HCT-4202D HHC-2020 Service Manual.qxp
Contents
1. Acceptable Chain A is tight and easily clears crumb tray holder B A 2 Call service to have link removed Chain is loose and risks contact with crumb tray holder B Step 7 Ready the Oven for Use Standard Oven Operation Figure 8 Oven Controls Oven Controls Figure 8 1 Display The display shows current oven operation and or user programming information 2 Soft Keys Six soft keys are on the oven controls three on the left L1 L2 L3 where L1 top and three on the right R1 R2 R3 where R1 top Press a soft key to select the option command that is adjacent to it Soft keys are labeled in this manual for identification however they are not labeled on the actual oven keypad 3 Up and Down Keys When the oven is in the OVEN OFF MODE use the up key to access the CONFIG MODE page 15 Use the down key to access cooking profiles 5 8 Also press the up and down keys to adjust various oven settings see pages 13 20 by TurboChef2. Figure 1 Oven Dimensions Side 35 7 907 mm 60 1 1527 mm with extensions Figure 2 Oven Dimensions Top 48 3 1227 mm Q ds 13 0 330 sN Er 17 0 432 mm CE E 4 0 102 mm Figure 3 Oven Dimensions Front Single 13 0 Lu P um L a Dimensions Exterior Height with legs Width with extensions Depth Conveyor Length Width Single Width 50 50 Width 70 30 13 0 330 mm 17 0 432 mm 48 3 1227 mm 60 1 1527 mm 35 7 907 mm 48 3 1227 mm 20 0 508 mm 9 5 9 5 241 mm 241 mm 15 4 381 mm 102 mm 30 0 762 mm 13 0 gt 330 mm L Figure 4 Oven Dimensions Front Double i 13 0 330 mm 43 0 1092 mm 13 0 330 mm 1 13 0 330 mm Figure 5 Oven Dimensions Front Triple Electrical Specifications North America 3 Phase 208 240 VAC 50 60 Hz 40 amp current dr
3. Is the control board receiving correct pages 37 40 2 YES Verify 5 VDC is present on pin 1 of the J3 connector page 39 If not replace the control board page A 8 Correct wiring Schematics 8 NOTES COLOR CODE LINE VOLTAGE BL BLUE LINE V 208 240 RELAY BR BROWN LINE V 208 240 ER 6 2 p COLOR CODE LOWICONTROL VOLTAGE MB BK BLACK 24 VDC COMMON OR ORANGE STATUS INPUT Jo WH WHITE CONTROL OUTPUT RD RED 24VDC KEYPAD HHC 1234 101279 B 18 RED gt 3 13 gt 3 2 K7 SMART CARD CONNECTOR LEFT COOLING FANS RIGHT 100085 1 120 F 102086 103581 _ COMMANDER SL REAR CONVEYOR MOTOR AND CONTROL RIGHT RED 56 100877 WHITE lt t 25 558 M 3 YELLOW sees 5 IS 1120 V WPE WHITE GRAY BLACK 101211 VOLTAGE MODULE 100783 OT 1 120 F 102086 18 RED 5 BLACK 1 WHITE IC 1 ORANGE GND 100506 103023 CABLE SMART A ANALOG 50 B ADV ana Be 104155 NN 1 1 C STD I O J2 DISPLAY COMMANDER SL FRONT CONVEYOR MOTOR 100193 AND CONTROL LEFT RED a WHITE a EE 100877 588 E El VFD DISPLAY FA YELLOWeezr eet L1 12 U V WPE
4. Check the I O control r YES board BMSC and blower motor wiring pages 37 38 Remove obstruction or if motor page A 6 lower A 8 upper between windings and Do resistance measurements chassis agree with values on FNO Replace the BMSC BMSC Sege U blower motor motor windings resistance page A 6 table Figure 36 2 lower A 8 NO YES YES NO Y Y Er upper See page 28 See page 28 Correct wiring or replace I O Is the wiring connected properly an board Ke BMSC or Check the BMSC blower motor KE a and I O control board see page o amage 8 page A 6 E lower A 8 upper To From Description Expected Resistance Black Red Winding A B 2 3 2 8 Black White Winding A C 2 3 2 8 Red White Winding B C 2 32 8 N A Green Windings to chassis Open Figure 36 Motor Windings Resistance Table 27 ONILOOHSAIGNOYL 28 TROUBLESHOOTING Blower Motor Troubleshooting NOTE Continued from page 27 1 Verify motor spins freely Motor seized Unplug oven and correct obstruction or replace motor Motor spins freely Verify motor windings see Figure 36 page 27 2 Verify motor windings are OK Measure the resistance between windings and chassis Unplug oven and replace motor if resistances do not agree with the values in the table on page 27 If motor is OK proceed to step 3 b
5. 4 Back Off Key Depending on the mode the oven is in the back off key will return the oven to the previous screen or turn the oven off page 10 5 Idle Key The idle key activates the IDLE MODE page 11 6 Emergency Stop Key The emergency stop key shuts down the conveyor and heaters and returns the oven to the OVEN OFF MODE page 10 NOTE Depending on the temperature within the oven the cooling fans will remain on to prevent damage to critical oven components A CAUTION DO NOT use the emergency stop key as a general on off switch Doing so can damage the oven and shorten its life span NOILY43dO QHVOUNVIS 10 STANDARD OVEN OPERATION BREAKFAST DINNER BREAKFAST OVEN OFF BELTF SOAKIN 5 00 TIME LEFT 5 00 BELT R DESSERT 3 20 BREAKFAST DINNER BREAKFAST 5 00 2 00 3 20 2 00 BELT SPEED 5 00 2 00 2 30 BELTR 3 00 2 45 D LUNCH DESSERT 220 BREAKFAST TOP AIR 60 96 BELTF WARMUP SET 5 00 OVEN TCC 275F 475F BELTR 3 20 BTM AIR 60 Figure 9 Cooking Modes Cooking a Product This section explains how to cook a food product by describing the standard operation modes through which the oven progresses Figure 9 MODE 1 Oven Off MODE 2 Belt Speed Select MODE 3 Warming MODE 4 Soaking MODE 5 Cooking MODE 6 Cooling Down MODE 7 Idle NOTE MODE 7 is not part of a standard cooking cycle It only occurs when the user intervenes as describe
6. Figure 13 Smart Card Screen Accessing the Fault Count Screen From the CONFIG MODE Figure 12 press R1 to access the fault counts screen Figure 16 page 16 The oven will display the number of faults that have occurred Accessing the Setup Mode From the CONFIG MODE Figure 12 press L1 to access the SETUP The allows the user to customize several oven settings see below for more details Setup Mode Figure 17 page 16 The SETUP MODE serves four main purposes 1 To change the display temperature To change the belt direction To access the edit option screen To change the display language SA gs gt To access the info screen To access SETUP MODE press the up key from the OVEN OFF or COOLING DOWN MODE to access the CONFIG MODE and then press L1 Figure 14 Loading a Smart Card INSERT SMART CARD PRESS BACK TO EXIT SIdOW N3AO Figure 15 Insert Smart Card Screen OVEN MODES Changing the Display Temperature The oven can display the temperature in either Celsius or Fahrenheit units To change the display temperature press L1 in SETUP MODE Figure 17 Changing the Belt Direction The ovens belt s can travel from left to right or right to left To change the belt direction press L2 in SETUP MODE Figure 17 Edit Modes Select Screen The edit modes select screen Figure 19 allows the user to switch between full edit
7. wired so that if either thermostat closes power is applied to both cooling fans Troubleshooting Food Not Cooking Properly YES r Does the problem occur for all programmed recipes For example are all recipes under cooked overcooked etc NO re there any fault codes present page 25 Is the food item in the correct starting state e g frozen fresh etc YES Troubleshoot the fault s using the steps on pages 27 33 YES Ensure the L No food item is being proper ly stored pre pared before cooking pages 37 40 Are the conveyor motors CMSCs blowers BMSCs and heaters working correctly pages 23 24 Is the wire harness properly connected s the correct amount of food portion being cooked NO Replace correct the operation of the conveyor motors and or CMSCs blower and or IBMSCs heaters and or wiring harness pages 23 24 37 40 YES YES s the food item being prepared correctly and consistently For example confirm meat is sliced at correct thickness pizza dough is correct consistency etc Correctly reinstall plates plenums and nozzle A NO installed YES the plenums and nozzle plates correctly Replace the I O control board page A 8 lt
8. 240 VAC 3 PHASE OT1 MANUAL RESET BMSC 100443 Analog Speed 0 10V 1 0 COMMON ENABLE VO COM STATUS 1 0 COMMON 17 RED B 6 BLACK B 2 WHITE 10 ORANGE IGND 100516 101279 8 7 B 17 RED oA 6 C 21 WHT gt to 4 3 B 2 K6 SSR A2 ka A1 B1 B2 101281 A a Cam Cam Bjee A SIGNATURE JKPIII 6 4 08 ENGINEER PRODUCTION SCHEMATIC HHC 2020 VFD DISPLAY 3PH WYE 380 415 VAC 60 HZ 50 m GENERAL HCT SIZE CODE IDENT NO DRAWING NO 800 908 8726 5 PIN IEC60309 32 AMP VDE RATED asn nex assy a D HCT 4131 ASSY CORD P N HCT 4116 3 APPLICATION SCALE NONE REY eran 8 7 6 5 4 3 2 I RED VDC OUTPUT WHITE CONTROL OUTPUT BLACK GROUND ORANGE STATUS OUTPUT Analog 1 0 2 MOLEX 20POS CONVEYOR F VDC 0 10 CONVEYOR R VDC 0 10 BELT R BELT F 5VDC TO HALL BTM BLR 0 10VDC OUTPUT TOP BLR 0 10VDC OUTPUT J10 Mini fit Jr 39 28 8200 J8 REAR BELT1 SPEED TO HALL K7 24VDC OUTPUT K6 24VDC OUTPUT FRONT BELT2 STAT TO HALL VOLT SELECT EI E MOLEX 24POS BTM BLR STATUS INPUT BELT FRO
9. Counter Top Table Partition Above Counter Top Single Oven 17 0 432 mm Double Stack 30 0 762 mm Triple Stack 43 0 1092 mm Grill a AH 1 HDI m Deep Fryer St jj muri IU 152 mm Minimum Figure 7 Installation Near Open Heat Source 12 305 mm Minimum Cleaning Daily and Weekly Daily Cleaning Instructions Wash rinse sanitize Use only TurboChef Completely dry with clean towel 77 approved cleaner part number 103180 IN WARNING Always disconnect power before cleaning or servicing the oven IN WARNING DO NOT attempt to clean the oven until it has cooled screen reads Oven Off DM WARNING DO NOT use a water jet when cleaning the oven 12 6 CLEANING Weekly Cleaning Instructions Wash rinse sanitize Use only TurboChef approved cleaner part number 103180 4 Completely dry with clean towel DM WARNING Always disconnect power before cleaning or servicing the oven A WARNING DO NOT attempt to clean the oven until it has cooled screen reads Oven Off ZN WARNING DO NOT use a water jet when cleaning the oven Step 1 Turn the Oven Off Note
10. Extension HCT 4050 2 Smart Reader 100506 Speaker 104155 Support Top Plenum HCT 4169 1 Thermostat Cooling 102086 2 Thermostat High Limit 102075 Voltage Sensor 100783 1 Wire Harness EMI to Fan Control Conveyor Control HCT 4086 7 Wire Harness EMI to Fan Control Power Supply Conveyor Control Wire Harness Fuse Block to 4086 6 Wire Harness Block to High Limit HCT 4086 3 Wire Harness Fuse Block to SSR 4 LG HCT 4086 9 Wire Harness Fuse Block SSR 4 25 LG 4086 8 Wire Harness High Limit to Distribution Block HCT 4086 4 Wire Harness High Voltage Main HCT 4086 1 Wire Harness LOV HCT 4163 1 Wire Harness SSR to Distribution Block HCT 4086 2 This page intentionally left blank A 3 SININOdMWO N3AO DNIDVY1d434 A 4 APPENDIX REPLACING OVEN COMPONENTS Replacing Items Outside of End Bells N WARNING Before removing or replacing any oven component thoroughly read the safety instructions found at the front of this manual and Oven Systems pages 21 24 Adhere to all precautions and warnings outlined in these sections as failure to do so could result in serious injury or death A CAUTION Before removing installing any component make sure it is disconnected from the wire harness where applicable NOTE Only single belt ovens will have the Gear M
11. Reset and determine why it tripped over temp blower ailure etc Check if the high limit probe or RTD is damaged or defec tive replace if needed page 8 YES Replace the control board page A 8 Is the wiring orrect pages 37 40 2 NO Correct wiring pages 37 40 YES NO Replace the high limit thermostat page A 6 F9 Troubleshooting BELT FAULT Total Belt Run Failure YES Are there any obstructions that are blocking the conveyor s movement or is the conveyor belt damaged NO Remove obstruction or replace repair the conveyor and restart the oven Is the F9 fault code still present YES Page 4 Remove the chain guard Is the chain damaged or obstructed in any way NO Correct wiring pages 37 40 Open the right end bell also open the left end bell if split belt conveyor Is the wiring correct from the conveyor motor NO to the conveyor motor controller to the control board correct pages 37 40 Check that the CMSC settings correctly I YES s the conveyor motor CMSC or I O control board damaged or YES Remove obstruction if necessary replace the chain Replace parts as EE 2 n gs une defective See Figure 37 for
12. WHITE GRAY BLACK RTD 102088 MRED J5 BMSC 1 240 VAC gt BLACK H 2 3PHASE 1 00443 creen 11 Analog Speed 0 10V 1 HCT 4205 COMMON 2 3 2 180 240 recon 4 STATUSOK 5 A TURBOCHEF TECHNICAL SUPPORT 3 VAC IN COMMON 6 800 908 8726 B 17 RED C 21 WHT HCT 4205 MANUAL RESET 100516 101279 oA 8 o B Now O 4 _ S E 101281 A Be p i El 1 20 AMPS CLASS 100599 A F2 20 AMPS CLASS CC 100599 III GENERAL HCT DASH NEXTASSY USED ON APPLICATION HCT 4130 1 1 REVISIONS LTR DESCRIPTION DATE APPROVED A PRODUCTION RELEASE JKP UPDATED TERMINAL BLOCKS B UPDATE 558 CROUZET D s 240 VAC 3 PHASE 100443 17 RED COMMON 6 BLACK B 2 WHITE B 10 ORANGE 1 0 COMMON B T I L I I I 1 OO tS nn mm 1 I I 653626 6 3 I I I elo SOS J Ses BE TURBOCHEF A DRAWN TECHNOLOGIES INC TITLE CHECKED SCHEMATIC HHC 2020 JKPIII 6 4 08 VFD DISPLAY ENGINEER 3PH DELTA 208 240 VAC 60 HZ 50 PRODUCTION 1 SIZE CODE IDENT NO DRAWING NO HCT 4130 SCALE NONE KEY HCT41301 3 37 SDILVWIHDS 38 SCHEMATICS NOTES COLOR CODE LINE VOLTAGE BL BLUE LINE V 208 240 REL
13. increments up to 100 Flex option enabled the user can only increase the air speed by up to an additional 15 Press the down key to decrease the air speed in 5 increments down to 10 Flex option enabled the user cannot decrease the air speed by more than 15 Press the soft key again to exit the air controls NOILVH3dO qQdVdNV1S 14 STANDARD OVEN OPERATION This page intentionally left blank Oven Modes Config Mode The CONFIG MODE Figure 12 serves four main purposes 1 To access the smart card screen 2 To access the fault count screen 3 To access the SETUP MODE 4 To access the TEST MODE service use only To access the CONFIG MODE press the up key from the OVEN OFF MODE or COOLING DOWN MODE if menus 5 8 are shown on the display press the up key twice Smart Card Screen Loading a Menu The smart card screen allows the user to Load a menu from smart card to oven Save a menu from oven to smart card To load or save a menu 1 Press L3 Figure 12 to access the smart card screen Figure 13 2 Insert a smart card into the smart card slot Figures 14 and 15 with the gold chip facing the front of the oven 3 Load or save a menu Press R1 to load a menu from the smart card to the oven Figure 13 Press R2 to save a menu from the oven to the smart card Figure 13 FAULTS CONFIG MENU SMARTCARD TEST MODE LOAD FROM CARD SMARTCARD SAVETO CARD
14. A 9 8 INS L1 inserts a space DEL deletes the selected character gt R2 moves the cursor to the right lt L2 moves the cursor to the left Press R3 to save the changes or L3 to cancel SIdOW N3AO OVEN MODES Initiating a Burn In Test NOTE Burn in tests are for manufacturing use only DO NOT initiate a burn in test unless expressly instructed by TurboChef initiate a burn in test Press L2 Figure 22 page 17 on screen 2 of the TEST MODE The burn in test Figure 28 runs the oven for 45 minutes to ensure correct oven operation When the burn in test completes the burn in complete screen Figure 29 will appear Press any key to send the oven to the COOLING DOWN MODE If the burn in test fails the applicable error code will appear and the oven will return to the COOL ING DOWN or OVEN OFF MODE Erasing Oven Settings To erase oven settings press L3 Figure 22 page 17 on screen 2 of the TEST MODE to access the erase screen Figure 30 From the erase screen Press 1 1 to erase all menu belt and configuration settings Press L2 to clear the fault counters Press L3 to clear the operational hours The oven will ask you to confirm the action Figure 31 shows the confirm clear faults screen press R3 to confirm or the back off key to cancel DM CAUTION Settings fault counts and hours cannot be retrieved once the erase option is confirmed BREAKFAST TO
15. 2 Take a resistance reading of the motor windings and use Figure 33 to verify that the resistance readings are correct 3 If the resistance readings are correct reconnect the motor wiring and then apply line voltage to the unit and check for voltage applied to the motor windings 4 If no voltage is present ensure the is operating properly see below 5 If CMSC is operating properly inspect the wire harness for damage or shorts From Description Expected Resistance White Grey Winding A B 305 3150 White Black Winding A C 805 315 Q Grey Black Winding B C 305 315 Q White Grey or Windings to Black Green chassis Openi Figure 33 Conveyor Motor Ohm Chart 6 Ifthe wire harness is intact and undamaged and the CMSC is operating properly the gear drive is damaged or defective and must be replaced Gear Drive Conveyor Motor Speed Controller CMSC The CMSC converts single phase line voltage to a three phase output and controls the speed of the gear drive via frequency output The CMSC receives an input voltage 0 10 VDC from the control board and adjusts the frequency output to the gear drive Testing Procedure ZN WARNING Capacitors within the CMSC can retain charge after power is removed Exercise extreme caution when handling the terminals N WARNING DO NOT connect incoming AC power to output terminals U V or W This will seriously damage the Conve
16. 229 280 233 170 237 040 240 900 244 740 248 570 252 380 256 180 9G 09 109 209 309 409 1509 60 70 80 90 100 0 100 000 103 900 107 790 111 670 115 540 119 400 123 24 127 070 130 890 134 700 138 500 100 138 500 142 290 146 060 149 820 153 580 157 310 161 040 164 760 168 460 172 160 175 840 200 175 840 175 910 183 170 186 820 190 450 194 070 197 690 201 290 204 880 208 450 212 020 43009 212 020 215 570 219 120 222 650 226 170 229 670 233 170 236 650 240 130 243 590 247 040 Figure 32 Temperature Resistance Relationship Class B Resistance 0 C 100 0 Alpha 0 003850 The Conveyor System This section contains information about the following components as well as testing procedures Gear Drive Conveyor Motor Gear Drive Conveyor Motor Speed Controller CMSC Gear Drive Conveyor Motor The conveyor motor is a 1610 RPM 3 phase motor with a built in Hall Effect Sensor The speed of the conveyor motor is controlled by the voltage frequency applied to the windings from the CMSC The Hall Effect Sensor sends a DC pulse back to the control board to verify motor speed The control board uses these pulses to determine the output DC voltage to the CMSC Single belt HhC 2020 ovens contain one gear drive Dual belt ovens contains two gear drives Testing Procedure 1 Disconnect line voltage from the unit
17. 40 YES s wire harness properly gt connected 1 YES Correctly reinstall the nozzles and plenums NO Replace element s ed to the I O control board No wiring connections Fix connection Is the damaged Replace the I O control YES Y Test the RTD page 22 for resistance temperature chart or defective page 22 board page A 8 29 DNILOOHSIIINOUL 30 TROUBLESHOOTING YES 7 chamber s anything obstructing regular airflow into the Remove the YES obstruction NO roubleshoot F1 ault pages 7 28 Place the oven in TEST ODE and test the heaters page 17 Do measure ments show the heaters are ok page 24 Replace the NO defective heater s YES Is che solid state relay functioning NO Replace the SSR page A 7 Is the RTD damaged or defective page 22 YES Y Test the RTD page 22 for resistance temperature chart Replace the 1 O control board page A 8 Troubleshooting F6 EC OVER TEMP Are the air filters on the back of the oven clean YES Clean the air filter s page 7 Access TEST
18. DUT 104105 x4 Spacer 10 192 x 3 8 OD X 7 16 AL 104111 x4 Screw 10 32 x 1 PHTRHD SS 102941 x4 Blower Motor Controller CON 7013 Nut KEPS HEX 6 32 EXT Tooth CRES 102961 x4 Cable Display Power 2 Pin 100193 None None Cable Display Ribbon 100184 None None Cable Smart Card Reader 100182 None None Nut KEPS HEX 6 32 EXT Tooth CRES 102961 x4 Control Board CON 7002 Standoff 6 x 1 2 long Thru Round 101869 x4 Conveyor Controller 103581 Nut KEPS HEX 6 32 EXT Tooth CRES 102961 x4 Nut Plate 1 4 20 HCT 4107 x2 Conveyor Motor HCT 4120 Screw 1 4 20 x 3 4 HEX Washer HD Serrated CRES 101396 x4 Sprocket Chain 035 5 Bore 10 T 103562 Nut KEPS 4 40 EXT Tooth 102960 4 Display VED NGC 3023 Standoff Round 12 ID 25 OD x 50 long 101954 x4 EMI Filter 100539 Nut KEPS HEX 46 32 EXT Tooth CRES 102961 x2 Power Supply 101211 Screw M3 x 8mm long PPHD SS 101688 x3 Power Supply Bracket HCT 4103 Nut KEPS HEX 6 32 EXT Tooth CRES 102961 x2 Relay Mechanical K7 101279 Nut KEPS HEX 6 32 EXT Tooth CRES 102961 x2 RTD HHC 6517 2 Screw SH MTL 8 x 1 2 Serrated PHTRH 101668 Nut 466 32 Serrated Hex Flange 100902 x3 Smart Card Reader 100506 Screw 6 32 x 38 PFH 100DEG SS 101430 x3 Standoff 6 32 x 1 2 M F Hex Zinc 101941 x3 Clip Speaker Mounting HCT 4104 Speaker 104155 Screw 8 x 3 8 PH MOD TRUSS CRES 101682 x2 Thermostat 102086 Screw 6 x 1 2 PPHD DRL PT SS 10
19. Screw SH MTL 8 x 1 2 Serrated PHTRH 101688 x22 Heater Front HCT 4162 Screw SH MTL 8 x 1 2 Serrated PHTRH 101688 x22 Heater Cover HCT 4032 Screw SH MTL 8 x 1 2 Serrated PHTRH 101688 x14 Jetplate HCT 4099 one one Keypad HHC 1234 one None Leg 100785 one None Plenum HCT 4020 one None Power Cord Retainer 15 9211 Screw SH MTL 8 x 1 2 Serrated PHTRH 101688 x2 Shelf Tray HCT 4050 one None Support Top Plenum HCT 4169 Screw SH MTL 8 x 1 2 Serrated PHTRH 101688 x4 Back Panel Power Cord Retainers Figure A 3 Rear Oven Components Air Filter Back Panel Finger Guard __ 9 des gt A 5 SLNINOdWOD N3AO DNIDVId18 XIaN3ddv A 6 APPENDIX REPLACING OVEN COMPONENTS Replacing Items Left End Bell N WARNING Before removing or replacing any oven component thoroughly read the safety instructions found at the front of this manual and Oven Systems pages 21 24 Adhere to all precautions and warnings outlined in these sections as failure to do so could result in serious injury or death AN CAUTION Before removing installing any component make sure it is disconnected from the wire harness where applicable NOTE Single belt ovens will not have a Conveyor Motor in this location Instead the Gear Motor Cover will be installed see page A 4 Thermostat High Limit Conveyor Controller Conveyor Motor Distribu
20. The front hatch of a stacked oven will contact the oven beneath it preventing it from opening BREAKFAST TOP AIR 8096 COOKING SET 475F BELT 10 00 AIR 80 BREAKFAST COOLING DOWN LUNCH WINGS BREAKFAST OVEN OFF Step 2 Remove Outer Oven 5 Components Unlatch lo all the way access interior components of a stacked oven the hatch must entirely removed 1 Co Step 3 Remove Inner Oven Components Sl m A en LL SE D gp X a 8 e 1T m F e E H mmm E H gt 1 Step 4 Clean Oven Components n y b Replace filters if damaged or torn O d fi II DNINV312 8 CLEANING Step 5 ReinstallOven Components
21. YES NOS NO Ensure that the correct amount is being cooked not more or less than the recipe specifies Ensure that the food item is properly prepared YES the problem occur EVERY time the food item is cooked 35 ONILOOHSATENOYL 36 TROUBLESHOOTING YES Is wiring from the control board to the display including the ribbon cable YES Is 5 VDC present on pin 1 o the J3 connector page 39 YES Replace the display and ribbon cable page A 8 Does the keypad beep when a key is pressed Replace the fuses page A 7 gt Correct wiring If cable is damaged replace it Replace the power supply page A 8 NO Replace the I O con trol board page A 8 NO Check wiring from the necessary pages 37 40 power supply to the control board Correct wiring if YES Is the keypad cable properly connected to the control board page A 8 Replace the keypad page A 8 If the problem persists or if beeps occur when buttons are pressed but commands do not regis ter on the display replace the control board I Is the 24 power supply receiving power YES s the power supply output 24 VDC
22. is cleared from the display when the high limit switch is manually reset F9 Belt Fault This fault occurs if the conveyor belt fails to start or the conveyor is dragging The fault is cleared from the display if the conveyor belt starts when initiating cooking DNILOOHSIIINOUL 26 TROUBLESHOOTING F1 Blower Failure v v v Pages 27 28 F2 Low Temp During Cook 29 F4 Emergency Stop N A F5 CC Over Temp 30 F6 EC Over Temp 31 F7 Failure v 32 F8 High Limit Tripped 32 F9 Belt Fault 33 Figure 35 Fault Code Table NOTE All fault codes except F2 and F9 will terminate cooking upon discovery Any fault that occurs will be logged in the in the fault count log page 15 except E6 Fault Code Troubleshooting From TEST you can test separate oven components to help diagnose an issue To access TEST MODE see page 17 Troubleshooting F1 BLOWER FAULT 17 NO are the status indicators at location 7 and 8 present page 18 Access the TEST MODE Open Left End Open the Right Bell Is a fault code present on the End Bell Is a fault code present on the Is the blower motor spinning freely YES Y NO necessary replace blower
23. 1687 x2 Voltage Sensor 100783 Nut KEPS HEX 6 32 EXT Tooth CRES 102961 SLN3NOdWOD N3AO DNIDY1d434 XIONIddV For service or information WITHIN NORTH AMERICA CALL Customer Support at 1 800 90TURBO or OUTSIDE NORTH AMERICA CALL 1 214 379 6000 or Your Authorized Distributor Part Number HCT 4202 Revision E May 2009 Country Code NA EU Global Operations 4240 International Pkwy Suite 105 Carrollton Texas 75007 USA 1 214 379 6000 PHONE 1 214 379 6073 FAX Customer Support 1 800 90TURBO 1 214 379 6000 turbochef com
24. 2 and the ovens temperature at the beginning of warmup was not within less than 25 F 14 C of the ovens set temperature Goes 4 once the oven has reached the temperature defined by the selected cooking profile when the user presses the back off key and the oven temperature is above 150 F 66 C or MODE if the oven temperature is below 150 F 66 Mode 4 Soaking Mode during which the oven has completed warming up and automatically allows an additional five minutes for the oven cavity surfaces to warm Happens When MODE 3 completes within 5 F 3 C of set point Goes To MODE 5 when soaking completes MODE 6 when the user presses the back off key Mode 5 Cooking Mode during which the oven is ready to cook The user can place food on the conveyor to cook or edit cook settings if the full edit or flex option is enabled See page 12 for more information on full edit and flex options Happens When MODE 4 completes The user presses the idle key up key down key or any soft key during MODE 7 Goes To MODE 6 when the user presses the back off key MODE 7 when the user presses the idle key MODE 3 if the temperature drops 25 14 or more below the set point Mode 6 Cooling Down Mode during which the heater shuts off to allow the oven to cool Happens When The user presses the back off key from MODE 3 and the oven te
25. AY BR BROWN LINE V 208 240 PINOUT 6 2 COLOR CODE LOW CONTROL VOLTAGE BK BLACK 24 VDC COMMON OR ORANGE STATUS INPUT Jo WH WHITE CONTROL OUTPUT RD RED 24VDC KEYPAD HHC 1234 ANALOG B ADV I O C STD I O J2 DISPLAY 100193 VFD DISPLAY 64 X 128 DOTS 100505 102088 MB gt MM gt TURBOCHEF TECHNICAL SUPPORT SMART CARD CONNECTOR 100506 103023 CABLE SMART CARD c7 c20 SPEAKER 104155 FRONT CONVEYOR MOTOR AND CONTROL LEFT RED 100877 WHITE YELLOW RR B 18 RED 13 WHT LEFT COOLING FANS RIGHT 100085 S 1 120 102086 OT 1 120 F 102086 103581 L1L2U V WPE J5 M2 BLACK M3 WHITE GREEN 240 VAC 3 PHASE HCT 4205 BMSC 100443 Analog Speed 0 10V 1 0 COMMON ENABLE 18 RED 5 BLACK 1 WHITE COMMANDER SL REAR CONVEYOR MOTOR AND CONTROL RIGHT RED HITE 100877 YELLOW 103581 COMMANDER SL 02 Rev RL1 REV WHITE GRAY BLACK 101211 L1L2U V WPE F1 20 AMPS CLASS CC 100599 F2 20 AMPS CLASS CC 100599 RL2 DWG NO HCT 4131 REVISIONS LTR DESCRIPTION DATE A PRODUCTION RELEASE APPROVED JKP
26. F5 CC OVER TEMP 30 Fault Code Troubleshooting F6 EC OVER TEMP 31 Fault Code Troubleshooting F7 FAULT 32 Fault Code Troubleshooting F8 HIGH LIMIT TRIPPED 32 Fault Code Troubleshooting F9 BELT FAULT Total Belt Run Failure 33 Non Fault Code Troubleshooting Cooling System Issue 34 Non Fault Code Troubleshooting Food Not Cooking Properly 35 Non Fault Code Troubleshooting No Display Screen is Blank 36 Non Fault Code Troubleshooting No Keypad Input 36 Schematics Oven Schematic Delta 4 Pin Plug Configuration 37 Oven Schematic Wye 5 Pin Plug Configuration 38 Pin out 39 CMSC Parameters 40 Appendix A Replacing Oven Components Comprehensive Part List A 1 Replacing Items Outside of End Bells A 4 Replacing Items Left End Bell A 6 Replacing Items Right End Bell A 8 Improper installation adjustment alteration service or maintenance of this equipment can cause property damage injury or death Thoroughly read the installation operating and maintenance instructions before Important Safety Information Please Read First installing or servicing this equipment Strictly adhere to the following safety information to reduce the risk of D ti EL Et Ep D Damage to the oven Damage to property near the oven Personal injury Burns Fire Electric shock General Safety Information o Use this appliance only for its intended uses as described in this manual Only qualified service personnel s
27. MODE page 5 __ 5 the oven hot NO 7 Is the sta Open the left and right end bells Are the cooling fans running YES NO Check for Dirt or debris in the cooling fan blades A heat source near the filter tus indicator at position b YES page 18 less than 65 T NO Replace the I O control board page A 8 Are the cooling fans receiving correct voltage page 37 40 YES Check the Is the cooling fan wiring pages vEs Qjhermostat closed 97 40 5 3 page A 5 Replace the cooling fans 31 ONILOOHSAIGNOYL 32 TROUBLESHOOTING Replace the RTD page A 8 YES J s the RTD damaged or defective page 22 pen the right end bell approximately 100 at 32 F 0 C See page 22 for ohm temperature chart YES board NO gt Is the RTD connected properly to the HNO I O control e NO Is the RTD open Using an ohmmeter Dose measure at the control board pages 37 YES 40 RTD should measure pages 37 40 Correct wiring pages 37 40 Replace the I O control board page A 8 e all the contacts Is the high limit thermostat tripped page 21 HNO closed on the high limit thermostat
28. NOT overcook food NOILVINHOHNI ALAAVS ii SAFETY INFORMATION Preventing Oven Damage o When servicing this appliance do not tear insulation to get to components Rather find the edge of the insulation and remove the tape that holds it in place Clean the oven daily Clean the oven only with TurboChef Oven Cleaner DO NOT clean with a water jet DO NOT allow cleaning solution or water to remain in the cook cavity longer than necessary El Grounding Instructions A WARNING Improper grounding increases the risk of electric shock This appliance must be grounded The cord is equipped with a grounding wire and plug which in the event of an electrical short circuit reduce the risk of electric shock by providing an escape wire for the electric current The wire must be plugged into an outlet that is properly installed and grounded Consult a qualified electrician or serviceman to determine whether or not the appliance is properly grounded DO NOT use an extension cord If the power supply cord is too short request a qualified electrician or serviceman to install an outlet near the appliance Power Cord Replacement To avoid potential hazards only the manufacturer its service agent or a similarly qualified person should replace a damaged power cord Specifications and Installation
29. NT GND TO HALL 3 lt I o E a z c lt c D BTM BLR GND ELEC GAS SELECT GND ELECTRIC GAS SELECT BTM BLR ENABLE TOP BLOWER ENABLE Advanced UO Mini fit Jr 39 28 8240 TOP BLR STATUS INPUT Standard I O Pins 8 and 19 are the 24V Power Supply input J9 el K4 K5 PID OUTPUT K6 HX 2 OUTPUT SPEAKER OUTPUT O 24 VDC INPUT Q K4 K5 HX1 24VDC OUT K7 CONV DIR OUTPUT HI LIMIT INPUT 0 U MOLEX 22POS Mini fit Jr 39 28 8220 Title ess Frl HHC 4130 A HHC 2020 I O CONTROL PINOUTS Date JUNE 16 2008 Drawn by MJP JKP Filename Sheet 2 of 3 C D 39 SDILVWIHDS 40 SCHEMATICS Control Techniques Commander SL EMERSON Conveyor Motor BGFM12 240TD2NX SMALL FRAME Dual or Single Conveyor 2 VERSON Passward 0 Stock password should change in Production Pram Setting Note 01 0 0 Minimum set speed in Hz 02 120 Maximum set speed in Hz O3 00 Accelleration rate in sec 100Hz 0 0 Decelleration rate in sec 100Hz AV Drive confguration 0 15 Motor rated current 1610 Motor rated speed Note RPM of motor not output 208 Motor rated voltage 0 63 Motor power factor OPEn Parameter access 0 Start Stop logic 0 0 Jog referance OFF Enable negative prreset speeds 0 0 Preset Speed 1 0 0 Preset Speed 2 0 0 Preset Speed 3 0 0 Preset Speed 4 0 Securty Setup 0 Power up keypad referance no Load defaults 1 Ramp mode select 2 Stopping mode se
30. P AIR 80 Burn In in Progress 475F 475F Time Left 42 37 BELTF 5 00 BELT R 3 20 10096 BTM AIR 100 96 BURN IN COMPLETE OVEN TCC 475F PRESS ANY KEY TO CONTINUE Viewing the Serial Number The serial number is located at the bottom of screen 2 of the TEST MODE Figure 22 page 17 N CAUTION Write this number down before replacing the I O control board Replacing the I O control board will erase this number from the ovens memory If replacing a control board see page 19 for re entering the serial number L1 ERASE MENUS BELTS CONFIGS L2 CLEAR FAULTS CLEAR HOURS Figure 30 Erase Screen L1 L2 CLEAR FAULTS L3 Continue Figure 29 Burn In Complete Screen Figure 31 Confirm Clear Fault Counts Screen Oven Systems The Control System This section contains information about the following components Control Board Display EMI Filter Fuses High limit Thermostat Keypad Power Supply 24VDC Relay K6 Heaters Relay K7 Conveyor Direction Relay Solid State RTD Smart Card Reader Speaker Thermostats 120 F Close on Rise Wire Harness This section also contains testing procedures for the following components Power Supply 24VDC Relay K6 Heaters Relay K7 Conveyor Direction RTD Control Board The control board is powered by the 24 VDC power supply and sends con
31. PTURBOCHEF Service Manual FOR THE TURBOCHEF HIGH h CONVEYOR 2020 OVEN O 2008 2009 TurboChef Technologies Inc For furtber information call 800 90TURBO Or 1 214 379 6000 2008 2009 TurboChef Technologies Inc The information contained in this manual is important for the proper installation use maintenance and repair of this oven Follow these procedures and instructions to help ensure satisfactory baking results and years of trouble free service Errors descriptive typographic or pictorial are subject to correction Specifications are subject to change without notice Please carefully read this manual and retain it for future reference Table of Contents Safety Information Important Safety Information Please Read First General Safety Information Reducing Fire Risk Preventing Oven Damage Grounding Instructions Power Cord Replacement Specifications and installation Dimensions Electrical Specifications Packaging Certifications Oven Construction Installation Instructions Delivery and Initial Inspection Lifting the Oven Oven Location and Placement Stacking Ovens Installation Near Open Heat Source Ventilation Requirements Cleaning Daily and Weekly Daily Cleaning Instructions Weekly Cleaning Instructions Standard Oven Operation Oven Controls Cooking a Product Editing a Cooking Profile Changing a Cooking Profile Name Adjusting the Belt Speed Adjusting the Temperature Adj
32. The back and front convection heaters are rated at 6750 watts at 208 VAC with a resist ance of 14 4 Ohms The heaters are controlled by the K4 K5 solid state relay and can be tested in TEST MODE see page 17 To From Description Expected Resistance Black Brown Winding A B 2 3 2 8 Q Black White Winding A C 2 32 8 0 Red White Winding B C 2 32 8 Q N A pue 7 chassis Figure 34 Blower Motor Ohm Chart Motor Windings Troubleshooting Overview of Troubleshooting This section contains information on the following Fault code descriptions Fault code troubleshooting Non fault code troubleshooting Fault Code Descriptions Fault codes are logged in a fault counter page 15 for troubleshooting Upon completing the service call and restoring successful operation of the oven the technician should clear all faults see page 20 F1 Blower Failure This fault is displayed if for three consecutive times the control board does not receive the status OK signal from the BMSC The fault is cleared from the display if the blowers successfully restart upon starting a cook cycle or in TEST MODE F2 Low Temp During Cook The oven will emit a beeping noise and display this fault if the cook cavity temperature falls 25 14 below the current cooking profiles set temperature and the fault will be logged in the fault counter The fault is cleared from the fault display if
33. ach service technician keep a backup copy Test Mode The TEST MODE serves the following purposes To test individual oven components view oven information To reset oven parameters To input a new serial number To access the TEST MODE 1 Press the up key from the OVEN OFF or COOLING DOWN MODE to access the CONFIG MODE 2 Press the R3 soft key Figure 12 page 15 3 Input the password 2 4 3 3 Figure 23 The TEST MODE consists of two screens Figures 21 and 22 Use the up and down keys to navigate between them SERIAL NUMBER EC 82F 208V RUN 65432 HR IDLE 12345 HR SOFTWARE VERSION Figure 20 Info Screen L1 HEAT CTRL TEST PAGE 1 BELT CTRL TOP AIR BOT AIR D EC27 450F 45 100 23 9V 0 0V L3 Figure 21 Test Mode Screen 1 From screen 1 of the TEST MODE the user can Access the heat control screen Access the belt control screen Manipulate the top and bottom blowers View the status indicators From screen 2 of the TEST MODE the user can Inputa new serial number nitiate a burn in test Erase oven settings and fault counts Change the maximum temperature from 550 to 600 or vice versa NOTE DO NOT change this setting unless instructed by TurboChef Enable disable maintenance mode The maintenance mode will show temperature heater operation and other diagnostics while the oven is running Accessing the Heat Control Screen Fr
34. aw Max Input 14 4 kW wire supply NEMA 15 50P plug 4 pin IEC60309 available by special order 50 amp max circuit breaker protection Europe Asia 220 240 VAC 3 Phase 220 240 VAC 50 60 Hz 40 amp current draw Max Input 14 4 kW wire supply IEC60309 4 pin plug 64 amp max circuit breaker protection Europe Asia 380 415 VAC 3 Phase 380 415 VAC 50 60 Hz 20 amp current draw Max Input 14 4 kW 5 wire supply IEC60309 5 pin plug 32 amp max circuit breaker protection NOILYTIVLSNI ANY SNOI1VO2IJI23dS SPECIFICATIONS AND INSTALLATION Packaging All ovens are packaged in a double wall corrugated box with integrated wooden skids All international ovens shipped via Air or Less than Container Loads are packaged in wooden crates Certifications Oven Construction 430 stainless steel front top sides and back Cool to touch covers and panels Stainless steel interior 20 inch wide cook chamber Installation Instructions The TurboChef HAC 2020 conveyor oven is designed and certified for safe operation when installed in accordance with local and or national codes It is the owner and or installer s responsibility to comply with any codes that may exist Install this oven according to the policies and procedures outlined below and throughout this manual N WARNING Death injury and equipment damage can result from improper installation or installation of a unit damaged during shipment
35. be stacked on top Stack the top oven on the bottom oven If stacking three ovens stack only the middle oven at this point Remove the 4 screws marked A in Figure 6 below Align each bracket with the holes in the bottom oven and reinstall the screws marked A in Figure 6 below Remove the 2 screws marked B in Figure 6 below Align each bracket with the holes in the top oven and reinstall the screws marked B in Figure 6 below If stacking three ovens repeat steps 2 6 above to stack the top oven to the middle oven Ensure each stacked oven is secured to the oven beneath it via two stacking brackets one on each side a B Bracket A e e Bracket e A NN e e e e A Suis NN e CL o o e e Figure 6 Stacked Ovens NOILVTIVLSNI SNOILVD141D3dS SPECIFICATIONS AND INSTALLATION Installation Near Open Heat Source See Figure 7 When placing a TurboChef oven near an open heat source strictly adhere to the following If the oven is being placed near a grill or stove a divider must exist between the oven a
36. control board 2 Place the RTD in a bowl of ice water for 2 minutes Take a resistance reading of the RTD 4 If RTD resistance is not 100 RTD is defective and must be replaced NOTE Use Figure 32 to determine resistance readings at temperatures other than freezing Smart Card Reader The smart card reader allows the oven operator to load a menu firmware update from a smart card A menu that already exists in the oven can also be saved to a smart card For instructions see page 15 Speaker The speaker is separate from the control board and provides audible feedback to the oven oper ator whenever a key is pressed or a fault occurs Thermostats 1209F Close on Rise The cooling fan thermostats actuate the cooling fans when the temperature in either end bell reaches or exceeds 1209F 499C Wire Harness The wire harness distributes power to the oven s electrical components See pages 37 40 for schematics oF 0 20 40 60 80 100 120 140 160 180 200 0 90 03 97 390 101 740 106 070 110 380 114 680 118 970 123 240 127 500 131 740 135 970 200 135 970 140 180 144380 148 570 152 740 159 900 161 040 165 170 169 290 173 39Q 177 470 400 177 470 181 540 185 600 189 640 193 670 197 690 201 690 205 67 209 640 213 600 217 540 600 217 540 221 470 225 380
37. d 2 page 24 and 40 motor winding resistance To From Description Expected Resistance White Gray Winding A B 305 315 White Black Winding A C 305 315 Gray Black Winding B C 305 315 White Gray or Black Chassis Windings to chassis Open Figure 37 Motor Ohm Chart Motor Windings not Hall Effect Sensor 33 ONILOOHSAIGNOYL 34 TROUBLESHOOTING Non Fault Code Troubleshooting This section provides troubleshooting tips for issues that may occur independently of an oven fault Troubleshooting Cooling System Issue Is the oven in an area of moderate temperature 120 F 49 C or cooler 2 YES NO Y Does the oven have Relocate oven to room to ventilate cooler area not tightly enclosed by other appliances Move oven to open area __ remove items that are i in close proximity YES Y Is the air filter dirty and or Clean or replace air YES 9 the vent obstructed filter and or remove the obstruction NO Replace the cooling s the cooling fan No fan thermostat page thermostat closed A 6 and A 8 YES Check wiring for problems Is line voltage NO gt pages 37 40 applied 208 240 VAC to the Replace the cooling fans cooling fan page 5 NOTE There are two thermostats per unit They
38. d on page 11 Mode 1 Oven Off Mode during which all cooking components are off and the oven temperature has receded below 150 F 66 C but the display and keypad remain on The user can access cooking profiles 1 4 on this screen 1 or press the down key to access cooking profiles 5 8 BTM AIR 100 TOP AIR 80 COOKING BTM AIR 100 6 BREAKFAST DINNER COOLING DOWN OVEN TCC 425F TOP AIR80 SET 475F DESSERT BREAKFAST TOP AIR30 BELTF OVEN IDLE SET SET 475 5 00 PRESS ANY KEY 475 BELTR 3 20 BTM AIR 30 Happens When Power is supplied to the oven The oven completes MODE 6 The user presses the down key while accessing the CONFIG MODE refer to page 15 for more information Goes To MODE 2 when the user selects a cooking profile soft keys L1 L3 or R3 CONFIG MODE when the user presses the up key Mode 2 Belt Speed Select Mode during which the user selects the desired belt speed NOTE If a different key is pressed the oven will ask if you wish to continue or return to the belt speed select screen If you select continue the oven will not save the belt speed Happens When The user selects a cooking profile from MODE 1 6 Goes MODE 3 Mode 3 Warming Mode during which the oven warms to the preset cooking temperature defined by the cooking profile that was selected Happens When A selection is made from MODE
39. e 1 Oven Location and Placement IN WARNING Death injury and equipment damage may result from improper positioning N WARNING DO NOT stack ovens more than three high It is the operator s responsibility to ensure the oven is properly positioned on countertop TurboChef will not warrant any damage or injury to ovens that fall off countertops due to improper placement Proper placement of the oven will enhance long term operator convenience and satisfactory performance Be sure to place the oven in an area accessible for proper operation and servicing The surface on which the oven is placed must be at least 30 762 mm deep and capable of supporting 200 lbs 90 7 kg per oven The manufacturer shall not assume liability for damage or injury resulting from the improper installation of this equipment including temporary or unstable work stations or countertops The oven must be installed level front to back and side to side For additional stability the oven legs may be bolted to the countertop if desired ZN WARNING DO NOT use this appliance with out the legs installed When stacking the legs must be installed on the bottom oven only Stacking Ovens ZN WARNING Make sure all HhC 2020 ovens are unplugged before stacking A WARNING DO NOT stack ovens more than 3 high IN WARNING DO NOT attempt to lift the oven with fewer than 2 people Remove the legs from the oven s that are going to
40. elow 3 Status indicators TBTB should be visible when motors are on in TEST MODE If any of these indicators are not present for example TB B a Disconnect control wiring b Ground the Status OK wire of the motor controller that is being tested pin 5 on the J2 connector to chassis reference wiring schematic of the blower motor controllers on pages 37 40 c Keeping the wire grounded check terminals on the control wiring plug for 0 10 VDC control voltage reference drawing of Control Pinouts page 39 while incrementing blower speed in TEST MODE see Manipulating Top and Bottom Blowers page 18 and page 17 for an illustration of TEST MODE d If DC voltage is present throughout all speed settings in TEST MODE see Manipulating Top and Bottom Blowers page 18 and page 17 for an illustration of TEST MODE replace motor controller If not check harness and or replace 1 board Troubleshooting F2 LOW COOK TEMP Restart the oven access the TEST MODE and turn on both the top and bottom blowers Are the status indi cators at location 6 7 8 and 9 present pages 18 19 NO roubleshoot the blowers pages 7 28 I YES Are the nozzles and plenums correctly installed T YES Are all elements heating ensure amp draw is correct page 24 YES Open the right end bell Is the RTD properly connect page 37
41. ent to that setting Figure 10 is The down key moves backward through the disabled and no menu editing is allowed available characters e g A 9 8 When the full edit option is enabled for a given INS L1 inserts a space setting that setting is fully customizable and DEL R1 deletes the selected character changes are saved once the oven returns to the OVEN RI DEDBEEBOENE DOWN gt R2 moves the cursor to the right When the flex option is enabled for a given setting lt L2 moves the cursor to the left that setting is customizable within flex option limitations as described in the following sections 3 Press save R3 to save the changes or cancel and changes will reset when the oven returns to the L3 to cancel any changes OVEN OFF or COOLING DOWN MODE NOTE The flex option does not apply to editing a profile name This section assumes that the full edit option is enabled except where otherwise noted and that a cooking profile and belt speed have been selected PROFILE 1 TOP AIR 80 L1 INS BELT F 661614 lt 5 00 475F L2 PROFILE 1 BELT R 3 20 BTMAIR 100 CANCEL Figure 10 Cooking Screen Figure 11 Name Change Screen Adjusting the Belt Speed The High h Conveyor Oven can accommodate either one or two conveyor belts The oven will automatically detect the number of conveyor belts installed and display the option to change the speed of each conve
42. h Limit 102075 Screw M4X 0 7 x 8 PPHD INT Tooth SS 101672 x2 HCT 4116 3 or Power Cord HCT 4116 2 None None Relay Mechanical K6 20 Amp Fuse Class CC Fuse Block Blower Motor Controller Power Cord Relay Solid State K4 K5 Figure A 6 Left End Bell Components Back Panel Removed SLNINOdWOD DSNIODV dad XIGNAddV A 8 APPENDIX REPLACING OVEN COMPONENTS Replacing Items Right End Bell N WARNING Before removing or replacing any oven component thoroughly read the safety instructions found at the front of this manual and Oven Systems pages 21 24 Adhere to all precautions and warnings outlined in these sections as failure to do so could result in serious injury or death AN CAUTION Before removing installing any component make sure it is disconnected from the wire harness where applicable Voltage Sensor Relay Mechanical K7 Blower Motor Assembly Conveyor Controller RTD Display VFD Power Supply and Bracket Card Reader Speaker Control Board EMI Filter Figure A 8 Right End Bell Components Back Panel Removed Item Part Number Hardware Description Hardware Part Number s Nut 1 4 20 Serrated HEX Flange Plated Steel 100906 x4 Screw 10 32 x 5 8 SKT HD PLT 104104 4 Blower Motor Assembly HCT 4205 Standoff 10 32 x I F F 3 8 HEX
43. hould service this appliance Contact the nearest authorized service El El El El El facility for examination repair adjustment Always ensure the oven is disconnected from the power supply before servicing repairing or adjusting any components or parts DO NOT place the cord near heated surfaces DO NOT store or use flammable vapors or liquids e g gasoline in the vicinity of this appliance DO NOT allow children to use this appliance DO NOT place corrosive chemicals or vapors in this appliance It is not designed for industrial or laboratory use DO NOT operate this appliance if it Has a damaged cord or plug Is not working properly Has been damaged or dropped DO NOT cover or block any openings on this appliance DO NOT store this appliance outdoors DO NOT use this appliance near water DO NOT immerse this appliance or any of its components e g cord plug etc in water DO NOT let the cord hang over the edge of a table or counter Reducing Fire Risk If materials inside the oven ignite or if smoke is observed 1 Turn off the oven Disconnect the power cord or shut off power at the fuse circuit breaker panel Carefully attend the oven if paper plastic or other combustible materials are placed inside the oven to facilitate cooking DO NOT leave items in the cook cavity when the oven is not in use DO NOT cook items wrapped in cling wrap or plastic film a DO
44. lect OFF Dynamic V to f select 2 Catch a spinning motor select n 0 Terminal T4 output mode select 3 Maximum switching freq in KHz 60 0 Motor rated frequency 40 Auto Number of motor poles 41 Fd Voltage mode select 42 3 0 Low frequency voltage boost The rest are read only HHC 2020 I O CONTROL PINOUTS Number HHC 4130 JUNE 16 2008 Drawn MJP JKP 3 of 3 Appendix Replacing Oven Components Replacing Oven Components A WARNING Before removing or replacing any oven component thoroughly read the safety instructions found at the front of this manual and Oven Systems pages 21 24 Adhere to all precautions and warnings outlined in these sections as failure to do so could result in serious injury or death Part Details Locate the Part Here Outside of Left End Bell Right End Bell Item Part Number Per Oven End Bells Page A 6 Page A 8 Page A 4 Air Filter HCT 4067 2 Back Panel HCT 4105 2 Blower Motor Assembly HCT 4205 2 Blower Motor Controller 100443 2 Blower Wheel 104107 2 Cable Display Power 2 100193 1 V Cable Display Ribbon 100184 1 Cable Smart Reader 100182 1 Chain Conveyor HCT 4143 1 Chainguard Left Split belt config only HCT 4038 1 Chainguard Right 4041 1 Channel HCT 4076 1 Control B
45. mperature is above 150 F 66 C or from MODES 4 5 or 7 Goes To MODE 1 when the oven temperature has receded below 150 F 66 C MODE 2 when the user selects a cooking profile Mode 7 Idle Mode during which both blowers are reduced to 30 and the belt speed reduces to 15 minutes to save power All other oven components remain the same NOTE Press the idle key once to begin a countdown time of the countdown is determined by the current belt speed Press the idle key twice to immediately place the oven into IDLE MODE Happens When The user presses the idle key from MODE 5 Goes To MODE 5 when the user presses the idle key up key down key or any soft key MODE 6 when the user presses the back off key NOILVd3dO GYVGNVLS 12 STANDARD OVEN OPERATION Editing a Cooking Profile Changing a Cooking Profile Name To edit a cooking profile the oven must be in the 1 From the cooking screen Figure 10 press COOKING MODE and the full edit or flex option L1 to access the name change screen must be enabled for each option you want to edit Figure 11 For more information on selecting between full edit rigid and flex options for each editable setting see 2 Change the name of the cooking profile Edit Modes Select Screen on page 16 The p key moves forward through the ilable characters e g A B C When the rigid option is enabled for a given setting the soft key adjac
46. nd the open heat source with a minimum of 6 152 mm between the oven and the divider If the oven is being placed near a fryer a divider must exist between the oven and fryer with a minimum of 12 305 mm between the oven and the divider The height of the divider must be greater than or equal to the height of the oven s page 1 Verify oven location has a minimum 10 254 mm clearance on top and minimum 2 51 mm of clearance on each side Partition Above Counter Top Single Oven 17 0 432 mm Double Stack 30 0 762 mm Triple Stack 43 0 1092 mm 1 Ventilation Requirements The HhC 2020 should be operated underneath a ventilation hood except where local laws or codes allow for use without a ventilation hood unless the oven is a UL certified ventless model available upon request For more information or to order a ventila tion hood contact 800 90TURBO 1 214 379 6000 or your local distributor The HhC 2020 ventless model oven has been tested by Underwriters Laboratory which has concluded that this oven can be installed and operated ventless for all food items except for fatty raw proteins such as bone in skin on chicken uncooked hamburger fat laden steaks etc NOTE In no event shall the manufacturer assume any liability for damages or injuries resulting from installations that are not in compliance with local and national codes and with the instructions previously listed
47. oard CON 7002 1 Conveyor Controller HHC 6630 2 2 Motor 4120 2 Conveyor Single Belt HCT 4140 1 Conveyor Split Belt 50 50 HCT 4096 1 Conveyor Split Belt 70 30 HCT 4115 1 Cooling Fan TC3 0433 2 Crumb 4045 2 Display VFD NGC 3023 1 v Distribution Block HCT 4141 1 Filter 100539 2 Eyelid HCT 4028 2 v Finger Guard 100086 2 Fuse 20 Amp Class 100599 2 Fuse Block 103548 1 Gear Motor Cover Single belt config only HCT 4142 1 Hanger HCT 4148 1 Hatch HCT 4209 1 Hatch Latch 100777 2 Heat Slinger 102708 2 Heater Back HCT 4161 1 Heater Front 4162 1 Quantities will differ depending on conveyor type SLN3NOdWOD N3AO DSNIODV dad XIaN3ddv A 2 APPENDIX REPLACING OVEN COMPONENTS Part Details Locate the Part Here Outside of Lett End Bell Right End Bell Item Part Number Oty Per Oven End Bells Page A 6 Page A 8 Page A 4 Heater Cover HCT 4032 1 Jetplate HCT 4099 2 Keypad HHC 1234 1 Leg 100785 4 Plenum HCT 4020 2 4116 3 Power 2 1 60309 Power Cord Retainer 15 9211 2 Power Supply 101211 Power Supply Bracket HCT 4103 Relay Mechanical K6 101279 1 Mechanical 7 101279 1 Relay Solid State K4 K5 NGC 3005 1 RTD HHC 6517 2 1 Shelf Tray Crumb
48. om screen 1 of the TEST MODE Figure 21 press L1 to access the heat control screen Figure 24 NOTE This mode is intended for setting gas pressures on other TurboChef conveyor ovens Even though the HhC 2020 is electric this mode can be used to energize the heaters to verify proper operation and readings Press L1 to turn the heaters on Press to turn the heaters off L1 INPUT SN MAX TEMP 550 TEST PAGE 2 d BURN IN MAINT ON C ERASE CLEAR ENTER PASSWORD 2433 HEAT FULL LIGHT HEAT CTRL TCC 475F HEAT OFF HEAT LOW D EC27 450F 45 100 23 9V 0 0V SIdOW Figure 24 Heat Control Screen 18 OVEN MODES Accessing the Belt Control Screen Top Display Line From TEST MODE screen 1 Figure 21 page 17 The top display line shows values relating to press L2 to access the belt control screen Figure oven components The letters a c and e below 25 Use this mode to verify the belts work and on Figure 26 indicate the different top correctly The number after the belt speed display line status indicators which are shows the pulses read by the HES The explained below percentage is the amount of drive being asked a Shows which key is currently pressed of the CMSC 100 10VDC U up key D down key To change the belt s setting a 211 Press L1 to turn the belts off b 12 Press L2 to access the belt F controls c 13 Press L3 to access the belt R control
49. or storage A WARNING Do not install an oven suspected of damage Improper installation or the installation of a unit damaged during shipment or storage may void the Limited Warranty Delivery and Initial Inspection All TurboChef ovens are shipped so as to prevent damage Upon delivery inspect the shipping container for external damage Any evidence of damage should be noted on the delivery receipt which must be signed by the driver Upon removing the oven from its shipping carton check for any possible damage Make note of any damage and contact the shipping company to file a claim Carriers will accept claims for concealed damage if notified within fifteen days of the delivery and if the shipping container is retained for inspection TurboChef does not assume responsibility for any loss or damage suffered in transit The carrier assumes full responsibility for delivery in good order when the shipment is accepted However when necessary TurboChef can assist in filing a claim Lifting the Oven IN WARNING The oven weighs approximately 195 lbs 88 5 kg Two or more people are required to lift it Position one or more persons on either side of the oven Lift from the bottom The countertop must be at least 30 762 mm deep and capable of supporting 200 lbs 90 7 kg per oven Once properly positioned on the counter plug the oven into a wall mounted electrical receptacle See Electrical Specifications on pag
50. otor Cover Dual belt ovens will have the Chainguard Left Chainguard Left Gear Motor Cover not shown Keypad Chain behind guard and Chainguard Right Crumb Tray t Conveyor Hatch Figure A 1 Front Oven Components Figure A 2 Inner Oven Components Item Part Number Hardware Description Hardware Part Number s Air Filter HCT 4067 None None Back Panel HCT 4105 Screw 10 32 x 5 PPH INT Tooth SS 101460 x2 Chain Conveyor HCT 4143 None None Chainguard Left HCT 4038 None None Chainguard Right HCT 4041 None None Channel HCT 4076 Screw SH MTL 8 x 1 2 Serrated PHTRH 101688 x4 Conveyor Single HCT 4140 Chain 35 52 Links With Master Link Endless HCT 4143 Conveyor Split Belt 50 50 HCT 4096 Chain 35 52 Links With Master Link Endless HCT 4143 x2 Conveyor Split Belt 70 30 HCT 4115 Chain 35 52 Links With Master Link Endless HCT 4143 x2 coin an CONS Crumb Tray HCT 4045 one None Eyelid HCT 4028 Screw Thumb w W HD 1 4 20x1 2 SS 101752 x2 Finger Guard 100086 one None Gear Motor Cover HCT 4142 ut 10 32 SERR HEX FLNG SS 100903 x4 Hanger HCT 4148 Screw SH MTL 8 x 1 2 Serrated PHTRH 101688 x4 Hatch HCT 4209 Screw Thumb w W HD 1 4 20x1 2 SS 101752 x2 Hatch Latch 100777 Screw SH MTL 8 x 1 2 Serrated PHTRH 101688 x3 Heater Back HCT 4161
51. re Voltage Total time the oven has been on Total time the oven has been idle Firmware version To access the info screen press R3 within the SETUP MODE Figure 17 Updating the Firmware From the oven off or cooling down screen 1 Insert the gray smart card see Figure 14 page 15 with the gold chip facing the front of the oven If multiple smart cards are required they will be labeled in sequence ensure the correct sequence is followed 2 From the COOLING DOWN or OVEN OFF MODE press and hold the idle key until the oven resets approximately 5 seconds The display will go blank until the upload is complete ENTER PASSWORD lt 6633 gt Figure 18 Password Screen 1 NAME FULL EDIT MODES TEMP FLEX L2 SELECT CBELT RIGID AIR FLEX Figure 19 Edit Option Screen When the oven beeps one long high tone the load was successful If a second card was provided insert it 4 When the oven restarts and the display turns on the update is complete Remove the smart card from the oven NOTE If the update is unsuccessful the display will remain off and the oven will beep one long low tone If this occurs repeat the above procedure If the update fails multiple times a smart card may be damaged Please note that the oven will be inoperable until a successful update is performed As such TurboChef reinforces proper handling of smart cards to help prevent static damage and recommends that e
52. re harness is intact and undamaged the power supply is damaged or defective and must be replaced page A 8 Relays K6 Heaters and K7 Conveyor Direction The K6 and K7 relays are double pole double throw relays with a 24 VDC coil The coil resist ance is 585 and the contact rating is 30A at 240 VAC When 24 VDC is applied to the coil the normally open contacts 7 amp 4 or C amp NO close applying line voltage to energize the heaters SIW31SAS NJAO K6 or reverse the conveyor direction K7 OVEN SYSTEMS Testing Procedure 1 Disconnect line voltage to the unit 2 Take a resistance reading of the coil 3 If coil resistance is correct 585 a Apply line voltage to the unit b Check for 24 VDC at the coil of the relay when the unit is calling for heat c Check the state of the contacts If the normally open contacts 7 amp 4 or C amp NO are closed when coil voltage is applied the relay is functioning normally If the normally open contacts 7 amp 4 or C amp NO are not closed when coil voltage is applied the relay must be replaced page A 7 and A 8 4 If the coil resistance is incorrect replace the relay Relay Solid State K5 K4 Heaters The solid state relay is a 240 VAC dual 40 amp relay and switches power to the heaters RTD The RTD is a resistance temperature detector used to detect the cavity temperature Testing Procedure 1 Disconnect the RTD from the I O
53. rigid and flex for profile name belt speed temperature and air For more information on the different edit options see Editing a Cooking Profile on page 12 To access the edit modes select screen 1 Press L3 Figure 17 to access the password screen Figure 18 2 Input the password 6 6 3 3 by pressing the soft keys adjacent to the numbers To change the edit option Figure 19 Press L1 to select full edit or rigid for the profile name Press L3 to select full edit rigid or flex for the belt speed Press to select full edit rigid or flex for the profile cook temperature setting Press R3 to select full edit rigid or flex for the air setting Changing the Display Language NOTE Feature is not available on all oven models FAULT COUNTS 1 0 6 0 2 0 F7 0 F3 0 F8 0 F4 0 F9 0 F5 0 F10 0 Figure 16 Fault Counts Screen L1 DEGS F ENGLISH SETUP MENU L2 VOL3 L3 EDIT RIGID FLEX INFO Figure 17 Setup Mode From the setup menu screen Figure 17 press R1 to set the language to English French German or Spanish Changing the Speaker Volume Press R2 fig 17 to change the volume of the speaker The volume can be set to either 0 1 2 or 3 where 0 is mute and 3 is the loudest setting Info Screen The info screen Figure 20 is used to display the following information in an easy to access place Serial number Electrical compartment temperatu
54. s F eR g R2 h R3 Manipulating the Top and Bottom P Blowers I idle key Figure 21 page 17 S emergency stop key The user can change the speed of the top and b Shows the temperature within the electrical bottom blowers independently To change the compartment temperature displayed in speed of the blowers Celsius only 1 From screen 1 of the TEST MODE press R1 c Shows the temperature within the cook to access the top blower or R2 to access the chamber bottom blower d Not applicable to this oven 2 Press the up or down keys to change the speed of the selected blower in 596 e Shows the voltage of the power supply increments The percentage of air cannot go below 1096 or above 10096 Viewing the Status Indicators LS L1 a b Figure 26 E The status indicators are located at the bottom GE 58 of TEST screen 1 the heat control Lat screen The status indicators are split into two display lines 123 45 6 7891011 Figure 26 Status Indicator Explanation BELTS OFF BELT F BELT CTRL 10 25 1920 3696 BELT R 12 30 1343 31 L3 CANCEL Figure 25 Belt Control Screen Figure 27 Enter New Serial Number Screen Bottom Display Line The bottom display line shows enabled inputs and outputs on the control board The numbers 1 10 indicate the different bottom display line which are explained below NOTE A or displayed on the bottom display line denote
55. s values that are in the off mode or closed 1 represents the real time clock pulse used by the control board to time oven functions The R will blink once per second 2 The 1 shows that the rear belt s conveyor motors Hall Effect Sensor HES is sending a pulse to the control board 3 The 2 shows that the front belts conveyor motors HES is sending a pulse to the control board 4 The will only appear if the voltage is below 220 5 The signifies that this is an electric oven 6 The O will only be missing during an F8 High Limit Tripped fault 7 The first is displayed while the top air BMSC reports an ok status to the control board 8 The first B is displayed while the bottom air BMSC reports an ok status to the control board 9 The second T is displayed while the top air BMSC is enabled and receiving a command 10 The second B is displayed while the bottom air BMSC is enabled and receiving a command 11 If the F is displayed the belts are traveling right to left If the F is not displayed the belts are traveling left to right Entering a New Serial Number Figure 27 1 Press L1 Figure 22 page 17 on screen 2 of the TEST MODE to access the serial number input screen Enter the new serial number The up key moves up through the available characters i e A B C The down key moves down through the available characters i e
56. steps 4 7 to manipulate other parameters as needed The Convection System This section contains information about and testing procedures for the following components Blower Motor Blower Motor Speed Controller BMSC Heaters Blower Motor The convection motor is a brushless AC switch reluctance type Its top speed is 7100 RPM at 1 HP The motor is controlled by a proprietary controller Testing Procedure 1 Disconnect line voltage from the unit 2 Make sure the motor spins freely 3 Take a resistance reading of the motor windings and use Figure 34 to verify the resistance readings are correct 4 If the resistance readings are correct reconnect motor wiring and then apply line voltage to the unit and check for voltage applied to the motor windings 5 If no voltage is present ensure the BMSC is operating properly see below 6 If BMSC is operating properly inspect the wire harness for damage or shorts pages 37 38 7 lf wire harness is intact and undamaged and the BMSC is operating properly the blower motor is damaged or defective and must be replaced page A 7 lower A 8 upper Blower Motor Speed Controller BMSC The motor controller is proprietary and will only operate the convection motor described above The motor controller is controlled on command from the I O control board and a 0 10VDC speed command from the I O control board See pages 27 28 for troubleshooting Heaters
57. the cook cavity temperature returns to within 25 F 14 C of the set cooking temperature during cooking or in TEST MODE F4 Emergency Stop This fault is displayed when the emergency stop key is pressed This fault acts as a counter that logs how many times the emergency stop key page 9 has been pressed The fault is cleared from the display once the oven is restarted 25 F5 CC Over Temp This fault is displayed if the cook cavity s tem perature reaches or exceeds 625 F 329 4 C The fault is cleared from the display once the oven is restarted and the temperature recedes below 625 329 4 C F6 EC Over Temp This fault is displayed if the temperature within the electrical compartment reaches 149 F 65 C however the oven will not shut down and the fault will not be logged in the fault count log unless it reaches 158 F 70 The fault is cleared from the display when the electrical compartment temperature recedes below 149 F 65 F7 RTD Failure This fault is displayed if the RTD circuit is open shorted reads above 645 F 340 5 C or reads below 40 F 40 C The fault is cleared from the display if the circuit is closed or the temperature reads within 645 F 340 5 C and 40 F 40 C F8 High Limit Tripped This fault is displayed if the high limit switch trips The switch trips when the high limit probe reads approximately 600 F 315 5 C The fault
58. tion Block EMI Filter Blower Assembly _ Figure A 4 Left End Bell Components Left End Bell Open Heat Slinger Blower Wheel Figure A 5 Blower Motor Assembly Detail Item Part Number Hardware Description Hardware Part Number s Nut 1 4 20 Serrated HEX Flange Plated Steel 100906 x4 Screw 10 32 x 5 8 SKT HD PLT 104104 x4 Blower Motor Assembly HCT 4205 Standoff 10 32 x F F 3 8 HEX PLT 104105 x4 Spacer 10 192 x 3 8 OD X 7 16 AL 104111 x4 Screw 10 32 x 1 PHTRHD SS 102941 x4 Blower Motor Controller CON 7013 Nut KEPS HEX 6 32 EXT Tooth CRES 102961 x4 Blower Wheel 104107 None None Conveyor Controller HHC 6630 2 Nut KEPS HEX 6 32 EXT Tooth CRES 102961 x4 Nut Plate 1 4 20 HCT 4107 x2 Conveyor Motor HCT 4120 Screw 1 4 20 x 3 4 HEX Washer HD Serrated CRES 101396 x4 Sprocket Chain 035 5 Bore 10 T 103562 Distribution Block HCT 4141 ut 10 32 SERR HEX FLNG SS 100903 x2 EMI Filter 100539 ut KEPS HEX 6 32 EXT Tooth CRES 102961 x2 Fuse 20 Amp Class CC 100599 None None Fuse Block 103548 Nut 8 32 HEX SS 101000 Heat Slinger 102708 None None Relay Mechanical K6 101279 ut KEPS HEX 6 32 EXT Tooth CRES 102961 x2 Relay Solid State K4 K5 NGC 3005 Screw 8 x 3 8 PH MOD TRUSS CRES 101682 x2 Thermostat Cooling Fan 102086 Screw 6 x 1 2 PPHD DRL PT SS 101687 x2 Thermostat Hig
59. trol voltage to each relay See schematics pages 37 40 24 VDC can be measured at the J9 connector pins 19 and 8 Display The vacuum fluorescent display is the primary user interface and is powered by the control board using 5 Its input voltage can be test ed at 7 pins 1 and 3 page 39 EMI Filter The EMI filter helps suppress the amount of RF noise emitted by the oven also filtering noise from entering the controls 21 Fuses The control circuit is ultimately protected by two 20 amp class CC fuses which are in the line voltage circuit incoming voltage The fuses are designed to blow in case of an over current situa tion High Limit Thermostat The high limit thermostat is a 3 pole manual reset thermostat with a trip point of 572 F 300 C The thermostat interrupts power to the heater elements Keypad The keypad is an 11 key membrane switch Power Supply 24VDC The power supply converts line voltage to 24 VDC Line voltage is connected to terminals L amp N The output 24 VDC is on terminals V and V Testing Procedure 1 Check for line voltage at terminals L amp N 2 If correct voltage is present check output V amp V for 24 VDC with output wires disconnected 3 Ifvoltage is present with output wires disconnected and not present when the wires are connected inspect the wire harness for damage or shorts pages 37 40 for schematics 4 Ifwi
60. usting the Top and Bottom Air Oven Modes Config Mode Smart Card Screen Loading a Menu Accessing the Fault Count Screen Accessing the Setup Mode Setup Mode Changing the Display Temperature Changing the Belt Direction Edit Modes Select Screen Changing the Display Language Changing the Speaker Volume Info Screen Updating the Firmware Test Mode Accessing the Heat Control Screen Accessing the Belt Control Screen Manipulating the Top and Bottom Blowers Viewing the Status Indicators NS S N NN tD N to ra ra 15 15 15 15 15 16 16 16 16 16 16 16 17 17 18 18 18 Entering a New Serial Number 19 Initiating a Burn In Test 20 Erasing Oven Settings 20 Viewing the Serial Number 20 Oven Systems The Control System 21 Control Board 21 Display 21 EMI Filter 21 Fuses 21 High Limit Thermostat 21 Keypad 21 Power Supply 24VDC 21 Relays K6 Heaters and K7 Conveyor Direction 21 Relay Solid State K5 K4 Heaters 22 RTD 22 Smart Card Reader 22 Speaker 22 Thermostats 1209F Close on Rise 22 Wire Harness 22 The Conveyor System 23 Gear Drive Conveyor Motor 23 Gear Drive Conveyor Motor Speed Controller CMSC 23 The Convection System 24 Blower Motor 24 Blower Motor Speed Controller BMSC 24 Heaters 24 Troubleshooting Overview of Troubleshooting 25 Fault Code Descriptions 25 Fault Code Troubleshooting F1 BLOWER FAULT 27 28 Fault Code Troubleshooting F2 LOW COOK TEMP 29 Fault Code Troubleshooting
61. yor Motor Speed Controller 1 Ensure that no faults appear on the display of the CMSC during oven operation The control will display the frequency output if the system is operating correctly 2 Check the input voltage on terminals L1 amp L2 200 240 VAC and the DC voltage input on terminals amp AI 0 1 10 3 If no input voltage is present inspect the wire harness for damage or shorts pages 37 38 4 If DC control voltage is not present check voltage output at I O board If no voltage is present at the I O board replace the board J10 A13 to J9 C6 front belt J10 A14 to J10 A6 rear belt 5 Check ohms of motor Figure 33 6 If wire harness is intact and undamaged the CMSC is damaged or defective and must be replaced 23 SIN31SAS NJAO OVEN SYSTEMS Accessing Parameters ZN WARNING DO NOT perform this procedure unless instructed by TurboChef Changing the parameters to other than those preset by TurboChef can damage critical oven components NOTE Motor Rated Speed 07 is RPM of motor before gearbox not after 1 Open the right end bell page 8 2 Locate the CMSC page A 8 3 Press the key 4 Use the W and Wkeys to navigate the parameters See page 40 5 Press the M key to access the parameter shown on the CMSC display 6 Use the and Y keys to manipulate the parameter 7 Press the key to return to the parameter selection 8 Repeat
62. yor belt independently 1 From Figure 10 press the soft key adjacent to the conveyor belt you wish to adjust press L2 for the front belt Belt F or L3 for the rear belt Belt R 2 Adjust the time it takes for the conveyor belt to completely cycle through the oven The up key increases bake time in 5 second increments up to 15 minutes Flex option enabled the user can only increase the time up to an additional 15 seconds The down key decreases bake time in 5 second increments down to 35 seconds Flex option enabled the user cannot decrease the time by more than 15 seconds 3 Press the soft key adjacent to the belt that was adjusted to exit the belt speed controls Adjusting the Temperature 1 Press R2 Figure 10 to access the temperature controls 2 Adjust the temperature range is 300 550 F 149 288 Press the key increase the temperature in 5 F 5 C increments Flex option enabled the user can only increase the temperature up to an additional 10 F 5 C Press the down key to decrease the temperature in 5 F 5C increments Flex option enabled the user cannot decrease the temperature by more than 10 F 5 C 3 Press R2 again to exit temperature controls Adjusting the Top and Bottom Air Press R1 Figure 10 to access the top air controls or R3 to access the bottom air controls Adjust the air speed Press the up key to increase the air speed in 5
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