Lincoln 3262-2 Convection Oven User Manual
Contents
1. 6 TRANSFORMER BURNER REPLACEMENT Shut off power at main breaker Remove control box cover and front control box cover Hemove box cover from burner blower motor Disconnect wiring from burner transformer and mark all wiring for reassembly Remove two mounting screws and remove burner transformer Reassemble in reverse order and check system operation Oh Tees RELAY BURNER BLOWER REPLACEMENT Shut off power at main breaker Remove control box cover and front control box cover Remove box cover from burner blower motor Impinger X2 Analog Service Manual Dom amp Int l 1 2 3 18 4 Disconnect wiring from burner blower relay and mark all wiring for reassembly o Remove two mounting screws and remove burner blower relay 6 Reassemble in reverse order and check system operation BURNER CONTROL REPLACEMENT 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 ani oe AIR PRESSURE SWITCH REPLACEMENT Shut off power at main breaker 2 Remove control box cover and rear control box cover 3 Remove cover from air pressure switch Disconnect wiring from air pressure switch and mark all wiring for reassembly 4 Remove air switch tube from air pressure switch Note location of air switch tube tube must2. If voltage is not present proceed Thermocouple probe WITH POWER ON AND THERMOCOUPLE LEADS ATTACHED TO THE ELECTRONIC TEMPERATURE CONTROL Measure the D C millivolt output of these leads Refer to chart in the Removal Installation and Adjustment section for proper readings If these readings are not achieved replace thermocouple Burner control Check for supply voltage to main valve If no voltage is present trace wiring back to burner control If there is no voltage output replace burner control Main gas valve 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 If supply voltage is present on the electronic temperature control terminal 13 to neutral check for voltage at temperature regulation valve If no voltage is present trace wiring back to electronic temperature control terminal 20 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 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 thi
3. WITH POWER ON AND THERMOCOUPLE LEADS leads Refer to chart in the Removal Installation and Burner control Check for 24VAC supplied to main valve If no voltage is present trace wiring back to burner control If there is no voltage output replace burner control 8 Temperature regulation valve If 120VAC is present on the electronic temperature control terminal 13 to neutral check for 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 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 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 re
4. X2 Analog Service Manual Dom amp Int l Mota t T 9 pop N ZEE en SD C GXD 1 101100 35VHd ERM N3AO0 SASVHd 334HL 03 N3AO 3SVHd 23 191115 403 9 N E1 Z21 SLT OL ATddNS 3 9 SN ZI LT OL ATddNS 193NN09 MODEL 3240 2 3262 2 3270 2 60 HZ SCHEMATIC DIAGRAM 8 8 8 8 8 68 Impinger X2 Analog Service Manual Dom amp Int l 13538 HOLING 25 VADO WINING ond ANA MI NA FOLIE SE MOSHE NAIVE BLA AR P ABANOD ER 9 z SN3AO SSC i s 9 s MOLLY em GL SAWA TA Koranen r OLING ES CARE atta YJ NIdWI ZX ZH OS alt SALNIK OG AVAGY ABO GIL 7 OL IDLING 25 po aan SINT alg Jan md rm wh ae H Lo T S i NO TOMLNOD MOASANOO NUNI Cu woaaanog oud ide MALING LIS vagy AVD Sat d DASAN 108 INOS V2 1 5 99 NOLLIBOd DXGN Oi HOLIMG ONIGHSASH 03015323 1 YOAJANOJ XOYd 108 HOLIAS 015 NYS 111 20013210000 8800 70 WOA3ANOO dOL TOVINDD 200 430 QMINOO YOAZANGI NUNL NOLIOGMIQ 001300 JGUBATY OL ALON XXE TA MED Er ETUR Gale ONISUJAJY BOAZANOO INOS dOl HOLIAS 85 HOABANDO 108 HOLON SH SH ONLACO SEND 2d SNIONNONS NISSAN 001300000 XOYd 201 HOLIMS 80134000 dOL BOLO N EN BANNING HEV Y MODEL 3240 2 3262 2 3270 2 50 HZ ct an 2 ZIDED mm rU SCHEM
5. 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 3260 should be set at 18A 3270 should be set at 18A 120VAC 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 Main fan motor 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 Impinger X2 Analog Service Manual Dom amp Int l bearings Replace bearings as needed 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
6. for any damage Check for main fan operation If it is not operating refer to Oven fan will not run Check for 120VAC supplied to relay terminal 13 If voltage is not present trace wiring back to power Relay main fan 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 Fuse 2 Amp control F8 owitch oven fan Check for 120VAC to the switch if no voltage is present trace wiring back to the main fan relay Check continuity between switch terminals Replace switch as needed Switch burner Check for 120VAC to the switch if no voltage is present trace wiring back to the oven fan switch Check continuity between switch terminals Replace switch as needed Air pressure switch Check for 120VAC to the air pressure switch If no voltage is present trace wiring back to burner 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 Transformer burner Check for 120VAC supplied to primary of transformer If no voltage is present trace wiring back to the air pressure switch If voltage is present check for 24VAC at transformer secondary If there is primary voltage but no secondary voltage repl
7. oven split belt top 100501326 Front cover 2SB oven split belt bottom 100501325 Front cover 255 oven split belt top and bottom Conveyor drive motor D 5011106P 9 JjHalleffeetsenso F HA l 390069 V belt 3240 3262 3270 50Hz BK 45 x 7 8 1 390059 Puley motor 3240 3262 3270 50 Hz 14060274 Motor main fan 60 Hz 3 phase sd i 4060275 Motor main fan 50 Hz 1 phase 501070EP Air pressure switch 369575 Air pressure switch CE ovens Cd 370396 Ignition control 50 Hz ovens O Z sw 390068 Relay overload 3262 3270 _ O 00 i i 370466 Cool down timer 230V AC sd 1 4000214 Terminal block 5 pole CdS P 100501232 Cover rear 9004432 Cover control box top RH 23969368 X Thermostat oven cavity hi limit Fuse holder 60 Hz ovens 370342 Fuse holder CE ovens 50 HZ V __ Plug connector diagnostic part of wire harness Thermocouple type J 9004364 Control panel 2SB oven split belt bottom 9004365 Control panel 2TS oven split belt top 9004347 Control panel 2SS oven split belt top and bottom Impinger X2 Analog Service Manual Dom amp Int l 32 33 BRR ON Impinger X2 Analog Service Manual Dom amp Intl IMPINGER X2 OVENS BURNER DRIVE END
8. pins 3 and 2 pilot valve If voltage is not present replace burner 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 Thermocouple probe Pilot valve Check for 24VAC supplied to pilot valve If no voltage is present trace wiring back to burner control If voltage is connection If no gas pressure is present during ignition check for any blockage in the assembly If the oven replace the gas valve No pilot flame If the 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 orifice If there is gas pressure at the pilot tube check the pilot as needed Burner igniter Check the burner igniter head for any damage or Check spark gap gap should be 3 32 If there is visible damage replace burner igniter Pilot flame but no main flame Electronic temperature Check for 120VAC supplied to electronic temperature control control at terminals 13 and 12 Of there is no voltage 120VAC supplied to terminal 20 on the electronic temperature control If there is no volt
9. power at main breaker Remove 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 Remove 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 wc 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 asco Ius 7 Unbolt air return panels from inside top 8 Remove sheet metal from plenum 16 Impinger X2 Analog Service Manual Dom amp Int l 9 Remove burner tube bracket and Burner tube To remove burner tube Remove cap from idle end of Oven wall and remove burner tube 10 Measure distance from end of shaft to the collar 11 of blower wheel Loosen blower wheels from shaft 1 4 allen screws use liquid wrench Push blower wheels toward idle end 12 Loosen and remove idle and drive end bearings 13 Remove shaft and blower wheel ass
10. 70 D 900422 Finger housing middle 3240 4 right 3262 3270 Finger housing top 3240 1 left 3262 3270 Finger housing top 3240 2 right 3262 3270 Finger cover top 1 7007168 Fingercover bottom 1 Z o Z o 2001303020 Air return lower model 3270 1008011401 Door solid 3262 gt 1 1 11 20080114041 Doorsolid 3270 gt Z 300801140 Door w window 3240 gt Z 100801140 Door w window 3262 1 11 1 2000801140 Doorw window 3270 gt Z gt 2805112 Nameplate Impinger X2 P 100804622 Sandwich door assy Q 21003090 X Caster 5 100303900 Caster 5 w brake 1 8 300202080 Bottom finger support 3240 100202036 Bottom finger support 3262 200202036 Bottom finger support 3270 o 9004443 Center finger support 3262 O o 9004417 Center finger support 3270 o 1 9004334 Top finger support 3262 gt 1 9004418 Topfinger support 3270 Z 9414 Ovenbase low 3240 1 9402 Ovenbase high 3262 gt 941 Oven base low 326200 944 jOvenbesehigh 3270 Z 1 i i 94122 Oven base low 32700 f080032EP Hinge plate right 1 0 10 9004436 Center air return upper 3270 i 9004437 Center air return middle 3270 9004438
11. 8 Center air return lower 3270 Impinger X2 Analog Service Manual Dom amp Int l 28 Impinger X2 Analog Service Manual Dom amp Intl 29 IMPINGER X2 OVENS OVEN CAVITY 900419 Guard shaft 3270 B J 447215 Housing blower 1 200601417 Airretunplate right 3270 0 D 1 100601417 Air return plate left 3240 3262 200601417 Air return plate left 3270 gt E 100601394 Air dam upper F 100110224 Close off upper plenum 100102601 Support oven cavity 1 1 0 H J 100106000 Plate connector 1 900601280 Extension tube burner 3240 100601280 Extension tube burner 3262 200601280 Extension tube burner 3270 100601328 Shaft blower wheel assy 3262 200601328 Shaft blower wheel assy 3270 100140001 Ovenback 3262 2001400011 Ovenback 3270 Heat slinger 3240 890047 Heatslinge 3262 3270 1 3900663 J Bearing idler P 9004431 Topcover idlerend Q 100120224 Coveniderend R 10010204 Flange thermocouple mount 7007375 Quard centerairretun 3270 Impinger X2 Analog Service Manual Dom amp Int l 30 Impinger X2 Analog Service Manual Dom amp Intl 31 IMPINGER X2 OVENS CONTROL BOX B 100501329 Frontcover 2oven 100501327 Frontcover 215
12. ATIC DIAGRAM TROUBLESHOOTING GUIDE 3240 2 120 230VAC 60 HZ 1 PHASE 3240 2 120 230VAC 60 HZ 3 PHASE 3262 2 120 230VAC 60 HZ 1 PHASE 3262 2 120 230VAC 60 HZ 3 PHASE 3270 2 120 230VAC 60 HZ 1 PHASE 3270 2 120 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 SYMPTOM POSSIBLE CAUSE EVALUATION Oven fan will not run Incoming power supply Check circuit breakers Reset if required Call power co if needed Fuse 2 Amp control F7 Check replace if necessary Fuse holder Check replace if necessary owitch oven fan Check continuity between switch terminals Replace switch as needed 30 minute time delay relay Check for supply voltage to 30 minute time delay relay at terminals 2 and 3 If no voltage is present trace wiring back to main power switch If there is supply voltage at terminals 2 and 3 check for output voltage at terminals 1 and 3 If there is incoming voltage but no output voltage and the main power switch is on replace the 30 minute time delay relay Relay main fan Check for supply voltage to relay contacts if no voltage EH m is present trace wiring back to power supply Check for mE Overload protector main fan 6 Overload Protector below If voltage is present check to insure relay contacts are closing Replace relay
13. B 3900488 Heatslinger 3240 1 890047 Heatslinger 3262 3270 507500EP 9 4JBeaingdiveed pod Cable spark 4 JOrnfiepiotLP L M N Valve main gas 24VAC 1 Orifice Main burner LP Impinger X2 Analog Service Manual Dom amp Int l 34 30 Impinger X2 Analog Service Manual Dom amp Intl IMPINGER X2 OVENS CONVEYOR SINGLE 100403101 Shelf outtake side B 100403107 Panstop zerostop D 369005 Connecting link E 100405831 Conveyor belt complete 3240 100405810 Conveyor belt complete 3262 100405830 Conveyor belt complete 3270 405830 1EP Conveyor belt 1ft section Bushing assembly single belt 390051 100404710 Shaft idle end 406000EP Roller smooth bo X 405900EP Roller notched J 300403331 Frame assembly upper conveyor 3240 100403361 Frame assembly upper conveyor 3262 200403390 Frame assembly upper conveyor 3270 300403330 Frame assembly lower conveyor 3240 100403360 Frame assembly lower conveyor 3262 200403380 Frame assembly lower conveyor 3270 Coupling half Impinger X2 Analog Service Manual Dom amp Int l 36 37 Impinger X2 Analog Service Manual Dom amp Intl IMPINGER X2 OVENS CONVEYOR DUAL BELT 1 100403101 Take off shelf outtake side B 100403107 Pan stop zero stop D 405849 2EP X Conn
14. C 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 five conductor service for three phase Black conductor is hot Red conductor is hot Orange conductor is hot White conductor is neutral Green conductor is ground MAIN FAN CIRCUIT Power is permanently supplied to the normally open contacts of the main fan relay Power is also supplied through a 2 amp fuse to the 30 minute time delay relay Closing the oven fan switch enables the 30 minute time delay relay The 30 minute time delay relay supplies 220 240VAC to the coil of the main fan relay These normally open contacts now close energizing the main fan motor Closing the main fan switch also supplies 220 240 VAC to the burner and conveyor switches BURNER CIRCUIT Closing the main fan switch supplies 220 240VAC to the normally open burner switch Closing the burner switch supplies 220 240VAC through the EMI filter to the electronic temperature control 220 240VAC is supplied through the air pressure switch and the oven cavity hi limit thermostat to the burner control When the burner control is energized 220 240VAC is supplied to the burner blower motor The normally open air pressure switch
15. Remove four screws and remove conveyor motor assembly Remove hall effect sensor and magnet one mounting nut and mounting stud from old motor Reassemble in reverse order and check system operation So ea REVERSING SWITCH REPLACEMENT Shut off power at main breaker Remove control box 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 Nee DEE Impinger X2 Analog Service Manual Dom amp Int l 21 HALL EFFECT SENSOR REPLACEMENT Shut off power at main breaker Remove control box cover Disconnect all wiring from hall effect sensor and mark all wiring for reassembly Hemove mounting nut and remove hall effect sensor and magnet Reassemble in reverse order and check system operation WI o Iam CONVEYOR CONTROL REPLACEMENT Shut off power at main breaker 2 Remove control box cover 3 Remove top and rear covers from conveyor control Disconnect all wiring from the conveyor control and mark all wiring for reassembly 4 Remove two screws and remove faceplate from conveyor control Remove two mounting screws and remove conveyor control 5 Reassemble in reverse order set control for proper programming see CONVEYOR CONTROL PROGRAMMING and check system operation Impinger X2 Analog Service Manual Dom amp Int l 22 CONVEYOR CON
16. SERVICE MANUAL DOMESTIC amp INTERNATIONAL IMPINGER X2 OVENS WITH ANALOG 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 SERVIC PAR X2svcmanual REV 1 8 07 SEQUENCE OF OPERATION IMPINGER X2 OVENS 3240 27 120 230VAC 60 HZ 1 PHASE 3240 27 120 230VAC 60 HZ 3 PHASE 3262 2 120 230VAC 60 HZ 1 PHASE 3262 2 120 230VAC 60 HZ 3 PHASE 3270 2 120 230VAC 60 HZ 1 PHASE 3270 2 120 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 3 four conductor service for single phase or a five conductor service for three phase Black conductor is hot Red conductor is hot Orange conductor is hot White conductor is neutral Green conductor is ground MAIN FAN CIRCUIT Power is permanently supplied to the normally open contacts of the main fan relay Power is also supplied through a 2 amp fuse to the 30 minute time delay relay Closing the oven fan switch enables the 30 minute time delay relay The 30 minute time de
17. TROL PROGRAMMING 1 Determine which brand of motor is connected to the conveyor control 2 Determine which type of dart conveyor control is installed in the oven Looking at the face of the control the old style control will have up and down keys only The new style Dart conveyor control will have up down and enter keys 3 Determine the type of drive direct 10 15 chain reduction or right angle drive 4 Determine the bake chamber size 40 62 or 70 DART Conveyor control with UP and DOWN keys only OLD STYLE DIP switches 1 Remove control box cover 2 Hemove top cover from conveyor control Make sure that all DIP switches are in the OFF position 3 Turn oven on turn conveyor on Set switch 7 to ON position Display should read PROG 4 Set switch 4 to ON position to set time mode Press UP or DOWN keys to set value at 05 Set switch 4 to OFF display should read PROG and a colon should be lit 5 Set switch 1 to ON position to set constant Use the UP or DOWN keys to set the following CHAMBER DRIVE CONSTANT CONSTANT CONSTANT LENGTH TYPE DAYTON GLEASON GLEASON AVERY 60Hz AVERY 50Hz 40 Direct 2 00 2 25 2 17 10 15 chain reduction 3 01 Right angle motor 1 31 62 Direct 3 07 3 45 3 33 10 15 chain reduction 4 40 Right angle motor 2 22 70 Direct 3 31 4 14 10 15 chain reduction 5 16 Right angle motor 2 40 6 Set switch 1 to OFF posit
18. WN 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 Analog Service Manual Dom amp Int l 3 SHJEHTIN HIN HINO UOLOM ZH 8 TVONJIHYANID ZH HOLIMS 5 NVJ NIVH OLO iH s s v D 5 10114 AAWA EA MOA3ANOO LOG HOIIMS PS MOSN3S 123443 TIVM WSH lEH R NIVM BAVA ZA YDA3ANDD dOl HOLIMS EG MOLINO XMYdS HOSN3S 3HYTM 15 53 1 NOILY WORE dhal SAWA IA UNNE HOLIMS 25 Ve ANd 8ld 1d f 3dAl 314000201 21 101 NAO iDLIKG 15 OULNOD 51140113373 n T n n LIMIT HSIH NGAO AVIS tl HANOI ua Wn AVIAN ZH YAGI DIV 2115080910 T WAOG 1009 102 11 Li RY NIVH AVI 18 NOILISOd Nid 8OLJ3NNDO 2115049010 ND IDMINOO MOASANOO HINL ENISMMARI YOASANOD INDUS 08 HOLIMS 6E UMIL MMOQ 1000 HOISIS3M HOAZANOO 108 TOHINOD 0 E09 66 95 NOLIISOd DGN OL HOLIAS NISHA 038 1630 21901 HISSA MOASANOO MOVA 108 HOLIAG BE NYS NIVH MOLOSIOMd OYOTMJAD 70 MOABANDD dOl TOULNOD 29319 230 BINO HORAN NDA NOT LORI BOR BANDS OL 5 LON CARIA UVR SINGAVT HOLIAG SNISHJAJM rete e pr I amp BOLAND 200 0104 MN HLAS SHEE DIY BY Impinger
19. ace burner transformer Relay burner blower Check for 24VAC supply to relay coil If no voltage is present trace wiring back to burner transformer Check for 120VAC to relay contact If no voltage is present trace wiring back to air pressure switch When 24VAC is applied to the coil there will be a delay of 20 30 seconds After this time delay the relay contacts should close If there is 24VAC applied but the contacts do not close replace the burner blower relay Motor burner blower Check for 120VAC supplied to the burner blower motor If no voltage is present trace wiring back to the burner blower relay 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 Centrifugal switch of Check for 24VAC supplied to centrifugal switch at wire Burner blower motor 55 If no voltage is present trace wiring back to the burner transformer If voltage is present check for 24VAC out of centrifugal switch at wire 32 If there is voltage in but there is no voltage out and the burner blower motor is running replace the burner blower motor Burner control Check for 24VAC supplied to the burner control at terminals 5 and 6 If no voltage Is present trace Impinger X2 Analog Service Manual Dom amp Int l 7 wiring back to the centrifugal switch of the burner blower motor If voltage is present check for 24VAC at
20. age at terminal control to maximum temperature and check for 120VAC output at terminal 221 and neutral If 120VAC not heating refer to Temperature regulation valve for next check If 120 VAC is not present proceed ATTACHED TO THE ELECTRONIC TEMPERATURE CONTROL Measure the D C millivolt output of these Adjustment section for proper readings If these readings are not achieved replace thermocouple 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 Impinger X2 Analog Service Manual Dom amp Int l present check for gas pressure at the pilot line there are no obstructions and there is gas supplied to 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 orifice for blockage or obstructions Replace pilot orifice obstructions also check for frayed or broken wire NOTE Flame should be On at this time trace wiring back to the burner switch Also check for 20 trace wiring back to terminal 13 Set temperature is present at terminal 20 and neutral and the unit is
21. al 13 on the burner control With a visible pilot flame the current reading should be 0 7 micro amp minimum NOTE The D C micro amp test must be conducted with the oven in low flame operation only If these values are not achieved replace flame sensor Also check for any type of damage to flame sensor wire and connections Power supply If there is a pilot flame and there is sufficient micro amp current but the flame will not stay on check for proper polarity of the power supply Burner control If there is sufficient micro amp current and there is proper polarity of the power supply but the burner will not stay on check the reset button for the burner control If the reset switch checks okay replace the burner control Pilot flame but no main flame NOTE Flame should be Check for supply voltage to electronic temperature Impinger X2 Analog Service Manual Dom amp Int l 13 On at this time control at terminals 13 and 12 Of there is no voltage Electronic temperature trace wiring back to the burner switch Also check for control supply voltage to terminal 20 on the electronic temperature control If there is no voltage at terminal 20 trace wiring back to terminal 13 Set temperature control to maximum temperature and check for output voltage at terminal 21 and neutral If voltage is present at terminal 20 and neutral and the unit is not heating refer to Temperature regulation valve for next check
22. be connected to the HIGH port of the air pressure switch 5 Remove mounting screws and remove air pressure switch 6 Reassemble in reverse order Adjust air pressure switch for proper operation see below and check system operation AIR PRESSURE SWITCH ADJUSTMENT 1 otart the oven After the burner ignites turn the air pressure switch adjustment screw Clockwise until the burner shuts off 2 Turn the adjustment screw Counterclockwise until the burner ignites plus one full turn 3 oeal adjustment screw with nail polish 4 Replace cover on air pressure switch ELECTRONIC TEMPERATURE CONTROL REPLACEMENT Shut off power at main breaker Remove control box cover Disconnect wiring from electronic temperature control and mark all wiring for reassembly Locate and remove mounting screw at the bottom center of the electronic temperature control Remove control from control base Hemove two mounting screws from control base and remove control base from oven Reassemble in reverse order and check calibration of new control see below and check system operation cd ce oon ELECTRONIC TEMPERATURE CONTROL CALIBRATION Turn burner switch off 2 Remove electronic temperature control from the mounting base by removing one retaining screw at the bottom of the electronic temperature control Pull electronic temperature control from it s mounting base 3 Locate Hairpin switch on the control and open the Hairpin s
23. ceptacle Measure incoming power call power co if needed owitch oven fan 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 Fuse 2 Amp Check replace if necessary Fuse holder Check for 120VAC supplied to fuse holder If no voltage is present trace wiring back to main fan relay Check fuse holder replace if necessary owitch conveyor Check for 120VAC supplied to conveyor switch If no voltage is present trace wiring back to fuse holder Check continuity between switch terminals Replace switch as needed Control conveyor Check for 120VAC supplied to conveyor control at terminals 1 AC and 2 AC If no voltage is present trace wiring back to conveyor switch If AC voltage is present check for DC voltage output at terminals 3 A and 4 A If there is AC voltage in but no DC voltage out of the conveyor control Replace the conveyor control If there is D C voltage output proceed Fuse 2 Amp Check replace if necessary Fuse holder Check for D C voltage supplied to fuse holder If no voltage is present trace wiring back to conveyor control Check fuse holder replace if necessary owitch conveyor reversing Check fo
24. closes upon sensing air pressure After a pre purge of 30 seconds the pilot valve and spark are energized Ignition should now occur After the pilot flame is proven the main valve is energized TEMPERATURE CONTROL Closing the main fan switch and burner switch supplies 220 240 VAC to the electronic temperature control The electronic temperature control is adjusted to the desired temperature The thermocouple will provide varying millivolts to the electronic temperature control The temperature control supplies 220 240 VAC to the temperature regulation valve at intermittent intervals to maintain desired 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 220 240VAC through the EMI filter to the normally open conveyor switch through a 2 Amp fuse to the conveyor control AC voltage is converted to DC voltage and DC voltage is supplied at terminals A and A to the conveyor motor Adjusting the conveyor control will vary the DC output voltage The speed of the motor will increase or decrease as the DC voltage from the conveyor control increases or decreases The conveyor control uses a hall effect sensor and magnet mounted on the conveyor motor that senses motor speed The sensor detects any change in motor load RPM and the voltage to the motor is adjusted accordingly AUTOMATIC COOL DO
25. e belt as needed Check for any damage or excessive wear on the shaft bearings Replace bearings as needed 11 Switch oven fan 30 minute time delay relay Relay main fan Overload protector main fan Drive belt Bearings Fan shaft Impinger X2 Analog Service Manual Dom amp Int l Oven will not heat Gas supply Check for adequate gas supply to oven Manual gas shut off valve Relay main fan Check to see that the manual gas shut off valve is open Also check flexible gas line connection for any damage s for main fan operation If it is not operating refer o Oven fan will not run an 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 Check replace if necessary Check replace if necessary Check for supply voltage to the switch if no voltage is present trace wiring back to the main fan relay Check continuity between switch terminals Replace switch as needed Check for supply voltage to the switch if no voltage is present trace wiring back to the oven fan switch Check continuity between switch terminals Replace switch as needed Check for supply voltage to the air pressure switch If no voltage is present trace wiring back to burner switch This normally open switch
26. ect 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 QUIM Qo eO SPARK IGNITER REPLACEMENT 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 pilot shield and pilot orifice from spark igniter and remove spark igniter Reassemble in reverse order and check system operation E aaa ce PME DEN 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
27. ecting link lt lt E 100405847 Conveyor belt complete 3240 405849EP Conveyor belt complete 3262 100405844 Conveyor belt complete 3270 MT 405849 1EP Conveyor belt 1ft section 390050 Bushing assembly dual belt 100404710 Shaft idle end 406000EP Roller smooth bo X 405900EP Roller notched J 300403331 Frame assembly upper conveyor 3240 100403361 Frame assembly upper conveyor 3262 200403390 Frame assembly upper conveyor 3270 300403330 Frame assembly lower conveyor 3240 100403360 Frame assembly lower conveyor 3262 200403380 Frame assembly lower conveyor 3270 Coupling half Impinger X2 Analog Service Manual Dom amp Int l 38 39 Impinger X2 Analog Service Manual Dom amp Intl 9 Lincoln lt 5 7 es SERVICE AND PARTS Impinger X2 Analog Service Manual Dom amp Intl 40
28. embles measure length of shaft extension from oven wall Use same measurement when putting new shaft in Remove shaft through idle end of oven 14 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 15 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 Analog Service Manual Dom amp Int l 17 RELAY MAIN FAN REPLACEMENT Shut off power at main breaker Remove control box cover Disconnect 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 Ol aedifi EE TIMER 30 MINUTE COOL DOWN REPLACEMENT Shut off power at main breaker Remove control box cover Disconnect all wiring from 30 minute cool down timer and mark all wires fo
29. g to the NO terminal of the air pressure switch 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 Impinger X2 Analog Service Manual Dom amp Int l Fuse 2 Amp control F8 holder i MN oven fan 0 mM 0 Motor burner blower Air pressure switch burner motor Burner control Check for supply voltage at terminal 7 on burner control If no voltage is present trace wiring back to air pressure switch If voltage is present check for output voltage after the 30 second delay from terminal 8 on the burner control If there is no output voltage from terminal 8 after the 30 second delay replace the burner control If there is output voltage proceed Pilot valve Check for supply voltage to pilot valve If no voltage is 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 Burner control Check to see that the high voltage igniter circuit on the burner control is energized To check turn power off disconnect the igniter lead from the burner control Turn power on If no spark is visible replace bu
30. in breaker Remove control box cover Disconnect thermocouple from electronic temperature control Note wire colors for reassembly Remove oven back assy Remove thermocouple from mounting flange in blower housing Remove thermocouple from oven 5 Reassemble in reverse order and check system operation p m THERMOSTAT HI LIMIT REPLACEMENT Shut off power at main breaker Remove control box cover Disconnect all wiring from hi 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 ATOUT ske sd Ies TEMPERATURE REGULATION VALVE REPLACEMENT 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 and the main gas valve Mark all wiring for reassembly 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 gah OR GAS VALVE REPLACEMENT 1 Shut off power at main brea
31. ion display should read PROG 7 Set switch 2 to ON position to set minimum setting Use UP or DOWN keys to set to 2 15 Set switch 2 to OFF position display should read PROG 8 Set switch 3 to ON position to set maximum setting Use UP or DOWN keys to set to 16 00 Set switch 3 to OFF position display should read PROG Set switch 7 to OFF position Programming is complete 0 Reassemble in reverse order and check system operation Impinger X2 Analog Service Manual Dom amp Intl 23 CONVEYOR CONTROL PROGRAMMING DAYTON MOTOR DIRECT DRIVE Jumper DART Conveyor control with UP DOWN and ENTER keys NEW STYLE Hemove control box cover Remove top cover from conveyor control Locate program jumper on conveyor control and set jumper to the ON position Turn oven on turn conveyor on Press and hold the ENTER key until the Parameter Selection Mode is entered display will indicate P 0 Using the UP or DOWN keys select the parameters to be changed See chart below When the parameter is selected press ENTER Use the UP or DOWN keys to set the desired parameter Press ENTER to save the changes After all parameters are programmed select parameter 0 and press the ENTER key to return to the running mode Set program jumper on conveyor control to OFF Reassemble in reverse order and check system operation Explanati
32. ittent control If voltage is not steady trace back to power supply Control conveyor Check for a steady DC voltage output at terminals A and A If voltage is not steady proceed Check for 5 VDC output from the conveyor control at terminals 5V red and COM black If there is no voltage output replace the conveyor control If there is DC output proceed Motor conveyor Check conveyor motor and gearbox for any visible damage If there is apparent damage repair or replace conveyor motor Check motor brushes for excessive or abnormal wear Replace motor brushes as needed Hall effect sensor magnet Check to be sure that the Hall effect sensor and magnet are mounted on the motor Check for any visible damage to the Hall effect sensor and magnet If there is visible damage repair or replace as needed If there is no visible damage check for a frequency output from the hall effect sensor at terminals SIG white and COM black Readings should be as follows 2 15 cook time 56 Hz approx 5 00 25 Hz approx 10 00 13 Hz approx 16 00 8 Hz approx If these readings are not achieved replace the Hall effect sensor magnet Impinger X2 Analog 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
33. ker 2 Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven 3 Remove control box cover Impinger X2 Analog Service Manual Dom amp Intl 4 Disconnect all wiring from the temperature regulation valve and the main gas valve Mark all wiring for reassembly 5 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 6 Remove piping from old valve and reassemble in reverse order T 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 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 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 gt pos GOI PILOT ORIFICE REPLACEMENT Shut off power at main breaker Shut off the gas supply to the oven and disconn
34. lay relay supplies 120VAC to the coil of the main fan relay These normally open contacts now close energizing the main fan motor Closing the main fan switch also supplies 120VAC to the burner and conveyor switches BURNER CIRCUIT Closing the main fan switch supplies 120VAC to the normally open burner switch Closing the burner switch supplies 120VAC to the electronic temperature control through the air pressure switch and the oven cavity hi limit thermostat to the normally open contact of the burner blower relay and to the primary of the burner transformer The transformer s secondary supplies 24VAC To the normally open contacts of the burner blower motor centrifugal switch and to the coil of the burner blower relay the normally open contacts close within 30 seconds The burner blower relay contacts close supplying 120VAC to the burner blower motor As the burner blower motor reaches operating speed it s internal centrifugal switch closes supplying 24VAC 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 TEMPERATURE CONTROL Closing the main fan switch and burner switch supplies 120VAC to the electronic temperature control The electronic temperature control is adjusted to the desired temperature The thermocouple will provide varying millivolts to the electronic temperat
35. net are mounted on the motor Check for any visible damage to the Hall effect sensor and magnet If there is visible damage repair or replace as needed If there is no visible damage check for a frequency output from the hall effect sensor at terminals SIG white and COM black Readings should be as follows 2 15 cook time 56 Hz approx 5 00 25 Hz approx 10 00 13 Hz approx 16 00 8 Hz approx If these readings are not achieved replace the Hall effect sensor magnet Impinger X2 Analog Service Manual Dom amp Int l Conveyor speed varying or Power supply intermittent Control conveyor Motor conveyor 0 0 10 TROUBLESHOOTING GUIDE 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 SYMPTOM POSSIBLE CAUSE EVALUATION Oven fan will not run Incoming power supply Check circuit breakers Reset if required Call power co if needed Fuse holder Check replace if necessary Check continuity between switch terminals Replace switch as needed Fuse 2 Amp control F7 Check replace if necessary Check for supply voltage to 30 minute time delay relay at terminals 2 and 3 If no voltage is present trace wiring back to main power switch If there is supply voltage at te
36. on Time Mode Setting MM SS 0 Display minimum setting value is in seconds 21 960 960 960 Display maximum setting value is in seconds Display setting at reference RPM parameter 31 Impinger X2 Analog Service Manual Dom amp Intl 24 CONVEYOR CONTROL PROGRAMMING DAYTON MOTOR RIGHT ANGLE DRIVE Jumper DART Conveyor control with UP DOWN and ENTER keys 8 Hemove control box cover 9 Remove top cover from conveyor control Locate program jumper on conveyor control and set jumper to the ON position 10 Turn oven on turn conveyor on Press and hold the ENTER key until the Parameter Selection Mode is entered display will indicate P 0 11 Using the UP or DOWN keys select the parameters to be changed See chart below When the parameter is selected press ENTER Use the UP or DOWN keys to set the desired parameter Press ENTER to save the changes 12 After all parameters are programmed select parameter 0 and press the ENTER key to return to the running mode 13 Set program jumper on conveyor control to OFF 14 Reassemble in reverse order and check system operation 21 960 Display maximum setting value is in seconds 98 5 Save parameter settings to user default area Impinger X2 Analog Service Manual Dom amp Int l 25 CONVEYOR CONTROL PROGRAMMING GLEASON AVERY MOTOR DIRECT DRIVE Jumpe
37. r DART Conveyor control with UP DOWN and ENTER keys Remove control box cover Remove top cover from conveyor control Locate program jumper on conveyor control and set jumper to the ON position Turn oven on turn conveyor on Press and hold the ENTER key until the Parameter Selection Mode is entered display will indicate P 0 Using the UP or DOWN keys select the parameters to be changed See chart below When the parameter is selected press ENTER Use the UP or DOWN keys to set the desired parameter Press ENTER to save the changes After all parameters are programmed select parameter 0 and press the ENTER key to return to the running mode Set program jumper on conveyor control to OFF Reassemble in reverse order and check system operation 15 16 17 18 19 20 21 Explanation Time Mode Setting MM SS 0 Display minimum setting value is in seconds 21 960 960 960 Display maximum setting value is in seconds Display setting at reference RPM parameter 31 Impinger X2 Analog Service Manual Dom amp Intl 26 27 This page intentionally left blank Impinger X2 Analog Service Manual Dom amp Int l IMPINGER X2 OVENS GENERAL VIEW Finger housing bottom 3240 5 left 3262 3270 B 1 900415 Finger housing bottom 3240 6 right 3262 3270 Finger housing middle 3240 3 left 3262 32
38. r D C voltage supplied to the reversing switch If no voltage is present trace wiring back to the fuse holder Check continuity between switch terminals Replace switch as needed Conveyor motor Check for D C voltage to the conveyor motor If no voltage is present trace wiring back to the reversing switch If voltage is present and the motor will not run check the motor windings for opens or shorts Check motor brushes for excessive wear Replace motor brushes as needed If any of the above fails replace conveyor motor Check for any mechanical problems in the conveyor Impinger X2 Analog Service Manual Dom amp Int l 9 assembly Check for damaged or torn belting Check conveyor shaft bearings for damage or excessive wear Repair or replace conveyor components as needed Check for a steady 120VAC supply to the conveyor control If voltage is not steady trace back to power supply Check for a steady DC voltage output at terminals A and A If voltage is not steady proceed Check for 5 VDC output from the conveyor control at terminals 5V red and COM black If there is no voltage output replace the conveyor control If there is DC output proceed Check conveyor motor and gearbox for any visible damage If there is apparent damage repair or replace conveyor motor Check motor brushes for excessive or abnormal wear Replace motor brushes as needed Check to be sure that the Hall effect sensor and mag
39. r reassembly Remove one mounting bolt and remove 30 minute cool down timer Reassemble in reverse order and check system operation OL ge Docs FUSE HOLDER REPLACEMENT 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 e TO SWITCH ON OFF REPLACEMENT Shut off power at main breaker Remove control box cover Disconnect wiring from switch and mark all wiring for reassembly Remove switch by loosening the mounting screw at the bottom of the switch and lifting the release lever at the top of the switch Lifting the release lever allows the front portion of the switch to separate from the rear portion of the switch Reassemble in reverse order and check system operation gl a D MOTOR BURNER BLOWER REPLACEMENT Shut off power at main breaker Remove control box cover and front control box cover Remove box cover from burner blower motor and disconnect wiring from motor Mark all wiring for reassembly Remove three mounting screws and remove burner blower motor assembly Remove box and components from the old burner blower motor and mount on new burner blower motor Mark all wiring for proper assembly Remove air shutter assembly from old motor and mount on new motor Reassemble in reverse order and check system operation
40. rminals 2 and 3 check for output voltage at terminals 1 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 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 3260 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 broken drive belt Adjust motor for proper belt tension maximum of 3 8 inch deflection or replace driv
41. rner control If a spark is visible at burner control proceed Burner igniter Check the burner igniter head for any damage or obstructions also check for frayed or broken wire Check spark gap gap should be 3 32 If there is visible damage replace burner igniter No pilot flame If there is supply voltage to the burner control 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 Burner igniter Check the burner igniter head for any damage or obstructions also check for frayed or broken wire Check spark gap gap should be 3 32 If there is visible damage replace burner igniter Flame sensor There should be a visible pilot flame at this time To check for proper flame sensor operation connect a digital multimeter capable of measuring D C micro amps in series between the flame sensor wire normally connected to terminal 13 on the burner control and termin
42. s 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 fan 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 e Fuse 2 Amp Check replace if necessary Fuse holder Check for supply voltage to fuse holder If no voltage is present trace wiring back to main fan relay Check fuse holder replace if necessary owitch conveyor Check for supply voltage to conveyor switch If no voltage is present trace wiring back to fuse holder Check continuity between switch terminals Replace 14 Impinger X2 Analog Service Manual Dom amp Int l SWithasneeded Control conveyor Check for s
43. 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 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 control setting check for proper location of capillary tube in the oven cavity If above checks okay replace hi limit thermostat Check for supply voltage to the burner control at terminals 1 and 8 If no voltage is present trace wiring back to the hi limit thermostat If voltage is present check for supply voltage at pins 48 and 3 burner blower motor If voltage is not present replace burner control If voltage is present proceed 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 Heplace burner blower motor as needed Check for supply voltage at the COM terminal on the air pressure switch If no voltage is present trace wiring back to burner control If voltage is present check for supply voltage switching to the NO terminal on the air pressure switch If the burner blower motor is running but voltage is not switchin
44. upply voltage to conveyor control at terminals 1 AC and 2 AC If no voltage is present trace wiring back to conveyor switch If AC voltage is present check for DC voltage output at terminals 3 A and 4 A If there is AC voltage in but no DC voltage out of the conveyor control Replace the conveyor control If there is D C voltage output proceed Fuse 2 Amp Check replace if necessary Fuse holder Check for D C voltage supplied to fuse holder If no voltage is present trace wiring back to conveyor control Check fuse holder replace if necessary owitch conveyor reversing Check for D C voltage supplied to the reversing switch If no voltage is present trace wiring back to the fuse holder Check continuity between switch terminals Replace switch as needed Conveyor motor Check for D C voltage to the conveyor motor If no voltage is present trace wiring back to the reversing switch If voltage is present and the motor will not run check the motor windings for opens or shorts Check motor brushes for excessive wear Replace motor brushes as needed If any of the above fails replace conveyor motor 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 Conveyor speed varying or Power supply Check for a steady supply voltage to the conveyor interm
45. ure control The temperature control supplies 120VAC to the temperature regulation valve at intermittent intervals to maintain desired 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 and the normally open conveyor switch supplies 120VAC through a 2 Amp fuse to the conveyor control AC voltage is converted to DC voltage and DC voltage is supplied at terminals A and A to the conveyor motor Adjusting the conveyor control will vary the DC output voltage The speed of the motor will increase or decrease as the DC voltage from the conveyor control increases or decreases The conveyor control uses a hall effect sensor and magnet mounted on the conveyor motor that senses motor speed Any change in motor load RPM is detected by the sensor and the voltage to the motor is adjusted accordingly 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 2 Impinger X2 Analog Service Manual Dom amp Int l SEQUENCE OF OPERATION IMPINGER X2 OVENS 3240 27 230VAC 50 HZ 1 PHASE 3262 2 230VA
46. witch See photo next page Replace control in the mounting base 4 Turn the burner switch on If the display reads CAL press the UP arrow until the display reads Cnt on the SV orange display 5 Press the FUNC key until the display reads P13 in the SV orange portion of the display Using the UP or DOWN arrows adjust the PV yellow portion of the display to read 500 This is the offset point 6 Press the FUNC key until the display reads P14 in the SV orange portion of the display Using the UP or DOWN arrows adjust the PV yellow portion of the display to read 50 This is the Offset value continued next page Impinger X2 Analog Service Manual Dom amp Int l 19 7 Press the FUNC key until the display reads Cnf Shut off burner remove control from the mounting base Close the Hairpin switch on the control and replace the control in the mounting base 8 Turn the burner on Set oven temperature to 500 F and verify calibration Allow oven to preheat for at least 30 minutes Place temperature probe in the center of the oven on the top conveyor If the actual temperature differs from the displayed temperature more than 5 the offset value must be adjusted steps 2 through 7 until the proper temperature is indicated on the display 9 Reassemble in reverse order and check system operation HAIRPIN SWITCH THERMOCOUPLE REPLACEMENT Shut off power at ma
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