Service Manual 01/16/2007
Contents
1. J o B 370593 FrontCover J C 370594 j FrntElementCovr D 3705887 Finger Housing Bottom Right Marked B2 E 370578 Columnating Panel Bottom Right amp Left F 370595 Finger Cover Bottom Right amp Left a 37050 4 Turn Fastener H S370596 Air Wash Assembly J l 370596 X Air Wash Assembly o J 370581 ________________ 370579 ColumnatingPanel Top Right L 370585 Finger Housing Top Right Marked T2 370597 DriveShftCover o 37598 TopCover o P 3705887 Finger Housing Top Left Marked T1 R 370579 ColmnatigPanel Top Left S 370580 Top Left o T 370596 Air Wash Assembly OO U 370596 Air Wash Assembly J o Z V 370595 Finger Cover Bottom Left OO W 370578 Columnating Panel BottomLeft X 370585 Finger Housing Bottom Left Marked B1 Y 369373 Receptacle Snap In O IIO Tim e Z DTF 1960 amp 1980 Series Service Manual GENERAL VIEW MODEL 1960 SERIES w iT o O IN AA DTF 1960 amp 1980 Series Service Manual 22 CONTROL BOX MODEL 192. TEMPERATURE CALIBRATION Calibration is to be performed with oven control set at 650 F with the belt speed set at 4 00 minutes and all IR s off The cavity temperature is to be measured in the center of the oven cavity with the temperature sensing device resting on the conveyor belt Calibration must be done with all covers fingers air washes and conveyor belt in place to ensure accuracy for Gecko equipped DTT ovens 1 If oven is not on turn oven on Display will light up and run through start up sequence After start up sequence display will scroll Select Program Press and release the button labeled 3 Display will scroll Menu Item 3 To set the oven for calibration simply press and hold the button with the arrow pointing up up arrow After about 5 seconds the display will change to read the correct temperature set point and the light next to the button number will become solid rather than flashing If the up arrow button is not released the set point will begin to go up unless it is already at maximum value Use the up down arrows to adjust this set point to 650 Next press and release button 3 to bring up the belt speed set point The light on this button should now be solid to indicate that this option is currently active Adjust the up down arrows to read 4 00 Press and release button 2 and the light by this button will come on Use up down arrows to change this setting to 0 zero Above
3. 1 o E 370883 Capacitor conveyormotor F 870519 BrakeLMotr gt 2 397000 jCovenrearconrobox _ 0 0 AH 370462 Motor conveyor o gt 9 I 370601 Top controlbox DJ O 36960 Spring compression _____ P 36940 Couplingsleeve o DTF 1960 amp 1980 Series Service Manual CONTROL BOX VIEW MODEL 1980 SERIES vecino DTF 1960 amp 1980 Series Service Manual 33 34 REAR VIEW MODEL 1980 SERIES B 237060 HeatingElement______________ D 9370604 Electrical Panel RH o o o E 370603 Cover HeatngElement 1 F 370546 Fuse8A Ga 37842 JFuseHoder gt A LA Not Shown I 369422 Relay MainFan o o o R 369129 X FuseHolde S 35700 Thermostat Hi Limit Not Shown Not Shown Z AA BB DD 370607 Main Fran DTF 1960 amp 1980 Series Service Manual REAR VIEW MODEL 1980 SERIES DTF 1960 amp 1980 Series Service Manual I R ELEMENTS VIEW MODEL 1980 SERIES S N 8001209 AND ABOVE S N 8001208 AND BELOW Model Description Part Number 1981 3 0602 1982 3 0616 36 DTF 1960 amp 1980 Series Service Manual MAIN FAN ELEMENTS VIEW MODEL 1980 SERIES S N 8001209 AND ABOVE Model Description 1981 19
4. IR Top1 s 4 Heaters 1 amp 2 only Bottom 2 Heater 2 only Bottom e Heaters 2 amp 3 Top 1 Top 2 Top 3 Heaters 1 amp 3 only IR oo All Bottom IR Top1 Top 2 Top 3 Heaters 2 amp 3 only Heaters on IR Bottom Heater 3 only Bottom 7 Factory Default e e All top IR Heaters are on Top 1 B 2 factory default DTF 1960 amp 1980 Series Service Manual 13 3 Set TEMPERATURE UNITS C or F a Press and hold BUTTON 1 for 20 seconds to change the C or F value b To change again repeat step a 4 oet TEMPERATURE DISPLAY between REAL and SETPOINT a Press and hold BUTTON 4 for 20 seconds b To change again repeat step a 5 Set LANGUAGE SELECTION a Press and hold BUTTON 2 for 20 seconds Use UP and DOWN BUTTONS to select language SUBSET POINTS MENU 1 To enter SUBSET MENU press and hold the TIME BUTTON 3 for 20 seconds BUTTON 3 toggles between parameter names and values a If parameter name is displayed use the UP and DOWN arrow buttons to browse through previous next parameter in the list b If parameter value is displayed use the UP and DOWN arrow buttons to change the parameter value to within the allowed limits 2 Select the parameter to be adjusted by pressing the TIME BUTTON 3 when the parameter is displayed di Use the UP and DOWN arrow buttons to change the value within the allowed limits See Chart below 4 To EXIT the menu press TIME BUTTON
5. Shut off power at main breaker Remove control box top front panel and rear control box cover Disconnect all wiring from control and mark all wiring for reassembly Hemove mounting screws from main control and remove main control board This is a two piece control be sure to replace both parts when the control is replaced Reassemble in reverse order and check system operation DTF 1960 amp 1980 Series Service Manual CONVEYOR DISASSEMBLY FOR CLEANING Pull conveyor out the right end Place on table or work surface CONNECTING LINKS IN THREE PLACES Iii IIIIIIUOWN 1 Locate connecting links on the conveyor belt turn belt to place the links on the top left end of the conveyor approximately 8 203mm from the shaft 2 You can easily remove the connecting links by grasping them with a pair of pliers and slipping the eye of the connecting link over the wire of the other links Also notice the direction of the other links The belt will have to be reinstalled with the opening facing the same way 3 Carefully pull out the belt rolling it up as you go After you have it removed it may be placed in a pan of detergent solution to soak Rinse with clean water CONVEYOR REASSEMBLY Conveyor Belt Installation CDHVETOCR DAVE 1 Put conveyor belt back on by setting the rolled belt to the left of the conveyor and thread approximately 2 3 of the belt over the bottom of the slider bed 2 Put the loose end of the bel
6. amp 1980 Series Service Manual SCHEMATIC DIAGRAM EXPORT MODELS 3dAl 3140020WU3Hl 21 JLVLS 01105 310d 2 AV138 IUSH MITA AVJU YIMOd NIVA 42018 1VNIWH3I 181 YI u31V3H IIH 9H NOI 1V3S091 JNOO IS LIMIT HOTH NJAO 1VISOWHS3HL 11 NIVN u31V3H EH IH J1VIS 01105 AVIJU 2S 298 12S SIOYINOD Y SU31V3H YOLJON ISNI 84 64 14 ONISUJAJU HOAJANOJ HOLIMS 25 JNIT 331113 1133 NIVA HOLIMS IS NJAO 1081302 N23 NVI NIVN AVI3U 28 0155384405 ISION 1102 131 NIVW Av13U 18 NOISSIUAANS ISTON 40113949 69 pO O YOLOW HOAJANOJ TOBYINOD ONOV WX3 HOAJANOJ YOLIOVAVO 22 TOULNOD YIWBOISNVEL LUX YOAFANOD YOLOW NVI NIVH YOLIOVAVO 19 SJINNIW O 4V130 INIL 01 NIVW BOLOM IN 14155384 HIV HOLIMS SAV 134 NI 50 1VNV H Sel 8 31 1HM EN V 311HM i i 03872 3NI 1 X18 UIN LNO NI 9 0 QN2V WX3 901 y U 134 9 x 16 DE NI 2 V 0 zh 1 6 6 A RR CANES 2 H 2H IH INO 2 Y E ch Y ge lid ud 114 MES S EIS 295 ER mE 13 19 119 119 Ga 3 0 20 10 DEE PNE SAAS HI Dn GA Hos 59 je amp O O IE 017 1 00 01 SE m 92 e O O C 27 85 20 60 i dea 5 20157740 FO 0 180 81 N33 IL DTF 1960 amp 1980 Series Service Manual TROUBLESHOOTING GUIDE 1961 120 208 VAC 60 HZ 3 PHASE 1962 120 240 VAC 60 HZ 3 PHAS
7. is no voltage at the Main heater relay trace wiring back to the oven control If there is no voltage output at the oven control check the read out on the control If the control reads PROBE FAIL this indicates that the thermocouple has failed or become disconnected from the oven control Thermocouple Check to be sure that the thermocouple is securely connected to the oven control If the thermocouple is connected to the oven control and the control indicates PROBE FAIL disconnect the thermocouple from the oven control and measure the resistance of the thermocouple The thermocouple should read approx 110 If these readings are not achieved replace the thermocouple If these readings are correct proceed Oven control If the thermocouple checks good but the oven control display indicates that there is a thermocouple failure replace the oven control If the oven control indicates a temperature reading but the oven will not heat proceed Thermocouple WITH POWER ON AND THERMOCOUPLE ATTACHED TO THE OVEN CONTROL Measure the DC millivolt output of the thermocouple Refer to the thermocouple chart located in the Removal section of the manual for proper millivolt readings If these readings are not achieved replace thermocouple Oven control If the thermocouple checks good but there is no voltage output to the Main heater relay replace the oven control If there is voltage output to the Main heater relay proceed Main heat
8. o eem DTF 1960 amp 1980 Series Service Manual REAR VIEW MODEL 1960 SERIES 25 DTF 1960 amp 1980 Series Service Manual I R ELEMENTS VIEW MODEL 1960 SERIES S N 8001209 AND ABOVE 1964 000 E S N 8001208 AND BELOW mi Model Description Part Number 1961 3 0602 1962 3 0616 26 DTF 1960 amp 1980 Series Service Manual MAIN FAN ELEMENTS VIEW MODEL 1960 SERIES S N 8001209 AND ABOVE C TL Ey qux S N 8001208 AND BELOW Or B Model Description Part Number A 120 VAC 1961 370630 A 240 VAC 1962 370461 B 120 VAC Circular 1961 370629 B 240 VAC Circular 1962 370617 DTF 1960 8 1980 Series Service Manual 27 28 CONVEYOR MODEL 1960 SERIES A 370610 X jShadtider B 2370509 Drive Sprocket o _ C 25869516 Bearing Conveyor O_O D 870611 Shaft Drive gt 3 F 21000050 FrameConvyr 3 4A a 36912 Connecting Link Conveyor three required _ 369920 StudRetaier Tinnerman J 370622 Roller Conveyor Belt 5 kk 637000 Bracket Conveyor Bearing L 369922 Support Rod Bottom gt I G Tl MAC CONVEYOR VIEW MODEL 1960 SERIES DTF 1960 amp 1980 Se
9. switch enables the 30 minute cool down timer The 30 minute cool down timer supplies line voltage to the coil of the main fan relay its contacts now close supplying 208 240VAC to the main fan motor Voltage is also supplied to the primary of the control transformer the conveyor motor the oven control Closing the main power switch supplies 208 240VAC to the primary of the control transformer Secondary voltage 24VAC is supplied to the oven control The oven control is set to desired temperature The thermocouple will provide varying millivolts to the oven control The oven control supplies voltage to the coil of the heater relays at intermittent intervals to maintain the desired temperature The display on the oven control will indicate when the main heater relay is energized NOTE The display also indicates oven temperature Adjusting the oven control will allow up to four infrared elements to be operated The control will energize the required relays supplying 208 240VAC to the infrared heaters Closing the main power switch supplies 208 240VAC to the conveyor motor and to the primary of the control transformer Secondary voltage 24VAC is supplied to the oven control Setting the oven control to the desired time outputs voltage through a reversing switch and capacitor to the conveyor motor When the machine is started the time delay relay timing circuit is enabled permitting the main fan to operate for approximately 30 minutes after the
10. the numbered button are 5 labeled lights the two on the far right indicate the state of the IRs The light above the Top IR should be off Last press button 4 to set the lower IRs The light on the bottom will turn on and lights above the label Bottom will show the status of the lower IRs The display will show a number between 0 and 7 Use the arrow button to adjust this value to O The lights above the label Bottom will change to indicate which IRs are on and which are off After properly DTF 1960 amp 1980 Series Service Manual 15 setting oven for calibration do not press any buttons and the control will return to heat up mode automatically after about 10 seconds Allow oven to heat up Light on button number 3 should flash until oven is up to temp set point then light will become solid and oven will begin to cycle Check the temperature being recorded in the oven cavity This temperature should be within 5 F of 650 If temp is below 645 F or above 655 F then the probe offset must be adjusted The equation to be used for adjusting the offset is as follows Change in Probe Offset Cavity Temp Display Temp Examples of adjusting the offset If the Cavity Temp is 550 F and the Probe offset is O with the display temp set at 575 F then the Probe Offset should be set around 25 minus 25 to make the cavity temp equal to the Display Temp If the Cavity Temp is at 565 F with the Display Temp set at 575 F th
11. to see existing toasting temperature Use the UP or DOWN BUTTONS to change to desired temperature b Press the TIME BUTTON 3 to see existing toasting time Use the UP or DOWN BUTTONS to change to desired toasting time 4 The unit will return to normal operations 10 seconds after the last button is pushed and saves the latest program settings 5 Preheat toaster for 30 minutes COOL DOWN CYCLE 1 Push the On Off O switch to the OFF position The unit s main fan will run for approximately 30 minutes after shutting off in a cool down mode PROGRAM MODE T To enter the PROGRAM MODE press and hold the UP BUTTON for 5 seconds Each button has a light that indicates when it can be used When no buttons are pressed for 10 seconds the unit will exit the program and retain last entry 2 Use the UP and DOWN BUTTONS to view or change a TEMPERATURE SETPOINT TEMPERATURE BUTTON 1 b ON OFF 2 BUTTON c TIME VALUE 3 BUTTON d BOTTOM I Rs ON OFF STATUS 4 BUTTON The TOP I R Icon follows the 8 available selections The BOTTOM I R Icon follows the 8 available selections C 2 1 2 IR H i Program Mode p p3 0 o top IR Heater is on Top 1 Top 2 Top 3 Heater 1 only Bottom No Bottom IR is on Bottom Heaters 1 amp 2 IR e O 2 Heater 2 only Top 1 E 1 Heater 1 only 5 Heaters 1 amp 3 O O e 3 Heater 3 only Top 1 Top 2 3
12. use a digital multimeter The element resistance should be as follows 208V 45 ohms approx 240V 58 ohms approx Replace heating elements as needed Oven heats with switch off Main heater relay or The Main heater relay or Infrared heater relay has Infrared heater relay probably failed in the closed position If there is no voltage to the operating coil but there is high voltage at the relay output replace the heater relay Intermittent heating Thermal overload of motor The main fan motor is equipped with internal thermal protection and will cease to operate if overheating occurs As the motor overheats and then cools this will cause the oven to cycle on and off intermittently Improper ventilation or lack of preventive maintenance may cause this Also most of the problems listed under Oven will not heat can cause intermittent failure Conveyor will not run NOTE Display will indicate Belt Jam Power supply Check circuit breakers reset if required Check power plug to be sure it is firmly in receptacle Measure incoming power call power co if needed po Fuse 10 Amp Check replace if necessary Fuseholder Check replace if necessary Hi limit thermostat oven cavity Terminals are normally closed If open reset thermostat and retest If thermostat will not hold for maximum oven temperature and oven is not exceeding temperature setting check for proper location of capillary bulb in its spring holder If the capi
13. 3 for 3 seconds Or if no button is pressed for 30 seconds the unit will automatically EXIT the SUBSET MENU SUBSET LIMITS DEFAULTS PARAMETER VALUE LIMITS FACTORY DEFAULT DEFAULT SET POINT F 32910 700 Fi 575 Preheat Mode C 0 to 370 C 300 Main Heater F 200 to 200 F 60 PROBE OFFSET C 129 to 94 C 33 MAXIMUM SET POINT C 0 to 370 C 340 MINIMUM SET POINT C 0 to 370 C 100 Conveyor Speed oee instructions below NOTE CALIBRATION instructions The calibration must be done at 33 seconds of cook time A positive value in this parameter accelerates the conveyor and a negative value decelerates the conveyor 14 DTF 1960 amp 1980 Series Service Manual SYSTEM DIAGNOSTICS SAFE MODE Occurs when the unit detects a defective temperature probe Display will scroll SAFE MODE CALL SERVICE Main Heater is off Selected COOK program light is on Top and Bottom I R heaters are on Error light is on ALARM sounds Can be turned off by pressing the DOWN ARROW BUTTON COOK PROGRAM and SUBSET MENU modes are not accessible Unit can be restarted after a30 minute COOLDOWN CYCLE 7ooocp ze SHUTDOWN MODE Occurs when the unit detects a conveyor error a Display will scroll SHUTDOWN CALL SERVICE b Main Heater is off C Top and Bottom I R Heaters are off d ALARM sounds Can be turned off by pressing the UP ARROW BUTTON e Unit can be restarted after 30 minute COOLDOWN CYCLE
14. 60 SERIES B 2370573 Label control panel 1 0 1 o D 370571 Control mainanddisplay E 370383 Capacitor conveyrmotr 1 F 370519 Bracket Motor Z 3 O G 2370600 Jovenreacontobox 0 0 H 370462 Motor conveyor gt 3 1 3061 Top controlbox Z o gt SSS O o 23969460 Spring compression 0 1 P 369410 Couplingsleeve 0 10 0 DTF 1960 amp 1980 Series Service Manual DTF 1960 amp 1980 Series Service Manual CONTROL BOX VIEW MODEL 1960 SERIES 23 24 REAR VIEW MODEL 1960 SERIES B 370608 jCovenHeaingElement D 370604 RA 37042 FueHode 0000 H 370570 Relay Impingement Heating Elements J 370538 jRely IR Elements _ O_O K 3015 Rubber Bumper J L 370569 JRelySoldStte O AJ M 370582 Contactor 3Pole 2 ON 37083 JjPowrCod 3 9 amp o 75 Strain Relef domestic models ony _ P 370552 Reversing Switch Conveyor 1 Q 82806 10 O R 3699 j FusHode A o Z 3992 Capacitar O U 370576 Thermocouple MainFan 0 000000000 000000 m DD 300 Moto ManFan C J
15. 82 1982 000 E 1983 000 E 1984 000 E 1984 S N 8001208 AND BELOW Model Description Part Number 1981 4040283 1982 4040283 DTF 1960 amp 1980 Series Service Manual 37 38 CONVEYOR MODEL 1980 SERIES D 370526 Bushing bearing retainer E 370481 Flanged bearing conveyor F 370529 Conveyorframe a 370650 JjSpocktide o H 29050 Drivesproket _ 1 370479 Conveyobeling 1 J 969952 Connecting links three required xU x K 10000513 Panstop driveend 1 L 100005512 Panstopideend o M 870482 JShadider x A o 370483 JjJShadtdive 00 0 0 IIO nm lt rime CONVEYOR VIEW MODEL 1980 SERIES DIF 1960 8 1980 Series Service Manual This page intentionally left blank DTF 1960 amp 1980 Series Service Manual 39 I Lincoln Lincoln Foodservice Products LLC 1111 North Hadley Road Fort Wayne Indiana 46804 United States of America Telephone 260 459 8200 U S Fax 888 790 8193 Intl Fax 260 436 0735 Service Hotline 800 678 9511 www lincolnfp com 131 STAR SERVICE AND PARTS 40 DTF 1960 amp 1980 Series Service Manual
16. E 1981 120 208 VAC 60 HZ 3 PHASE 1982 120 240 VAC 60 HZ 3 PHASE EVALUATION co if needed controls Hi limit thermostat Terminals are normally closed If open reset Oven cavity thermostat and retest If thermostat will not hold for maximum oven temperature and oven is not exceeding temperature setting check for proper location of capillary bulb in its spring holder If the capillary checks okay replace the hi limit thermostat Switch main power Check continuity between switch terminals Replace switch as needed 30 minute time delay relay Check for supply voltage to 30 minute time delay relay at terminals 1 and 6 If no voltage is present trace wiring back to main power switch If there is supply voltage at terminals 1 and 6 check for output voltage at terminals 2 and 3 If there is incoming voltage but no output voltage and the main power switch is on replace the 30 minute time delay relay Relay main fan Check for supply voltage to relay contacts if no voltage is present trace wiring back to power supply Check for supply voltage to the coil of the main fan relay If no voltage is present trace wiring back to the 30 minute time delay relay If voltage is present check to insure contacts are closing Replace as needed Main fan motor Check for supply voltage at motor If no voltage is present trace wiring back to circuit breakers WITH POWER OFF Check for opens shorts or grounds Turn fan blad
17. REPLACEMENT UP quet Shut off power at main breaker Remove rear cover open rear access panels Remove wires from appropriate fuse holder and mark wires for reassembly Remove mounting screws from fuse holder and remove fuse holder Reassemble in reverse order and check system operation RELAY MAIN HEATER RELAY INFRARED HEATER REPLACEMENT m Ne Shut off power at main breaker Remove rear cover open rear access panels Hemove wires from appropriate relay and mark wires for reassembly Hemove mounting screws from relay and remove relay Reassemble in reverse order and check system operation REVERSING SWITCH CONVEYOR REPLACEMENT I Pr Shut off power at main breaker Remove rear cover open rear access panels Hemove wires from reversing switch and mark wires for reassembly Hemove mounting nut from reversing switch and remove reversing switch Reassemble in reverse order and check system operation TRANSFORMER CONTROL REPLACEMENT N Shut off power at main breaker Remove rear cover open rear access panels Remove wires from control transformer and mark wires for reassembly Hemove mounting screws and remove control transformer Reassemble in reverse order and check system operation CAPACITOR CONVEYOR MOTOR REPLACEMENT Shut off power at main breaker Hemove control box top and rear control box cover Discharge capacitor remove wiring from capacitor and remove one mounting screw Hemove capa
18. SERVICE MANUAL DOMESTIC amp INTERNATIONAL DUAL TECHNOLOGY FINISHER MODEL 1960 amp 1980 SERIES gt Lincoln Lincoln Foodservice Products LLC 1111 North Hadley Road Fort Wayne Indiana 46804 United States of America Telephone 260 459 8200 U S Fax 888 790 8193 Intl Fax 260 436 0735 Service Hotline 800 678 951 1 www lincolnfp com Av U STAR CERTIFIED SERVICE AND PARTS DTF1960and80serv REV 1 16 07 SEQUENCE OF OPERATION DUAL TECHNOLOGY FINISHER 1961 1962 1981 1982 120 208VAC 60 HZ 3 PHASE 120 240VAC 60 HZ 3 PHASE 120 208VAC 60 HZ 3 PHASE 120 240VAC 60 HZ 3 PHASE NOTE DTF must be placed on an oven stand for approved operation No other surface may be used for operation POWER SUPPLY MAIN FAN CIRCUIT TEMPERATURE CONTROL INFRARED HEAT CONVEYOR DRIVE AUTOMATIC COOL DOWN Electrical power to be supplied to the oven by a five conductor service for three phase Black conductor is hot Red conductor is hot Orange conductor is hot White conductor is neutral Green conductor is ground Power is permanently supplied to the normally open main heater relays the upper and lower IR relays the oven control and through the 10 A motor and control fuses to the normally open main fan relay Power is also supplied through a normally closed hi limit thermostat to terminal number 1 of the 30 minute cool down timer and to the main power switch Closing the main power
19. citor Reassemble in reverse order and check system operation DTF 1960 amp 1980 Series Service Manual CONVEYOR MOTOR REPLACEMENT POI DM Shut off power at main breaker Remove coupling from conveyor shaft one screw at end of motor shaft Hemove control box top and rear control box cover Disconnect wiring for motor and remove motor mounting screws Remove conveyor motor and mounting bracket Hemove conveyor motor from mounting bracket Reassemble in reverse order and check system operation THERMOCOUPLE REPLACEMENT lt A Shut off power at main breaker Remove control box top Remove rear cover open rear access panels Remove right side heating element cover Remove mounting screws and remove thermocouple from oven cavity Disconnect thermocouple from main control remove thermocouple Reassemble in reverse order and check system operation THERMOCOUPLE MEASUREMENT TEMPERATURE F D C MILLIVOLTS 200 2 8 250 4 0 300 5 1 350 6 0 400 7 1 450 8 2 500 9 3 550 10 4 600 11 5 THERMOSTAT HI LIMIT REPLACEMENT me Shut off power at main breaker Remove rear cover open rear access panels remove right side heating element cover Remove hi limit thermostat mounting plate Remove hi limit thermostat Reassemble in reverse order and check system operation Be sure to reset thermostat before testing HEATING ELEMENT MAIN REPLACEMENT lt UE Shut off power at mai
20. e to check for locked rotor Ko Check for shorts or grounds WARNING Capacitor has a stored charge discharge testing NENNEN will not heat Main fan motor Check for main fan operation If it is not operating refer to Oven fan will not run Control transformer Check for 208 240VAC supply to the primary of the control transformer If no voltage is present trace wiring back to the main power switch If voltage is present check for 24VAC at the transformer secondary If there is primary voltage but no secondary voltage replace the control transformer Oven control Check for 24VAC supply to control If no voltage is present trace wiring back to control transformer If 24VAC is present check for a read out on the display If there is 24VAC supplied but there is no read out on the control display replace the oven control If there is a read out on the control set the control to maximum temperature see installation operations manual for temperature adjustment With the control set at maximum temperature check for supply voltage DTF 1960 amp 1980 Series Service Manual 5 No Infrared Heating to the oven control at terminals J3 12 and J3 3 If there is no voltage present trace wiring back to the air pressure switch If there is voltage present check for output voltage at the Main heater relay R1 If there is voltage at the Main heater relay proceed to Main heater relay for next check If there
21. en the Probe Offset must change by 10 degrees For example if the Probe Offset was at 40 and the change in the Probe Offset is calculated to be 15 then the Probe Offset must be 55 To access the Probe Offset option press the hold button 3 for about 30 seconds The display will scroll Temperature Units when the control enters the correct menu Use the up down arrow button to scroll through the options until Probe Offset scrolls across the display At this point press and release button 3 and the display will show the current set point of the Probe Offset Default setting is 60 Use the up down arrows to adjust the offset based on the calculated Change in Probe Offset from above Once the Probe Offset is changed to the desired value press and hold button 3 for 3 seconds to exit the menu Oven will now return to the heat mode and the light next to button 3 should flash until oven reaches set temperature of 600 F Check the cavity temperature again after oven temperature has stabilized to ensure that the Probe Offset is now correct Once the cavity temp and display temp match within 5 F the calibration is complete Press Program 1 key IRs will turn on and the settings are preset Maximum temperature setting is 650 F Cavity temperature should reach 710 F to 760 F Calibration is complete NOTE Cavity temperature should not exceed 825 F If Hi Limit trips replace Hi Limit MAIN CONTROL REPLACEMENT DT
22. er relay Check for supply voltage to the relay coil If voltage is present and the relay will not activate replace the Main heater relay Also check each relay contact for high voltage input and output Heating element s Check the Amp draw on each power leg for proper load Check the specification plate for rating information If the amp draw is high or low check the individual elements for opens shorts and proper resistance WITH POWER OFF To check resistance of the elements remove all leads from the elements and use a digital multimeter The element resistance should be as follows Circular element 120V 7 5 ohms approx oide elements 120V 14 ohms approx Replace heating elements as needed Main fan motor Check for main fan operation If it is not operating refer to Oven fan will not run Infrared heater relay Check for supply voltage to the relay coil If no voltage is present trace wiring back to Infrared heater switch If voltage is present and the relay will not activate replace the Infrared heater relay Also check each relay contact for high voltage input and output Infrared Heating element s DTF 1960 amp 1980 Series Service Manual load Check the specification plate for rating information If the amp draw is high or low check the individual elements for opens shorts and proper resistance WITH POWER OFF To check resistance of the elements remove all leads from the elements and
23. llary checks okay replace the hi limit thermostat owitch Main Power WITH POWER OFF Check continuity between switch terminals Replace switch as needed Control transformer Check for supply voltage to the primary of the control transformer If no voltage is present trace wiring back to the oven power relay If voltage is present check for 24 VAC at the transformer secondary If there is primary voltage but no secondary voltage replace control transformer Conveyor motor Check for supply voltage to the conveyor motor If no voltage is present trace wiring back to the primary of the control transformer If voltage is present and the motor will not run check the motor windings for opens or shorts WITH POWER OFF Check the motor windings as follows Grey to black 286 ohms approx Grey to brown 236 ohms approx Brown to black 472 ohms approx If any of the above fails replace conveyor motor Capacitor conveyor motor Check for shorts or grounds Replace capacitor as needed WARNING Capacitor has a stored charge discharge before testing dica conveyor reversing Check continuity between switch terminals Replace mu as needed 1960 amp 1980 Series Service Manual 7 Conveyor motor runs but there Oven control is no speed display Conveyor motor If there is supply voltage to the motor and the motor motor capacitor and reversing switch check good replace the o
24. machine is shut off to cool the machine The 30 minute time delay relay will keep the coil of the main fan relay energized maintaining operation of the main fan motor for 30 minutes DTF 1960 amp 1980 Series Service Manual SCHEMATIC DIAGRAM DOMESTIC MODELS M3IA YV3Y NOLIVENDIINOD IS NIVH HOLIMS 15 pem 3MOd NIVA AV13U GU 10002 EVINDYIO u3lV3H EH IH 21 LSINOG TONES NYJ NIVW AVIJH QU dOnt ISIS TOULNOD U3AUOJSNYUI 14X 193130 31415 01105 HOLIMS 8SS AV13U 18 NO1109 EN 3903 9 6 4 64 i ON A 310NIN 0 AV130 INIL GI HOAJANOJ YOLOW ZW 51081103 Y YOLOW ISNA 23 143 X 3dAL 11400208943 1 21 NIVA HOLOM IW YOLON 4O43ANOO 1OU1NOO QWOV AX3 LIWII HOTH NJAO 1VISONS3HL 11 JIVLS 0110 17104 Z AVIJU 18 NJAO 1081103 IN23 YILVIH NIVW YSS EIS 198 10051 13801 Q3UVUJNI U31V3H 11H 6H YOLOW HOAJANOJ YOLIOVAVO 22 9NISU3A3U YOATANOD HOLIMS 25 MOOSI u3ddf O3UVUJNI YILVIH 8H 9H NVI NIVA YOLTOVdVD 12 8 311HM 2111 JIH E INI I 418 SIN 134 90 1 Hl Sa 038 8 018 2652 2066 INO NI 3 0 QN2V WX 3 66 gt 56 Zj E COS 235 195 r eh NI 2 V i i 06 006713 er aX d G1 OL 2 JYIM LOINNOD ADF 04 01 OL EZ JHIM LOINNO A802 8 Bi 01 O O 119 119 119 60 ro 0 20 10 Ka Rpeo1 AE I 16 1 7219 KE BORN 86 96 126 20211 1150 201 66 05 10 70 DTF 1960
25. n breaker Remove conveyor finger assemblies and plenum front Remove rear cover open rear access panels and remove appropriate heating element cover Remove wires from heating element and mark wiring for reassembly Remove mounting screws and remove heating element Reassemble in reverse order and check system operation DTF 1960 amp 1980 Series Service Manual 11 HEATING ELEMENT INFRARED REPLACEMENT 1 Shut off power at main breaker 2 Remove conveyor and lower finger assemblies Remove front conveyor support from oven cavity 3 Hemove front cover and heating element cover Disconnect wiring from heating element and mark wires for reassembly 4 Reassemble in reverse order and check system operation MAIN CONTROL SETTINGS C2 Error C2 O Main e o Heater Bottom SDC AG ma Bodo eu Em Lincoln START UP 1 Push the On Off O switch to the ON position The display will indicate SELECT PROGRAM 2 Press the 1 PROGRAM BUTTON The toasting program will indicate SANDWICH The 1 program button will blink Buttons 2 3 and 4 can be used for other menu item programs 3 Programming the unit to desired settings To enter the program mode press and hold the UP BUTTON for 5 seconds The UP and DOWN BUTTONS will light indicating the control is in a change status 12 DTF 1960 amp 1980 Series Service Manual a Press the TEMPERATURE BUTTON 1
26. otor mount assembly from back of oven Measure proper location of cooling fan on motor shaft for reassembly Remove cooling fan Remove motor from motor mount Reassemble in reverse order and test for proper operation CAPACITOR MAIN FAN MOTOR REPLACEMENT poi Shut off power at main breaker Remove rear cover open rear access panels Discharge capacitor disconnect wiring and remove capacitor Reassemble in reverse order and check system operation MAIN FAN REPLACEMENT See MOTOR MAIN FAN above SWITCH ON OFF REPLACEMENT Dr Shut off power at main breaker Remove control box top Depress clips on sides of switch and remove switch from front panel Disconnect all wires from switch Mark all wires for reinstallation Reassemble in reverse order and check system operation RELAY TIME DELAY REPLACEMENT DT Shut off power at main breaker Remove rear cover open rear access panels Hemove wires from time delay relay and mark wires for reinstallation Hemove mounting screw and remove time delay relay Reassemble in reverse order and check system operation DTF 1960 amp 1980 Series Service Manual RELAY MAIN FAN REPLACEMENT me Net Shut power at main breaker Remove rear cover open rear access panels Hemove wires from main fan relay and mark wires for reassembly Hemove mounting screws and remove main fan relay Reassemble in reverse order and check system operation FUSE HOLDER
27. ries Service Manual This page intentionally left blank DTF 1960 amp 1980 Series Service Manual 29 30 GENERAL MODEL 1980 SERIES E 2700844 ColumaingPanl 297073 FingerCover a 370450 Tum Fastener o H 9005450 X Air Wash Assembly 1 900550 __ Assembly 1 1 J 370708 FingerCover o K 700844 ColumnatingPanel 1 O L 27008882 Finger Housing Top Right N 37097 Drive Shaft Cover 0 O 397098 Top Cover J P 2700884 1 Finger Housing Top Let ra 2700844 ColumnatingPanel o S 300 FingerCover 333w33 T 2900550 X AirWashAssembly U 900550 _ Assembly 1 lt V 370708 X FingerCover gt M ww 700844 ColumnatngPanel 1 0 X 70088482 Finger Housing Bottom Left Y 369373 Receptacle Snap In IIO mim e Z DTF 1960 amp 1980 Series Service Manual GENERAL VIEW MODEL 1980 SERIES ee SS TATED x MSN JI INS DTF 1960 amp 1980 Series Service Manual 32 CONTROL BOX MODEL 1980 SERIES A 36932 Switch on off Z4 4Z4 B 370573 JjLabelconropael 1 0 o Z OD 397057 Control mainanddispay
28. t around the idler shaft and back on the conveyor The belt must lay on top of the upper conveyor slider bed NOTE The belt should curl around the conveyor sprockets and lay flat on top of the sprockets If the belting does not curl around the sprockets and lay flat remove the belting and turn over Reinstall 3 Pull all of the slack belt through the conveyor until both ends are on top of the conveyor on the left end 4 Reconnect the conveyor belt by slipping the connecting links back in place NOTE The conveyor belt of the Impinger DTF does not have a tension adjustment If the belt would become too loose a link s will have to be removed to tighten A belt that is too tight will also cause operational problems due to excessive drag We suggest that you have a qualified service person perform this adjustment DTF 1960 amp 1980 Series Service Manual 17 Careful consideration should be exercised prior to WARNING removing a belt link because a belt that is too tight will impede the smooth operation of the conveyor Do not work around conveyor belt with long hair loose CAUTION clothing or dangling jewelry Getting caught in the belt could result in dismemberment or fatal injury CAUTION BELT MAY BE HOT CONVEYOR ASSEMBLY 18 DTF 1960 amp 1980 Series Service Manual This page intentionally left blank DTF 1960 amp 1980 Series Service Manual 19 20 GENERAL VIEW MODEL 1960 SERIES A 370585
29. ven control Check for output voltage from oven control to hall effect sensor sensor is located in conveyor motor Measure voltage at the motor connector red wire and yellow wire Voltage should be approx 10VDC If no voltage is present trace wiring back to oven control If there is no voltage present at the oven control replace the oven control If there is voltage supplied to the hall effect sensor check for a frequency output from the hall effect sensor Measure frequency across the yellow and white wires at the motor connector Frequency reading should be approx 25 100 Hz If these readings are not achieved replace conveyor motor If the readings are achieved proceed If the hall effect sensor readings are correct but there is no speed indicated on the display replace the oven control DTF 1960 amp 1980 Series Service Manual REMOVAL INSTALLATION AND ADJUSTMENT DUAL TECHNOLOGY FINISHER CAUTION BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE DUAL TECHNOLOGY FINISHER BE SURE TO DISCONNECT THE ELECTRICAL POWER SUPPLY MOTOR MAIN FAN REPLACEMENT lt di 6 Shut off power at main breaker Remove conveyor and finger assemblies from oven see installation operations manual Remove front plenum assembly Measure location of main fan on motor shaft for reassembly Loosen two set screws and remove main fan from motor shaft Remove rear cover Disconnect wiring from motor Remove motor and m
Download Pdf Manuals
Related Search