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Nikon 27697 Digital Camera User Manual

1. V 369316 Temperature Dial _ Z Z o gt S W 3692683 Gas Valve Nat LP Only X 296984 Pilot Shut Off Valve Y 369086 Piloting 2 369398 Solenoid Valve Nat 369099 Burner Orifice LP Gas DD 369075 FlmeSensr gt o 369100 Pilot Orifice LP Gas MH 369007 Temperature Sensing Switch OO 3698 8 CoolngFanContoBox PP 369531 Transformer 120 24 40 VA ca 369270 Temperature Control 0 IIO mlm i N lt x S lt Cc 9 cO 8 Impinger 1000 Series Service Manual International BLOW UP 1242 1243 99 Impinger I 1000 Series Service Manual International PARTS OVEN BACK GAS LETTER P N DESCRIPTION A Motor S N begins with a Q C Fan S N begins with See Page 08 K L Oven Fan Motor S N 4612 amp Below 3947 Wire Form Thermostat Bulb 1040 Series x Replaces N L A Fan Assy with New Style Oven Back Assy x Replaces N L A Fan Assy with New Style Oven back Assy 100 Impinger 1000 Series Service Manual International BLOW UP OVEN BACK GAS Impinger 1000 Series Service Manual International 101 PARTS OVEN BACK ELECTRIC LETTER P N DESCRIPTION Motor S N begins with a Q L Be 1 D 369315
2. HS HE ME H H GE HL es em eno on o 001 pr Ba Impinger 1000 Series Service Manual International 14 SCHEMATIC 1028 1029 S N Q19078 amp ABOVE BC 3AOS8V 820610 N S 6201 8201 S I3dON 32078 WNIWYSL 1109141519 SYJAWON 3u M 7031403 HOA3ANO2 H3WH035NYHl u3M0d M3HB0 3SNYtL 19 2YAS ZI 1 1 MINYOISNYYL AVTdSIQ dW3L IKIL A T8H3ISSV 109 3unlYH3dW11 f 3TdNOJOWYIKL 9811002 08 7081802 19150 WONITd LIWIT IM 19150 1V1SORH3HL 831 3 HOLIMS Lp ape REREB BOA 3ANOD HOLIMS N3A0 HILIMS d SH012Y LNOO 30104 NJAO AY 133 80565384475 3SICN YOA3ANOD uOLCW 9411003 4OLCW NJAO 80104 L3NOVA 801 210 1 LY3H dWY 805835 123343 o 139 8 o3 3 4 03 9g Pare M 0057 u31Y3H 4371041402 3unlYuidW3l 73513 VE HOAJANOS 3503 ISNA VOL YOLOW ISNA HILVIH 3503 E4 1 1041802 3dflYH3dW31 21 0812313 AT WNISSY 104 0 02 Yd2 1031403 0 02 572 YOLIDVdYI I HOLIMS 34055359 HIV SdY BE kkkh BB rh 15 Impinger 1000 Series Service Manual International SCHEMATIC 1030 TO S N Q17170 0501 T3A0N 91 OVA 024 10HLNOO H
3. H3AHO3SNVUL OWA SZL 1 1 YINHOSSNVEL AWVIdSIG dNILANIL AT NSSSV 1Od FJUNLVYIdNAL HOLSINHIHL 3dAL 31d109ONWH3H L 13S JWL HOLIMS LV3H HOLIMS HOA3ANOO HOLIMS HOLIMS v 4 BEER HOLON NJAO H3GOON3 12240 SOLOW gt HOLON N3AO HOLON HOIH L VISOWH3HL gt HOLVOIONI LV3H dAVT gt 143 313 vos 3snd vos 3snd vos 3604 VE IOHTNOO 94 VE HOA3ANOO ISNA Vr H3AHOJSNYHL ISNA vt 35N3 YOL 3Snd TOULNOD JUNLVUIdNAL 0313 HOLOVINOO A18W3SSY 1Od HOA3ANOO JOHLNOD HOA23ANOO VL 0 d33v3H8 SZ HOLIOYdVO NJAO LVYLSONUIHL HOLMS 34055204 VY Sd Impinger 1000 Series Service Manual International 18 SCHEMATIC 1032 S N Q19078 amp ABOVE 220610 SH38W nN 791835 32018 SSN HISNY 9N0113143 5601 TSQOW YOXZIIH H3llVHOS EG MOOS HOXZI3H ONYSLYOdSNYHL YSLTVHIS ZS VE 1VISOWH3HL 9 083 2 5 44 JILVNIHOS oNnidIuHOS38138v3 0 WOlVTLINGA N340 HBL TYHIS 15 VE ONVBlMOdSNYHI 9NnH3HDIS 94 ONYGIHOdSNYHI HOiVWUOJGNYUL EXX 803713 SIVl3H 28 VE YOLVWHOJSNYHL 9 083 215 94 YOLVNYOISNYYHL ZYX 831301 330 SIY13 14 VOL HOLYTII
4. COND O1 Shut off power at main breaker Remove control panel top and front panel NOTE Complete burner blower motor assembly with control box p n 369359 is no longer available The burner blower assembly p n 369265 has been changed to a burner motor kit p n 369366 When It is used in the 3 ft Impinger Gas oven the following modification must be made Remove control box and components mounted on burner blower motor Mount transformer on air switch bracket as shown use transformer as template Remove three 3 screws that attach blower assembly to burner housing Mount new blower assembly Wire as shown See page 56 Discard control box and relay Transfer air shutter assembly from old blower assembly to new blower assembly MATERIAL NEEDED 29 drill bit and 8 x 3 8 self tapping screws 3 each AIR SWITCH MOUNTING BRACKET O MOUNTING HOLES USE 29 DRILL 8 X 3 8 SELF TAPPING SCREW SEPARATE GROUND SCREW Impinger 1000 Series Service Manual International 55 CENTRIFUGAL MOTOR SWITCH WIRING DIAGRAM BURNER BLOWER ASSEMBLY WITH RELAY REMOVED 24 VACTO IGNITION CONTROL TO GROUND TERMINAL ON IGNITION CONTROL TRANSFORMER P N 369531 WHEN USING OLD TRANSFORMER 120 VAC LEADS ARE BLACK WIRE TERMINALS ARE PROVIDED BLACK BUTTSPLICE CONNECTORS PROVIDED FOR 120 VAC POWER SUPPLY BLOWER WHEEL BURNER SJ oc This is part of the burner blower motor assembly
5. 1000 Series Service Manual International TACH GENERATOR Qo S Ole be Shut off power at main breaker Remove conveyor motor assembly Remove tach cover plate and tach leads Mark lead position Remove 2 slotted screws from dust cover base and remove dust cover Loosen coupling set screw 050 inch allen wrench Remove tach bracket from motor Remove 4 screws from base of tach and tach is now free for removal Reassemble in reverse order Maintain spacing of 010 minimum between tach Bracket and coupler hub NOTE If anew tach generator is installed the D C motor control board MUST BE RECALIBRATED There is no repair procedure for the tach If defective replace CONVEYOR MOTOR CONTROL BOARD 6 7 Shut off power at main breaker Remove control panel top and front cover Remove cover from relay box SN 100 4389 BODINE SYSTEM Remove wires from terminal strip on control board making sure to mark wires so they will be reinserted on the proper terminal Remove the four 4 hex head screws Reassemble in reverse order and calibrate See D C Motor Control Board Calibration Bodine System SN 4390 14974 1000 SERIES GAS OVENS SN 4390 14791 1200 SERIES GAS OVENS Make note of wire number and location before removing them from the control board POLARITY BETWEEN T1 T2 AND A AND A IS CRITICAL The bottom mounting screw need only be loosened as the mounting bracket for the control board is slotted R
6. 220V Heating Element Fan S N begins with a Q SeeDealPageiB 369028 Motor Mount Support Assy S N 04767 8 Below 36954 Wire Form Thermostat Bulb Electric Ovens x Replaces Fan Assy with New Style Oven Back Assy pf Replaces Fan Assy with New Style Oven Back Assy x Replaces Fan Assy with New Style Oven Back Assy x Replaces Fan Assy with New Style Oven Back Assy 102 Impinger I 1000 Series Service Manual International BLOW UP OVEN BACK ELECTRIC j 7771 VI Impinger 1000 Series Service Manual International 103 PARTS CONVEYOR MOTOR ASSEMBLY S N 4390 amp ABOVE LETTER P N DESCRIPTION 3934 Motor Brush Assy 369294 gt gt o 369290 X Optical Encoder Assy O Z o Z o 369151 Coupling and Encoder Disc 050 in Allen Wrench included F 369146 HexNut 440 9 0 369294 4Lockwasher H 369292 Bracket Tach Generator 1l 369297 Soew6 32x14 J3 369156 6Lockwasher 0 K 369293 Scew440x38 0 AJ L 369150 Tach Generator o M 1 369298 DustCover 0 0 0 0 0 0 369299 Busing 0 350247 Jj Scew1032x3 8 1 L3 P 369295 Jfi locwashe 0000 Q 2 369603 Stepper
7. LETTER P N DESCRIPTION B 394 Kmb x p 396018 Fuse Amp 369014 fue S 369368 T 360881 FmgrGurd v 369054 Spark Generar w 9695 5 Ignition Control 360771 PusButonSWih X 369050 Valve Muti Boc TT Y 369057 Comecon4Poe x Z 9690570 Connector Pole oO DD 369172 TimerTemp Display 869099 Main Burner Orifice LP Gas 360100 LP Gas TT 369589 BumerBowerMoor pP 969 06 Magnet 3969 3 SensrHalEfed RR 369676 Diferential Air Pressure Swich _ ue gt lt NI lt cO 4 Impinger 1000 Series Service Manual International BLOW UP 1033 1034 1046 1047 Impinger I 1000 Series Service Manual International 95 PARTS 1228 1229 LETTER P N DESCRIPTION B 37107 FuseHolder 0 2 21123904 Fuse10Amp 02 36935 FuseMDLTimeDelaytAmp D 9 369248 1 3928 Neon Pilot Light 125VAC J 369025 Blower Air Switch K 36930 Contactor 50A 120V EL 34258 Transformer 280V 118V M 8369127 HiLimitThermostat N 369118 60AFuseholder 0 1 369007 Temperature Sensing Switch 369902 Sensing Rod Kit Q 13919 JgJPeOAFushode 0 2 R 6286934 370046 JButonOny 369172 Digital Display 02 V 969
8. TH 9 117002 X08 WOYLNOD 1V1SOWH3HL 011 70938 3univu3dW3l JAWA TA OIDYG 1NOU D LINDWW JOULNOD HINYNG 28 AW1dS10 3 HOLVIIONI duwi HOLIMS 38 55384 HIV 54 E 9 v E Br 59 80 7 EEN Ax lt 25 Vi n 9 r 22 p D f qp 860 ep ig N un or SU Ecl SENG da Gi MIT 195 T AS X 1 72 not 2 O mmm H RA OX t 4m ed 5 SITA MO T38 ONY 2602 S x 9 8 TEX 3409 ala Xl dl MI 0 ce uw EAS i of lt l 23 1NOU3 i p E Ej 25 ug T 32018 a ek WUIL 25 Impinger 1000 Series Service Manual International TROUBLESHOOTING GUIDE 1000 amp 1200 GAS OVENS ncoming Power Supply Check breakers Reset if required Call Power Co if needed For some export ovens there is a control circuit step down transformer This transformer steps down supply voltage to 120 VAG If main fan will Oven fan will not run NOTE No Main Fan Cool Down No Control Box Cooling For ovens equipped with Control Box Cooling Fan No automatic control box cooling For ovens equipped with control box cooling fan Transformer 24 VAG 26 Export Ovens not run the secondary of this transformer must be checked for 120 VAG
9. TO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING Shut off power at main breaker Remove control panel top and front cover Remove air shutter held by 3 screws Loosen set screw on blower wheel hub and pull straight out Reassemble in reverse order NOTE There is no critical placement of the blower wheel on the motor shaft Just back as far as it will go and then spin the blower to be sure it is not rubbing AIR PRESSURE SWITCH So ee t 56 Shut off power at main breaker Remove front control compartment cover Remove air switch cover plate Disconnect wiring and mark for reassembly Loosen 2 screws and remove air switch Disconnect 1 4 air tube Reassemble in reverse order Turn on power and calibrate air switch as follows Turn adjusting screw counter clockwise to full out position Turn main fan and heat switch on Turn adjusting screw clockwise until heat shuts off Turn adjusting screw counterclockwise 1 4 turn and unit should heat NOTE Test as follows Oven must be tested in heated condition Remove main fan fuse Main fan should shut down deactivating air switch causing heat to shut off in approximately 5 to 25 seconds Impinger 1000 Series Service Manual International BURNER ASSEMBLY Shut off power at main breaker Shut off gas supply Remove control panel top and front panel Remove gas control valve See GAS CONTROL VALVE Disconnect pilot tube Remove thermostat or solenoid va
10. 74 Impinger 1000 Series Service Manual International Dip Switch 2 3 4 5 6 7 8 9 10 TYPE I OFF OFF OFF ON OFF OFF TYPE II OFF OFF OFF OFF OFF OFF TYPE Ill OFF OFF OFF OFF OFF OFF OFF ON OFF ON NOTE When on 50 HZ power dip switch 42 must be ON With power ON turn time and temperature cal pot fully counterclockwise Display should read Wait 15 20 seconds TYPE I 9 30 10 sec 475 10 F TYPE II 9 20 10 sec HHH TYPE III 9 35 10 sec 635 10 F Turn time and temp cal pot fully clockwise Display should read Wait 15 20 seconds TYPE I 10 20 10 sec 615 10 F TYPE 10 10 10 sec 475 10 F TYPE 10 20 10 475 10 F Turn time pot to 10 00 minutes and temp pot to 540 F Time reading 10 00 5 seconds Temperature reading should be steady at 540 F 10 F If these readings are not achieved replace display NOTE After simulator test is completed the oven Time Temperature Display must be re calibrated SWITCH REPLACEMENT FAN HEAT CONVEYOR Shut off power at main breaker Remove control panel top and front cover Remove switch access cover Depress the spring clips on the sides of the switch and push out Remove wires from back of switch Note wire number and location Install new switch in reverse order and check ST SWITCH REPLACEMENT FAN SWITCH UPDATE INSTALLATION OF DOUBLE POLE FAN SWITCH 369260 IN PLACE OF SINGLE POLE FAN SWITCH 350705 NOTE
11. Check the leads to the motor for evidence of any shorts or opens and each lead to ground If the motor fails the above tests replace motor Remove dust cover from the top of the motor and rotate motor shaft to determine if there is a locked rotor or a locked gearbox use care so encoder disc Is not damaged Conveyor Check for any mechanical misalignment or improper adjustment Also check for worn bearings The Installation and Operations Manual shows proper conveyor belt adjustment A conveyor belt that is over tightened will cause excessive bearing wear and sometimes irregular speed Conveyor speed Power Supply Check power supply at the DC control board for the varying or intermittent 120 VAC at board terminals L1 and L2 If voltage is not present check main circuit breakers Tach generator and DC Motor Control Board With the power to the DC motor control board turned off remove the leads from terminals T1 and T2 Place the test leads of a digital meter on the tach leads turn power on and the meter reading should be approximately 30 to 35 VDC This reading should be steady within 0 2 to 0 3 VDC If this reading is not within 0 5 VDC place the test meter probes on terminals A and A The meter reading should be approximately 150 to 160 VDC and steady within approximately 2 VDC If the tach voltage is unsteady and the board output is steady check the coupling for loose set screws or any type of damage If the coupling
12. This change is not necessary for proper operation of oven nor is it permissible to change under warranty Should be changed only at customer s request and their agreement to pay your bill ADVANTAGE Allows time temp display in older models to operate same as current production models Also allows locked time temp display caused by voltage surge interruption or spike to be reset by fan switch rather than circuit breaker IDENTIFICATION To determine which fan switch you have observe if temperature displays stays on during cooling down If it stays on you have the single pole switch If it goes out as soon as fan switch is turned off you have the double pole switch REPLACEMENT Replace single pole switch 350705 Install double pole switch 369260 Disconnect lead indicated by in proper diagram and reroute as shown Install jumper lead indicated by in proper diagram Reapply all other leads as removed Impinger 1000 Series Service Manual International 75 THE FOLLOWING ITEMS ARE USED IN THE MODEL 1030 1046 1047 IMPINGER OVEN EXPORT AIR PRESSURE SWITCHES REPLACEMENT AND ADJUSTMENT Che ON Remove control panel top Disconnect wires from switch making note of wire number and location for reinstallation Remove air tube from switch assembly Remove switch from wire hanger Install new switch in reverse order make sure air tube is not blocked miss aligned Adjust as needed To adjust the air pressur
13. it drives both the reducer gearbox and the Tach Generator The Tach Generator is a DC voltage generator which supplies a voltage to the DC motor control board and is used as a reference for maintaining a constant conveyor speed TIME TEMP DISPLAY The Time Temp Display is energized when the Fan Switch is closed supplying 120 VAG to the primary of the 12 6 volt Transformer The secondary output of the transformer normally 13 to 14 VAG depending on input with a center tap is supplied to terminals 1 2 and 3 of the Time Temp Display The center tap is terminal 2 The display works on a balanced input and center tap voltage to each leg must be 1 2 the total reading The speed side of the Time Temp Display uses a slotted disc cemented to tach coupling to break the infra red light beam of the optical switch mounted on gear motor producing electrical pulses that are transmitted to the display The display converts these pulses into a read out of minutes and seconds The temperature portion of the display uses a Thermistor Probe to sense oven temperature The thermistor outputs a resistance proportional to the oven temperature This resistance is then converted by the display into a temperature reading SEQUENCE OF OPERATIONS 1028 1029 1228 1229 MODEL 1028 380Y 220 VAC 50 HZ 3 PHASE MODEL 1029 415Y 240 VAC 50 HZ 3 PHASE MODEL 1228 380Y 220 50 HZ 3 PHASE DUAL BELT MODEL 1229 415Y 240 VAC 50 HZ 3 PHA
14. replace the potentiometer Conveyor Motor Stepper NOTE if the conveyor drive motor becomes Control jammed or begins to run at an uncontrolled speed the conveyor motor will stop running To reset turn off the conveyor switch wait 30 seconds turn the conveyor switch on If the motor does not run after attempting re set check for 2 to 29 VAC across the motor terminals 1 to 2 and 3 to 5 on the conveyor motor control If voltage is not present at both sets of terminals replace control 50 Impinger 1000 Series Service Manual International Conveyor Drive Stepper Motor Time Temp Display inoperative 12 VAC Power Supply Transformer Time Temp Display Temp Display out or inaccurate NOTE Time temp displays use two types of temperature sensor Thermistor Probe 2 yellow wires Thermocouple Probe 1 red amp one white wire Thermistor Probe Thermocouple Probe Power Supply Impinger 1000 Series Service Manual International Check the drive sprocket on motor output shaft to insure that it is tight Check motor windings measurement should be approximately 2 ohms Terminals 1 5 2 6 3 7 4 8 WITH POWER OFF Turn the motor shaft to check for jammed gear box If motor shaft will not turn replace conveyor drive stepper motor Measure the transformer primary for a nominal 120 VAC input if voltage is not present trace wiring back to the oven fan switch Measure the secondary output which wi
15. vu 92 BELOW UP 1042 104 eee 93 TOSS 1034 1046 a a 94 BEOW UP71035 1034 1046 104 serende 95 FART PN 96 BENT Tee 97 PAD Ne 98 BLOWS UPR 2 99 PARTOT OVEN BACK GAS SE MOE RE EE o 100 BLOW UP OVEN BACK GAS spe 101 PARIS OVEN BACK BEEC AIG ven 102 BLOW OVEN BACK ELEC DRC vvs 103 PARTS CONVEYOR MOTOR ASSEMBLY S N 4390 amp 104 BLOW UP CONVEYOR MOTOR ASSEMBLY S N 4390 amp 105 PARIS SERIES 1900 CONVEYOR surr 106 BLOW UP SERIES 1000 CONVEY OR NE 107 PARTS SERIES 1200 CONVEYOR 108 BLOW SERIES 1200 CONVEYOR CONTROL 109 PARIS SERIES 1200 CONVEY OR pe 110 BLOW SERIES 1200 CONVEYOR 111 2 Impinger 1000 Series Service Manual International SEQUENGE OF OPERATIONS 1002 1003 MODEL 1002 240VAC 50HZ NATURAL GAS MODEL 1003 240VAC 50HZ L P GAS POWER SUPPLY Electrical Power to be supplied to the Oven by a three conductor service Black conductor is Hot Red conductor is Neutral Green conductor is Ground CONTROL BOX When the temperature in the Control Box reaches 120 F AUTO COOL DOWN 3 the Cooling Fan Thermostat will switch power to the Control Box Cooling Fan The Thermostat will interrupt power to the Cooling Fa
16. 1 to neutral There should be a voltage reading of 120 VAG If not present check breakers 3 Amp Fuse This conveyor fuse is located on the front panel Replace if defective Fuse Holder Conveyor Switch Check and or Replace Same procedure as for fan switch D C Motor Control Board Speed Control Potentiometer Reversing Switch Conveyor Drive Motor Conveyor will not run S N 4390 to Q14974 1000 Series S N 4390 Q14790 1200 Series Voltage Supply 3 Amp Fuse Fuseholder Check for 120 VAC input to D C control board across L1 and L2 Check the 3 amp fuse on the D C control board Check for D C voltage at terminal F1 and F2 Voltage should be 100 VDC 10 steady If this voltage is not present replace D C control board Check for D C voltage output to the motor across terminals A1 and A2 this voltage should be approx 125 VDC at maximum conveyor motor speed This is a 0 to 400 ohm or 0 to 500 ohm 10 turn potentiometer WITH POWER OFF remove the red white and black leads from terminals S1 S2 S3 With a digital multimeter check the ohm reading across the red to black leads This ohm reading should be a steady 400 ohm or 500 ohm through the entire 10 turn rotation of the potentiometer Red to white should be 0 400 or 0 500 ohms as the pot is rotated Check for shorts or opens or unsteady ohm reading if potentiometer is defective replace If the potentiometer checks OK and there is no ou
17. 120 VAC through the Air Pressure Switch to the normally open contacts of the Burner Motor Relay and the primary of the 24 VAC Step Down Trans former The Transformer secondary supplies 24 VAC to the coil of the Burner Motor Relay the normally open contacts close within 30 seconds and through the Burner Air Pressure Switch to the normally open Centrifugal Switch When the Relay contacts close the Burner Blower Motor is energized As this motor reaches approximately 1600 R P M the Burner Air Pressure Switch closes and the motor s internal centrifugal switch closes supplying 24 VAC to the Gas Control Valve When the Gas Control Valve is supplied with 24 VAC the pilot valve is energized and the igniter circuit is energized Ignition should now occur After pilot flame is proven the main gas valve is energized The Burner Indicator Light is also energized CONVEYOR DRIVE Closing the fan switch and the normally open conveyor switch supplies 120 VAC to S N 4390 AND UP the Motor Control Board AC volts are converted to DC volts and are supplied to the Conveyor Motor at terminals A and A Adjustment of the Speed Control Potentiometer 5000 ohm 10 turn will change resistance at terminals P1 P2 and P3 varying the DC voltage to the motor The speed of the conveyor motor will 4 Impinger 1000 Series Service Manual International increase or decrease as the DC voltage from the board increases or decreases respectively As the motor turns
18. 2 hex head bolts from fan hub and remove fan from motor shaft NOTE Measure distance from fan blade to rear wall assembly before removal to aid in reassembly 9 Remove the eight 8 hex head bolts from the motor mount and slide the motor assembly out of the oven back 10 Remove heat slinger if so equipped by taking out the two 2 hex head cap screws then remove motor by taking off motor clamp and removing the four 4 mounting nuts and washers 11 Reassemble in reverse order When reassembling trim the motor mount bolts off after the motor is mounted if required Be sure the heat slinger if so equipped Is set at the proper clearance 3 8 approximately with 1 16 clearance at motor mount bolts When motor mount assembly is set on the oven back align motor shaft in the center of the hole Set fan assembly on the motor shaft NOTE Torque specs on bolts 150 in lb torque CAPACITOR MOTOR 1 Shut off power at main breaker 2 Remove motor cover from back of oven 3 Discharge capacitor 4 Remove and replace FAN MAIN 1 Shut off power at main breaker 2 Remove back assembly See motor main fan S N 100 4612 GAS S N 100 4767 ELECTRIC Impinger 1000 Series Service Manual International 53 FAN BLADE 9 3 4 IN 1 8 IN COOLING FAN Reinstall and locate fan so that the front of fan blades are 9 3 4 from inside of oven back See Drawing S N 4613 amp Above GAS S N 4768 amp Above ELE
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20. 5 as the pot is rotated from low to high Place the meter leads on the red lead P3 and on the white lead P2 Rotating the pot slowly from low to high the meter reading should show an even transition from O to 5 K ohms 596 There should be no dead or open spots through out the 10 turns of the pot Check all three leads to ground There should be no continuity to ground If any of the above checks fail replace the pot Conveyor will not run S N 4390 to Q190771000 Series S N 4390 Q147901200 Series Impinger 1000 Series Service Manual International DC Motor Control Board Check for 120 VAC input to the control board at terminals L1 and L2 If not present check the conveyor switch and wiring back to 3 amp fuse and then back to power source if necessary If 120 VAC is present at L1 and L2 check the VDC output at terminals A and A If a DC voltage is not present check the 4 amp and the 1 amp fuses on the control board Also reset and check the mini breaker in the armature line to the gearmotor If 120 VAC is present at terminals L1 and L2 but DC voltage is not present at A and A providing the 1 amp and 4 amp fuses are good replace the board If DC voltage is present at A and A but motor does not run check gear motor as follows Conveyor Gear Motor If DC voltage is present at A and A and the motor does not run first check the mini breaker and then the conveyor Refer to the next possible cause
21. 59 IGNITION CONTROL NOTE When replacing Johnson Controls G 60 or G 65 Ignition Control with the new Honeywell Ignition control the 24 VAG burner transformer rated at 20VA must be replaced with the larger rated at 40VA 369531 Transformer 1 Read all instructions supplied in kit before starting Tools required Center punch and 7 32 drill bit Shut off power at main breaker Remove control panel top and front panel Remove front panel Remove ignition control package from Johnson gas valve and discard The white flame sensor wire from the burner to terminal 44 on Johnson gas control is no longer used Cut Wire at burner and discard NOTE On some Impinger ovens it may be necessary to drill the mounting holes through the oven specification plate Use care to avoid drilling through any important information or agency approval markings on the specification plate 6 Use template supplied to locate and drill two 2 7 32 mounting holes for new Ignition Control When mounting new ignition control make certain that the green 467 ground wire supplied is installed properly 7 Connect wiring as follows Connect blue wire from gas valve to terminal marked P V on ignition control Connect black wire from gas valve to termainal marked M V P V on ignition control Connect red wire from gas valve to terminal marked M V on ignition control Connect white wire from indicator light to ground by using splice connection on green w
22. ABOVE 17 SCHEMATIC 1032 S N 019077 amp 18 SGHEMATIG4 1032 019078 amp ABOVE red 19 SCHEMATICA 1033 1094 1046 1047 user 20 SUFMEMATIG 1042 1043 S N 01427964 BELOW una ee 21 SGHEMATIG 1042 1043 S N O14280 S ABOVE usb 22 SGHEMATIG 1228 1229 SIN 014790 amp BELOW vaere ee 23 SCHEMATIC 1228 1229 SIN Q14791 amp ABOVE pda 24 SCHEMATICS T242 1249 sv 25 TROUBLESHOOTING GUIDE 1000 amp 1200 GAS OVENS 26 TROUBLESHOOTING GUIDE 1000 amp 1200 SERIES ELECTRIC 39 TROUBLESHOOTING GAS OVENS 1033 1034 1046 1047 46 REMOVAL INSTALLATION amp ADJUSTMENTS 53 MODEL SERIES 1000 521200 ne 53 PARIS MODEL SERIES 10004 1200 GENERAL vu u obi u au 80 BEOW UP 1000 1200 GENER Abs 81 PARTS7 MODEL 1002 1003 S N 2584 TO4389 ba aa a SA aa 82 BELOW UP 1002 1005 S N 2504 O ASO ea ohana aaa lala E 83 PARIS MODEL10021003 SIN 4390 amp UP use 84 BLOW UP J 1002 1003 SN 4390 8 ABOVE GS DG O Ge 85 PARIS MODEL ccrtc c ee 86 PMOI D 87 PARTO 026 102971082 a 88 BEOW UP 10281028 10 rea 89 PARIS MODEL 1030 SS ee 90 PEN UR SNE 91 PARTS 1042
23. Check the drive sprocket on motor out put shaft to Motor insure that it is tight Check motor windings measurements should be approximately 2 ohms Terminal 1 5 2 6 3 7 4 8 WITH POWER OFF Turn the motor shaft to check for jammed gear box If motor shaft will not turn replace conveyor drive stepper motor Impinger 1000 Series Service Manual International Time Temp Display 12 6 VAG Power Supply Measure the transformer primary inoperative for a nominal 120 VAC input Measure the secondary voltage output which will be 12 5 to 15 VAC normally Recheck secondary output at rear of Time Temp Display Terminals 1 to 3 should read 12 5 to 15 VAC Terminals 1 to 2 and 2 to 3 should be exactly 1 2 of the reading across 1 to 3 If you do not get the above secondary readings replace the transformer If 120 VAC primary voltage is not available refer to the schematic and trace circuit for incoming power failure There is a 4 amp fuse in each red secondary lead These may be jumpered for test only to determine if they are defective or intermittent Dual Belt Ovens Dual belt ovens utilize a double pole double throw switch which allows either of the optical encoders to be read from a single Time Temp Display Check switch and replace as needed Temp Display out or NOTE Time Temp displays Place your pyrometer thermocouple into the center inaccurate use two types of temperature between fingers T2 and T3 in the oven Disconnect
24. Motor Gearbox Assy includes R S T U R 1 369737 Hall EffectSensor 104 Impinger I 1000 Series Service Manual International BLOW UP CONVEYOR MOTOR ASSEMBLY S N 4390 amp ABOVE o COUPLING AND ENCODER DISC TACH GENERATOR TACH BRACKET MOTOR END Impinger 1000 Series Service Manual International 105 PARTS SERIES 1000 CONVEYOR LETTER P N DESCRIPTION A 369314 J TT TSN 2164 019077 Electric SSCS TT TSN 019078 8 above Electric SSCS 1 Replace with 369117 Complete Conveyor Assy pr 969880 Conveyor Guard Strap S 399000 LH Conveyor Guard VU 369084 LH Conveyor Idler Bearing Assy 36902 Sket pm VENE B D Lu 4 ay 2 O Q Sd C lt gt 106 Impinger I 1000 Series Service Manual International BLOW SERIES 1000 CONVEYOR S N 2163 And Below S N 2164 And Above Impinger 1000 Series Service Manual International 107 PARTS SERIES 1200 CONVEYOR CONTROL LETTER P N DESCRIPTION A SEEPAGE104 X B 2960012 Fuseholder D 369240 iat Conveyor Motor Control A S N Q4613 to Q14973 c M 369640 Conveyor Control Stepper S N Q14974 amp Above 0 sug 3708 Fuse Non Delay 1A250V 369201 _ Fuse4Amp250V
25. bracket in place Remove solenoid valve assembly Remove piping from solenoid valve Reassemble in reverse order TEMPERATURE CONTROL BOARD Gas Ovens OO OS E 1 2 3 4 9 Shut off power at main breaker Remove control panel top and front cover Remove relay box cover Disconnect wiring from temperature control board Make note of wire number and location for reinstallation Reassemble in reverse order lectric Ovens Shut off power at main breaker Remove control panel top and front cover Disconnect wiring from temperature control board Make note of wire numbers and location for reinstallation Reassemble in reverse order TEMPERATURE CONTROL POTENTIOMETER REPLACEMENT Ohi 58 Remove control panel top and front cover Remove one screw from control knob guard and move guard to one side Remove knob and locknut on control pot shaft and push out Remove three 3 wires from temperature control board Note wire numbers and location Reassemble in reverse order Impinger 1000 Series Service Manual International MERCURY CONTACTOR Shut off power at main breaker Remove control panel top and front cover Disconnect contactor wires and mark for reinstallation Remove screws from mounting bracket and replace contactor NOTE Be sure contactor is not mounted upside down as this will cause a constant on condition 5 Reassemble in reverse order pr THERMOCOUPLE REPLACEMEN
26. checks good the tach is usually bad If the board voltage output is unsteady beyond limits then the board is probably bad Always check the speed pot Be sure it is okay before changing a board or tach This test is not always 100 accurate as this test is not performed at operating speeds However this test is the best method currently available Readjustment should always be attempted at least once before replacement See procedure for board adjustment on page 65 DC Gearmotor If the DC control board is steady then the problem may be the motor or gearbox Check the brushes in the motor for excessive arching and or unusual wear Check the motor and gearbox from instruction located on page 34 under possible cause listing Conveyor gear motor 42 Impinger 1000 Series Service Manual International Conveyor will not Voltage Supply Check incoming voltage supply at Line 1 to neutral run S N Q19078 amp There should be a voltage reading of 120 VAG Up1000 Series S N See procedure for checking on page 26 Conveyor Switch Check for 120 VAC to conveyor switch If no voltage is present trace wiring back to the fan Q14791 amp Up1200 Series switch WITH POWER OFF Check continuity between switch terminals Conveyor Control Stepper Check for 120 VAG supply to primary of Transformer transformer if voltage is not present trace wiring back to the fuse holder If voltage is present check for output voltage from the tra
27. fan continues to run Check for 120 VAC to primary Check for adequate gas supply to oven of transformer Check for 24 VAC from secondary of transformer If there is primary voltage but no secondary voltage replace transformer Manual Gas Shut off Valve Check to see that manual shut off valve is open Fan Switch Check to see that fan switch is on Main Oven Fan Check if main oven fan is operating If not refer to Oven fan will not run Page 26 Impinger 1000 Series Service Manual International Burner Switch Check for 120 VAC to neutral on both sides of switch If switch is closed and 120 VAC is present on one side only replace the switch Air Pressure Switch Check for 120 VAC on both sides of switch If voltage present on one side only check for air tube blockage Adjust air switch If above fails replace air pressure switch NOTE Model 1004 amp 1005 For oven models 1004 and 1005 there is a 1 Amp fuse located between the 24 VAC output from the transformer and the coil of the burner motor relay If there is 24 VAC output from the transformer but no burner motor relay action check fuse and fuse holder Replace as necessary Burner Blower Motor Check for 120 VAC supply to burner blower motor If 120 VAC is present and motor does not run replace motor WITH POWER OFF turn blower wheel to check for locked rotor Centrifugal Switch of Burner Check for 24 VAC output from secondary of Blower Moto
28. indicates between 2 and 6 VDC Turn speed control dial to obtain a reading of 22 VDC on your meter Observe for approximately 30 seconds to see if stable within 0 5 VDC Repeat at 35 VDC Check speed of conveyor and adjust time temp display if necessary Seal pots with Glyptol or nail polish 66 Impinger 1000 Series Service Manual International L 1 A 1 A 4 A FUSE 1 A FUSE RESISTOR 4 A FUSE 1 A FUSE L olleooeoo MAX MIN IR CL TACH T2 MAX MIN IR CL TACH T1 T2 BOARD P N 369155 B BOARD P N 369272 STYLE 1 STYLE 2 AND STYLE 3 CONTROL BOARD ADJUSTMENT NOTE A digital meter must be used Voltage at L1 and L2 terminals of the control board is to be 120 VAC 10 Connect a digital voltmetet to terminal T1 and T2 set the meter on DC scale Turn speed control pot on oven control panel to its maximum speed setting Adjust the MAX pot so the voltmeter indicates 22 6 to 22 8 VDC Turn the speed control pot to its minimum speed setting Adjust the MIN pot so the voltmeter indicates 1 4 to 1 5 VDC Reset the speed control pot to its maximum speed setting and check if voltage is still at 22 6 to 22 8 VDC Readjust if necessary Reset the speed control pot to its maximum speed setting and check if voltage is still at 1 4 to 1 5 VDG Readjust if necessary If readjustment of either the MAX or MIN pot was necessary the opposite must always be checked until both MIN and MAX are in
29. is closed 120 VAC is supplied to the Temperature Control The Temperature Control Potentiometer 2 5K ohm is adjusted to desired temperature The Thermocouple will provide varying millivolts to the Temperature Controller The Temperature Controller switches the L2 line of the Contactor coil at intermittent intervals to maintain desired temperature Closing the fan switch and the normally open conveyor switch supplies 120 VAC to the Motor Control Board AC volts are converted to DC volts and are supplied to the Conveyor Motor at terminals A and A Adjustment of the Speed Control Potentiometer 5 000 ohm 10 turn will change resistance at terminals P1 P2 and P3 varying the DC voltage to the Conveyor Motor The speed of the conveyor motor will increase or decrease as the DC voltage from the board increases or decreases respectively As the motor turns it drives both the reducer gear box and the tach generator The tach generator is a DC voltage generator which supplies a voltage to the DC motor control board and is used as a reference for maintaining a constant conveyor speed The Time Temp Display is energized when the Fan Switch is closed supplying 120 VAC to the primary of the12 6 volt Transformer The secondary output of the transformer normally 13 to 14 VAC depending on input with a center tap is supplied to terminals 1 2 and 3 of the Time Temp Display The center tap is terminal 2 The display works on a balanced input and center tap
30. leading from the 12 6 VAC transformer to the display If this does not solve the problem it may be coming in through the commercial power lines Suggest that customer contact his power company for evaluation Temp Display inaccurate Perform the power supply check the thermistor erratic or inoperative probe check and then perform the time temp simulator test Refer to page 72 for instructions Remember when using the time temp simulator remove all the leads from the back of the display except the 3 power leads After completion of this test and if reinstalling back into the oven the dip switches must be reset for oven operation 44 Impinger 1000 Series Service Manual International Time display inaccurate erratic or inoperative Optical Encoder Time Display inaccurate erratic or inoperative S N Conveyor Drive Stepper Q19078 amp Above1000 Control Series S N Q14791 amp Above1200 Series Hall Effect Sensor Conveyor Drive Stepper Control Impinger 1000 Series Service Manual International Perform all checks as in the above evaluation If the time check is okay refer to the next section optical encoder The above time temp test should have already been performed Remove dust cover from the gearmotor and inspect the coupling and encoder disc The coupling set screws should be tight and not slipping on the motor shaft or the tach generator shaft The encoder disc should be firmly attach
31. module Type IV is 5 5 8 inches wide x inches deep Impinger 1000 Series Service Manual International Type IV has adjustment pots In the center board If temperature is still inaccurate after above calibration and troubleshooting use the following to check the High Temp Pot normally the High Temp Pot does not require adjustment Occasionally the pot is accidentally moved or needs adjustment Refer to the following drawing showing proper adjustment of the High Temp Pot BOTTOM OF TIME TEMP DISPLAY DOO 000 DOD 0000000000 test leads here reading should be 26 5 ohms if not adjust pot range 0 34 ohms SWITCH DISPLAY SET Shut off power at main breaker Remove control panel top Disconnect wires from time temp display terminals 5 and 6 Pull off black operating knob and remove hex mounting nut Reassemble in reverse order Suge ISS PROCEDURE FOR USE OF TIME TEMP SIMULATOR NOTE DO NOT CHANGE TEMP POT TEST PROBES SHOULD READ 18 OHMS Check incoming power to display at Terminals 1 2 and 3 Approximately 13 VAC at 1 3 6 5 VAG at 1 2 6 5 VAC at 2 3 WithpowerOFF removeleadsfrom4 5 6 7 8 9 and10 Installtime temp simulator terminals 4 7 9 10 To identify display type MEASURE WIDTH OF COVER ON DISPLAY Typelis 51 8 inches wide Type Il is 5 5 8 inches wide Type I amp have a position dip switch module Type has 10 position dip switch module to
32. most of the problems listed under oven will not heat can cause intermittent failure Conveyor will not run Conveyor Switch Check for 120 VAC to conveyor switch If no voltage is present trace wiring back to the power supply WITH POWER OFF Check continuity between switch terminals Conveyor Control Check for 120 VAC supply to primary Stepper Transformer of transformer if voltage is not present trace wiring back to the fuseholder If voltage is present check for output voltage from the transformer secondary NOTE this control transformer outputs 2 secondary voltages Red Leads 29 VAC Brown Leads 10 VAC If BOTH secondary voltages are not present replace the transformer Speed Adjustment This is 0 to ohm 10 turn potentiometer Potentiometer WITH POWER OFF remove the 3 pin potentiometer cable plug from the motor control board With a digital multimeter check the ohm reading across the red lead to the black lead this reading should be 50K ohms 5 as the potentiometer is rotated through its 10 turn rotation Place the meter leads on the red lead and white lead Rotating the potentiometer slowly from low to high the meter should show an even transition from 0 to 50K ohms 5 through the 10 turn rotation of the potentiometer There should be no dead or open spots through the 10 turns of the potentiometer Check all three leads to ground There should be no continuity to ground If any of the above checks fail
33. of 575 RED POTENTIOMETER transformer marked with 2 5 K OHMS green gold or silver dot L 1 120 VAC THERMOCOUPLE TYPE J 78 Impinger 1000 Series Service Manual International TEMPERATURE CONTROL POTENTIOMETER REPLACEMENT Ae ae po cs Remove control panel top and front cover Remove one screw from control knob guard and move guard to one side Remove knob and locknut on control pot shaft and pushout Remove three 3 wires from temperature control board note wire colors and location Install new control pot in reverse order and check system operation NOTE If temperature control knob is type with temperature numbers on it adjust it to agree with the time temp display for knobs with reference numbers only 9 is 500 F 260 C RELAY ASSEMBLY BURNER BLOWER MOTOR REPLACEMENT EN R ae be Remove control box top and front cover Remove cover from relay box Remove wire from ignition control 20 Remove two 2 wires from transformer 21 and 23 Remove wire from burner blower motor connector plug requires pin extractor tool 369600 73 Remove nut and washer from rear of relay assembly and remove assembly Install new relay in reverse order and check system operation TEMPERATURE CONTROL REPLACEMENT 1046 1047 eee Remove control panel top and front cover Remove one screw from control knob guard and move guard to one side Remove temp control knob and locknut Remove six 6 wi
34. of light assembly and slide sideways to remove Reassemble in reverse order and check IGNITER SENSOR ASSEMBLY REPLACEMENT PP Remove control panel top and front cover Remove gas valve assembly See Gas Valve Remove screws from burner tube and pull burner assembly out Remove wire connectors from igniter sensor assembly Remove screws from mounting bracket and remove assembly Reassemble in reverse order and check system operation NOTE After installation check all pipe fittings for leaks BURNER BLOWER MOTOR REPLACEMENT pog o Remove control panel top and front cover Remove screws around blower tube Disconnect motor wiring and remove Reassemble in reverse order and check system operation TEMPERATURE CONTROL BOARD REPLACEMENT MODEL 1030 DOP DE Remove control panel top and front cover Remove potentiometer leads 3 note color and location Remove thermocouple leads 2 note color and location white pos red neg Remove power and solenoid leads 4 note wire number and location Remove screw and board assembly and replace Reassemble in reverse order and check system operation NOTE When replacing 369174 with new 369728 turn temperature control to its maximum position and allow oven 30 minute preheat then calibrate board as follows Place temperature probe between top fingers 2 and 3 making sure probe is not touching any metal and adjust potentiometer P6 to a Maximum temperature
35. pot be sure it is okay before changing a board or tach This test is not always 100 accurate as this test is not performed at operating speeds However this test is the best method currently available Readjustment should always be attempted at least once before replacement See procedure for board adjustment on page 65 DC Gear motor If the DC control board is steadythen the problem may be the motor or gearbox Check the brushes in the motor for excessive arching and or unusual wear Check the motor and gearbox from instruction located on page 34 under possible cause listing Conveyor gear motor Conveyor will not run Voltage Supply Check incoming voltage supply at Line 1 to neutral S N Q14974 amp up1000 There should be a voltage reading of 120 VAG Series S N Q14791 amp up 1200 Series See procedure for checking on page 26 Conveyor Switch Check for 120 VAC to conveyor Switch If no voltage is present trace wiring back to the fan switch WITH POWER OFF Check continuity between switch terminals Conveyor Control Stepper Check for 120 VAC supply to primary of Transformer transformer if voltage is not present trace wiring back to the fuse holder If voltage is present check for out put voltage from the transformer secondary NOTE this control transformer outputs 2 secondary voltages Red Leads 29 VAC Brown Leads 10 VAG If BOTH secondary voltages are not present replace the transformer Impinger 100
36. present and unit is not heating see Solenoid Valve Remove thermocouple leads from the temperature control board and measure the millivolt output of these leads Refer to chart on page 59 for proper readings If the thermocouple probe checks good then the problem is usually with the temperature control board If output voltage is present at temperature control board check for voltage at solenoid valve If voltage is present listen for valve to open and close Also check for opens shorts in coil Replace as needed Check for 120 VAC across L1 and L2 on temperature control board If no voltage is present retrace wiring back to power supply Turn the temperature adjustment knob to the maximum temperature position and check for 220 VAC at the load terminal to neutral If 220 VAC is not present proceed as follows If 220 VAC is present and unit is not heating see Flame Monitor Check for 220 VAC at terminal COM on temperature control board If no voltage is present trace wiring back to ignition control Remove thermocouple leads from the temperature control board and measure the millivolt output of these leads Refer to chart on page 59 for proper readings If the thermocouple probe checks good replace temperature control Check for 220 VAC at terminal 1 If no voltage is present trace wiring back to temperature control Check for 220 VAC output at terminal 8 NOTE There is a delay of up to 2 seconds for 220 VAC output at
37. see that the high voltage ignitor circuit is also energized To check disconnect the ignitor lead from the ignition control Place the terminal of ignitor lead approximately 1 8 from terminal post on Ignition Control Spark should jump the 1 8 gap If no spark is present replace ignition control If the ignition control is supplied with 24 VAC and the pilot valve in gas valve and ignitor circuits are energized visually check for pilot flame This may be done by opening the small inspection door on the end of the burner or by opening the main oven door and looking under the lower finger housing in the right side of the oven If no pilot flame is visible check to see that the pilot shut off valve is open shut off valve is located between gas valve and burner Pilot Tube Check for gas pressure at pilot tube Disconnect pilot tube at burner and connect manometer to pilot tube If no gas pressure is present check for blockage in pilot tube or pilot shut off valve pilot orifice for obstructions Replace as needed 28 Impinger 1000 Series Service Manual International Burner Ignitor Check the burner ignitor head for any obstructions also check for frayed or broken wire any type of damage to spark gap 100 in 2 5 mm If there is visible damage replace ignitor assembly Pilot flame but no main Spark Ignitor Flame Sensor There should be a visible pilot flame at this time flame NOTE The Honeywell Ignition Con
38. switch only check the following Check for proper gas pressure supply to gas valve Marked on oven spec plate Check for proper adjustment of gas pressure switch Should be set at 8 8 Nat 23 L P 2 0 Town Gas Check gas filter in gas valve for blockage or damage See Adjustment Section for location If the above checks okay but switch still not closed replace gas valve Air Pressure Switch Check for 220 VAC on both side of switch If voltage present on one side only check for air tube blockage or misalignment adjust air switch If above fails replace air pressure switch Hi Limit Thermostat Terminals are normally closed If open reset and test oven for proper operation If thermostat will not hold for maximum oven temperature and oven is not exceeding temperature dial setting check for proper location of capillary bulb in its spring holder If above checks okay replace hi limit thermostat Ignition Control Check for 220 VAC supply to ignition control at pin 1 and neutral If voltage is not present retrace wiring back to hi limit thermostat Check for 220 VAC at pin 6 to neutral Power to burner motor relay If voltage present proceed If no voltage is present wait 30 seconds and check reset button If above fails replace ignition control Burner Motor Relay Check for continuity to 220 VAC coil Check for power to relay coil 220 VAC Check for 120 VAC to relay contact terminals Visually check for contact pull in Burn
39. terminal 8 If there is no voltage output at terminal 8 check the reset button Replace control as needed Check for 220 VAC at relay coil if no voltage is present trace wiring back to flame monitor Check for 120 VAC to relay contacts If no voltage is present trace wiring back to power supply Check to ensure contacts are closing Replace relay as needed Check for 120 VAC at valve if no voltage is present trace wiring back to relay If voltage is present listen for valve to open and close Check for opens or shorts in coil Replace as needed 49 Main Flame will not Flame Monitor There should be a visible main flame at this time stay lit To check for flame monitor operation connect a digital volt meter capable of measuring D C micro amperes between the flame sensor and terminal 15 on the flame monitor The flame monitor requires a minimum of 4 micro amp D C for proof of flame If these readings are not achieved replace sensor assembly Also check for any type of damage to flame sensor wire and connections If the reading is above the minimum required and the flame monitor will not supply 220 VAG to the relay coil replace the flame monitor Intermittent Heating As Follows Both the main fan motor and burner blower motor are equipped with thermal protection and will cease to operate if overheating occurs This can cause the units to cycle on and of intermittently This may be caused by improper ventilation Also
40. the optical encoder disc The disc should not be touching the optical encoder assembly and the encoder assembly should be mounted so it is squarely facing the coupling shaft This is to allow the infrared beams to be broken by the encoder disc If all this is okay then replace the optical encoder assembly Impinger 1000 Series Service Manual International 37 Time Display Conveyor Drive Perform all check as in the above evaluation If the inaccurate erratic or time check is ok refer to the next section Check to inoperative S N see if the conveyor drive stepper motor is running Q14975 amp Above1000 Stepper Motor If motor is not running refer to Conveyor will not Series S N Q14791 amp run on Page 35 Above1200 Series Check to insure that the magnet cemented to shaft of conveyor drive stepper motor has not been damaged or come loose from motorshaft Replace as needed Hall Effect Sensor Check for any physical damage to Hall Effect sensor mounted on conveyor drive stepper motor Check all wiring and connections for damage Conveyor Drive Check all connections for tightness or proper Stepper Control location and check all wiring for visible damage Replace as needed If there is still no time display wire in temporarily a new conveyor drive control If there is still no time display reconnect original conveyor drive control Replace Hall Effect Sensor 38 Impinger I 1000 Series Service Manual Inter
41. voltage is not present retrace wiring back to hi limit thermostat Check for 220 VAC at pin 46 to neutral Power to burner motor If voltage is present proceed If no voltage is present wait 30 seconds and check reset button If above fails replace ignition control Burner Blower Motor Check for 220 VAC supply to burner blower motor WITH POWER OFF turn blower wheel to check for locked rotor If 220 VAC is present and motor does not run replace motor Burner Blower Motor Air Check for 220 VAC switching to pin N O as the Pressure Switch air pressure switch closes For Honeywell ignition control only connect a temporary jumper wire for testing purposes only from pin C to pin N O on ignition control to bypass air switch Check for air tube blockage or misalignment adjust air pressure switch If the above fails replace air pressure switch Impinger 1000 Series Service Manual International Spark Generator After a pre purge time of 30 to 60 seconds after blower motor starts check for 220 VAG to spark generator If voltage is not present check reset button on ignition control If voltage is present visually check for spark at ignitor head Check for visible damage to ignitor sensor assembly If there is no visible damage to the components and no spark replace the spark generator If there is visible damage to the ignitor sensor assembly replace Also check for frayed or damaged wire in burner tube Gas Valv
42. 0 Series Service Manual International 35 Time Temp Display inoperative Temp Display out or inaccurate 36 Speed Adjustment Potentiometer Conveyor Motor Stepper Control Conveyor Drive Stepper Motor 12 6 VAG Power Supply Dual Belt Ovens NOTE Time Temp displays use two types of temperature sensor Thermistor Probe 2 yellow wires Thermocouple Probe 1 red wire and 1 white wire Thermistor Probe This is a 0 to 50k ohm 10 turn potentiometer WITH POWER OFF remove the 3 pin potentiometer cable plug from the motor control board With a digital multimeter check the ohm reading across the red lead to the black lead This reading should be 50k ohms 5 as the potentiometer is rotated through its 10 turn rotation Place the meter leads on the red lead and white lead Rotating the potentiometer slowly from low to high the meter should show an even transition from 0 to 50k ohms 5 through the 10 turn rotation of the potentiometer There should be no dead or open spots through the 10 turns of the potentiometer Check all three leads to ground There should be no continuity to ground If any of the above checks fail replace the potentiometer NOTE if the conveyor drive motor becomes jammed or begins to run at an uncontrolled speed the conveyor motor will stop running To reset turn off the conveyor switch wait 10 seconds turn the conveyor switch on If the motor does not run after attempting re set check f
43. 0V 13 ohms approx If all readings are not correct replace elements as needed The mercury contactor has probably malfunctioned in the closed position If there is no voltage to the operating coil but there is high voltage at the contactor output replace the mercury contactor Check incoming voltage supply at line 1 to neutral There should be a voltage reading of 120 VAC If not present check breakers This conveyor fuse is located on the front LETS CHI G a eee if defective Fuse Holder Check and or Replace Conveyor Switch Same procedure as for fan switch Check for 120 VAC input to D C control board across L1 and L2 Check the 3 amp fuse on the D C control board Check for D C voltage at terminal F1 and F2 Voltage should be 10 VDC 10 steady If this voltage is not present replace D C control board Check for D C voltage output to the motor across terminals A1 and A2 this voltage should be approx 125 VDC at maximum conveyor motor speed Impinger 1000 Series Service Manual International This is a 0 to 400 ohm or 0 to 500 ohm 10 turn potentiometer WITH POWER OFF remove the red white and black leads from terminals S1 S2 S3 With a digital multimeter check the ohm reading across the red to black leads This ohm reading should be a steady 400 ohm or 500 ohm through the entire 10 turn rotation of the Speed Control Potentiometer potentiometer Check for shorts or opens or unsteady o
44. 1000 Series Service Manual International 29 Light 4 in 24VAC at terminal 6 of Johnson control valve or 24V on Honeywell Control Light 5 in 24VAC at terminal 1 of Johnson control valve or PV on Honeywell Control Light 6 in 24VAC at terminal 43 of Johnson control valve or MV on Honeywell Control CODE All lights off lights of main power main fan off air pressure switch out 1 on 2 off 3 on 4 off 5 off 6 off Burner Motor Relay bad 1 2 on 3 on 4 off 5 off 6 off Burner Motor Centrifugal Switch bad 1on2on 3 on 4 on 5 off 6 off gnition Control bad 1 2 3 on 4 on 5 on 6 off Pilot Shield missing or warped Flame Sensor bad Pilot Orifice plugged or Gas Valve bad 1 2 3 on 4 5 on 6 on Unit still not working Main Orifice plugged Gas Valve bad Temperature Control bad However Main Orifice would not be intermittent problem 30 Impinger I 1000 Series Service Manual International Model 1030 1031 Oven will not heat Check for adequate gas supply to oven Check to Shut Off Valve see that manual shut off valve is open Main Oven Fan Check if main oven fan is operating If not refer to Oven fan will not run Burner Switch Check for 220 VAC to neutral on both sides of switch If switch is closed and 220 VAC is present on one side only replace switch Gas Pressure Switch internal Check for 220 VAG to neutral on both sides of switch If voltage is present on one side of
45. 253 JIWIT H9IH LVISONHIHL ZL 10114 YOSNIS IWVIY 153 9 171002 X08 70 1 02 LVISOWHSHL LL VE YOASANOD 3503 UOLVH3N39 28 45 95 VE 43480 JSNYNL 3505 24 HOLINS 13534 1003201 S VOL HOLOW 350143 14 380563944 JIY NJAO HOLIMS 95 71031403 SYNLVYSdWIL JINOYLIITI 38065384 YIV H3M018 YINYNG 211 5 55 55 104 553 84 LINI SYS HOLIMS PS 703140 HOAJANOI 99 HOLIMS ES OM 574 HOLIIVdVI 12 HOAIJANGJ 211 5 25 NIYW 10 81 02 HINYNE 228 10114 10HLNOO UINYNG 108 HUVIY Y a NJAO 21185 15 HININ NIYW 69 69 93 59 GF 72 8 GI te go e VA Lx Impinger 1000 Series Service Manual International im PEK XE 52 P E gt Heeh r PANE ER s LES g 1 50 BO 22600069980 3 6196 20 SCHEMATIC 1042 1043 S N Q14279 amp BELOW 642510 OJ SJaquinu 61496 EOL STIAGON OVA 02 10H1NOO HINHOJSNYHL OVA r IOHLNOO HINUNG H3AHOJSNYHL OVA 921 L L H3AHOJSNYHL NIV JATA 10114 JAWA NOILWINOSY IUNLVYIdNAIL JAWA AV1dSIQ d N3 L 3WIL A aN3SSY 1Od JUNLVHJIdNIL HOLSINHIHL 31dnOOONWH3HI H313NOHOVL 19913144435 UIMOTA YINUNE HOLMS 135 HOLIMS 91 038
46. 342 X Knob Temperature Control W 369340 Potentiometer Temp Control amp Harness U X 39132 Temperature Control Board 3931 Thermocouple Probe 1 0 O Z 9691 73 Control Transformer 0 0 00 0 O 3955 Cord Set Cooling Fan DD 369253 Speed Pot A S N 14974 amp Below 369254 Speed Pot S N 14974 8 Below 369652 Speed Pot Stepper S N 14974 amp Above 0 lt N lt x S lt C 96 Impinger I 1000 Series Service Manual International BLOW UP 1228 1229 SE Impinger 1000 Series Service Manual International 97 PARTS 1242 1243 LETTER P N DESCRIPTION B 357107 2 369014 Fue 10 D 28 Kn E 369252 369260 Switch On Off 504 Lens Yelow H 369131 Thermocouple o 1 369507 Thermostat Cooling Fan 369025 Air Pressure Switch LE 369363 Cover Relay 0 0 0 0 0 0 M 369543 Transformer Power 3973 126 0 00 0 0 O 369898 nition Control P 369931 Finger Guard Q 369366 BumerBlwerMotr 369317 Temperature Control Pol 0 0 0 0 0 S 369193 JThemiser ms T 369167 2 JSetSwth U 369172
47. 9 OVAS9 Z1 71 1 V344035NYUL HOAIANOI YOLOK 3041402 YOAZANOD 99 SHITO02 H010M OWS 0112 4 2 101 d AWA N3A0 80108 9417003 X08 WULNOD LYLSOMMIHL NOLLVMNOIU IHNLVYUIMIL JAWA LA LINSVH E 031405 UNG 14510 dMIL IHIL 1 1 HOLIMS 3890SS3ud ULV SOLVJIONI URE HYI 6 1 NS Impinger I 1000 Series Service Manual International 22 SCHEMATIC 1228 1229 S N Q14790 amp BELOW 6001 8001 ST3GON SdV es 94 OVA 02 H3MOd BINHOJSNVHL OVA FZL 1 1 H3WHO3SNVH1 AV1dSIO dN3L 3AUL 5 104 AUNLVYHIGNAL HOLSINYIHL 3dAL 31dnOOONH3HI uu 8313 AVTdSIG YY3Y LNOH 4 HOLIAS 13S HOLIAS LV3H HOLIAS HOLIMS NJAO HOLMS HOLOW NY3 N3AO AY 13H LYX eS GER NG THX iux LL 21 ss es 25 is ig LS THX H3GO9N3 1V9113O HIQODNA 71951430 NY4 HOLON HOAJANOD HOLON HOLON NJAO HOLOM HOIH LYLSONHIKL HOLVOIQNI LV3H dWY1 1N3W313 ONLLYIH WOS H3LV3H ISNA VE HOA3ANOO 36504 VY YINYUOISNVYL dMIL INL ISNI Vi H3AHOJSNYUL 3613 118 23 230 130 SW PA EN ZN LA 64 44 94 4 vi Cd VOL HOLOW 3573 JOULNOI 3UNLVHIdMNIL 29INOHLO313 8 A18W3SSY 104 HOA3
48. 9078 amp Above o 957028 Fuse Non Delay 1A 250V 1 0 0 0 369201 4 50 0 370046 9 Uses 369009 Thermocouple 9390082 4 8 Impinger 1000 Series Service Manual International BLOW UP 1028 1029 1032 0 A eon Impinger 1000 Series Service Manual International 89 PARTS MODEL 1030 LETTER P N DESCRIPTION A J K Sensing Rod Kit 369155 Conveyor motor Control Board SIN17170 amp Below 369640 Control Stepper SIN 17171 amp Above 369240 SSCS 89938 r 369173 Control Transformer S 3995 4 Spark Generar O O T 3579 Alarm Burer Shutdown 0 3693 Finger Guard Cooling Fan V 369868 ThemosatHilimt TT WT 36973 lgntionContol220 VAST X 369728 Temperature Control Thermosta Y 38985 TZ 39735 Temma 3Poe O DD 3909172 Digital Display o 369589 BumerBlowerMotor 220V Sm 17171 8 Above 00 oa HR N lt x S lt Cc 9 cO 0 Impinger 1000 Series Service Manual International BLOW UP 1030 405 NON p Impinger I 1000 Series Service Manual International 91 PARTS 1042 1043 LETTER P N DESCRIPTION B 369247 ShaftLockRing D 37007 FuseHolder 02 369014 Fuse10Amp 02 1 3907
49. AC to the Gas Control Valve When the Gas Control Valve is supplied with 24 VAC the pilot valve is energized and the igniter circuit is energized Ignition should now occur After pilot flame is proven the main gas valve is energized The Burner Indicator Light is also energized CONVEYOR DRIVE Closing the Fan Switch and the normally open Conveyor Switch supplies 120 VAC S N 100 to 4389 through a 3A Fuse to the Motor Control Board AC volts are converted to D C volts and are supplied to the Conveyor Motor at board terminals A1 and A2 through a D P D T Reversing Switch Adjustment of the Speed Control Potentiometer 500 ohm 10 turn will change resistance at terminals 51 S2 and S3 varying the D C voltage to the motor The speed of the Conveyor Motor will increase or decrease as the D C voltage from the Motor Control Board increases or decreases respectively S N 4390 and UP Closing the fan switch and the conveyor switch supplies 120 VAC to the Motor Control Board AC volts are converted to DC volts and are supplied to the Conveyor Motor at terminals A and A Adjustment of the Speed Control Potentiometer 5 000 ohm 10 turn will change resistance at terminals P1 P2 and P3 varying the DC voltage to the motor The speed of the conveyor motor will increase or decrease as the DC voltage from the board increases or decreases respectively As the motor turns it drives both the reducer gear box and the tach generator which supplies a voltage t
50. ANOO A18W3SSY 104 HOA3ANOO HOLIVINOD 1041409 HOA3ANOO gt HOA3ANOO gt YL O UINVIUG LINDHIO UINVIUG LINDUID HOLIOVaYO ONMOOS NJAO LYLSONHIHL M3NHn8 JUNSSIUd HIV t 313 tdd 299 199 285 182 SdY LT 23 Impinger 1000 Series Service Manual International SCHEMATIC 1228 1229 S N Q14791 amp ABOVE 0647 0 UIGWAN 1VIH3S 62 1 pue 8 STIGON WN 01408 131510 2078 NOILNGIYLSIG NJAO 30 1043 HOdJ 2 180830 1041405 MOAJANOO HIWYOJSNYHL W3 0d M3WHOISNYYL 12 OVA9 Z1 L L 9INYOISNYML AVTdSIG dWIL IW IL ATENISSV 104 3UNLVYIdWIL f 3dAL 31dn020Wu3H1 WINITd LIWIT IH L LSOWYSHL LIWIT IH LVLSONYIHL 123136 3411 33 8 21185 sakke FEBER YJLYIH 21185 2 HOLIMS N3AO 211 5 SYOLIVLNOD 80108 1337 9 411002 YOLOW C42v8 1NO4 4 BO LOW 9 9411009 YOLON N3AO0 uOLOM C49 v8 LNOU3 L3N9 VM WO1VOIQNI 1V3H dWY1 2 8 1 0440 05 35 193343 YH 00554331 3 rf pr b b VE 43711081802 3811 834831 35n4 3ov8 HOA3ANO2 ISNA VE 1 0 1 HOAIANOI 3504 VE u3MOd
51. CTRIC FAN SPIDER NOTE MEASUREMENT MUST BE ka MADE FROM CONE TO FAN SPIDER 1 1 2 INCH FAN HUB CONE y Reinstall and locate fan so that the bottom of the fan spider is 1 1 2 from the top of the oven back cone See Drawing RELAY D P S T DOP Shut off power at main breaker Remove control panel top and front cover Remove cover from relay box Disconnect all wires and mark for replacement Remove relay by removing two 2 mounting screws Reassemble in reverse order COOL DOWN SWITCH el Shut off power at main breaker Remove control panel top and front cover Remove the two 2 wires from the switch located on the back wall of the control box Remove two 2 screws from the switch bracket Reassemble in reverse order check condition of teflon insulator and be sure a aluminum sensing rod contacts the switch body COOLING FAN CONTROL BOX 4 2 3 4 5 T 1 2 54 Shut off power at main breaker Remove control panel top and front cover Remove four 4 screws from the fan frame Disconnect female cord receptacle and remove fan Reassemble in reverse order HERMOSTAT COOLING FAN Shut off power at main breaker Remove control panel top and front cover Impinger 1000 Series Service Manual International 3 4 5 Remove lead wires and mark for reassembly Remove two 2 screws and remove thermostat Reassemble in reverse order BURNER BLOWER MOTOR 1
52. Conveyor Motor Control B S N Q4613 to Q14973 0 sp 3708 Fuse Non Delay 1A250V 369201 Fuse 4 Amp 250 1212 369665 JJChanGuad 369242 Sprocket 1 2 Stepper S N 014791 amp Above 108 Impinger 1000 Series Service Manual International BLOW SERIES 1200 CONVEYOR CONTROL Impinger 1000 Series Service Manual International 109 PARTS SERIES 1200 CONVEYOR LETTER P N DESCRIPTION 3627 Retaining Block Inner 395 Flanged Bearing 5010 TT C 36976 inner Drive Shat TT p 369274 Flanged Bearing 75 D k 93609 Blank Drive Gear TT LL 369038 Rol Conveyor Notched m llerSh tOuer S S N 93660 Conveyor Pan Stop x o 35098 Nu102d p 360607 Lockwashe SS 0 TT 969582 CompessonSpig x pr 360206 OmmbPam O 110 Impinger I 1000 Series Service Manual International BLOW SERIES 1200 CONVEYOR AN NN NNNM AWV SAN WAN MANAN Impinger 1000 Series Service Manual International 111 112 ATUM Lincoln lt 5 gt MSS SERVICE AND PARTS Impinger I 1000 Series Service Manual International
53. Cooling Fan Thermostat 869060 Sprocket 2 S n Q14971 amp Above See Page 104 Blower Air Switch 369155 Conveyor Motor Control Board S N 4390 Q14970 369640 Control Stepper S n Q14971 amp Above P 26960240 Q 369173 Control Transformer R 36907 Temperature Sensing Switch Z 1 369902 SensingRod Kit S 1 3691584 JJ7AmpCicutBreker T 399 0 lgntionConrolNATLP 2 U 369831 Finger Guard Cooling Fan V 369085 Junction Box 2 W 895302 J Temialug 1A 4 O X 36398 4 Cover junction Box Blank 0 0 3917 Pot Temperature Adjustment w Faceplate Z 869167 X Set Switch Assy 0 369046 Buttonony O Gas Valve Body Only NAT LP DD 369344 Pilot Shut Off Vave 369099 Main Burner Orifice LP gas 8969100 Pilot Orifice LP Gas 1 1 0 0 0 OO 9 369366 Burner Blower Motor Kit PP 3969581 Transformer 120 24V 40VA QQ 3970 Electronic Temperature Control lt C410 cO 2 Impinger 1000 Series Service Manual International BLOW UP 1042 1043 SUV ZITI Impinger I 1000 Series Service Manual International 2 E 5 N A Ye d RAN AE IDG ES 4 a Lu eee 93 PARTS 1033 1034 1046 1047
54. HINYOAISNYYL 36504 VOL 80108 3 3503 pi VOS YILVIH 3614 64 4 JOHLNOI 9140419973 IVA 55 104 NOA3ANO2 14083 ATBWISSY 104 BOA IANO 32v8 1N083 1081802 2 03 574 YOLIDVdVI 9417009 N3AQ LVLSCWH3HL 211 6 35066344 keke EEE a lt 5 Impinger 1000 Series Service Manual International 24 IYLS 10 f 3dAL 31d0020HU3HL 2 805 35 123333 TVH 193135 3 11 33Y8 HJLIMS HOLIN9 23657305436 3Wv11 753753 79903151939 438078 HINYNG HILIMS 75 VE XOVG HOA3ANOO ISNI Vi HINGNG HILIMS YE 1 083 HOA3ANOO 3SN4 3 NJAO 30 1NOH4 HOS YOAJANOI HILIMS HIWHOJSNYYL UIMOd 13503 Zd pue rA ST3IGON SH3BWhN 3HIA 8 NJAO HOLEMS TS VOL 3503 13 43904 UIWYOISNYUL 80104 TH 1081802 JYNLVYIdWIL 21N0u12313 513 7041409 UIKWYOISNYUL EBX 1337 9 171002 SW 33v8 Al WISSV 104 843 DVAPZ 1081802 83 8 HIWYOASNYHL ZEX 838018 H3NH08 NOlOM 18084 AT MISSV 109 145 19 9 ZL 1 1 8384035 81 THX YJY8 1808 40 YOAZANOD YOLOW EW 2 8 1 083 1041402 HOA3ANO3 32 NIWA JAWA EA INYA 9 171002 YOLOW CH 038672 HOLIIVdVI TI 10114 JAWA Z NJAO 801084
55. IMS PS Jinouto HALVIH asna 93 LINDHID 89 Sued patap SI YAUM 041002 4 T des peddinbe lieuiB5lio exem 0990002 2equinu jwues uua SHUN 1545 HOA3ANOO HOLIMS ES dNY bd HOLON NIYN AOLE 64 HOLIOVdYO 19 ASdS ONILY3H HOLIMS 25 3snd LINI1HDIH ALIAVO LYLSONHIHL 218 1648 NVI HOLIMS 1S 810HANOO HOLON NYI NIYIN dWY OL 38n4 74 1009 LYLSONUIHL HE 1344 NYd AVTAR LH HOLON OL aSnd 14 sunssSaktid HIY HILIMS SdY HINHOJSNVHL ania HO 100 N3349 10 100 BATS MOT13A 213 94 ES CIS Impinger 1000 Series Service Manual International 12 SCHEMATIC 1006 TO SERIAL NUMBERS Q14279 6 Zt LO 01 4 glas 9001 13GONW VE HOA3ANOO 3SN4 4 HOA3JANOO HOLIMS 25 H3HHOJSNYHL dW31 3WLL ISNA rd 63 OVAOZL TOHLNOO HINHOSSNVHL EHX NY N3AO HOLIMS LS VE H3HHOJSNYHL 3503 Zd OVA 92 10H1NOO HINHNG H3WHO3SNVHI ZYX HOLINDI XuYdS 16 VOL SOLON SSN td OVA 921 L L S3WHO3SNVHL LUX ZH A18W3SSY 104 HOASANOO do NIVW ZA HOLOW NJAO AY13H LH JOHLNOD HOAJANOO 99 LO Nd 3A1VA LA H3GOON3 TWOUdO 30 vzo YIN
56. INHOJSNYUL CHX OVA IZL L L UINHOISNVUL NIYN SATIVA 3ufn1vH3dW3 AW1dSI0 dWAL SWIL Al8W3SSY 104 YOLSINHIHL 31d109ONWH3HL H3ILSWOHOVL HOLIMS UOA3ANOO HOLIMS HOLIMS HOLVHINEID XHYdS GA LA 1 di HL 91 1 ts 25 IS os AVTIU HOLOW N3AO AY13t 3 121140 H3 AAO18 HINHNG HOLOM HOA3ANCO HOLOM HOLOM NJAO HOLON LAN H9IH L Y LSOWH3HL WHY lV HOLVOINI H3Nund JYNSSAUd SYD HOLIAS HOSN3S VE HOA3ANOO 3503 Jeu Y by 30 LW 417 93 1 ON 2 O os UINYOISNVUL JNIL INIL ISNI VE asnd VOL HOLON ISN 1044405 3JUNLVHIdNEL 2 193113 A18W3SSY 104 HOA3ANOO 1041405 HOA3ANCO VL 0 LINDHIO S HOLIOVdVO SNI1009 NJAO 1Y LSONH3HL ONITO09 1041409 LVLSONHIHL 1044402 H3NHR8 HINUNS HOLMS 3UNSSIUd UV HOUMS FJUNSSIUd UV NX Impinger 1000 Series Service Manual International 16 SCHEMATIC 1030 S N Q17171 amp ABOVE 0601 13GoN ZUVAHIS SNANGYONY 22018 SSN 1HJSNY 831 35 INN TI ILYA ZuYMH2S HAL 1 25 2780 9Nn1413H2538138v31 9 ONVALHOdSNY
57. LECTRICAL CONNECTOR FILTER FILTER COVER COVER PLATE PLATE ELECTRICAL CONNECTOR Impinger 1000 Series Service Manual International IGNITION CONTROL REPLACEMENT Remove control panel top and front cover Loosen two 2 locking screws on front cover of relay approx 1 2 turn Remove front portion of relay by pulling straight out rocking motion Remove wires from plug in terminal strip note wire numbers and locations Remove two 2 screws from mounting bracket and remove Reassemble in reverse order NOTE Plug in terminal strip is polarized and will only allow relay to plug in one direction make sure manual reset button lines up with access hole in front cover Check system operation en Ps D IO E HIGH LIMIT THERMOSTAT REPLACEMENT Remove control panel top and front cover Remove conveyor and fingers Remove capillary bulb from wire form in oven chamber and pull through tube into control box Remove two 2 wires from thermostat note wire numbers and location for reinstallation Remove screws from bracket and remove thermostat Reassemble in reverse order making sure capillary tube is placed securely in the wire form NOTE Depress reset button to insure thermostat is set for operation SD nd aa SPARK GENERATOR REPLACEMENT Remove control panel top and front cover Loosen two 2 locking screws approx 1 2 turn on ignition control and remove front portion of relay exposing terminal s
58. N3A 330 ONnu3HOIS bd dW31 1132 HOLVHHOJSNYYL 18X QNYS1HOdSNYHl 30104 EN WOS ONNYSHIIS EF 3913ZNY d431 1132 1 1 9NNL4N738 ONNTHNY 9313010 ZH 1VISOWUIHL 213 13 011 3109 dl 831301 N3430 H31340 1N310d 4371 0 3311933431 21 ONva430404 7081803 22 N330 iV1SOWH3Hl 21 LYLSOWYIHL JdWYTTOYLNON 1 0 4 S HOLVSJONONHOLOW 19 SNISIM IN3W313 9 11 3 258 1WLSOWYIHL li HOSNI3SYIKWNS SH UILHOVMNIONEOLINV 54 her N e B do i i TH 62 5 4 i x 5 0 2 L p L AEE AINA 6 8 2 tS 0 82 2 Ed Er MEET 2 1 22 28 19 Impinger 1000 Series Service Manual International SCHEMATIC 1033 1034 1046 1047 vEDL EEOL T3IAON JILVINAHOS NOI 193191 INO HOLIMS 39018 TYNIKWYIL TYYLNIN EE SE EE ii i Bun 44288815803 puogzsodsudu J0J0WJOJSUDU 611 022 dJolouJOjsuoJ 4721 991 3197 4030 4945494 Sun1aBauungouadua 11 11349 3 1 aquy 11l1u9A1011d pun JdNOH 96 due 1187 uiw OZ S 0184 4NOJUION Je1unj 23301 9 13 Jezue JBequni1ouedus xX0q11041u03 30150 194 S9u2s u0413913 JOJOUJO JSUDJJPUNZ u1uasbunuos unoJJo6 291301 491104254274 J0110u9S J8j 0uosyonag J4eijn JeuueJg 39310425 483 OYISYINUPSOG 42119426 J uu Jg 4271045
59. SE DUAL BELT POWER SUPPLY Electrical Power to be supplied to the Oven by a five conductor service Black conductor is Hot Red conductor is Hot Orange conductor is Hot White conductor is Dedicated Neutral Green conductor is Ground MAIN FAN CIRCUIT Electrical power is permanently supplied through 3 50A fuses to the normally open contacts of the Mercury Contactor Power is also supplied through 1 10A fuse to the normally open contact of the Main Fan Relay through a 1A Fuse to the normally open Double Pole Main Fan Switch and to the normally open Cool Down Thermostat thermostat closes at 160 F and opens at 140 F Closing the Main Fan Switch supplies 220 or 240 VAC to the primary of the control circuit Step Down Transformer The transformer steps the voltage down to 120 VAC for the control circuit 120 VAC is supplied to the coil of the Main Fan Relay The coil of the relay is energized the normally open contacts close energizing the Main Fan Motor Closing the Main Fan Switch also supplies power to the 12 6 VAC Transformer the Control Box Cooling Fan and the Heat and Conveyor Switches TRANSFORMER 12 6 Upon closure of the Fan Switch 120 VAC is supplied to the primary of the 12 6 VAC VAC Transformer The Transformer steps the voltage down to 12 6 VAC normally 13 to 14 VAC with a center tap and supplies power to the Time Temp Display The voltage from each leg of the Transformer s secondary to the center tap should be one half of t
60. SERVIGE MANUAL INTERNATIONAL IMPINGER CONVEYOR OVENS MODEL SERIES 1000 amp 1200 9 Lincoln Lincoln Foodservice Products LLC 1111 North Hadley Road Fort Wayne Indiana 46804 United States of America Phone 800 374 3004 U S Fax 888 790 8193 Int l Fax 260 436 0735 Technical Service Hot Line 800 678 9511 www lincolnfp com lt 7 S te SERVICE AND PARTS 1000serviceexp REV 1 5 07 TABLE OF CONTENTS TABLE OF es UIS Up suse 2 SEQUENCE OF OPERATIONS 1002 100 sesi eee aan ae Ub Seb tenetis tds 3 SEQUENCE OF 4 SEQUENCE OF OPERATIONS 1028 7 1029 1228 7 1229 lalate naka ana ada ni 5 SEQUENCE OF OPERATIONS ude 6 SEQUENCE OF OPERTIONS 082 ve 7 SEQUENCE OF OPERATIONS 1033 1034 1046 1047 8 SEQUENCE OF OPERATIONS 1042 1043 1242 1243 sss 10 SCHEMANG 1002 1008 Z cL 12 SCHEMATIC 1006 TO SERIAL NUMBERS Q14279 a 13 SCHEMATIC 1028 1029 S N 019071 amp 14 SCHEMATIC 1028 1029 S N Q19078 amp 15 SCHEMATIC 1030 banens 16 SCHEMATIC 1030 S N 017171 amp
61. Switch and to the normally open Cool Down Thermostat thermostat closes at 160 F and opens at 140 F Closing the Main Fan Switch supplies 220VAC to the primary of the control circuit Step Down Transformer The transformer steps the voltage down to 120 VAC for the control circuit 120 VAC is supplied to the coil of the Main Fan Relay The coil of the relay is energized the normally open contacts close energizing the Main Fan Motor Closing the Main Fan Switch also supplies power to the 12 6 VAC Transformer the Control Box Cooling Impinger 1000 Series Service Manual International TRANSFORMER 12 6 VAC HEAT CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE S N 4390 AND UP TIME TEMP DISPLAY Fan and the Heat and Conveyor Switches Upon closure of the Fan Switch 120 VAC is supplied to the primary of the 12 6 VAC Transformer The Transformer steps the voltage down to 12 6 VAC normally 13 to 14 VAC with a center tap and supplies power to the Time Temp Display The voltage from each leg of the Transformer s secondary to the center tap should be one half of the secondary voltage Closing the Fan Switch and the normally open Heat Switch supplies 120 VAC through the normally open Air Pressure Switch and the normally closed Hi Limit Thermostat manually re settable opens at 368 C through the 3A Fuse to the Temperature Control Board the coil of the Mercury Contactor and to the Heat Indicator Light When the Heat Switch
62. Switch Check for 120 VAC on both sides of switch If voltage present on one side only check for air tube blockage adjust air switch If above fails replace air pressure switch Hi Limit Thermostat Terminals are normally closed If open reset and test oven for proper operation If thermostat will not hold for maximum oven temperature and oven is not exceeding temperature dial setting replace thermostat rated at 190 F Hi Limit Thermostat Terminals are normally closed If open reset and Model 1032 test oven for proper operation If thermostat will not hold for maximum oven temperature and oven is not exceeding temperature dial setting Replace the thermostat Check for proper location of sensing bulb in its spring holder If hi limit is still tripping replace rated for 368 C 3 Amp Temperature Control Check and or Replace Fuse Fuseholder Check and or replace No Main Fan Cool Down Impinger 1000 Series Service Manual International 39 Temperature Control Board Temperature Control Potentiometer Thermocouple Probe Mercury Contactor s 50 Amp Fuses Heater Elements Oven heats with switch Mercury Contactor s Conveyor will not run S N 100 4389 D C Motor Control Board 40 Voltage Supply 3 mee Fuse Check for 120 VAC input to temperature control board If not present check wiring from fuse holder to temperature control board Turn the temperature ad
63. T 1 Remove control panel top and front cover 2 Remove cover from relay box 3 Slide thermocouple out of oven chamber NOTE Remove conveyor and bottom fingers to aid in removal and installation of thermocouple 4 Remove two 2 wires from temperature control board Make note of wire numbers or color and location for reinstallation 5 Reassemble in reverse order making sure the metal end on the thermocouple is securely in the wire form in the oven chamber THERMOCOUPLE MEASUREMENT CHART EXPLANATION The junction temperature is the ambient air temperature where the thermocouple fastens to the electronic temperature control board 259 250 300 325 350 500 550 847 349 500 653 729 8 06 960 10 7 1114 12 69 14 23 1576 355 506 659 735 812 9 66 1043 11 20 12 74 1428 1582 78 76 75 747 72 70 68 395 546 899 775 852 10 06 10 83 11 81 13 15 1469 16 28 64 5 63 8 69 HEATING ELEMENT Shut off power at main breaker Remove rear motor cover Disconnect heater element wire and mark for reassembly Remove oven back assembly NOTE For ovens SN 4768 and above remove fan shroud Remove two 2 mounting screws and remove heating element Reassemble in reverse order Ree oon If the leads are not attached in this manner a loose connection may result causing arcing and lead wire burn off Impinger 1000 Series Service Manual International
64. TOR REPLACEMENT STEPPER 1000 SERIES SN14975 AND ABOVE 1200 SERIES SN14792 AND ABOVE Sm Dore ONE Shut off power at main breaker Remove control panel top and front cover Remove the chain guard Remove the conveyor drive chain from the motor sprocket Remove the sprocket from the conveyor motor shaft by loosening the set screw and sliding the sprocket off the shaft Unplug the wire harness for the motor Unplug the wire harness for the hall effect sensor mounted on motor from the conveyor speed control Remove the four 4 mounting bolts and washers Reassemble in reverse order and calibrate the control board See Stepper Control Adjustment NOTE New drive motors will come as an assembly with Magnet and Hall Effect Sensor The magnet and sensor will also be available as a replaceable spare part When replacing the magnet be sure to clean shaft and locate new magnet up against the shoulder on the shaft COUPLING AND ENCODER DISC OD OR Ns M 10 Shut off power at main breaker Remove conveyor motor assembly Remove dust cover above motor Loosen both allen set screws 050 inch allen wrench located on coupling hub Remove 3 screws from tach bracket loosen the 4th Remove encoder assembly see optical encoder assembly in following procedure Pushing coupling down on motor shaft Swivel tach bracket aside and remove coupling To install push coupling on to motor shaft The encoder disc must be nearest m
65. VAC is supplied to the primary of the 12 6 VAC Transformer The Transformer steps the voltage down to 12 6 VAC normally 13 to 14 VAC with a center tap and supplies power to the Time Temp Display The voltage from each leg of the Transformer s secondary to the center tap should be one half of the secondary voltage Closing the Fan Switch and the normally open Burner Switch supplies 120 VAC through the Air Pressure Switch to the Temperature Control Board the normally open contacts of the Burner Motor Relay Burner Motor Relay discontinued after S N 14791 and the primary of the 24 VAC Transformer The transformer s secondary supplies 24 VAC to the burner motor relay coil the normally open contacts close within 30 seconds and the normally open Centrifugal Switch When the relay contacts close the Burner Blower Motor is energized As this motor reaches approx 1 600 R P M its internal centrifugal switch closes supplying 24 VAC to the Gas Control Valve When the Gas Control Valve is supplied with 24 VAC the pilot valve is energized and the igniter circuit is energized Ignition should now occur After pilot flame is proven the Main Gas Valve is energized The Burner Indicator Light is also energized Closing the Fan Switch and Burner Switch supplies 120 VAC to the Temperature Control Board The 1K or 1000 ohm Temperature Potentiometer is adjusted to desired temperature The Thermocouple will provide varying millivolts to the Temperature Controlle
66. VIGG 89 AVTdSIG d L aWLL UL YINYUNE HOLON HOLIOVYdVO HOLSIWHSHL HL HOLOM EW LY1SOWH3HL 218 H3ISWOHOV1 1 ONTIOOD HOLOW ZW KOG 10H1NOO LVYLSONHIHL 1W9n4dlH1N32 018 UINUNE HOLIMS NV NJAO HOLON LW OHLNOO 28 13S 3WLL HOLIMS vs HOLVOIONI H3NHnH 1 HO LUAS 553 HIV ZSdY HILIMS S HOSN3S 3NY3 4 HOLIMS 34155344 HIV N OE X2v18 bd gt 3LIHM aay 64 54 gs zs F 13 Impinger 1000 Series Service Manual International SCHEMATIC 1028 1029 S N Q19071 amp BELOW 62018201 SISGOW OVA 021 UIMOd UINHOSISNYYL ZUX 19 JVA 9 21 L L UINHOSSNVUL HX ina RUE NEN i H30OON3 TVDUdO 30 VI UAMHOISNVUL ISNA Zd ATENASSY LOd JYNLYYIANIL dl ANG LER LEO a NYA ONNOCO HOLOM JOHLNOO INOULOTTA 043 21 SOLO HILINOHOVL 1 LAMH LVISOMUSHL 1411 A18W3SSV 104 HOA3ANOO 1393 HOLIMS 18 1N3W313 ONLLVAH HLH VLO UINVIYE LINOL 80 NING oe vos UILVIH 2504 614 61 12 HOAIANOO HOLIMS ZS VE TOHLNOO 35141 94 ONI1000 NJAO LVLSONHIKL 119 NJAO HOLIMS S ve HOAZANOO 3604 64
67. YL YOLYWHOISNVYL EUX 11 022 801 8035 ZYX 9 21 431 1132 YOLYNYOJSNYUL LUK 111N3A101I d ONN LdNYH 9 0139388901 834831 LIN TILNJASLI3BYV 3913ZNY dW31 1132 1 1 dM31 4ILINOIINILOd 391 IZNVHNLVYIdNIL 31 4 YITMNIUNLYYIdNIL U32N349385n1Y43dN31 1V1S0HU3HL XO813041NOX 1VISONHIHL S3HOSINOM13313 03 81 ONNZ SdONNSONN 1393 YLNISSMYOLS 9 431301 YILTVHISNINGE UIL THIS WINNING 53 1 26 431 TYHISJINHOSVI 8311 26 ONYGLYOdSNYUL UILTVHIS U3NN3UB H311YH2S YOLVTILN3A N340 431 1YH9S 4 CA LA 831301 N330 17135 14 531530 T93NN398 rH ONV LYOdSNYYL YOLOW 9 130130 YILINI 41 831301 N330 HL W 21 U3NN3U8 3IdWWTTOHLNON 1 EL YOSNSSYSWHNS SH 21 360 05 35 NIMVTI 53 ONVELHOdSNYHL SNNYBHIIS 63 9S VE YINNIUG SNNUBHIIS 23 s 831301 IMUIHIIS 14 9S LVLSOWYJH XINOHLX313 213 ss ONVGLHOJSNYHL 5313901143494 42 5 831938 ONVELYODSNVYL 22 ES 574 YOLVSNIGNON 12 25 431934 8 338 08 IS WMYW Y ar seh HELEN 5 2 12 8 22 324240 z 2260 000 B T TECEN 3 OLO OXE GHSEX Xd 200800680080 7972 OSEE NOG LL 15 17 Impinger 1000 Series Service Manual International SCHEMATIC 1032 S N Q19077 amp BELOW 2801 1300MW OVA 021
68. ading should be 5 K ohms 5 as the pot is rotated from low to high Place the meter leads on the red lead P3 and on the white lead P2 Rotating the pot slowly from low to high the meter reading should show an even transition from 0 to 5 K ohms 5 There should be no dead or open spots through out the 10 turns of the pot Check all three leads to ground There should be no continuity to ground If any of the above checks fail replace the pot DC Motor Control Board Check for 120 VAC input to the control board at terminals L1 and L2 If not present check the conveyor switch and wiring back to 3 amp fuse and then back to power source if necessary If 120 VAC is present at L1 and L2 check the VDC output at terminals A and A If a DC voltage is not present check the 4 amp and the 1 amp fuses on the control board If 120 VAC is present at terminals L1 and L2 but DC voltage is not present at A and A providing the 1 amp and 4 amp fuses are good replace the board If DC voltage is present at A and A but motor does not run check gear motor as follows Conveyor Gear Motor If DC voltage is present at A and A and the motor does not run first check the mini breaker and then the conveyor Refer to the next possible cause Check the leads to the motor for evidence of any shorts or opens and each lead to ground If the motor fails the above tests replace motor Remove dust cover from the top of the motor and rotate motor shaft to
69. age to 120 VAG Oven fan will not run If main fan will not run the secondary of this transformer must be checked for 120 VAG output Check specific oven model schematic for circuit location Oven Start Relay Check for 120 VAC to the relay coil If voltage is not present trace wiring back to the fan switch If voltage is present check to insure contacts are closing 20 Minute Time Delay Check for 120 VAC at terminal 1 to neutral on the 20 minute timer If no voltage is present trace wiring back to the power supply If voltage is present at terminal 1 check for 120 VAC at terminal 2 to neutral If no voltage is present and the oven start relay is closed replace the 20 minute timer Oven Fan Relay Check for 120 VAC to coil of the oven fan relay If no voltage is present trace wiring back to terminal 2 of the 20 minute timer Check for 120 VAC at terminals 2 and 6 of the relay if no voltage is present trace wiring back to the power supply If voltage is present at the relay coil check to insure the contacts are closing Fan Fuse Check replace if necessary Fuseholder Check replace if necessary Check for opens shorts or grounds Motor Check for opens shorts or grounds WITH POWER OFF turn the fan blade to check for locked rotor 20 Minute Time Delay Check for 120 VAC at terminal 2 to neutral while oven is on Turn off the main fan switch 120 VAC should continue to be present for 20 minutes If voltage is n
70. all the adapter fitting and manometer Turn on electric power and gas and start up oven With oven at full fire manifold pressure should be 3 5 W C NAT 10 W C LP Turn off electric power and gas replace cover screw remove manometer and adapter replace pressure tap plug Check pressure tap for gas leaks before closing panel Close control panel and check system operation TEMPERATURE CONTROL VALVE ROBERT SHAW DLR OE N Oo Ol eo IS Shut off power at main breaker Shut off gas supply Remove control panel top and front cover Remove gas control valve See Above Remove the two 2 3 8 x 16 nuts that hold main orifice bracket to the burner assembly Remove temperature control valve sensing bulb from oven cavity NOTE It may be necessary to remove conveyor and fingers from oven cavity Remove piping from old temperature control valve Reassemble in reverse order be sure the sensing bulb is properly placed in the oven cavity The sensing bulb is properly placed in the oven cavity when it is placed in the spring holder and positioned with the 5 1 2 of the bulb to the left of the spring holder NOTE The bypass screw should be adjusted all the way in SOLENOID VALVE Shut off power at main breaker Shut off gas supply Remove control panel top and front cover Remove gas control valve See GAS CONTROL VALVE Disconnect wires from solenoid valve Remove two 2 3 8 x 16 hex nuts that hold main orifice
71. ble Pole Fan Switch H _ 350224 lens Yellow gt gt y 9 J SEEPAGE104 LO TIT MAKE FROM 369067 po H 369075 FlameSenor 4 369100 PilotOrifioe tp 369535 7 5 Cooling Fan OO 3967 Air Switch Tube PP 36901522 Oven Conveyor Control Poi Olu gt 6 Impinger 1000 Series Service Manual International BLOW UP 1006 Impinger 1000 Series Service Manual International EE 87 PARTS 1028 1029 1032 LETTER P N DESCRIPTION 517 Fuseholder 369335 Fuse MDL Time Delay Amp o 2 369195 Fue 0 369304 Fuseholder for FNM1 Fuse 369013 S D 369248 Kn 369064 Conveyor Speed Control Dial Non digital Display Ovens 369158 10 Tooth Sprocket S N 4390 to 019077 1 369128 NeonPilotLight 125VAC 369113 Brush For369022 369114 Brush Cap For 369022 SSS 369115 BrushSpring For369022 369368 HiLimitThermostat Bulb amp Capillary 0 2369154 0 7 Amp Circuit Breaker P 369118 Power Terminal Block 369007 Temperature Sensing Switch 369902 Sensing Rod Kit R 369119 BOA Fuseholder 369008 Conveyor DC Control Board S N 4389 amp Below 369640 Control Stepper S N 91
72. bly and burner Pilot Tube Check for gas pressure at pilot tube Disconnect pilot tube at burner and connect manometer to pilot tube If no gas pressure is present check for blockage in pilot tube or pilot shut off valve If these are clear and there is gas supplied to the oven replace the ignition control and valve assembly pilot orifice for obstructions Replace as need Burner Ignitor Check the burner ignitor head for any obstructions also check for frayed or broken wire any type of For ovens with Johnson Controls Ignition Control For ovens with Honeywell Ignition control See Pg 28 damage to spark gap 100 in 2 5 m m If there is visible damage replace ignitor assembly Impinger 1000 Series Service Manual International 27 Pilot flame but no main Flame Sensor There should be a visible pilot flame at this time flame To check for proper flame sensor operation connect a digital multimeter capable of measuring D C microamperes in series between the flame sensor wire normally connected to terminal 4 and terminal 4 NOTE This is a current measurement and the meter must be connected in series This procedure is for checking the pilot flame only Remove main valve wire Red from terminal 3 on ignition control With a visible pilot flame the current readings should be as follows Johnson G 65 control 0 2 micro amp D C minimum Johnson G 60 control 0 7 micro amp D C minimum I
73. cket through center hole and install sensor half with one 1 screw Reinstall plug on conveyor control NEW STYLE Remove two 2 mounting screws and remove sensor from conveyor motor Reinstall in reverse order CUT HERE DISCARD D NEW STYLE OLD STYLE Impinger 1000 Series Service Manual International 71 TEMPERATURE GAUGE REPLACEMENT Shut off power at main breaker Remove control panel top Disconnect thermocouple from temperature gauge Remove two 2 mounting bolts and remove temperature gauge Reassemble in reverse order DP NVE THERMISTOR REPLACEMENT 1 Shut off power at main breaker 2 Remove control panel top 3 Slide thermistor probe out of oven chamber NOTE Remove conveyor and bottom fingers to aid in removal and instaliaticn of thermistor probe 4 Disconnect wires from back of digital display at terminal strip location 49 10 9 Reassemble in reverse order making sure the probe is placed securely in the wire form in the oven chamber 6 Reconnect to digital display and calibrate See Time Temperature Display Replacement and Calibration To test the thermistor probe refer to the following chart and instructions OVEN TEMPERATURE 300 350 F 500 F 550 OHMS Place test pyrometer thermocouple and preheat oven as specified under temperature calibration Disconnect the thermistor probe from terminals 9 and 10 and measure the resistance across the 2 yellow l
74. determine if there is a locked rotor or a locked gear box use care so encoder disc is not damaged Conveyor Check for any mechanical miss alignment or improper adjustment Also check for worn bearings The Installation and Operations Manual shows proper conveyor belt adjustment A conveyor belt that is over tightened will cause excessive bearing wear and sometimes irregular speed Conveyor speed Power Supply Check power supply at the DC control board for the varying or intermittent 120 VAC at board terminals L1 and L2 If voltage is not present check main circuit breakers 34 Impinger 1000 Series Service Manual International Tach generator and DC Motor With the power to the DC motor control board Control Board turned off remove the leads from terminals T1 and T2 Place the test leads of a digital meter on the tach leads turn power on and the meter reading should be approximately 30 to 35 VDG This reading should be steady within 0 2 to 0 3 VDG If this reading is not within 0 5 VDG place the test meter probes on terminals A and A The meter reading should be approximately 150 to 160 VDC and steady within approximately 2 VDC If the tach voltage is unsteady and the board output is steady check the coupling for loose set screws or any type of damage If the coupling checks good the tach is usually bad If the board voltage output is unsteady beyond limits then the board is probably bad Always check the speed
75. dip switches located on rear of Time Temp Display see drawing on page 73 should be set as below DISPLAY 1 2 3 4 5 6 7 8 9 10 SWITCH POSITION OFF ON OFF OFF ON ON OFF SWITCH 2 OFF FOR 60HZ ON FOR 50HZ SWITCH 3 OFF FOR F ON FOR C 3 With conveyor running set conveyor speed control so Time Temp Display indicates 5 00 minutes Place a pan on the conveyor measure STOPWATCH the time SPEED OF PAN of the leading edge in to leading edge out of oven Turn the speed adjustment pot on the rear of the Time Temp Display so display agrees with time measured by the stop watch See drawing on page 73 4 Turn conveyor speed control fully counterclockwise and adjust the stepper control maximum speed pot refer to drawing above so the display indicates 50 seconds Turn conveyor speed control fully clockwise and adjust the stepper control minimum speed pot so the display indicates 30 minutes NOTE Repeat 4 and 5 to be sure settings are accurate 6 Turn power off and set 1 dip switch to its ON OFF other position and verify that the conveyor reverses direction when power is applied Set conveyor travel direction as customer requests CAUTION ALWAYS REMOVE POWER BEFORE CHANGING CONVEYOR DIRECTION Impinger 1000 Series Service Manual International 69 REVERSING CONVEYOR DIRECTION SN 100 4389 BODINE Shut off power at main breaker Remove control panel top Turn reversing switch located on relay box to ob
76. e Check for 220 VAC supply to gas valve If no voltage present check reset button on ignition control check all connections for tightness If there is no voltage at gas valve replace ignition control If there is voltage present check for gas pressure at gas pressure tap located in gas piping If there is no gas pressure replace gas valve No Pilot If the ignition control is energized and the gas valve and ignitor circuits are energized visually check for pilot flame This may be done by opening the small inspection door on the end of the burner or by opening the main oven door and looking under the lower finger housings on the right side of the oven If no pilot flame is visible check the following Ignitor Sensor Assembly Pilot Tube Check for gas pressure at pilot tube Disconnect pilot tube at burner and connect manometer to pilot tube If no gas pressure is present check for blockage in pilot tube If these are clear and there is gas supplied to the oven replace the gas valve pilot orifice for obstructions Replace as needed Burner Ignitor Check the burner ignitor head for any obstructions also check for frayed or broken wire any type of damage to spark gap 100 in 2 5 there is visible damage replace ignitor assembly Pilot flame but burner Flame Sensor There should be a visible pilot flame at this time will not stay ignited To check for flame sensor operation connect a digital multimeter Capable of m
77. e switch remove snap on cover on the side of the switch to expose adjusting screw To increase sensitivity turn screw counter clockwise to decrease sensitivity turn screw clockwise Check for proper line voltage switching from N C to N O as the air pressure switch closes GAS VALVE REPLACEMENT AND ADJUSTMENTS Ae 76 Remove control panel top and front cover Disconnect the gas piping from the back of the unit Remove the four 4 screws from the incoming nipple mounting bracket Remove incoming nipple Disconnect two 2 plugs 1 3 prong and 1 4 prong Note location Disconnect pipe union just above gas valve and remove assembly Reassemble in reverse order check all pipe fittings for leaks After assembled check for proper adjustment of gas pressure switch 8 8 on dial for natural gas 23 for L P Gas and 4 5 for town gas Check and adjust manifold pressure Remove pressure tap located in gas piping above the gas valve prior to the burner orifice and install manometer Adjustment screw is located on the front of the valve remove plastic cap and adjust as needed 3 5 W C for Natural Gas and 10 W C for L P Check gas filter by removing cover plate located on either side of valve Remove four 4 screws and slide filter out of valve housing and inspect Reassemble in reverse order and check for leaks around cover SIDE VIEW TOP VIEW OUTPUT MANIFOLD 2 PRESSURE ADJUSTMENT ADJUSTMENT E
78. eads Refer to the above chart to determine if probe is producing the proper resistance EXAMPLE The probe resistance at 500 F 260 C should be 24 ohms TRANSFORMER TIME TEMP DISPLAY Shut off power at main breaker Remove control panel top Remove relay box cover Disconnect two 2 wires at base of transformer and three 3 wires at terminals 1 2 and 3 on Time Temp Display Remove two 2 mounting screws Reassemble in reverse order PM oon TIME TEMPERATURE DISPLAY REPLACEMENT amp CALIBRATION Shut off power at main breaker Remove control panel top Disconnect wires from rear of display Make note of wire numbers and location for reinstallation Remove four 4 screws from display bezel 2 top 2 bottom and remove display Install new display in reverse order Note dip switch position and calibrate display as follows a Check all wire connections to insure proper tightness b Check dip switch setting to insure proper positions for the model of oven Oa Pa po ROSER 72 Impinger I 1000 Series Service Manual International ALL 1000 amp 1200 SERIES OVENS SWITCH SETTINGS 1 2 3 4 5 6 7 8 9 TYPE I OFF OFF ON ON ON OFF TYPE II OFF OFF OFF ON ON ON TYPE III OFF OFF ON OFF ON ON ON OFF Baldor Motor TYPE Ill OFF OFF ON OFF OFF ON ON OFF Stepper Motor TYPE IV OFF OFF oe ON OFF ON ON ON OFF Baldor Motor TYPE IV OFF OFF oe ON OFF OFF ON ON OFF Stepper Motor These swi
79. easure the resistance of the thermistor probe See chart on page 72 for proper resistance readings Inspect the thermistor bulb for its proper location in its spring holder Check for shorts in leads where they enter the sensor bulb Also check each thermistor lead for short to ground Impinger 1000 Series Service Manual International Thermocouple Probe Place your pyrometer thermocouple into the center between fingers 2 and in the oven For ovens with Mechanical Measure D C millivolts at Thermostat terminals 9 and 10 on the time temp display See thermocouple chart on page 59 for proper readings Replace thermocouple if proper readings not achieved If readings are correct on the thermocouple replace time temp display Connect temperature meter to thermocouple at terminals 9 amp 10 on back of the time temp display Be sure to maintain proper polarity on thermocouple connections Compare actual oven temperature with the readings at the time temp display If the temperature readings match recalibrate or replace time temp display If the readings do not match replace thermocouple probe Erratic time temp If strange or unusual behavior is experienced such display as rolling of numbers lock up at a given number first check for a display circuit lock up This can be caused by a voltage spike or surge To eliminate this condition remove power from the time temp display by shutting off the main fan switch or
80. easuring D C microamperes between the flame sensor wire and the ignition control NOTE This is current measurement and the meter must be connected in series Proper current readings should be Honeywell 2 4 micro amp D C Landis amp Gyr 3 micro amp D C If these readings are not achieved replace ignitor sensor assembly Also check for any type of damage to flame sensor wire and connections Ignition Control If there is sufficient flame sensor current but the burner will not remain ignited check reset buttonon ignition control Indicator light is on but Gas Control Relay Check for 220 VAC to relay coil If no voltage is no main flame Model present trace wiring back to ignition control If 1046 1047 voltage is present check to insure contacts are closing 48 Impinger 1000 Series Service Manual International Temperature Control Thermocouple Probe Solenoid Valve Indicator light is on Temperature Control but no main flame 1033 1034 Thermocouple Probe Flame Monitor Relay Main Burner Valve Temperature Regulation Impinger 1000 Series Service Manual International Check for 120 VAC across L1 and L2 on temperature control board If no voltage is present retrace wiring back to power supply Turn the temperature adjustment knob to the maximum temperature position and check for 120 VAC at the load terminal to neutral If 120 VAC is not present proceed as follows If 120 VAC is
81. ed to the coupling and not warped Check the positioning of the optical encoder disc The disc should not be touching the optical encoder assembly and the encoder assembly should be mounted so it is squarely facing the coupling shaft This is to allow the infrared beams to be broken by the encoder disc If all this is okay then replace the optical encoder assembly Perform all checks as in the above evaluation If the time check is okay refer to the next section Check to see if the conveyor drive stepper motor is running If motor is not running refer to Conveyor will not run on page 43 Check to insure that the magnet cemented to shaft of conveyor drive stepper motor has not been damaged or come loose from motor shaft Replace as needed Check for any physical damage to Hall Effect sensor mounted on conveyor drive stepper motor Check all wiring and connections for damage Check all connections for tightness or proper location and check all wiring for visible damage Replace as needed If there is still no time display wire in temporarily a new conveyor drive control If there is still no time display reconnect original conveyor drive control Replace Hall Effect Sensor 45 TROUBLESHOOTING GAS OVENS 1033 1034 1046 1047 Incoming Power Supply Check breaker reset if required Call Power Company if needed In these ovens there is a control circuit step down transformer This transformer steps down supply volt
82. emove top two 2 mounting screws and remove control board NOTE Exchange boards on the mounting bracket before reinstallation Reassemble in reverse order and calibrate See D C Motor Control Board Calibration SN 14975 AND ABOVE 1000 SERIES GAS OVENS SN 14792 AND ABOVE 1200 SERIES GAS OVENS Make note of wire numbers and location before removing them from the control board The bottom mounting screw need only be loosened as the mounting bracket for the control board is slotted Remove top two 2 mounting screws and remove control board Reassemble in reverse order and calibrate See Stepper Control Adjustment D C MOTOR CONTROL BOARD CALIBRATION SN 100 to 4389 BODINE SYSTEM 1 2 3 Remove control panel top and front cover Remove cover from relay box Identify D C control board and calibrate as per the following instructions NOTE THE USE OF A DIGITAL VOLTMETER IS NECESSARY FOR PROPER ADJUSTMENT Check incoming AG voltage at L1 and L2 Should be 120 VAC 10 Check field voltage at terminals F1 and F2 Should be 100 VDC 10 volts Turn speed control dial clockwise to its maximum speed position PLAGE DIGITAL VOLTMETER LEADS ON terminal S1 and S2 adjust the max pot for a reading of 3 4 VDC Place METER LEADS on terminals A1 and A2 Adjust the reg pot for a reading of 125 VDC NOTE In some instances when the input AC voltage runs on the high side of the normal input range you may have difficulty adjusting the ma
83. eplace covers and check system operation BURNER LIGHT 24 VAC GAS OVENS OO eS Shut off power at main breaker Remove control panel top and front panel Remove access cover Remove two wires from burner light note number and location Grasp body of light assembly and slide sideways to remove Reassemble in reverse order and check HEAT LIGHT 125 VAC ELECTRIC OVENS GITE OI Shut off power at main breaker Remove control panel top and front panel Remove two 2 wires from heat light note number and location Grasp body of light assembly and slide sideways to remove Heassemble in reverse order and check THERMOSTAT HI LIMIT ELECTRIC OVENS ot Tue Shut off power at main breaker Remove control panel top and front cover Remove the two 2 wires from the thermostat located on the back wall of the control box Remove two 2 mounting screws Reassemble in reverse order NOTE Be sure to press red reset button on new thermostat to ensure that it is in the closed position PILOT ORIFICE BURNER Lu e e Shut off power at main breaker Shut off gas supply Remove burner assembly see Burner Assembly Remove pilot line from pilot orifice Remove pilot orifice from burner igniter Impinger 1000 Series Service Manual International 6 Reassemble in reverse order MAIN ORIFICE BURNER 1 Shut off power at main breaker 2 Shut off gas supply 3 Unbolt temperature control valve assemb
84. er Blower Motor Check for 120 VAC supply to burner blower motor WITH POWER OFF turn blower wheel to check for locked rotor If 120 VAC is present and motor does not run replace motor Burner Blower Motor Air Check for 220 VAC switching to pin N O as the Pressure Switch air pressure switch closes Connect a temporary jumper wire for testing purposes only from pin to pin N O on ignition control to bypass air switch NOTE For Honeywell control only Check for air tube blockage or misalignment adjust air pressure switch If the above fails replace air pressure switch Spark Generator After a pre purge time of 30 to 60 seconds after blower motor starts check for 220 VAC to spark generator If voltage is not present check reset button on ignition control If voltage is still not present replace ignition control f voltage is present visually check for spark at ignitor head to gas valve Impinger 1000 Series Service Manual International Ignitor Sensor Assembly Check for visible damage to ignitor sensor assembly If there is no visible damage to the components and no spark replace the spark generator If there is visible damage to the Ignitor sensor assembly replace it Also check for frayed or damaged wires in burner tube Gas Valve Check for 220 VAC supply to gas valve If no voltage present check reset button on ignition control check all connections for tightness If there still is no voltage at gas
85. eyor frame 3 Remove bearing retaining clips from ends of drive shaft 4 Slide bearing off drive shaft 5 Reassemble reverse order IDLER END 4 Remove idler shaft from end of conveyor frame Slide bearing off idler shaft 6 Reassemble in reverse order 70 Impinger 1000 Series Service Manual International BEARING CONVEYOR SN 2164 AND ABOVE 1 Remove conveyor from oven and place on a flat work surface 2 Remove connecting links from conveyor belting See Installation and Operating Instructions Manual 3 Remove conveyor belting from conveyor DRIVE END 4 Remove drive sprocket from drive shaft D Remove two 2 allen head bolts 6 Remove drive shaft and bearing assembly from conveyor frame 7 Reassemble reverse order IDLER END 4 Remove idler shaft bearing mounting plate assembly from conveyor frame 9 Remove bearing mounting plate assembly from conveyor 6 Hemove bearing from mounting plate T Reassemble in reverse order TRANSFORMER STEPPER MOTOR CONTROL Shut off power at main breaker Remove control panel top and front cover Disconnect transformer wire harness Remove two 2 mounting screws Reassemble in reverse order WI eu HALL EFFECT SENSOR REPLACEMENT NOTE There are two 2 styles of hall effect sensors See Drawing OLD STYLE Remove two 2 screws from conveyor drive motor and break away hall effect sensor from motor shaft To install new sensor cut sensor bra
86. f these values are not achieved replace flame sensor Also check for any type of damage to flame sensor wire and connections Ignition Control and Valve If there is a pilot flame and there is sufficient micro Assembly amp current at terminal 44 check for 24 VAC that the main valve internal to valve assembly has opened Connect a manometer to the manifold gas pressure tap located on the back side of the ignition control and valve assembly If no gas is present replace ignition control and valve assembly Centrifugal Switch of Burner Check for 24 VAC output from secondary of Blower Motor transformer If voltage is present check for 24 VAC at terminals marked 24V and 24V gnd on Ignition Control If the Burner Blower Motor is running and there is no voltage at terminals 24V and 24V gnd on the ignition control replace the Burner Blower Motor These Ignition Controls have a 30 second pre purge Delay and a 15 second lock out time The Ignition Control will try for ignition for 15 seconds and then shut off To Re try for ignition turn off burner switch wait 30 seconds and re try ignition Ignition Control Check for 24 VAC supply to ignition control at terminals 24V and 24V gnd If voltage is No Pilot Pilot Shut off Valve For ovens with Honeywell ignition control present check for 24V at terminal P V Pilot Valve and If voltage is not present replace Ignition Control If the pilot valve is energized check to
87. fan switch supplies 220 VAC through a 3 AMP Fuse to the primary of the Power Transformer the transformer steps the voltage down to 120 VAC for the control circuit 120 VAC is supplied to the Cooling Fan the normally open Conveyor Switch the Electronic Temperature Control and to the coil of the Impinger 1000 Series Service Manual International TRANSFORMER 12 6V AC BURNER CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE TIME TEMP DISPLAY Impinger 1000 Series Service Manual International oven start and cool down relay Its normally open contacts close supplying 220 VAC to the Burner Switch and enabling the 20 minute Time Delay module The 20 minute Time Delay module supplies 120 VAC to the oven fan motor relay these normally open contacts now close supplying 220 VAC to the Oven Fan Motor Upon closure of the Fan Switch 120 VAC is supplied to the primary of the 12 6 VAC Transformer The Transformer steps the voltage down to 12 6 VAC normally 13 to 14 VAG with a center tap and supplies power to the Time Temp Display The voltage from each leg of the Transformer s secondary to the center tap should be one half of the secondary voltage Closing the normally open burner switch supplies 220 VAC through the oven air pressure switch the gas inlet pressure switch the normally closed high limit thermostat opens at 368 C to the ignition control The combustion motor is now energized The normally open burner blowe
88. fle Inlet and Outlet 36980010 ThumbScew 00000 RH 369369 Seam Cover Conveyor Opening gt Z S 369203 X StdWigHead 4 T 369749 Chain Cover Assy S N Q14974 8 Above Cs U 3904 Split Ring Retainer S V 369373 Receptacle Snap In W K369205 Chain Guard Cover S N 2164 to 014973 X 369651 Top Chain Guard S N 2164 to 014973 4 369879 Bottom Chain Guard S N 2164 to 014973 DD 3698218 IntemalCrumbPan 4 FF Columnating Plates See Installation Manual Label Time Temp Display Cover Instrument Cover lt Xx S lt c H 0 369887 nstrument Cover Label 369886 369199 369246 Display Bezel 80 Impinger I 1000 Series Service Manual International BLOW UP 1000 1200 GENERAL Impinger 1000 Series Service Manual International 81 PARTS MODEL 1002 1003 S N 2584 TO 4389 LETTER P N DESCRIPTION A 36914 BushCap 369115 BrushSpring 369543 9 Transformer 230 460 575 VAC 5 AA C 369073 Pilot Orifice NaturalGas 4 369100 Pilot Orifice tp DD 236900 Temperature Sensing Switch 369902 Sensing Rod Kit gt gt 82 Impinger I 1000 Series Service Manual International BLOW 1002 1003 S N 2584 TO 4389 A EN 5 5 7 u 8
89. he infra red light beam of the optical switch mounted on gear Series See Page 9 motor producing electrical pulses that are transmitted to the display The display converts these pulses into a read out of minutes and seconds The temperature portion of the display uses a Thermistor Probe to sense oven temperature The thermistor outputs a resistance proportional to the oven temperature This resistance is then converted by the display into a temperature reading The 1200 Series Ovens use a Double Pole Double Throw Switch to connect the two Optical Encoder Assemblies to the Time Temp Display By activating the switch either the front or rear belt soeed can be shown by the Time Temp Display SEQUENCE OF OPERATIONS 1030 MODEL 1030 220 VAC 50HZ 1 PHASE POWER SUPPLY Electrical Power to be supplied to the Oven by a three conductor service Black conductor is Hot Red conductor is Neutra Green conductor is Ground CONTROL BOX When the temperature in the Control Box reaches 120 F 3 the Cooling Fan AUTO COOL DOWN Thermostat will switch power to the Control Box Cooling Fan The Thermostat will interrupt power to the Cooling Fan when the Control Box temperature falls to 100 F 9 MAIN FAN CIRCUIT Electrical power is permanently supplied to the normally open contacts of the Double Pole Main Fan Relay the Cooling Fan Thermostat the normally open Main Fan Switch and the normally open Cool Down Thermostat thermostat closes at 160 F and o
90. he secondary voltage HEAT CIRCUIT Closing the Fan Switch and the normally open Heat Switch supplies 120 VAC through the normally open Air Pressure Switch and the normally closed Hi Limit Thermostat manually re settable opens at 190 F and the 3A Fuse to the L1 terminal of the Temperature Control Board the coil of the Mercury Contactor and to the Heat Indicator Light TEMPERATURE When the Heat Switch is closed 120 VAC is supplied to the Temperature Control CONTROL The Temperature Control Potentiometer 2 5K ohm is adjusted to desired temperature The Thermocouple will provide varying millivolts to the Temperature Controller The Temperature Controller switches the L 2 line of the Contactor coils at intermittent intervals to maintain desired temperatures Impinger 1000 Series Service Manual International 5 CONVEYOR DRIVE Closing the Fan Switch and the normally open Conveyor Switch supplies 120 VAC S N 100 to 4389 through a 3A Fuse to the Motor Control Board AC volts are converted to D C volts and are supplied to the Conveyor Motor at board terminals A1 and A2 through a D P D T Reversing Switch Adjustment of the Speed Control Potentiometer 500 ohm 10 turn will change resistance at terminals 51 S2 and S3 varying the D C voltage to the Conveyor Motor The speed of the Conveyor Motor will increase or decrease as the D C voltage from the Motor Control Board increases or decreases respectively S N 4390 and UP Closi
91. hms reading if potentiometer is defective replace If the potentiometer checks OK and there is no output at terminals A1 and A2 replace the D C control board Reversing Switch If there is D C voltage output from the motor control board but the conveyor drive motor is not running check the D P D T reversing switch Conveyor Drive Motor Check the conveyor drive sprocket for tightness Disconnect the motor check the red and black motor leads for opens shorts or grounds Check the brushes for excessive or abnormal wear Replace as needed Reconnect motor Test for operation If motor does not run replace Voltage Supply Check incoming voltage supply at line 1 to neutral There should be a voltage reading of 120 VAG If no present check breakers 3 Amp Fuse This conveyor fuse is located on the front panel Replace if defective NOTE Dual Belt Ovens Dual belt ovens utilize 2 complete independent conveyor drive systems The trouble shooting procedures are the same as single belt ovens except that the dual belt ovens use one each of the following one D C control board and one D C control board Speed Adjustment This is a 0 to 5 K ohm 10 turn potentiometer With Potentiometer power off remove the red black and white pot leads from the motor control board at terminals P1 P2 and P3 With a digital multimeter check the ohm reading across the red lead P3 to the black lead P1 This reading should be 5 K ohms
92. if display stays on older models circuit breaker interruption may be required This should eliminate the problem If the problem continues jumper the two fuses in the red wires leading from the 12 6 VAC transformer to the display If this does not solve the problem it may be coming in through the commercial power lines Suggest that customer contact his power company for evaluation For ovens with Electronic Thermostat Temp Display Perform the power supply check the thermistor inaccurate erratic or probe check and then perform the time temp inoperative simulator test Refer to page 72 for instructions Remember when using the time temp simulator remove all the leads from the back of the display except the 3 power leads After completion of this test and if reinstalling back into the oven the dip switches must be reset for oven operation Perform all checks as in the above evaluation If the time check is okay refer to the next section optical encoder Time display inaccurate erratic or inoperative S N Q4615 Q14970 1000 Series S N Q4615 Q14790 1200 Series Optical Encoder The above time temp test should have already been performed Remove dust cover from the gearmotor and inspect the coupling and encoder disc The coupling set screws should be tight and not slipping on the motor shaft or the tach generator shaft The encoder disc should be firmly attached to the coupling and not warped Check the positioning of
93. ire supplied Connect orange spark lead from burner to terminal marked spark on ignition control NOTE It may be necessary to replace ignition cable terminal with 250 quick connect terminal supplied Connect the red wire from burner blower motor centrifugal switch to terminal marked 24V on ignition control Connect green 68 wire supplied from terminal 24 GND to terminal GND burner to ground Connect the green wire from 24VAC transformer to wire 68 at terminal marked 24V GND on ignition control The Honeywell ignition control module provides 100 safety lockout Control will try for ignition for 15 seconds If ignition does not occur control will lockout or shut off To reset control the burner switch must be turned off for 1 minute s po 60 Impinger I 1000 Series Service Manual International 24V GND 24V WHITE FROM PILOT LIGHT BUTT SPLICE AND NEW GREEN WIRE SUPPLIED IN KIT BLUE FROM VALVE BLACK FROM VALVE 3 RED FROM VALVE TO PILOT LIGHT WHITE FROM PILOT LIGHT 9 SPARK gt gt gt N BUTT SPLICE AND NEW O GREEN WIRE SUPPLIED TO PILOT LIGHT A IN KIT RING TERMINAL END OF WIRE HARNESS SUPPLIED IN KIT BLUE FROM gg 3 RED FROM VALVE BLACK FROM VALVE CABLE FROM BLOWER CENTRIFUGAL SWITCH IGNITOR SENSOR 24V FROM TRANSFORMER INSULATED MALE TAB CONNECTOR FLAME SENSOR Shut off power at main breaker Remove control pane
94. justment dial to the maximum temperature position Check for 120 VAC at coil of mercury contactor s Next short the leads of thermocouple on the temperature control board check for 120 VAC at coil of mercury contactor s If voltage is not present replace temperature control board If voltage is present proceed Potentiometer is 0 to 2 5K ohm WITH POWER OFF remove the leads from the temperature control board terminals 1 2 and 3 and measure ohms from black to white leads The ohm reading should be 0 to approximately 2 5K ohms as the dial Remove thermocouple leads from the temperature control board and measure the millivolt output of the leads Refer to chart in adjustment section for proper millivolt readings Check for 120 VAC to the contactor coil If voltage is present and contactor will not activate replace the contactor s Also check each contactor for proper high voltage input and output If there is no high voltage input to the mercury contactor s check the 50 amp fuses and replace if necessary Check the Amp draw on each hot leg for proper load Check the specifications plate for rating information If the Amp draw is low or high check the individual elements for opens shorts and proper resistance To check resistance of the elements turn off the power Remove all leads from the elements and use an accurate digital VOM The element resistance should be as follows 208V 9 8 ohms approx 220V 10 5 ohms approx 24
95. l top and front cover Remove burner assembly see burner assembly Disconnect one 1 wire from flame sensor Remove flame sensor by removing one 1 mounting nut Reassemble in reverse order NOTE Be sure flame sensor is not bent or touching any other burner parts Impinger 1000 Series Service Manual International 61 OAS ODE BURNER IGNITOR QUUD RONDE Shut off power at main breaker Remove control panel top and front cover Remove burner assembly Remove flame sensor Remove pilot shield and pilot shield extension Remove burner igniter Reassemble in reverse order NOTE Be sure to reconnect burner igniter cable to ignition control TRANSFORMER 120 24 VAC D o gt c NI Remove control panel top and front cover Remove control box cover from burner blower motor NOTE The complete burner blower motor assembly with control box PN 369359 is no longer available The blower motor assembly PN 369265 has been changed to a burner motor kit PN 369366 If the burner blower motor or 24V transformer PN 369531 are replaced the following modifications must be made Shut off power at main breaker Remove control box and components from burner blower motor Mount transformer on air switch bracket use transformer as template Discard control box and relay Material needed 29 drill bit and 8 x 3 8 self tapping screws 3 each see Burner blower motor section for wiring information R
96. lace as needed Hall Effect Sensor Check for any physical damage to Hall Effect Sensor mounted on conveyor drive stepper motor Check all wiring and connections for damage Conveyor Drive Check all connections for tightness or proper Stepper Control location and check all wiring for visible damage Replace as needed If there is still no time display wire in temporarily a new conveyor drive control If there is still no time display reconnect original conveyor drive control Replace Hall Effect Sensor 52 Impinger 1000 Series Service Manual International REMOVAL INSTALLATION amp ADJUSTMENTS MODEL SERIES 1000 amp 1200 CAUTION BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE IMPINGER OVEN BE SURE TO DISCONNECT ELECTRICAL POWER AND GAS SUPPLY MOTOR MAIN FAN 1 Shut off power at main breaker 2 Remove flue by taking out the two 2 mounting screws 3 Remove louvered motor cover from back of oven 4 Remove wireway by taking out the ten 10 hex head screws NOTE On Series 1200 ovens there are two 2 wireways to be removed and there is extra wire coiled in the control box to allow the wires to hang below the oven back for removal 5 Remove cooling fan if equipped 6 Remove junction box cover below motor and disconnect motor leads Make note of wire numbers and location for reinstallation 7 Remove the twelve 12 hex head bolts from the oven back and slide back straight out of the oven 8 Remove two
97. ll normally be 12 15 VAG Voltage across terminals 1 and 3 on the time temp display should read 12 15 VAC Terminals 1 2 and 2 3 should be 1 2 the voltage reading 1 to If the above secondary readings not achieved replace transformer If proper voltage is present at terminal 1 2 and 3 on time temp display but the display is not lighted recheck all connections for tightness If time temp display is still not operating replace the time temp display Place your pyrometer thermocouple into the center between finger 2 and in the oven Disconnect the yellow tipped thermistor leads from the time temp terminals 9 and 10 Measure the resistance of the thermistor probe See chart on page 72 for proper resistance readings Inspect the thermistor bulb for its proper location in its spring holder Check for short in leads where they enter the sensor bulb Also check each thermistor lead for short to ground Place your pyrometer thermocouple into the center between fingers T2 and T3 in the oven Connect temperature meter to thermocouple at terminals 9 amp 10 on back of the time temp display Be sure to maintain proper polarity on thermocouple connections Compare actual oven temperature with the reading at the time temp display If the temperature readings match recalibrate or replace time temp display If the readings do not match replace thermocouple probe If a strange or unusual behavior is experienced such as a ro
98. lling of numbers or lock up at a given number first check for a display circuit lock up This may be caused by a voltage spike or surge in the incoming power lines To eliminate this condition remove power from time temp display by shutting off the main fan switch for 15 seconds This should eliminate the problem If this does not solve the problem it may becoming in through the Commercial power lines Suggest that customer contact their power company for evaluation 51 Temp display Time Temp Display Perform the power supply check the thermistor inaccurate erratic or probe check and then perform the time temp inoperative simulator test Refer to page 72 for instructions Remember when using the time temp simulator remove all leads from the back of the time temp display except the 3 power leads After completion of the test and if re installing time temp display back in the oven the dip switches must be reset for oven operation and the time temp display must be recalibrated If readings are not achieved replace display inaccurate erratic or the time check is okay refer to the next section inoperative Conveyor Drive Check to see if the conveyor drive stepper motor Stepper Motor is running motor is not running refer to Conveyor will not run on page 50 Magnet Check to insure that the magnet cemented to shaft of conveyor drive stepper motor has not been damaged or come loose from motor shaft Rep
99. lve Remove four 4 phillips screws that secure the burner backing plate Remove burner assembly from housing the main and pilot orifice flame target pilot shield main and extension flame sensor and burner ignitor can now be changed or serviced as needed 9 Reassemble in reverse order NE NPR GAS CONTROL VALVE Shut off power at main breaker Shut off gas supply Remove control panel top and front cover Disconnect the gas piping from the back of the unit Remove the four 4 screws from the incoming nipple mounting bracket Remove incoming nipple Remove pilot tube assembly from control valve Disconnect pipe union just above control valve Disconnect wiring from control valve making note of wire numbers and location Reassemble in reverse order after assembly is complete be sure to check manifold pressure 3 5 W C NAT Gas 10 W C LP and adjust if necessary See Section MANIFOLD PRESSURE ADJUSTMENT NOTE Check all gas line fittings for leaks after installation MANIFOLD ADJUSTMENT SCREW LOCATED UNDER COVER SCREW MANIFOLD PRESSURE ADJUSTMENT CONNECTION PILOT LINE CONNECTION MANIFOLD ADJUSTMENT SCREW LOCATED UNDEI COVER SCREW TOP VIEW MANIFOLD PRESSURE ADJUSTMENT 1 Remove control panel top and front cover 2 WITH ELECTRIC POWER AND GAS OFF remove the outlet pressure tap plug from the gas Impinger 1000 Series Service Manual International 57 E control valve and inst
100. ly see Temperature Control Valve and carefully rotate to access main orifice bracket NOTE Be sure not to damage capillary tube 4 Remove main orifice from orifice bracket 5 Reassemble in reverse order 6 Check all gas fittings for leaks POTENTIOMETER CONVEYOR SPEED CONTROL Shut off power at main breaker Remove control panel top and front panel Remove conveyor speed control dial Remove mounting nut from pot shaft Remove pot from front panel Disconnect pot wiring from conveyor control board Remove pot assembly Reassemble in reverse order NPE DIAL CONVEYOR SPEED CONTROL NON DIGITAL DISPLAY OVENS Shut off power at main breakers Remove dial by loosening set screws Set new dial indicator to 000 in window and lock Turn speed control pot shaft to its minimum speed position Slide dial assembly onto pot shaft and tighten set screw Sa oo DIAL CONVEYOR SPEED CONTROL OVEN WITH DIGITAL DISPLAY Shut off power at main breaker Remove old dial by loosening set screw Remove shaft locking nut Install new shaft locking nut NOTE This is a friction type locking nut do not try to trim this nut to fit 5 Install new dial by sliding over pot shaft and tightening set screw RE CONVEYOR MOTOR REPLACEMENT BODINE SN 100 4389 Shut off power at main breaker Remove control panel top and front panel Remove the conveyor drive chain from the motor sprocket Remove chain guard Rem
101. lying 120 VAC to the primary of the 12 6 volt Transformer The secondary output of the transformer normally 13 to 14 VAC depending on input with a center tap is supplied to terminals 1 2 and 3 of the Time Temp Display The center tap is terminal 2 The display works on a balanced input and center tap voltage to each leg must be 1 2 the total reading The speed side of the Time Temp Display uses a slotted disc cemented to tach coupling to break the infra red light beam of the optical switch mounted on gear motor producing electrical pulses that are transmitted to the display The display converts these pulses into a read out of minutes and seconds The temperature portion of the display uses a Thermistor Probe to sense oven temperature The thermistor outputs a resistance proportional to the oven temperature This resistance is then converted by the display into a temperature reading SEQUENCE OF OPERTIONS 1032 MODEL 1032 380Y 220 VAC 50 HZ PHASE Electrical Power to be supplied to the Oven by a five conductor service Black conductor is Hot Red conductor is Hot Orange conductor is Hot White conductor is Dedicated Neutral Green conductor is Ground Electrical power is permanently supplied through 3 50A fuses to the normally open contacts of the Mercury Contactor Power is also supplied through one 10A fuse to the normally open contact of the Main Fan Relay through a 1A Fuse to the normally open Double Pole Main Fan
102. n 913 SdV uX eux ux EA LA dl HL 21 95 HINHNG HOLIMS HOA3ANOO HOLIMS NJAO HOLIMS HOLINDI 5 H3NHNS YOLON NJAO AV13U HIGODNA TYDLLdO HINUNG YOLON YOLON HOLOM HOLON HOLVOIGNI YANYUNE HOSN3S VE HOA3ANOO 3503 Vy H3AHOJSNYUL dA3 L 3AU 35141 VE H3MOd 3SNd VOL HOLON 3Sf4 JOULNOO IUNLYUIdNAIL OINOH109313 1 LOd HOA3ANOO HOA3ANOO VL O LINDHID 92 dOLIOYdYO LVLSOMYSHL 1 LVLSONUSIHL TOHLNOO H3NHf8 HOLIMS JUNSSIUd HIV 18 LT 21 Impinger 1000 Series Service Manual International SCHEMATIC 1042 1043 S N Q14280 amp ABOVE JAOSV 642710 HISWNN TVIHIS STSGOW AdAL J 05435 123443 TWH HINO HH HILING HOLINSI NUVIS YOSNIG WYA HINUNE HOLIAS VE HOAJANOI 3604 SHON HOAJANOI HOL AS VE UDOISNVEL M3MOd 3504 3003 W3HHOJGNYHL N3AO HOLIAS YO HOLOW 3503 71041403 MOAJANOO H3HMOJSNVH1 NJAO AVTIU 72041403 JINOWLIATS OVAPZ TOHLNOI UINSNE 3408 AMUNG 80108 AT MISSY 104 1
103. n when the Control Box temperature falls to 100 F 3 MAIN FAN CIRCUIT Electrical power is permanently supplied to the normally open contacts of the Double Pole Main Fan Relay the Cooling Fan Thermostat the normally open Double Pole Main Fan Switch and the normally open Cool Down Thermostat thermostat closes at 160 F and opens at140 F Closing the Main Fan Switch supplies 240 VAC through a 3A Fuse to the primary of the control circuit Step down Transformer The Transformer steps the voltage down to 120 VAC for the control circuit 120 VAC is supplied to the coil of the Double Pole Main Fan Relay The coil of the relay is energized The normally open contacts now close energizing the Main Fan Motor through one 10A Fuse Closing the Fan Switch also supplies power to the Cooling Fan Hour Meter hour meter discontinued after S N 3484 the 12 6 VAC Transformer the Burner and Conveyor Switches BURNER CIRCUIT Closing the Fan Switch and the normally open Burner Switch supplies 120 VAC through the Air Pressure Switch to the normally open contacts of the Burner Motor Relay and the primary of the 24 VAC Step Down Transformer The Transformer secondary supplies 24 VAC to the Relay Coil the normally open contacts close within 30 seconds and the normally open Centrifugal Switch When the Relay contacts close the Burner Blower Motor is energized As this motor reaches approximately 1600 R P M its internal centrifugal switch closes supplying 24 V
104. national TROUBLESHOOTING GUIDE 1000 amp 1200 SERIES ELECTRIC OVENS SYMPTOM POSSIBLE CAUSE EVALUATION Oven fan will not run Incoming Power Supply RETTET breakers Reset if required Call Power Co if needed Export Ovens For some export ovens there is a control circuit step down transformer This transformer steps down supply voltage to 120 VAG If main fan will NOTE not run the secondary of this transformer must be checked for 120 VAC output Check specific oven model schematic for circuit location Main Relay Check continuity to 120 VAC coil Check for power to the relay coil 120 VAC Check for 208 220 240 VAC to relay terminals Visually check for contact pull in OFF Turn Fan Blade to check for locked rotor Cool Down Thermostat Check cool down thermostat thermostat closes at 160 and opens at 140 Check for power 120 VAC at cool down thermostat With cool down thermostat pre heated check for continuity If switch is open replace No control box cooling Main Fan Relay Check for power to main fan relay Visually check for contact pull in Axial Cooling Fan WITH POWER OFF turn the fan blade to check for locked rotor Check for power 120 VAG to cooling fan If 120 VAC is present at the fan motor and the fan does not run replace fan assembly Oven will not heat Check if main oven fan is operating If not refer to Oven fan will not run switch on Replace if defective Air Pressure
105. ng the fan switch and the normally open Conveyor switch supplies 120 VAC to 1000 Series the Motor Control Board AC volts are converted to DC volts and are supplied to the S N 4390 to 14790 Conveyor Motor at terminals A and A Adjustment of the Speed Control 1200 Series Potentiometer 5 000 ohm 10 turn will change resistance at terminals P1 P2 and P3 varying the DC voltage to the motor The speed of the conveyor motor will increase or decrease as the DC voltage from the board increases or decreases S N 14791 amp Above respectively As the motor turns it drives both the reducer gearbox and the tach 1200 Series generator The tach generator is a DC voltage generator which supplies a voltage to See Page 9 the DC motor control board and is used as a reference for maintaining a constant conveyor speed TIME TEMP The Time Temp Display is energized when the Fan Switch is closed supplying 120 DISPLAY S N 4390 amp VAC to the primary of the 12 6 volt Transformer The secondary output of the Above1000 Series S N transformer normally 13 to 14 VAC depending on input with a center tap is 4390 147901200 Series supplied to terminals 1 2 and 3 of the Time Temp Display The center tap is terminal 2 The display works on a balanced input and center tap voltage to each leg must be 1 2 the total reading T T Display S N The speed side of the Time Temp Display uses a slotted disc cemented to tach Q14791 amp Above1200 coupling to break t
106. nit is not heating see Solenoid Valve Thermocouple Probe Remove thermocouple leads from the temperature control board and measure the millivolt output of these leads Refer to chart on page 59 for proper readings Temperature Control WITH POWER OFF remove the leads from the Potentiometer temperature control board and measure ohms from black and white leads The ohm reading should be 0 to 2 5K ohms as the dial is turned through its full rotation From black to red leads the reading should be 2 5K ohms and remain steady throughout the full rotation of the dial If the thermocouple probe and the control potentiometer check good then the problem is usually with the temperature control board Solenoid Valve If output voltage is present at temperature control board check for voltage at solenoid valve If voltage is present listen for valve to open and close Also check for opens and shorts in coil Replace as needed 32 Impinger 1000 Series Service Manual International Intermittent heating As Follows Conveyor will not run S N 100 4389 Voltage Supply Both the main fan motor and burner blower motor are equipped with thermal protection and will cease to operate if overheating occurs This can cause the units to cycle on and off intermittently This may be caused by improper ventilation Also most of the problems listed under oven will not heat can cause intermittent failure Check incoming voltage supply at line
107. nsformer secondary NOTE this control transformer outputs 2 secondary voltages Red Leads 29 VAC Brown Leads 10 VAC If BOTH secondary voltages are not present replace the transformer Speed Adjustment This is a 0 to 50k ohm 10 turn potentiometer WITH Potentiometer POWER OFF remove the 3 pin potentiometer cable plug from the motor control board With a digital multimeter check the ohm reading across the red lead to the black lead this reading should be 50k ohms 5 as the potentiometer is rotated through its 10 turn rotation Place the meter leads on the red lead and white lead Rotating the potentiometer slowly from low to high the meter should show an even transition from 0 to 50K ohms 5 through the 10 turn rotation of the potentiometer There should be no dead or open spots through the 10 turns of the potentiometer Check all three leads to ground There should be no continuity to ground If any of the above checks fail replace the potentiometer Conveyor Motor Stepper NOTE if the conveyor drive motor becomes Control jammed or begins to run at an uncontrolled speed the conveyor motor will stop running To reset turn off the conveyor switch wait 10 seconds turn the conveyor switch on If the motor does not run after attempting re set check for 2 29 VAC across the motor terminals 1 to 2 and 3 to 5 on the conveyor motor control If voltage is not present at both sets of terminals replace control Conveyor Drive Stepper
108. o the DC motor control board and is used as a reference for maintaining a constant conveyor speed Impinger 1000 Series Service Manual International 3 TIME TEMP DISPLAY The Time Temp Display is energized when the Fan Switch is closed supplying 120 VAG to the primary of the 12 6 volt Transformer The secondary output of the transformer normally 13 to 14 VAG depending on input with a center tap is supplied to terminals 1 2 and 3 of the Time Temp Display The center tap is terminal 2 The display works on a balanced input and center tap voltage to each leg must be 1 2 the total reading The speed side of the Time Temp Display uses a slotted disc cemented to tach coupling to break the infra red light beam of the optical switch mounted on gear motor producing electrical pulses that are transmitted to the display The display converts these pulses into a read out of minutes and seconds The temperature portion of the display uses a Thermistor Probe to sense oven temperature The thermistor outputs a resistance proportional to the oven temperature This resistance is then converted by the display into a temperature reading SEQUENCE OF OPERATIONS 1106 MODEL 1006 240 VAC 50HZ 1 PHASE NATURAL GAS POWER SUPPLY Electrical Power to be supplied to the Oven by a three conductor service Red conductor is Hot Black conductor is Neutral Green conductor is Ground CONTROL BOX AUTO When the temperature in the Control Box
109. oceed to next component Thermocouple Probe Remove thermocouple leads from the temperature control board and measure the millivolt output of these leads Refer to chart on page 59 in the adjustment section for proper readings Temperature Control Turn temperature control dial to full on position Measure for 120 VAC across terminals N O and L2 if voltage is not present replace control Solenoid Valve If voltage is present at terminals N O and L2 check for voltage at solenoid valve If voltage is present listen for valve to open and close Also check for opens and shorts in coil If solenoid valve is defective replace Intermittent Heating Both the main fan motor and burner blower motor are equipped with thermo protection and will cease to operate when not cooled properly This can cause the units to cycle on and off intermittently Also most of the problems listed under oven will not heat can cause intermittent failures For continuing intermittent problems a series of test lights may be made and installed in the ovens The lights will allow the customer to advise the service technician a trouble code when the oven fails The lights should be connected in the following manner Light l attached in 120VAC line after Air Pressure Switch Light 2 attached after 120VAC contacts of Burner Motor Relay or refer to Bulletin 028 for Relay Removal Light 3 in 24VAC Burner Transformer Secondary Impinger
110. or 2 to 29 VAG across the motor terminal 1 to 2 and 3 to 5 on the conveyor motor control If voltage is not present at both sets of terminals replace control Check the drive sprocket on motor output shaft to insure that is tight Check motor windings measurements should be approximately 2 ohms Terminal 1 5 2 6 3 7 4 8 WITH POWER OFF Turn the motor shaft to check for jammed gear box If motor shaft will not turn replace conveyor drive stepper motor Measure the transformer primary for a nominal 120 VAC input Measure the secondary voltage output which will be 12 5 to 15 VAC normally Recheck secondary output at rear of Time Temp Display Terminals 1 to 3 should read 12 5 to 15 VAC Terminals 1 to 2 and 2 to 3 should be 1 2 of the reading across 1 to 3 If you do not get the above secondary readings replace the transformer If 120 VAC primary voltage is not available refer to the schematic and trace circuit for incoming power failure There is a 4 amp fuse in each red secondary lead These may be jumpered for test only to determine if they are defective or intermittent Dual belt ovens utilize a double pole double throw switch which allows either of the optical encoders to be read from a single Time Temp Display Check the switch and replace as needed Place your pyrometer thermocouple into the center between fingers T2 and T3 in the oven Disconnect the yellow tipped thermistor leads from the time temp terminals 9 and 10 M
111. ot present for approx 20 minutes replace the timer remain closed during the 20 minute cool down minute cool down turned off 20 Minute Time Delay 120 VAC at terminal 2 should discontinue approximately 20 minutes after main fan is switched off If the oven start relay contacts are open and the voltage continues at terminal 2 of the 20 minute timer replace the timer Oven Fan Relay Check to insure that the contacts are opening after the coil is de energized No control box cooling Fan Switch Oven Start SEE MAIN FAN WILL NOT RUN 120 VAC should Relay20 Minute Time Delay now be at this motor If voltage is present check No main fan cool down Oven Fan Relay Cooling motor for shorts opens or grounds WITH POWER Fans OFF check for locked rotor 46 Impinger 1000 Series Service Manual International box cooling Power Co if needed Cooling Fan Thermostat Check the cooling fan thermostat Thermostat closes at 120 F and opens at 100 F With the cooling fan thermostat pre heated check for continuity If switch is open replace 120 VAC should now be at this motor If voltage is present check motor for shorts opens or grounds WITH POWER OFF check for locked rotor Cooling fan continues Cooling Fan Thermostat Thermostat is normally open and may have closed to run after 20 minute if control box temperature is 120 F or above cool down Oven will not heat Gas Supply Check for adequa
112. otor Refasten tach bracket in proper alignment Tighten the set screw on the tach side first maintaining the 010 minimum dimension between the coupling hub and tach Pull the coupling apart approximately 1 8 3 2mm and fasten the motor side set screw If the optical encoder was loosened refer to optical encoder in this section for adjustment NOTE The thin slotted encoder disc must be handled with care so not to bend it Recheck tightness on the set screws to be sure they are tight If available LOC TITE the removable kind should be used to secure set screws OPTICAL ENCODER ASSEMBLY D 2 OLE 64 Shut off power at main breaker Remove conveyor motor assembly If replacing with new assembly cut wires to remove as new wires and plug are provided If only removing for access to coupling follow step 4 Remove pins from connectors with pin extractor tool P N 369600 Loosen dust cover screws and pull dust cover away from motor Remove 2 screws from optical encoder and remove encoder Reassemble in reverse order To adjust optical encoder Position the encoder assembly so it does not rub the coupler hub and is square with the encoder disc The infrared light beam will be broken by slots in the encoder disc The encoder disc should not touch the bottom or top of the optical encoder If it does readjust the coupling The digital speed readout may be observed to check proper adjustment of the optical encoder assembly Impinger
113. output Check specific oven model schematic for circuit location Oven Fan Fuse s Check and or Replace Fuse Holder Check and or Replace Check continuity between switch terminals Main Relay Check continuity to 120 VAC coil Check for power to relay coil 120 VAC Check for 208 240 VAC to relay terminals Visually check for contact pull in Fan Motor Check for opens shorts or grounds WITH POWER OFF Turn Fan Blade to check for locked rotor Cool Down Thermostat Check cool down thermostat thermostat closes at 160 F and opens at 140 F Check for power 120 VAC at cool down thermostat With the cool down thermostat pre heated check for continuity If switch is open replace Check for power to Main Fan Relay Visually check for contact pull in Main Fan Relay Export Ovens Axial Cooling Fan For ovens equipped with a control circuit step down transformer the supply voltage for the cooling fan is 240 VAC WITH POWER OFF check for locked rotor Check for power 120 VAC to cooling fan If 120 VAC is present at the fan motor and the fan does not run replace fan assembly Incoming Power Supply Check breakers Reset if needed Check for incoming power 120 VAC at cooling fan thermostat Cooling Fan Thermostat Check cooling fan thermostat thermostat closes at 120 F and opens at 100 F With cooling fan thermostat pre heated check for continuity If switch is open replace fan does not run replace
114. output of the Transformers 12 5 to 15 VAC with a center tap is supplies to terminals 1 2 and of the Time Temp Display The display works on a balanced input and the center tap voltage to each leg must be 1 2 the total reading The speed side of the Time Temp Display is supplied by the Conveyor Control with the frequency of the pulses to the Conveyor Motor This frequency is converted by the Time Temp Display into a read out of minutes and seconds NOTE The Conveyor Control uses a sensor and magnet mounted on the Conveyor Motor that senses when the motor is not turning If the motor is not turning the Time Temp Display will show in the window The temperature portion of the display uses a Thermistor Probe to sense oven temperature The Thermistor outputs a resistance proportional to oven temperature This resistance is then converted by the Display into a temperature reading OR The temperature portion of the display uses a J type thermocouple to measure oven temperature The thermocouple generates D C millivolts proportional to oven temperature This millivolt reading is then converted by the display into a temperature reading SEQUENCE OF OPERATIONS 1042 1043 1242 1243 POWER SUPPLY CONTROL BOX AUTO COOL DOWN MAIN FAN CIRCUIT TRANSFORMER 12 6 VAC BURNER CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE S N Q14790 amp Below 1200 series S N Q14973 amp Below 1000 series S N Q14791 amp Abo
115. ove The speed side of the Time Temp Display uses a slotted disc cemented to tach 1200 series S N 014974 coupling to break the infra red light beam of the optical switch mounted on gear amp Above motor producing electrical pulses that are transmitted to the display The display 1000 series refer to Pg converts these pulses into a read out of minutes and seconds The temperature 9 portion of the display uses a Thermistor Probe to sense oven temperature The thermistor outputs a resistance proportional to the oven temperature This resistance is then converted by the display into a temperature reading Impinger 1000 Series Service Manual International 11 SCHEMATIC 1002 1003 COLL PUE ZOLL STIGONN aunivusdWi UHVOG TOHINOO 213 s OVA 911 UINHOJSNVUL 30 COLL 13GON A 0 AVTdSIG HOLOWHYAD ZOLL TOON A 802 SWHO 2 0 UILIMOUNILO dl DONITOOD HOLON ZW ISANINITS DNILYSH HOLSINHIHL HL HOLOM AN aod WOLOVLNOD 45 guoponnsul uo gieAuco uonoag SVdNODJONUIHL 21 H3LY3H AOWd dwvi 1 Ot SRHO J 5 0 H313AOLLN3IOd 40 H313MOHOVl1 1 HOA3ANOO 5 4 94 HOLOW 22 02569 Jequunu Wed sn d 324596 PJEOG 4 1 135 AVT1dSIG HOL
116. ove the sprocket from the conveyor motor shaft by loosening the set screws and sliding the sprocket off the shaft Unplug the conveyor motor wiring harness Remove the four 4 mounting bolts and nuts Reassemble in reverse order and calibrate the conveyor D C control board See D C Motor Control Board Calibration Bodine System APS o sto CONVEYOR MOTOR REPLACEMENT BALDOR 1000 SERIES SN 4390 14974 1200 SERIES SN 4390 14791 1 Shut off power at main breaker 2 Remove control panel top and front cover 3 Remove the conveyor drive chain from the motor sprocket 4 Remove chain guard Impinger 1000 Series Service Manual International 63 10 Remove the sprocket from the conveyor motor shaft by loosening the set screws and sliding the sprocket off the shaft Unplug the wiring harness for the motor Disconnect the red and black wires from the terminals on the tach generator which is mounted on the top of the D C conveyor motor Note which terminal the red and black wires are attached to Reversing the polarity will cause motor to run wide open with no control from the speed pot Remove the four 4 mounting bolts Remove dust cover remove tach tach bracket coupling and optical encoder assembly for reinstallation on new motor assembly See pages 104 amp 105 Reassemble in reverse order and calibrate in the conveyor D C control board See D C Motor Control Board Calibration CONVEYOR MO
117. pens at 140 Closing the Main Fan Switch supplies 220 VAC through Fuse to the normally open Burner Switch and to the control circuit Step Down Transformer the transformer steps the voltage down to 120 VAC for the control circuit 120 VAC is supplied to the coil of the Main Fan Relay The coil is energized the normally open contacts close supplying 220 VAC through one 10A Fuse to the Main Fan Motor 120 VAC is also supplied to the 12 6 VAC Transformer the Temperature Controller and the Conveyor Switch TRANSFORMER 12 6 Upon closure of the Fan Switch 120 VAC is supplied to the primary of the 12 6 VAC VAC Transformer The Transformer steps the voltage down to 12 6 VAC normally 13 to 6 Impinger 1000 Series Service Manual International BURNER CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE S N4390 Q17170 Conveyor Drive Q171701 amp Above See Page 9 Time Temp Display Q17171 amp Above See Page 9 TIME TEMP DISPLAY Q17171 amp Above See Page 9 POWER SUPPLY MAIN FAN CIRCUIT 14 VAC with a center tap and supplies power to the Time Temp Display The voltage from each leg of the Transformer s secondary to the center tap should be one half of the secondary voltage Closing the normally open Burner Switch supplies 220 VAC through the gas pressure proving switch and through the Main Fan Air Pressure Switch to the Ignition Control The combustion motor relay is energized its normally open contacts no
118. proper adjustment Measure the speed of the conveyor and adjust the time temp display if necessary Seal pots with Glyptol or nail polish NOTE Occasionally a new board Style 2 and 3 only is so far out of adjustment that you will be unable to adjust the correct voltage To correct turn both the MAX and MIN pots 10 turns in either direction and then 5 turns in opposite direction This will center the pots and allow them to be calibrated If after this procedure the board will not adjust it is probably defective Impinger 1000 Series Service Manual International 67 68 am 4 A FUSE 1 A FUSE RESISTOR L 1 I L2 L2 A A P2 fri 104 1 T2 BOARD P N 369155 B BOARD P N 369272 STYLE 2 RESISTOR CAPACITOR MIN MAX 53 ig T1 T2 BOARD P N 369155 STYLE 3 Impinger 1000 Series Service Manual International STEPPER CONTROL ADJUSTMENT S N 14975 AND ABOVE 1000 SERIES GAS OVEN S N 14792 AND ABOVE 1200 SERIES GAS OVEN CURRENT SENSE DO NOT ADJUST Heat Sink aa TEN TH Gra Max Brown Conveyor M med Speed Adi Speed Adj Gray POWER a LOCKED ROTOR POTENTIOMETER To T T display u TIME TEMP 1 With power off the five 5 dip switches located on the conveyor control see drawing above should be set as below DIP SWITCHES CONTROL 1 2 3 4 5 SWITCH POSITION OFF OFF ON OFF OFF 2 With power off the ten 10
119. r The Temperature Controller supplies 120 VAC to the Solenoid Valve at intermittent intervals to maintain desired temperature Closing the fan switch and the normally open conveyor switch supplies 120 VAC to the Motor Control Board AC volts are converted to DC volts and are supplied to the Conveyor Motor at terminals A and A Adjustment of the Speed Control Potentiometer 5 000 ohm 10 turn will change resistance at terminals P1 P2 and P3 varying the DC voltage to the motor The speed of the conveyor motor will increase or decrease as the DC voltage from the board increases or decreases respectively As the motor turns it drives both the reducer gearbox and the tach generator The tach generator is a DC voltage generator which supplies a voltage to the DC motor control board and is used as a reference for maintaining a constant conveyor speed Impinger 1000 Series Service Manual International TIME TEMP The Time Temp Display is energized when the Fan Switch is closed supplying 120 DISPLAY S N Q14790 amp VAC to the primary of the12 6 volt Transformer The secondary output of the Below 1200 series S N transformer normally 13 to 14 VAG depending on input with a center tap is Q14973 amp Below 1000 supplied to terminals 1 2 and 3 of the Time Temp Display The center tap is series terminal 2 The display works on a balanced input and center tap voltage to each leg must be 1 2 the total reading S N Q14791 amp Ab
120. r air pressure switch closes upon sensing air pressure After a pre purge period of 30 60 seconds the main gas valve and the spark generator are energized Ignition should now occur After proving the pilot flame and a 30 second delay the gas control relay and the burner indicator lamp are energized Closing the Fan Switch supplies through the Step Down Transformer 120 VAC to the Temperature Control Board The Temperature Potentiometer is adjusted to desired temperature The Thermocouple will provide varying millivolts to the Temperature Controller The Temperature Controller supplies 120 VAC to the oolenoid Valve at intermittent intervals to maintain desired temperature An electronic flame monitor proves main flame operation in the 1033 1034 models Closing the Oven Fan Switch supplies 120 VAC through the Power Transformer to the normally open Conveyor Switch Closing the Conveyor Switch supplies 120 VAC through a 3 AMP Fuse to the primary of the Conveyor Control Transformer The secondary of this Transformer supplies 10 VAC and 29 VAC to the Conveyor Control The conveyor control supplies voltage pulses to the Conveyor Control The Conveyor Control Potentiometer varies the frequency of these pulses The motor speed will increase or decrease as the frequency of the pulses increase or decrease respectively Closing the Oven Fan Switch supplies 120 VAC through the Power Transformer to the primary of the Time Temp Transformer The secondary
121. r transformer If voltage is present check for 24 VAC at pin 6 and the ground bar on ignition control and valve assembly If the burner blower motor is running and there is no voltage at pin 6 and the ground bar on the ignition control valve replace the burner blower motor Ignition Control and Valve Check for 24 VAC supply to the ignition control and Assembly valve assembly at pin 6 and the ground bar If voltage is present check for 24 VAC across pin 1 and the ground bar pilot valve If voltage is not present replace electronic control package If the pilot valve is energized check to see that the high voltage ignitor circuit is also energized To check disconnect the ignitor lead from the bottom of ignition control Place female terminal of ignitor lead approximately 1 8 from terminal post on ignition control Spark should jump the 1 8 gap If no spark is present replace ignition control No Pilot If the ignition control is supplied with 24 VAC and the pilot valve internal to valve assembly and ignitor circuits are energized visually check for pilot flame This may be done by opening the small inspection door on the end of the burner or by opening the main oven door and looking under the lower finger housings on the right side of the oven If no pilot flame is visible check the following Pilot Shut off Valve Check to see that pilot shut off valve is open shut off valve is located between ignition control and valve assem
122. reaches 120 F 3 the Cooling Fan COOL DOWN Thermostat will switch power to the Control Box Cooling Fan The Thermostat will interrupt power to the Cooling Fan when the Control Box temperature falls to 100 F 3 5 MAIN FAN CIRCUIT Electrical power is permanently supplied to the normally open contacts of the Double Pole Main Fan Relay the Cooling Fan Thermostat and through a 3A Fuse to the normally open Double Pole Main Fan Switch and the normally open Cool Down Thermostat thermostat closes at 160 F and opens 140 Closing the Main Fan owitch supplies 240 VAC to the primary of the control circuit Step Down Transformer The transformer steps the voltage down to 120VAC for the control circuit 120 VAC is supplied to the coil of the Main Fan Relay The coil of the Relay is energized the normally open contacts now close energizing the Main Fan Motor through one 10A fuse Closing the Fan Switch also supplies power to the Cooling Fan the 12 6 VAC Transformer the Burner and Conveyor Switches TRANSFORMER 12 6 Upon closure of the Fan Switch 120 VAC is supplied to the primary of the 12 6 VAC VAC Transformer The Transformer steps the voltage down to 12 6 VAC normally 13 to 14 VAC with a center tap and supplies power to the Time Temp Display The voltage from each leg of the Transformer s secondary to the center tap should be one half of the secondary voltage BURNER CIRCUIT Closing the Fan Switch and the normally open Burner Switch supplies
123. res from temperature control board note wire colors and location Install new temperature control board in reverse order and check system operation RELAY GAS CONTROL REPLACEMENT MODEL 1046 1047 DOR NG Shut off power at main breaker Remove control panel top and front cover Remove cover from relay box Disconnect all wires and mark for replacement Remove relay by removing two 2 mounting screw Reassemble in reverse order TIME DELAY RELAY 20 MINUTE REPLAGEMENT pp I Remove control box top and front cover Disconnect all wires and mark for replacement Remove center mounting screw Reassemble in reverse order NOTE Do not over tighten mounting screw as this may damage the internal electronic components CONVEYOR BEARING REPLACEMENT AND SHAFT LUBRICATION 1200 SERIES OVENS DOG IM Remove conveyor from oven Hemove conveyor belt Remove idle amp drive shaft assemblies Disassemble and clean replace parts as needed Use Molykote G N Metal Assembly Paste for lubrication Impinger 1000 Series Service Manual International 79 PARTS MODEL SERIES 1000 amp 1200 GENERAL LETTER PART NO DESCRIPTION B 2369207 Handle Retainer 369337 Retainer See Page E 18 D 1390 Jlath amp Stiie I 969643 Strike Assy 969367 Flue Assy Electric O 236140 Conveyor Hold Down Bracket P 360139 Shoulder Serew Q 36058 Baf
124. sensor Thermistor Probe 2 the yellow tipped thermistor leads from the yellow wires Thermocouple time temp terminals 9 and 10 Measure the Probe 1 red wire and 1 white resistance of the thermistor probe See chart on wire page 72 for proper resistance readings Thermistor Probe Inspect the thermistor bulb for its proper location in its spring holder Check for short in leads where they enter the sensor bulb Also check each thermistor lead for short to ground Thermocouple Probe Place your pyrometer thermocouple into the center between fingers T2 and T3 in the oven Connect temperature meter to thermocouple at terminals 9 amp 10 on back of the time temp display Be sure to maintain proper polarity on thermocouple connections Compare actual oven temperature with the reading at the time temp display If the temperature readings match recalibrate or replace time temp display If the readings do not match replace thermocouple probe Erratic time temp display If strange or unusual behavior is experienced such as a rolling of numbers lock up at a given number first check for a display circuit lock up This can be caused by a voltage spike or surge To eliminate this condition remove power from the time temp display by shutting off the main fan switch or if display stays on older models circuit breaker interruption may be required This should eliminate the problem If the problem continues jumper the two fuses in the red wires
125. tain desired belt direction Reassemble in reverse order SGD SN 4390 14974 1000 SERIES GAS OVEN SN 4390 14791 1200 SERIES All ovens leaving our plant are wired to operate conveyors from left to right To reverse conveyor direction use the following procedure Shut off power at main breaker Remove control panel top Remove cover from relay box Reverse wires fastened to terminals A and A Reverse wires fastened to terminals T1 and T2 Both set of leads must be reversed or oven will run at maximum speed with no speed adjustment possible rope hr STEPPER DRIVE SYSTEM SN 14975 AND ABOVE 1000 SERIES GAS OVEN SN 14792 AND ABOVE 1200 SERIES Shut off power at main breaker Remove control panel top Remove relay box cover Change position of dip switch 41 on stepper control board Reassemble in reverse order RR Poa MINI CIRCUIT BREAKER Shut off power at main breaker Remove control panel top and front panel Disconnect two 2 wires from circuit breaker Remove knurled mounting nut and remove Reassemble in reverse order NOTE Be sure to reset breaker before operating She BEARING CONVEYOR SN 100 2163 1 Remove conveyor from oven and place of flat surface 2 Remove connecting links from conveyor belting See Installation and Operating Instructions Manual 3i Hemove conveyor belting from conveyor DRIVE END 1 Remove drive sprocket from drive shaft 2 Remove drive shaft from end of conv
126. tches are for Hertz settings OFF 60HZ amp ON 50HZ These switches are for temperature read out OFF Degrees amp ON Degrees C Turn power on d Calibrate time Place an object on the conveyor belt and time with a stopwatch the elapsed time for the object to travel through the oven Leading edge in to leading edge out Push in and hold the set button Adjust the time calibration pot on the rear of the module until the display numbers match the measured time Seal adjustment pot with Glyptol or nail polish e Calibrate temperature Place a temperature sensor in between top two fingers and set temperature control to 500 F allow temperature to stabilize Fine Tune temperature setting to achieve measured temperature swings from 497 F to 503 F So if actual temperature falls between 497 and 503 F the display must show 500 F Adjust temperature calibration pot to achieve a display reading of 500 F 260 DIP SWITCH MODULE HI TYPE I AND II HAVE ONLY 6 SWITCHES es x H E al E ala 3 SWITCH POSITION ON OFF 3565 5 2 2 3 c a 1 FROM TO TO TRANSFORMER SET THERMISTOR SWITCH PROBE TO CONVEYOR MOTOR PICK UP To identify the module measure the width of the case Type I is 51 8 inches wide Type Il is 5 5 8 inches wide Type I amp have position dip switch module Type has a 10 position dip switch
127. te gas supply to oven Manual Gas Shut off Valve Check to see that manual shut off valve is open Fan Switch Main Oven Fan Check to see that the fan switch is on Check if main oven fan is operating If not refer to Oven fan will not run Oven Start Relay Check for contacts to close Burner Switch Check for 220 VAC to neutral on both sides of switch Air Pressure Switch Check for 220 VAC on both sides of switch If voltage present on one side only check for air tube blockage Adjust air switch If above fails replace air pressure switch Gas Pressure Switch Check for 220 VAC to neutral on both sides of switch If voltage is present on one side of switch only check the following Check for proper gas pressure supply to gas valve Marked on oven spec plate Check for proper adjustment of gas pressure switch Should be set at 8 8 for Nat 23 for L P Check gas filter in gas valve for blockage or damage See Adjustment Section for location If the above checks okay but switch still not closed replace gas valve Hi Limit Thermostat Terminals are normally closed If open reset and test oven for proper operation If thermostat will not hold for maximum oven temperature and oven is not exceeding temperature dial setting check for proper location of capillary bulb in its spring holder If above checks okay replace hi limit thermostat Ignition Control Check for 220 VAC supply to ignition control at pin 1 and neutral If
128. tput at terminals A1 and A2 replace the D C control board If there is D C voltage output from the motor control board but the conveyor drive motor is not running check the D P D T reversing switch Check the conveyor drive sprocket for tightness Disconnect the motor check the red and black motor leads for opens shorts or grounds Check the brushes for excessive or abnormal wear Replace as needed Reconnect motor Test for operation If motor does not run replace Check incoming voltage supply at line 1 to neutral There should be a voltage reading of 120 VAC If not present check breakers This conveyor fuse is located on the front panel Replace if defective Fuseholder Check and or Replace See procedure for checking on page 26 Conveyor Switch Same procedure as for fan switch NOTE Dual Belt Ovens Impinger 1000 Series Service Manual International Dual belt ovens utilize 2 complete independent conveyor drive systems The trouble shooting procedures are the same as single belt ovens except that the dual belt ovens use one each of the following one A DC control board and one B D C control board 33 Speed Adjustment This is a 0 to 5 K ohm 10 turn potentiometer With Potentiometer power off remove the red black and white pot leads from the motor control board at terminals P1 P2 and P3 With a digital multimeter check the ohm reading across the red lead P3 to the black lead P1 This re
129. trip Remove two 2 wires for spark generator Unplug connector on bottom of spark generator Remove two 2 mounting screws and remove generator assembly Reassemble in reverse order and check system operation ST Los pu SOLENOID VALVE REPLACEMENT Remove control panel top and front cover Disconnect pipe union just above gas valve assembly Disconnect two 2 wires from solenoid note wire number and location for reinstallation Hemove four 4 nuts from main orifice burner bracket and remove assembly Replace valve and reassemble in reverse order After assembly check all fittings for leaks and check system operation OD I DE FLOW BURNER ALARM REPLACEMENT 1 Remove control panel top and front cover 2 Remove two 2 wires from alarm note wire numbers and location 3 Remove retainer cover from alarm and remove assembly from mounting bracket 4 Reassemble in reverse order and check Impinger 1000 Series Service Manual International 77 BURNER ALARM LIGHT REPLACEMENT er Remove control panel top and front cover Remove two 2 wires from light assembly note wire number and location Grasp body of light assembly and slide sideways to remove Reassemble in reverse order and check PILOT LIGHT 220V REPLACEMENT Ch DE Remove control panel top and front cover Remove switch access cover Remove two 2 wires from light assembly note wire number and location Grasp body
130. trol uses the spark ignitor as the flame sensor If spark continues check for proper ground connections at Ignition Control Check pilot orifice for any partial blockage If the above checks OK replace ignition control If soark stops when pilot is lit check for 24 VAC across M V M V P V terminals if voltage is not present replace ignition control If voltage is present at terminals M V M V P V the indicator light on the control panel should be on verify that the main valve has opened connect manometer to manifold gas pressure tap located on the back side of the gas valve If no gas is present replace gas valve Red Indicator Light is Temperature Control Valve Check for gas supply at temperaturecontrol Check on but no main Robert Shaw for temperature control set above 300 F flame For ovens with Main Orifice Check for blockage of main orifice If there is no mechanical blockage to the main orifice replace the thermostat temperature control For ovens with Temperature Control Check for 120 VAC across L1 and L2on Electronic Potentiometer temperature control board Potentiometer 1000 Temperature Control ohm 1 turn WITH POWER OFF check ohms across red and black leads the ohm reading should be 0 to1000 ohms as the dial is turned From green to red the reading should be 1000 ohms steady throughout the full turn of the dial NOTE Ovens S N Q18037 and above the potentiometer is internal to temperature control Pr
131. valve replace No Pilot Solenoid Valve If all above are operating properly but there is no pilot flame check for any obstructions in bypass orifice drilled port through wall inside solenoid valve Pilot flame but burner Flame Sensor There should be a visible pilot flame at this time will not stay ignited To check for flame sensor operation connect a digital multimeter capable of measuring D C micro amperes between the flame sensor wire and terminal F on the ignition control or in flame sensor lead for Landis amp Gyr NOTE this is a current measurement and the meter must be connected in series Proper current readings should be between 2 and 4 micro Amp D C for Honeywell 3 micro amp for Landis amp Gyr minimum If these readings are not achieved replace ignitor sensor assembly Also check for any type of damage to flame sensor wire and connections Ignition Control If there is sufficient flame sensor current but the burner will not remain ignited check reset button on ignition control if all above are okay replace ignition control Red indicator light is Temperature Control Check for 120 VAC across L1 and L2 on on but no main flame temperature control board If no voltage present retrace wiring back to power supply Turn the temperature adjustment knob to the maximum temperature position and check for 120 VAC at the load terminal to neutral If 120 VAC is not present proceed as follows If 120 VAC is present and u
132. ve 1200 series S N Q14974 amp Above 1000 series refer to Pg 9 MODEL 1042 240V 50HZ NATURAL GAS MODEL 1043 240V 50HZ L P GAS MODEL 1242 240V 50HZ NATURAL GAS DUAL BELT MODEL 1243 240V 50HZ L P GAS DUAL BELT Electrical Power to be supplied to the Oven by a three conductor service Black conductor is Hot Red conductor is Neutral Green conductor is Ground When the temperature in the Control Box reaches 120 F 3 the Cooling Fan Thermostat will switch power to the Control Box Cooling Fan The Thermostat will interrupt power to the Cooling Fan when the Control Box temperature falls to 100 F 3 Electrical power is permanently supplied to the normally open contacts of the Double Pole Main Fan Relay the Cooling Fan Thermostat the normally open Double Pole Main Fan Switch and the normally open Cool Down Thermostat thermostat closes at 160 F and opens at 140 F Closing the Main Fan Switch supplies 240 VAC through a 3A Fuse to the primary of the control circuit Step Down Transformer The Transformer steps the voltage down to 120 VAC for the control circuit 120 VAC is supplied to the coil of the Double Pole Main Fan Relay The coil of the relay is energized The normally open contacts now close energizing the Main Fan Motor through one 10A Fuse Closing the Fan Switch also supplies power to the Cooling Fan the 12 6 VAC Transformer the Burner and Conveyor Switches Upon closure of the Fan Switch 120
133. voltage to each leg must be 1 2 the total reading The speed side of the Time Temp Display uses a slotted disc cemented to tach coupling to break the infra red light beam of the optical switch mounted on gear motor producing electrical pulses that are transmitted to the display The display converts these pulses into a read out of minutes and seconds The temperature portion of the display uses a Thermistor Probe to sense oven temperature The thermistor outputs a resistance proportional to the oven temperature This resistance is then converted by the display into a temperature reading SEQUENCE OF OPERATIONS 1033 1034 1046 1047 POWER SUPPLY CONTROL BOX AUTO COOL DOWN MAIN FAN CIRCUIT MODEL 1033 220 VAC 50HZ NATURAL GAS MODEL 1034 220 VAC 50HZ L P GAS MODEL 1046 240 VAC 50HZ NATURAL GAS MODEL 1047 240 VAC 50HZ L P GAS Electrical Power to be supplies to the oven by a three conductor service Brown conductor is Hot Blue conductor is Neutral Green conductor is Ground When the temperature in the Control Box reaches 120 F 3 the Cooling Fan Thermostat will switch power to the Control Box Cooling Fan The Thermostat will interrupt power to the Cooling Fan when the Control Box temperature falls to 100 F 3 Electrical power is permanently supplied to the normally open contacts of the oven fan motor relay the Cooling Fan Thermostat and the normally open Oven Fan Switch Closing the oven
134. w close supplying120 VAC to the combustion motor The normally open combustion air switch closes upon sensing air After pre purge period of between 30 and 60 seconds the Ignition Transformer is energized and the Main Gas Valve is energized Ignition should now occur Closing the Fan Switch supplies through the Step down Transformer 120 VAC to the Temperature Control Board The 2 5K ohm Temperature Potentiometer is adjusted to desired temperature The Thermocouple will provide varying millivolts to the Temperature Controller The Temperature Controller supplies 120 VAC to the Solenoid Valve at intermittent intervals to maintain desired temperature Closing the fan switch and the normally open conveyor switch supplies 120 VAC to the Motor Control Board AC volts are converted to DC volts and are supplied to the Conveyor Motor at terminals A and A Adjustment of the Speed Control Potentiometer 5 000 ohm 10 turn will change resistance at terminals P1 P2 and P3 varying the DC voltage to the Conveyor Motor The speed of the conveyor motor will increase or decrease as the DC voltage from the board increases or decreases respectively As the motor turns it drives both the reducer gearbox and the tach generator The tach generator is a DC voltage generator which supplies a voltage to the DC motor control board and is used as a reference for maintaining a constant conveyor speed The Time Temp Display is energized when the Fan Switch is closed supp
135. x N 27 gn _ t EK A Impinger 1000 Series Service Manual International 83 PARTS MODEL 1002 1003 S N 4390 amp UP LETTER P N DESCRIPTION B 37107 FuseHolder 369012 SOS 369014 Fue itOAm SOS D 369000 Conveyor Speed Control Dial Non Digital Display Ovens 36924 ko 1 860004 PilotLight 24VAC K 1 SEEPAGEO4 357028 Fuse Delay 1A250V 2 369201 Fuse4Amp250V O 1 369240 P 39007 Temperature Sensing Switch 0 1 496173 Control Transformer R 3969 Unit Relay Cover TopLH 369029 Temperature Gauge 39300 Thermostat Knob Degree 369393 Ignition Control NAT amp LP 26906 Temperature Control Valve 369099 MainBumerOrfice LP I 369073 Pilot Orifice Natural Gas eooo PilotOrifioe UP 369535 Cord Set Cooling Fan OO 36912 Oven Conveyor Control Pot pole 4 Impinger 1000 Series Service Manual International QO BLOW 1002 1003 S N 4390 amp ABOVE Impinger 1000 Series Service Manual International 85 PARTS MODEL 1006 LETTER P N DESCRIPTION B X 37107 jFusHode 3904 Fuse10Amp D 369248 J 369158 10 Tooth Sprocket S N 4390 amp Above F 9575 Switch ON OFF G 369260 Dou
136. x pot for a reading of 3 4 VDC In this instance a reading of 3 45 VDC is acceptable Adjust speed pot to obtain the proper time setting for the conveyor to meet customers desired speed Check conveyor travel in a no load situation to insure conveyor belt is traveling at a constant speed Impinger 1000 Series Service Manual International 65 GND 53 52 51 A2 A 1 F2 F 1 L2 L1 TERMINAL FUSE STRIP D C CONTROL BOARD BODINE S N 100 4389 TOP VIEW D C MOTOR CONTROL BOARD SN 4390 14974 1000 SERIES GAS OVENS SN 4390 14790 1200 SERIES Three different styles of control boards have been used and all three are still usable All three were supplied under the same part number STYLE 1 CONTROL BOARD ADJUSTMENT NOTE A digital meter must be used for this adjustment Voltage at L1 and L2 terminals of the control board is to be 120 VAG 10 Connect a digital volt meter to terminals A and A set meter on 200 VDG scale Turn speed control pot on oven control panel to its maximum speed setting Turn MAX MIN and IR pots counter clockwise until they stop DO NOT turn CL pot Adjust TACH pot so the volt meter indicates 110 VDC 0 5 volts Adjust IR pot to read between 1 5 and 2 VDC above tach reading Example If tach reading would be 110 3 then adjust IR to between 111 8 VDC and 112 3 VDC Turn speed control pot to its minimum speed setting Adjust MIN pot so the voltmeter

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