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SERVICE MANUAL

1. Remove two mounting nuts from burner flange and remove burner flange Hemove main burner orifice from the burner flange Reassemble in reverse order Check all gas line fittings for leaks and check system operation PILOT ORIFICE REPLACEMENT poppe Shut off power at main breaker Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven Remove control box cover and control box front cover Remove pilot tube from gas valve Disconnect pipe union at burner and at inlet to main gas valve Loosen pipe clamp and move piping away from burner Disconnect wiring from burner and mark wiring for reassembly Remove four screws from burner end plate and remove burner assembly from burner housing Remove pilot tube from igniter assembly and remove pilot orifice Reassemble in reverse order Check all gas line fittings for leaks Check system operation SPARK IGNITER REPLACEMENT ib 2 3 Shut off power at main breaker Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven Remove control box cover and control box front cover Impinger X2 Digital Service Manual Dom amp Int l 4 Remove pilot tube from gas valve Disconnect pipe union at burner and at inlet to main gas valve Loosen pipe clamp and move piping away from burner Disconnect wiring from burner and mark wiring for reassembly Remove four screws from burner end plate and remove burne
2. OT 40580 Convyorbel Mtsecion II 405900EP Rolrnothed gt Impinger X2 Digital Service Manual Dom amp Int l Impinger X2 Digital Service Manual Dom amp Intl 35 36 IMPINGER X2 OVENS CONVEYOR DUAL BELT LETTER Pan stop zero stop LL ESO CREE 495849 1ep Conveyor belt see a5900eP Rolenmothed Impinger X2 Digital Service Manual Dom amp Int l Impinger X2 Digital Service Manual Dom amp Intl 3 38 This page intentionally left blank Impinger X2 Digital Service Manual Dom amp Int l This page intentionally left blank Impinger X2 Digital Service Manual Dom amp Int l 39 40 9 Lincoln NN o lt GN SERVICE AND PARTS Impinger X2 Digital Service Manual Dom amp Int l
3. Press and hold the 2 RH buttons to enter Sub Level program A prompt will be displayed Technicians Only After a couple of seconds a second prompt will say Please Release Buttons After releasing the buttons quickly press the TIME button and the UP button to enter the program After Sub Program Menu is displayed press and release the TEMP button Pressing the UP or DOWN buttons will toggle choices between F and C After desired scale is selected allow control to go into normal run mode Press and hold the 2 RH buttons to enter Sub Level program A prompt will be displayed Technicians Only After a couple of seconds a second prompt will say Please Release Buttons After releasing the buttons quickly press the TIME button and the UP button to enter the program After Sub Program Menu is displayed press temp button in steps until BANDWITH appears Adjust with the UP and DOWN buttons to a BANDWITH setting of 6 Press the TEMP button in steps until THE CUTOUT VOLTAGE appears With the UP and DOWN buttons adjust THE CUTOUT VOLTAGE to 3 0 Press the TEMP button in steps until THE CUT IN VOLTAGE appears With the UP and DOWN buttons adjust THE CUT IN VOLTAGE to 4 5 oet bake time and oven temperature Set Point Menu A Press and hold the 2 LH buttons to enter Set Point program Once in Set Point program press TEMP button and adjust temperature using up or down arrows Press TIME button while still in Set Point program and adju
4. this will cause the units to cycle on and off intermittently Improper ventilation or lack of preventive maintenance may cause this Also most of the problems listed under Oven will not heat can cause intermittent failure Conveyor will not run NOTE The ovens may contain two three or four conveyor drive systems using like components The trouble shooting sequence will be the same for each of the conveyor drive systems Power supply Check circuit breakers reset if required Check power plug to be sure it is firmly in receptacle Measure incoming power call power co if needed owitch oven power Check continuity between switch terminals Replace switch as needed Relay main fan Check for 120VAC supplied to relay terminal 13 If voltage is not present trace wiring back to power supply If voltage is present check for 120VAC at terminal 14 If there is no voltage at terminal 14 and the relay is energized replace the main fan relay Transformer burner control Check for 208 240VAC supplied to primary of transformer If no voltage is present trace wiring back to the main fan switch If voltage is present check for 24VAC at transformer secondary NOTE This is a dual secondary transformer it is important to check BOTH 24VAC outputs If there is primary voltage but no secondary voltage replace burner control transformer owitch conveyor reversing Check for continuity between switch terminals Replace switch as ne
5. 80123108d QVOTHJAO 10 O 3JATA EA 80A3ANO WOL108 SOLOW 9W SH 330 NO 3AWA ZA YOA3ANO 401 NOIOH W tH NOILVINGOW 3ATVA LA 93 MO INANA AOLOW ZH LIHI1 1VISOWB3HI LL NYJ SOLOW LH AVIS AVI3O JWIL Ol 8OAJAND 01108 108LNO NO10H 2W EJW 3dAL 3141020 83 1 901 109109 SOLON ZOW LOW YIMOd NOLOM YOAIANO 2018 TYNINYIL 91 YOLOW 30A3ANO 3SN4 93 t4 ONISH3A24 N0A3ANOJ INOYS LOG 5 9S VE 108LNO ISNI DNISH3A3N 30A3AN02 X2V8 LOG MS SS SOLINDI XaVdS N0SN3S MH 15 53 ONISH3A3H 1044 901 75 YOLON NOA3ANO 5011 JVdVJ 57 1 ONISHJAIG 3013AN0J X2V8 dOL HOLIMS ES NJAO 1031N0J NO 39055384 NIV 33M018 YNANG HJLIMS 25 1041N0 XINYANG 28 YIMOd NJAO HJLIMS 15 NJAO MS 34055389 Sav Sz 5 d e S gt 1NO3J WOLLOG So L9 19 FE e Nid 038 318V 8913 Ml Ge HIVE 401 ZJW INDUS 401 NO HJLIMS 43MOd N3AO NYNL 1L 95 ES HJLIMS ONISU3A3H 0381530 319901 9 78 440 HJLIMS NJAO N NL CS EL 01123810 30A3ANO3 3SN3A38 OL ILON Impinger X2 Digital Service Manual Dom amp Intl NE ert NOLLYSNDIAND LS dv 6E BOl0H 3SVHd 1 07 OTe H e D n l SCHEMATIC DIAGRAM MODELS 3262 2 3270 2 50 HZ WI
6. Check for supply voltage at motor If no voltage is present trace wiring back to the overload protector WITH POWER OFF Check for opens shorts or grounds Turn motor shaft to check for locked rotor Capacitor Check for shorts or grounds WARNING Capacitor has a stored charge discharge before testing Drive belt Check for loose or broken drive belt Adjust motor for proper belt tension maximum of 3 8 inch deflection or replace drive belt as needed Bearings Fan shaft Check for any damage or excessive wear on the shaft bearings Replace bearings as needed Switch oven fan 30 minute time delay relay Relay main fan Overload protector main fan Impinger X2 Digital Service Manual Dom amp Intl Oven will not heat Gas supply Check for adequate gas supply to oven Manual gas shut off valve Check to see that the manual gas shut off valve is open Also check flexible gas line connection for any damage Main fan motor Check for main fan operation If it is not operating refer to Oven fan will not run Relay main fan Check for 208 240VAC supplied to relay terminal 13 If voltage is not present trace wiring back to power supply If voltage is present check for 208 240VAC at terminal 14 If there is no voltage at terminal 414 and the relay is energized replace the main fan relay Air pressure switch Main fan Check for 208 240VAC to the air pressure switch If no motor voltage is present trace wiri
7. Int l 10 11 12 13 Remove burner tube bracket and Burner tube To remove burner tube Remove cap from idle end of Oven wall and remove burner tube Bor Measure distance from end of shaft to the collar of blower wheel Loosen blower wheels from shaft 1 4 allen screws use liquid wrench Push blower wheels toward idle end Loosen and remove idle and drive end bearings Hemove shaft and blower wheel assembles measure length of shaft extension from oven wall Use same measurement when putting new shaft in Remove shaft through idle end of oven 13 NOTE When putting new shaft and blower wheels back in the wheels will have to be removed from the shaft It is important to mark the blowers left and right and to mark the positioning of the blowers on the shaft so as to maintain spacing and balance When replacing the burner tube the top of the holes in the burner tube should be 12 3 8 from the bottom of the oven When replacing the expansion bearing in the drive end be sure the yoke of the bearing is pushed as far as possible towards the oven wall and tightened on the shaft This will allow the bearing to expand outward Align pulley on drive end of shaft with pulley on drive motor Grease bearings before starting oven Impinger X2 Digital Service Manual Dom amp Intl 17 18 RELAY MAIN FAN REPLACEMENT DERG EE Shut off power at main breaker Remove control box cover Discon
8. display replace oven control If there is a read out on the control set the control to maximum temperature see Installation operations manual for temperature adjustment With the control set at maximum temperature check for supply voltage at the temperature regulation valve If there is voltage at the temperature regulation valve proceed to Temperature regulation valve for next check If there is no voltage at the temperature regulation valve trace wiring back to the oven control If there is no voltage output at the oven control check the read out on the oven control If the control reads PROBE FAIL this indicates that the thermocouple has failed or become disconnected from the oven control Check to be sure that the thermocouple is securely connected to the oven control If the thermocouple is connected to the oven control and the control indicates PROBE FAIL disconnect the thermocouple from the oven control and measure the resistance of the 13 thermocouple The thermocouple should read approx 116 If these readings are not achieved replace the thermocouple If these readings are correct proceed Oven control If the thermocouple checks good but the oven control display indicates that there is a thermocouple failure replace the oven control If the oven control indicates a temperature reading but the oven will not heat proceed Main gas valve Check to see that the switch on the valve is in the ON posit
9. energized NOTE The display also indicates oven temperature CONVEYOR DRIVE THE OVEN WILL CONTAIN BETWEEN TWO AND FOUR SEPARATE CONVEYOR DRIVE SYSTEMS THE SEQUENCE OF OPERATIONS WILL BE THE SAME FOR EACH MOTOR SYSTEM Closing the main fan switch supplies line voltage through a filter to the conveyor motor and through a filter to the primary of the control transformer Secondary voltage 24VAC is supplied to he oven control Setting the oven control to the desired time outputs voltage through a reversing switch to the conveyor motor NOTE The conveyor control uses a hall effect sensor and magnet to prove operation of the conveyor motor If the conveyor motor is not running STALL is indicated on the display AUTOMATIC COOL DOWN When the oven is started the 30 minute time delay relay is enabled permitting the oven fan to operate for approximately 30 minutes after the oven is shut off to cool the oven When the oven is shut off the 30 minute time delay relay will keep the coil of the main fan relay closed for 30 minutes maintaining operation of the main fan motor Impinger X2 Digital Service Manual Dom amp Int l 3 SCHEMATIC DIAGRAM MODELS 3240 2 3262 2 3270 2 60 HZ WITH PUSH BUTTON CONTROLS J9L5908Z ZH 09 SSZ ZX YIDNI du VNVIONI 3NAVM 1804 DU SJOMPALJ STJAJSSJPOO J NVJ AVT 18 000 NJAO H3WHOJSNVHL LUX AVIAN AV130 30151534 8
10. ignition control is supplied with 24VAC and the pilot valve and igniter circuits are energized visually check for a pilot flame This may be done by looking through the inspection view port on the end of the burner If no pilot flame is visible check the pilot tube Pilot tube Check for gas pressure at the pilot tube Disconnect pilot tube at the burner And connect manometer to pilot tube If no gas pressure is present during ignition check for blockage of the pilot tube If the pilot tube is clear proceed Pilot orifice If there is gas pressure at the pilot tube check the pilot orifice for blockage or obstructions Replace pilot orifice as needed Check the burner igniter head for any damage or obstructions also check for frayed or broken wire Burner igniter Check spark gap gap should be 3 32 If there is visible damage replace burner igniter on at this time Transformer burner control Check for 208 240VAC supplied to primary of transformer If no voltage is present trace wiring back to the main fan switch If voltage is present check for 24VAC at transformer secondary Low flame is on but no main flame NOTE This is a dual secondary transformer it is important to check BOTH 24VAC outputs If there is primary voltage but no secondary voltage replace burner control transformer Oven control Check for 24VAC supply to oven control If no voltage is present trace wiring back to control transformer If 2
11. in reverse order and check system operation Verify Air Mixture Disc is set to 0 75 3 16 24 14mm TRANSFORMER BURNER CONTROL REPLACEMENT Se OS be Shut off power at main breaker Remove control box cover Disconnect wiring from burner control transformer and mark all wiring for reassembly Remove two mounting screws and remove burner control transformer Reassemble in reverse order and check system operation BURNER CONTROL REPLACEMENT Oe n Shut off power at main breaker Remove control box cover Disconnect wiring from burner control and mark all wiring for reassembly Hemove mounting screws and remove burner control Reassemble in reverse order and check system operation Impinger X2 Digital Service Manual Dom amp Int l AIR PRESSURE SWITCH MAIN FAN MOTOR REPLACEMENT Shut off power at main breaker Remove control box cover Remove cover from air pressure switch Disconnect wiring from air pressure switch and mark all wiring for reassembly Remove air switch tube from air pressure switch Note location of air switch tube tube must be connected to the HIGH port of the air pressure switch Remove mounting screws and remove air pressure switch Reassemble in reverse order Adjust air pressure switch for proper operation see below and check system operation AIR PRESSURE SWITCH MAIN FAN MOTOR ADJUSTMENT 2 3 4 otart the oven After the burner ignites tur
12. oven control If the oven control indicates a temperature reading but the oven will not heat proceed Main gas valve Check to see that the switch on the valve is in the ON position Check for 24VAC supplied to main valve If there is voltage present check to see that valve is opening Connect manometer to pressure tap on outlet side of valve If there is voltage to the valve but no output gas pressure replace the valve Temperature regulation valve Check for 208 240VAC at temperature regulation valve If no voltage is present trace wiring back to electronic temperature control If voltage is present listen for valve to open and close Also check for opens or shorts in the operating coil Replace temperature regulation valve as needed Oven control Check for 3 24VDC from the oven control at terminals J2 6 and J2 9 If there is no output voltage replace oven control If there is output voltage Proceed Modulating valve Check for 3 24VDC at the modulating valve If no voltage is present trace wiring back to the oven control If voltage is present listen for valve to open and close Also check for opens or shorts in the operating coil Replace modulating valve as needed Intermittent heating Thermal Overload of main fan The main fan motor and burner blower motor are and burner blower motors equipped with internal thermal protection and will cease to operate if overheating occurs As the motors over heat and then cool
13. supplies line voltage to the coil of the main fan relay These normally open contacts now close energizing the main fan motor Closing the main power switch also supplies power to the burner and conveyor circuits Closing the main power switch supplies line voltage to the oven control transformer The transformer s secondary supplies 24VAC to the oven control and through the burner blower air pressure switch to the burner control When the burner control is supplied with 24VAC the pilot valve is energized and the igniter circuit is energized Ignition should now occur After the pilot flame is proven the main gas valve is energized Closing the main fan switch supplies line voltage to the oven control transformer The transformer s secondary supplies 24VAC to the oven control The oven control is set to the desired temperature The thermocouple will provide varying millivolts to the oven control The oven control supplies line voltage to the temperature regulation valve at intermittent intervals to maintain desired temperature The display on the oven control will indicate when the temperature regulation valve is energized NOTE The display also indicates oven temperature THE OVEN WILL CONTAIN BETWEEN TWO AND FOUR SEPARATE CONVEYOR DRIVE SYSTEMS THE SEQUENCE OF OPERATIONS WILL BE THE SAME FOR EACH MOTOR SYSTEM Closing the main fan switch supplies line voltage to the conveyor motor and to the primary of the control transformer Secondary voltag
14. 0 Finger housing middle 3240 4 right 3262 3270 Finger housing top 3240 1 left 3262 3270 SIR Caster 5 w brake U 9409 9409 Y Impinger X2 Digital Service Manual Dom amp Int l Impinger X2 Digital Service Manual Dom 8 Intl 25 26 IMPINGER X2 OVENS OVEN CAVITY Guard shaft 3270 4071215 Housing blower e mme E 10001394 Air dam upper 1001024 Clseofupperplemm ae 10002600 Suppor oven cavity 4 100106000 Plate connector SSS 094431 Topcwenideren S G 100293 Coven dered 100110204 Flange thermocouple mount Impinger X2 Digital Service Manual Dom amp Int l Impinger X2 Digital Service Manual Dom amp Intl 27 28 IMPINGER X2 OVENS CONTROL BOX B A S001 iDrive End Lid gt Time Delay Module 230 Volt J 9690368 Thermostat HiLimit K 3609125 X Terminal Block L 39004 9 FrontFacia ControBox o E eng N X 608120 JLoveoyCouping Front Cover 2 oven Front Cover 2TS oven split belt top Front Cover 2SB oven split belt bottom Front Cover 2SS oven split belt top amp bottom P 39008 Transformer230Volis AC a He 80 Hz Mode Only _ lt S 387
15. 0360 Capacitor 230V Digital o U 501070 Air Pressure Switch 390078 Motor main fan 3HP 1 Phase 60 Hz Model Only Y 390096 Motor main fan 3HP 3 Phase 60 Hz Model Only CD n Motor main fan 3HP 3 Phase 50 Hz Model Only 2 Thermocouple type Impinger X2 Digital Service Manual Dom amp Int l Impinger X2 Digital Service Manual Dom amp Intl 29 CAUTION Please note that a model number change associated with the Baldor Main Fan Motor has been instituted This change in motor model number also requires a change in the type of fan belt being used Therefore when replacing a fan belt it is important to note which type of motor is being used Use the following fan belt when using this main fan motor Motor main fan 3HP 1 Phase 60 Hz Model Only Vendor 35V087T356G1 Gates 6929 V Belt 21 32 x 29 Motor main fan 3HP Phase 60 Hz Model Only Vendor 35V426T676G1 Lincoln Part 390128 Motor main fan 3HP 1 Phase 50 Hz Model Only Vendor 35V424Q013G1 Motor main fan 3HP 3 Phase 50 Hz Model Only Vendor 35V426Y886G1 Gates 6931 V Belt 21 32 x 31 Baldor Motor P N M3161TA Lincoln Production 44060274 Lincoln Part 508202EP Baldor Motor P N 35S270T356 Lincoln Production 4060276 Baldor Motors Baldor Motors Baldor Motors M3161TA 35V424Q013G1 35V426T676G1 35S270T356 35V087T356G1 35V426Y886G1 This motor r
16. 38 AV130 40151530 X IN u2123108d 0 0183 0 10 YOASANOI WOl108 YOLOW 80A3ANOJ dOl YOLOW EH 83M018 GINENE YOLOW ZW NYJ NIVW 80109 LW 80A3ANO23 WOLLOG 10819403 YOLOW ZIW 401 1081N02 YOLOW LN MEVdS HILINDI NDI 3WViJ SOSN3S 55 JNI1 431714 VL YOLOW YOAJAND 3514 74 04 VE 1081N03 3514 23 8010N YDAJANOI HO0llJVdVJ 62 0 NJAO 1081802 100107 YINYNG JG NJAO HOLEMS 39155389 UV SdY KYVIV V LE se 10 se re T NE FE 0 0119909 14 02 LS 9c df 01 297 8 id 135 I Nid 038 3162 NOBBIU 981 Ad AN be VJ CN xv REN lt ou YE 38 M dO LOW 25 I Impinger X2 Digital Service Manual Dom amp Intl TROUBLESHOOTING GUIDE DOMESTIC 3240 2 230VAC 60 HZ 1 PHASE 3240 2 230VAC 60 HZ 3 PHASE 3262 2 230VAC 60 HZ 1 PHASE 3262 2 230VAC 60 HZ 3 PHASE 3270 2 230VAC 60 HZ 1 PHASE 3270 2 230VAC 60 HZ 3 PHASE NOTE Model number ending in TS indicates top belt is split belt Model number ending in SB indicates bottom belt is split belt Model number ending in SS indicates both belts are split belts POSSIBLE CAUSE EVALUATION Incoming power supply Check circuit breakers R
17. 4VAC is present check for a read out on the display If there is 24VAC supplied but there is no read out on the display replace oven control If there is a read out on the control set the control to maximum temperature see Installation operations manual for temperature adjustment With the control set at maximum temperature check for 208 240 VAC at the temperature regulation valve If there is voltage at the temperature regulation valve proceed to Temperature regulation valve for next check If there is no voltage at the temperature regulation valve trace wiring back to the oven control If there is no voltage output at the oven control check the read out on the oven control If the control reads PROBE FAIL this indicates that the thermocouple has failed or become disconnected from the oven control Thermocouple probe Check to be sure that the thermocouple is securely connected to the oven control If the thermocouple is connected to the oven control and the control indicates PROBE FAIL disconnect the thermocouple from the oven control and measure the resistance of the thermocouple The thermocouple should read approx 116 If these readings are not achieved replace the thermocouple If these readings are correct proceed Oven control If the thermocouple checks good but the oven control display indicates that there is a thermocouple failure 8 Impinger X2 Digital Service Manual Dom amp Intl replace the
18. SERVIGE MANUAL DOMESTIC amp INTERNATIONAL IMPINGER X2 OVENS WITH PUSH BUTTON CONTROLS MODEL 3240 2 3262 2 3270 2 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 Intl Fax 260 436 0735 Technical Service Hot Line 800 678 951 1 www lincolnfp com JE M En ST CERTIFIED SERVICE AND PARTS X2digservman REV 1 22 07 SEQUENCE OF OPERATION IMPINGER X2 OVENS DOMESTIC WITH PUSH BUTTON CONTROLS 3240 2 230VAC 60 HZ 1 PHASE 3240 2 230VAC 60 HZ 3 PHASE 3262 2 230VAC 60 HZ 1 PHASE 3262 2 230VAC 60 HZ 3 PHASE 3270 2 230VAC 60 HZ 1 PHASE 3270 2 230VAC 60 HZ 3 PHASE NOTE Model number ending in TS indicates top belt is split belt Model number ending in SB indicates bottom belt is split belt Model number ending in SS indicates both belts are split belts POWER SUPPLY Electrical power to be supplied to the oven by a three conductor service for single phase or a four conductor service for three phase Black conductor is hot Red conductor is hot Orange conductor is hot Green conductor is ground Power is permanently supplied to the normally open contacts of the main fan relay Power is also supplied through a 3 amp fuse to the 30 minute time delay relay Closing the oven power switch enables the 30 minute time delay relay The 30 minute time delay relay
19. TH PUSH BUTTON CONTROLS 640000 AR VNVIGNI 3NAVM 18034 DU STIAISSJPON J QT OL S3GIM ONNOYD TIV NO HJLI MS GIMOd NJAO OSTES HILIMS 9NISH3A3S 0381530 319901 440 HILIMS 43MOd NJAO NYNL NOILJ3NIC 80A3ANO2 3S83A38 01 310N T3 1741 ge NO DER ar r d MS did eu ow beet LMS 440 La HERR A 19 27 Zf NOILISOd 834083 DUE Wr EC 8043ANOJ LNOYS WOLLOd EON NO MS did 135 Ldf df G Z NOlLISOd 834088 OL df amp bdr 135 80AJANOJ MIVE WOLLOG TW Z 111909 534059 5 er 01 247 8 bdr 135 g er 9 27 ECO S Z 111509 83908 80A3AN02 XIVE 401 EM 1NONJ dOL LIN 1041403 N3AO HIWNGDASNVEL LAX 10719 SATIVA NIVW SATIVA EA JJ0 NO ZA NOILVINGOW 3A1VA LA LIWII HOIH IVISOWE3HI LL 134 AVT3O MII 04 3ldf020HWB3HL 4211131 NnOND 3018 TYNINGIL 81 81MOd YOLOW 80A3ANOJ 32018 TIVNIWH3I 181 13838 YINYNE HOLIMS LS 9 1 43 38 YDAIJAND LOG HILIMS 5 DNISHJA3H dOl HJINMS ES janss3dd 831 XINING HILIMS ZS d3MOd NJAO HILIMS LS AYTAY LU 1
20. als 1 and 3 If no voltage is present trace wiring back to fuse holder If there is supply voltage at terminals 1 and 8 check for output voltage at terminals 2 and 8 If there is incoming voltage but no output voltage and the main power switch is on replace the 30 minute time delay relay Check for supply voltage to relay contacts if no voltage is present trace wiring back to power supply Check for supply voltage to the coil of the main fan relay If no voltage is present trace wiring back to the 30 minute time delay relay check to be sure that the Overload Protector contacts are closed If contacts are open see Overload Protector below If voltage is present check to insure relay contacts are closing Replace relay as needed Check to be sure overload contacts are closed If not closed re set overload If contacts do not close replace overload protector If contacts close test for proper operation If the overload contacts do not stay closed and the amperage is below the overload setting replace the overload protector 3240 should be set at 13A 3262 should be set at 18A 3270 should be set at 18A Check for supply voltage at motor If no voltage is present trace wiring back to the overload protector WITH POWER OFF Check for opens shorts or grounds Turn motor shaft to check for locked rotor Check for shorts or grounds WARNING Capacitor has a stored charge discharge before testing Check for loose or bro
21. b Program Menu pressing the TIME button will access the time features HI TIME and LOW TIME These are not normally changed unless requested by the customer Accessing these displays and pressing the UP or DOWN buttons will change each indicated setting accordingly Impinger X2 Digital Service Manual Dom amp Int l 6 Each conveyor motor will have a unique address on every Motor Controller PCB Top Belt or Top Front Belt Dip Switch 1 will be ON 2 3 and 4 are OFF Top Back Belt Dip Switch 2 will be ON and 1 3 and 4 are OFF Bottom Belt or Bottom Front Belt Dip Switch 3 will be ON and 1 2 and 4 are OFF Bottom Back Belt Dip Switch 4 will be ON and 1 2 and 3 are OFF TOP BELT or TOP BACK BELT TOP FRONT BELT BOTTOM BELT or BOTTOM BACK BOTTOM FRONT CONVEYOR CONTROL REPLACEMENT Shut off power at main breaker Hemove control box cover Remove wiring from appropriate conveyor control and mark all wiring for reassembly Remove conveyor control by pulling control from the mounting pins Remove control from oven Heassemble in reverse order and set the new control for the proper operating mode See OVEN CONTROL PROGRAMMING Test system for proper operation OT DEO e Impinger X2 Digital Service Manual Dom amp Intl 23 24 IMPINGER X2 OVENS GENERAL VIEW LETTER A Finger housing bottom 3240 6 right 3262 3270 Finger housing middle 3240 3 left 3262 327
22. e 24VAC is supplied to he oven control Setting the oven control to the desired time outputs voltage through a reversing switch to the conveyor motor NOTE The conveyor control uses a hall effect sensor and magnet to prove operation of the conveyor motor If the conveyor motor is not running BELT JAM is indicated on the display When the oven is started the 30 minute time delay relay is enabled permitting the oven fan to operate for approximately 30 minutes after the oven is shut off to cool the oven When the oven is shut off the 30 minute time delay relay will keep the coil of the main fan relay closed for 30 minutes maintaining operation of the main fan motor MAIN FAN CIRCUIT BURNER CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE AUTOMATIC COOL DOWN 2 Impinger X2 Digital Service Manual Dom amp Int l SEQUENCE OF OPERATION IMPINGER X2 OVENS INTERNATIONAL WITH PUSH BUTTON CONTROLS 3240 2 230VAC 50 HZ 1 PHASE 3262 2 230VAC 50 HZ 1 PHASE 3270 2 230VAC 50 HZ 1 PHASE NOTE Model number ending in TS indicates top belt is split belt Model number ending in SB indicates bottom belt is split belt Model number ending in SS indicates both belts are split belts POWER SUPPLY Electrical power to be supplied to the oven by a three conductor service for single phase or a four conductor service for three phase Black conductor is hot Red conductor is hot Orange conductor is hot Green conductor is grou
23. eded Conveyor motor Check for 208 240VAC supplied to the motor I no voltage is present trace wiring back to the reversing switch If voltage is present check motor windings for opens or shorts Impinger X2 Digital Service Manual Dom amp Int l 9 WITH POWER OFF Check the motor windings as follows Grey to Black 114 ohm approx Grey to Brown 114 ohm approx Brown to Black 228 ohm approx If any of the above fail replace motor Capacitor conveyor motor Check for shorts or grounds Replace capacitor as needed WARNING Capacitor has a stored charge discharge before testing Conveyor Check for any mechanical problems in the conveyor assembly Check for damaged or torn belting Check conveyor shaft bearings for damage or excessive wear Repair or replace conveyor components as needed Oven control If there is voltage supplied to the motor and the motor capacitor and reversing switch check good replace the oven control Conveyor motor runs but there NOTE Display will indicate is no Speed display STALL Oven control Check output voltage from oven control to hall effect sensor sensor is located in conveyor motor Measure voltage at the motor connector red wire and yellow wire Voltage should be approx 10VDC If no voltage is present trace wiring back to the oven control If there is no voltage output present at the oven control replace the oven control Motor conveyor If there
24. equires the This motor requires the This motor requires the following fan belt following fan belt following fan belt Lincoln Part 4 508202EP Lincoln Part 390128 Lincoln Part 390128 Dimensions 21 32 x 31 Dimensions 21 32 x 29 Dimensions 21 32 x 29 30 Impinger X2 Digital Service Manual Dom amp Int l IMPINGER X2 OVENS DOOR ASSEMBLY Sandwich Door Assembly Single Handle Sandwich Door Assembly Double Handle Old Style Door w Single Sandwich Door Old Style Single Sandwich Door Door Solid Sandwich Door Assembly Double Handle Impinger X2 Digital Service Manual Dom amp Int l 31 32 IMPINGER X2 OVENS BURNER DRIVE END PART NUMBER AL 39104 9 Flngebume ni E singe eng Bearing drive end TS D OR Flame target used on 60 Hz model only re EE ao Shield plot ae 390114 Shield pilot TTT SEE MEE uU Orifice Pilot L 3 E Hz Model ory P 36940 Moveable plate air shutter Q 1 9S6999 Impinger X2 Digital Service Manual Dom amp Int l Impinger X2 Digital Service Manual Dom amp Intl 33 34 IMPINGER X2 OVENS CONVEYOR SINGLE LETTER El
25. eset if required Call power co if needed Fuse 3 Amp control Check replace if necessary SYMPTOM Oven fan will not run Fuse holder Check replace if necessary Check continuity between switch terminals Replace switch as needed Check for supply voltage to 30 minute time delay relay at terminals 1 and 3 If no voltage is present trace wiring back to main power switch If there is Supply voltage at terminals 1 and 8 check for output voltage at terminals 2 and 3 If there is incoming voltage but no output voltage and the main power switch is on replace the 30 minute time delay relay Check for supply voltage to relay contacts if no voltage is present trace wiring back to power supply Check for 208 240VAC to the coil of the main fan relay If no voltage is present trace wiring back to the 30 minute time delay relay check to be sure that the Overload Protector contacts are closed If contacts are open see Overload Protector below If voltage is present check to insure relay contacts are closing Replace relay as needed Check to be sure overload contacts are closed If not closed re set overload If contacts do not close replace overload protector If contacts close test for proper operation If the overload contacts do not stay closed and the amperage is below the overload setting replace the overload protector 3240 should be set at 13A 3262 should be set at 18A 3270 should be set at 18A Main fan motor
26. ge is present trace wiring back to the burner control transformer This normally open switch should close when the burner blower motor is activated Check air switch tube for blockage or any obstructions repair as needed Refer to the Removal and installation section for proper adjustment of air pressure switch Replace air pressure switch as needed Burner control Check for 24VAC supply to the ignition control If no voltage is present trace wiring back to centrifugal switch of burner blower motor If voltage is present check for 24VAC at pin 3 and ground pilot valve NOTE The Honeywell ignition control has a 30 second pre purge time delay built in If voltage is not present replace ignition control If the pilot valve is energized check to see that the high voltage igniter circuit is also energized To check turn power off disconnect the igniter lead from the ignition control Turn power on If no spark is visible replace burner control If a spark is visible at burner control proceed Check for 24VAC supplied to pilot valve If no voltage is Impinger X2 Digital Service Manual Dom amp Int l 7 present trace wiring back to burner control If voltage is present check for gas pressure at the pilot line connection If no gas pressure is present during ignition check for any blockage in the assembly If there are no obstructions and there is gas supplied to the oven replace the gas valve No pilot flame If the
27. ion Check for supply voltage to main valve If there is voltage present check to see that valve is opening Connect manometer to pressure tap on outlet side of valve If there is voltage to the valve but no output gas pressure replace the valve Temperature regulation valve Check for supply voltage at temperature regulation valve If no voltage is present trace wiring back to electronic temperature control If voltage is present listen for valve to open and close Also check for opens or shorts in the operating coil Replace temperature regulation valve as needed Oven control Check for 3 24VDC from the oven control at terminals J2 6 and J2 9 If there is no output voltage replace oven control If there is output voltage Proceed Modulating valve Check for 3 24VDC at the modulating valve If no voltage is present trace wiring back to the oven control If voltage is present listen for valve to open and close Also check for opens or shorts in the operating coil Replace modulating valve as needed Intermittent heating Thermal Overload of main fan The main fan motor and burner blower motor are and burner blower motors equipped with internal thermal protection and will cease to operate if overheating occurs As the motors over heat and then cool this will cause the units to cycle on and off intermittently Improper ventilation or lack of preventive maintenance may cause this Also most of the problems listed under Oven
28. is voltage supplied to the hall effect sensor check for a frequency output from the hall effect sensor Measure frequency across the yellow and white wires at the motor connector Frequency readings should be between 15 Hz 500 Hz If these readings are not achieved replace conveyor motor If these readings are achieved proceed Oven control If the hall effect sensor readings are correct but there is no speed indicated on the display replace the control 10 Impinger X2 Digital Service Manual Dom amp Int l TROUBLESHOOTING GUIDE INTERNATIONAL 3240 2 230VAC 3262 2 230VAC 3270 2 230VAC NOTE 50 HZ 1 PHASE 50 HZ 1 PHASE 50 HZ 1 PHASE Model number ending in TS indicates top belt is split belt Model number ending in SB indicates bottom belt is split belt Model number ending in SS indicates both belts are split belts SYMPTOM Oven fan will not run Switch oven fan 30 minute time delay relay Relay main fan Overload protector main fan Drive belt Bearings Fan shaft Oven will not heat Impinger X2 Digital Service Manual Dom amp Int l POSSIBLE CAUSE EVALUATION Incoming power supply Check circuit breakers Reset if required Call power co if needed Fuse 3 Amp control Check replace if necessary Fuse holder Check replace if necessary Check continuity between switch terminals Replace switch as needed Check for supply voltage to 30 minute time delay relay at termin
29. ken drive belt Adjust motor for proper belt tension maximum of 3 8 inch deflection or replace drive belt as needed Check for any damage or excessive wear on the shaft bearings Replace bearings as needed Gas supply Check for adequate gas supply to oven Manual gas shut off valve Check to see that the manual gas shut off valve is open Also check flexible gas line connection for any 11 damage Main fan motor Check for main fan operation If it is not operating refer to Oven fan will not run Relay main fan Check for supply voltage to relay terminal 13 If voltage is not present trace wiring back to power supply If voltage is present check for supply voltage at terminal 14 If there is no voltage at terminal 14 and the relay is energized replace the main fan relay Air pressure switch Main fan Check for supply voltage to the air pressure switch If motor no voltage is present trace wiring back to main fan switch This normally open switch should close when the main fan is activated Check air switch tube for blockage or any obstructions repair as needed Refer to the Removal and installation section for proper adjustment of air pressure switch Replace air pressure switch as needed Hi limit thermostat oven cavity Terminals are normally closed If open reset thermostat and retest If thermostat will not hold for maximum oven temperature and oven is not exceeding temperature setting check for
30. l effect sensor readings are correct but there is no speed indicated on the display replace the control Impinger X2 Digital Service Manual Dom amp Int l 15 REMOVAL INSTALLATION amp ADJUSTMENTS IMPINGER X2 SERIES OVENS CAUTION BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE IMPINGER X2 OVEN BE SURE TO DISCONNECT ELECTRICAL POWER AND GAS SUPPLY MOTOR MAIN FAN REPLACEMENT Shut off power at main breaker Hemove control box cover and control box rear cover Disconnect motor wiring and mark all wiring for reassembly Remove V belt by loosening the four bolts on the motor mount plate and the two belt tensioning bolts Hemove motor and motor mount assembly Remove motor from motor mount Remove pulley from motor and install pulley on new motor Reassemble in reverse order and check system operation Be sure to check for proper tension on drive belt Adjust tension bolts until there is no more than 3 8 inch deflection at the halfway point between the motor pulley and the driven pulley Gn po e SHAFT AND BLOWER WHEEL REPLACEMENT Shut off power at main breaker Remove cover panels form both sides Remove back Unbolt blower housings Remove thermocouple from mou Remove flanges from blower housing mark position of flange for replacement po Ur Ius 7 Unbolt air return panels from inside top 8 Remove sheet metal from plenum 16 Impinger X2 Digital Service Manual Dom
31. limit thermostat and mark all wiring for reassembly Remove oven back assy Remove capillary tube from mounting bracket Remove mounting nut and remove hi limit thermostat from oven Reassemble in reverse order and check system operation NOTE Depress reset button to insure thermostat is set for operation TEMPERATURE REGULATION VALVE REPLACEMENT pep I Shut off power at main breaker Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven Remove control box cover Disconnect all wiring from the temperature regulation valve modulating gas valve and the main gas valve Mark all wiring for reassembly Impinger X2 Digital Service Manual Dom amp Int l 19 20 Remove pilot tube from gas valve Disconnect pipe union at the burner and at the inlet side of the main gas valve Loosen pipe clamp and remove valves and piping assembly Remove piping from old valve and reassemble in reverse order Check all gas line fittings for leaks and check system operation GAS VALVE REPLACEMENT pe e Shut off power at main breaker Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven Hemove control box cover Disconnect all wiring from the temperature regulation valve modulating gas valve and the main gas valve Mark all wiring for reassembly Remove pilot tube from gas valve Disconnect pipe unions at the burner and at the inlet side of the main gas val
32. low for set up procedure P OVEN CONTROL PROGRAMMING NOTES All bake times should be within 10 seconds of set bake time cavity temperature should be calibrated to within 5 of set temperature For temperature calibration allow oven temperature to stabilize for at minimum 30 minutes Before checking conveyor speed allow conveyor to run for 10 minutes 1 BEFORE APPLYING POWER TO OVEN ENSURE PROPER VOLTAGE JUMPER SETTING FOR 120V or 240V AND THAT THE 50HZ 60HZ JUMPER SETTING IS CORRECT JUMPERS ARE LOCATED ON CONVEYOR CONTROL BOARDS E Hz 60 Hz LINE FREQUENCY 50Hz JUMPER JP2 LEFT TWO POSITIONS jP1 MOTOR 60Hz JUMPER JP2 RIGHT TWO POSITIONS 120VAC JUMPER JP1 TOP TWO POSITIONS 240VAC JUMPER JP1 BOTTOM TWO POSITIONS Impinger X2 Digital Service Manual Dom amp Int l 21 22 To initialize a new control hold the two center buttons in then turn unit on Ki Helease buttons A B C Select the correct oven model number e g 3240 3262 or 3270 by toggling the UP or DOWN buttons When correct model is selected press the TEMP button to store Select the proper belt configuration for this oven by toggling the UP or DOWN buttons Press the TEMP button to store Allow control sufficient time to update programming Shut off main fan switch Initialization of control is now complete Set digital control for proper temperature scale F or C E iu L L A
33. n the air pressure switch adjustment screw Clockwise until the burner shuts off Turn the adjustment screw Counterclockwise until the burner ignites plus one full turn oeal adjustment screw with nail polish Replace cover on air pressure switch AIR PRESSURE SWITCH BURNER MOTOR REPLACEMENT Oh Se 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 hangar Install new switch in reverse order make sure air tube is not blocked or misaligned Adjust as needed AIR PRESSURE SWITCH BURNER MOTOR ADJUSTMENT To adjust the air pressure 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 THERMOCOUPLE REPLACEMENT 5 Shut off power at main breaker Remove control box cover Disconnect thermocouple from oven control Note wire colors for reassembly Hemove oven back assy Remove thermocouple from mounting flange in blower housing Remove thermocouple from oven Reassemble in reverse order and check system operation THERMOSTAT HI LIMIT REPLACEMENT PD Dres SOS ROR gt Shut off power at main breaker Remove control box cover Disconnect all wiring from hi
34. nd MAIN FAN CIRCUIT Power is permanently supplied to the normally open contacts of the main fan relay Power is also supplied through a 3 amp fuse to the 30 minute time delay relay Closing the oven power switch enables the 30 minute time delay relay The 30 minute time delay relay supplies line voltage to the coil of the main fan relay These normally open contacts now close energizing the main fan motor Closing the main power switch also supplies power to the burner and conveyor circuits BURNER CIRCUIT Closing the oven power switch supplies line voltage through the air pressure switch and through the oven cavity hi limit thermostat to the burner control The burner control supplies line voltage to the burner blower motor The normally open air pressure switch closes upon sensing air pressure The spark and pilot valve are now energized Ignition should now occur After the pilot flame is proven the main gas valve is energized TEMPERATURE CONTROL Closing the main fan switch supplies line voltage through a filter to the oven control transformer The transformer s secondary supplies 24VAC to the oven control The oven control is set to the desired temperature The thermocouple will provide varying millivolts to the oven control The oven control supplies line voltage to the temperature regulation valve at intermittent intervals to maintain desired temperature The display on the oven control will indicate when the temperature regulation valve is
35. ndings as follows Grey to Black 114 ohm approx Grey to Brown 114 ohm approx Brown to Black 228 ohm approx If any of the above fail replace motor Capacitor conveyor motor Check for shorts or grounds Replace capacitor as needed WARNING Capacitor has a stored charge discharge before testing Conveyor Check for any mechanical problems in the conveyor assembly Check for damaged or torn belting Check conveyor shaft bearings for damage or excessive wear Hepair or replace conveyor components as needed Oven control If there is voltage supplied to the motor and the motor BEEN capacitor and reversing switch check good replace the oven control Fic is no speed display STALL Oven control Check output voltage from oven control to hall effect sensor sensor is located in conveyor motor Measure voltage at the motor connector red wire and yellow wire Voltage should be approx 10VDC If no voltage is present trace wiring back to the oven control If there is no voltage output present at the oven control replace the oven control Motor conveyor If there is voltage supplied to the hall effect sensor check for a frequency output from the hall effect sensor Measure frequency across the yellow and white wires at the motor connector Frequency readings should be between 15 Hz 500 Hz If these readings are not achieved replace conveyor motor If these readings are achieved proceed Oven control If the hal
36. nect all wiring from relay and mark all wiring for reassembly Remove main relay and overload protector Remove overload protector from main relay and mount overload protector on new relay Reassemble in reverse order and check system for proper operation TIMER 30 MINUTE COOL DOWN REPLAGEMENT SE Shut off power at main breaker Remove control box cover Disconnect all wiring from 30 minute cool down timer and mark all wires for reassembly Remove one mounting bolt and remove 30 minute cool down timer Reassemble in reverse order and check system operation FUSE HOLDER REPLACEMENT Een Shut off power at main breaker Remove control box cover Disconnect wiring from fuse holder and mark all wiring for reassembly Hemove mounting nut from fuse holder and remove fuse holder Reassemble in reverse order and check system operation SWITCH ON OFF REPLACEMENT Ne Shut off power at main breaker Remove control box cover Disconnect wiring from switch and mark all wiring for reassembly Remove switch by depressing spring clips on sides of switch Push switch out Reassemble in reverse order and check system operation MOTOR BURNER BLOWER REPLACEMENT Shut off power at main breaker Remove control box cover and front control box cover Disconnect wiring from motor Mark all wiring for reassembly Remove three mounting screws and remove burner blower motor assembly Reassemble
37. ng back to main fan switch This normally open switch should close when the main fan is activated Check air switch tube for blockage or any obstructions repair as needed Refer to the Removal and installation section for proper adjustment of air pressure switch Replace air pressure switch as needed Hi limit thermostat oven cavity Terminals are normally closed If open reset thermostat and retest If thermostat will not hold for maximum oven temperature and oven is not exceeding temperature setting check for proper location of capillary bulb in its spring holder If the capillary checks okay replace the hi limit thermostat Transformer burner control Check for 208 240VAC supplied to primary of transformer If no voltage is present trace wiring back to the main fan switch If voltage is present check for 24VAC at transformer secondary NOTE This is a dual secondary transformer it is important to check BOTH 24VAC outputs If there is primary voltage but no secondary voltage replace burner control transformer KE Motor burner blower Check for 208 240 VAC supplied to the burner blower motor If no voltage is present trace wiring back to the hi limit thermostat If voltage is present and the motor is not turning check for opens shorts or grounds WITH POWER OFF Check for locked rotor Replace burner blower motor as needed Air pressure switch burner Check for 24VAC to the air pressure switch If no blower motor volta
38. or blockage or obstructions Replace pilot orifice as needed To check flame sensor operation connect a digital multimeter capable of measuring D C Microamps between the flame sensor wire and the flame sensor connection on the ignition control terminal 3 Flame sensor current is to be 0 7 microamp minimum If these readings are not achieved replace igniter sensor assembly Also check for any type of damage to flame sensor wire and connections NOTE The D C microamp test must be conducted with the oven in low flame operation oet the temperature to the lowest temperature setting If there is sufficient microamp current but the flame will not stay lit check for proper polarity of the power supply If there is sufficient microamp current and there is proper polarity of the power supply but the burner will not stay lit check the reset button for the burner control If the above test is okay replace the burner control Check for supply voltage to primary of control transformer If no voltage is present trace wiring back to the main fan switch If voltage is present check for 24VAC at transformer secondary If there is primary voltage but no secondary voltage replace burner control transformer Check for 24VAC supply to oven control If no voltage is present trace wiring back to control transformer If 24VAC is present check for a read out on the display If there is 24VAC supplied but there is no read out on the
39. proper location of capillary bulb in its spring holder If the capillary checks okay replace the hi limit thermostat Burner control Check for supply voltage to burner control at terminal 1 and Neutral If no voltage is present trace wiring back to hi limit thermostat If voltage is present check for supply voltage to burner blower motor at terminal 8 and neutral If no voltage is present wait thirty seconds reset burner control and re try If the above fails replace burner control Burner reset switch owitch is normally open check to see that the switch closes when reset button is pushed Replace switch as needed Motor burner blower Check for supply voltage to the burner blower motor If no voltage is present trace wiring back to the burner control If voltage is present and the motor is not turning check for opens shorts or grounds WITH POWER OFF Check for locked rotor Replace burner blower motor as needed Air pressure switch burner Check for air pressure switch to be switching from NC blower motor to NO Check for air tube blockage or misalignment Heplace air pressure switch as needed Burner control A pre purge time of 30 60 seconds occurs after burner blower motor starts Check for high voltage spark output from the burner control If there is no high voltage spark output check reset button for the burner control If there is still no high voltage output replace the burner control Igniter senso
40. r assembly Check for visible damage to the igniter sensor assembly If there is visible damage replace components as needed If there is no visible damage to the components and there is no spark replace the igniter sensor assembly Also check for damaged wires in the burner tube Replace components as needed Burner control Gas valve should open as the burner control generates the high voltage spark Check for supply voltage to pilot valve at terminal 5 and neutral If no voltage is present check reset button for the burner control If there is still no voltage the pilot valve replace burner control is present trace wiring back to the burner control If 12 Impinger X2 Digital Service Manual Dom amp Int l B Flame sensor Flame will not stay on Power supply MEM NOTE Flame should on at this time Transformer control Low flame is on but no main flame Impinger X2 Digital Service Manual Dom amp Intl Oven control Thermocouple probe there is voltage connect a manometer to the pressure tap fitting on the gas valve If there is voltage to the pilot valve but there is no gas pressure replace gas valve Check for gas pressure at pilot tube Disconnect pilot tube at burner and connect manometer If there is no gas pressure check for blockage in pilot tube Repair or replace tube as needed If there is gas pressure at the pilot tube check the pilot orifice f
41. r assembly from burner housing Remove pilot tube pilot shield and pilot orifice from spark igniter and remove spark igniter Reassemble in reverse order and check system operation OD H CONVEYOR MOTOR REPLACEMENT Shut off power at main breaker Remove control box cover and front control box cover Disconnect wiring from the conveyor motor assembly and mark all wiring for reassembly Remove four screws and remove conveyor motor assembly Reassemble in reverse order and check system operation o Tos CAPACITOR CONVEYOR MOTOR REPLACEMENT Shut off power at main breaker Remove control box cover Discharge capacitor Remove mounting screw and replace capacitor Reassemble in reverse order and check system operation DU UIT REVERSING SWITCH REPLACEMENT Shut off power at main breaker Remove control box cover Remove reversing switch cover Disconnect wiring from reversing switch and mark all wiring for reassembly Remove mounting nut from reversing switch and remove reversing switch Reassemble in reverse order and check system operation CI ex eu Dur cor OVEN CONTROL REPLACEMENT Shut off power at main breaker Remove control box cover Remove all wiring connections from the oven control and mark all wires for reassembly Remove oven control by pulling control from the mounting pins Remove control from oven Reassemble in reverse order and set the new control for the proper operating mode See be
42. st time using the UP or DOWN buttons Pressing TIME or TEMP button will show the respective setting Once desired settings are programmed allow control to go into normal running mode While in this mode continue to press the TIME button to toggle between different conveyors Adjust temperature offset Sub Program Menu L L A Follow the instructions in Step 3 to enter the Sub level program After Sub Program Menu is displayed pressing the TEMP button will access the following temperature features SCALE F or C HI TEMP LOW TEMP OFFSET or MANUFACTURE MODE Inactive or Active e DO NOT change SCALE after it has been set in step 3A or settings will reset to default values To adjust the temperature offset access the OFFSET display in the Sub Program Menu If cavity temperature is above the set temperature decrease down button the offset value If cavity temperature is below the set temperature increase up button the offset value The amount of offset needed should be the difference between the cavity temperature and the set temperature Allow oven to reach set temperature and verify cavity temperature Readjust offset as necessary HI TEMP and LOW TEMP are not normally changed unless requested by the customer Accessing these displays and pressing the UP or DOWN buttons will change each indicated setting accordingly MANUFACTURE MODE is not normally used therefore this feature should be set to clear While in the Su
43. ve Loosen pipe clamp and remove valves and piping assembly Remove piping from old valve and reassemble in reverse order Check all gas line fittings for leaks and adjust manifold pressure on gas valve Refer to the specification plate on the oven for proper gas manifold pressure Check system operation MODULATING GAS VALVE REPLACEMENT aeui ER e Shut off power at main breaker Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven Remove control box cover Disconnect all wiring from the temperature regulation valve modulating gas valve and the main gas valve Mark all wiring for reassembly Remove pilot tube from gas valve Disconnect pipe unions at the burner and at the inlet side of the main gas valve Loosen pipe clamp and remove valves and piping assembly Remove piping from old valve and reassemble in reverse order Check all gas line fittings for leaks and adjust manifold pressure on gas valve Refer to the specification plate on the oven for proper gas manifold pressure Check system operation MAIN BURNER ORIFICE REPLACEMENT icd dum pou DEN Shut off power at main breaker Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven Remove control box cover and control box front cover Remove pilot tube from gas valve Disconnect pipe union at burner loosen pipe union at inlet to gas valve loosen pipe clamp and move piping away from burner
44. will not heat can cause intermittent failure Conveyor will not run NOTE The ovens may contain two three or four conveyor drive systems using like components The trouble shooting sequence will be the same for each of the conveyor drive systems Power supply Check circuit breakers reset if required Check power plug to be sure it is firmly in receptacle Measure incoming power call power co if needed owitch oven power Check continuity between switch terminals Replace switch as needed Relay main fan Check for supply voltage to relay terminal 13 If voltage is not present trace wiring back to power supply If voltage is present check for supply voltage at terminal 14 If there is no voltage at terminal 14 and the relay is energized replace the main fan relay p Transformer control Check for supply voltage to primary of transformer If no voltage is present trace wiring back to the main fan switch If voltage is present check for 24VAC at transformer secondary If there is primary voltage but no secondary voltage replace burner control transformer owitch conveyor reversing Check for continuity between switch terminals Replace switch as needed Check for supply voltage to the motor If no voltage is 14 Impinger X2 Digital Service Manual Dom amp Int l present trace wiring back to the reversing switch If voltage is present check motor windings for opens or WITH POWER OFF Check the motor wi

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