressure Verify the pressure is set correctly as outlined under GAS MANIFOLD PRESSURE ADJUSTMENT Flame Appearance Access the infrared burner by removing BACK PANEL When the Infared burner first lights you should see a small rolling blue flame which will clear up after the burner warms Once warm a low profile orange flame is the best description of the Infared burner flame In some cases if the burner is operating correctly you may not be able to see the actual flame Instead you will see the glow of the ceramic bricks in the burner F45533 1014 e Page 20 of 26 VCCG Series Heavy Duty Gas Griddle ELECTRICAL OPERATION ELECTRICAL OPERATION COMPONENT FUNCTION Temperature Controls griddle surface temperature for the individual heat zone by monitoring Controller thermocouple input K type Temperature Probe Senses griddle surface temperature for the individual heat zone using a K type thermocouple Provides input to the temperature controller Power Switch SPST Controls power to all electrical components gas valve double regulated temperature switch controller and ignition module Thermostat Cycle When lit the li
34. urner is mounted too close to a fryer or charbroiler and the grease laden air is causing burner ports to clog If burner ports are found to be clogged install a replacement burner NOTE Grease laden air is detrimental to the life of Burner not lighting properly due to clogged ports the Infrared burner If a technician sees a griddle with Infrared burner mounted in a location close to a fryer or charbroiler please recommend to the customer to move the griddle away from the grease laden air source to prolong the life of the Infrared burner RADIANT BURNER RADIANT BURNER SYMPTOM POSSIBLE CAUSE Orifice incorrect size or dirty Air shutter not adjusted correctly or dirty Incorrect gas pressure Burner flame too yellow Orifice misaligned in venturi Appliance not venting properly Gas valve not adjusted properly or low gas pressure Low burner flame all burners E i A Incorrect gas type Low burner flame individual burner 1 Air mixture incorrect 1 Inadequate air supply Burner flame floats on burner 2 Restricted exhaust flue 1 2 3 4 Incorrect gas type 5 6 1 F45533 1014 Page 26 of 26
35. x 24 width x depth griddle plate VCCG60 60 x 24 width x depth griddle plate VCCG72 72 x 24 width x depth griddle plate INSTALLATION Generally installations are made by the dealer or contracted by the dealer or owner Detailed installation instructions are included in Installation amp Operation Manual that is sent with each unit It should be noted that an improperly installed unit especially an unleveled unit can lead to premature electrical component failures A unit that is higher in the front will cause the flue gases to vent improperly and gather in the front near the electrical components Page 3 of 26 OPERATION Detailed operation instructions are included in the Installation amp Operation Manual sent with each unit The manual is also available online at www vulcanequipment com SPECIFICATIONS Electrical 120VAC 50 60Hz 2 amp single phase 6 foot corded plug with ground provided Gas Manifold Pressure Natural Gas 4 0 W C Propane Gas 10 0 W C Incoming Gas Pressure 7 to 9 W C Natural Gas 11 to 12 W C Propane Gas Incoming pressure should not exceed 14 0 W C 0 5 PSI for either gas type Burner Types Griddles with Infrared Burners have one 24 000 BTU HR burner for each 12 of griddle width Griddles with Radiant Burners have one 30 000 BTU HR burner for each 12 of griddle width Atmospheric type U shaped aluminized steel

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