Home

Service Manual 01/05/2007

1. LT gay 22 213 94 53 a ante HO 100 N33HD 104 0109 55 25 1OGH3ATS IVA TTL MENO 5301 DNINGOS 1542 NIWA ONLY3H 4881 HOAZANOS E TSM ToULNGOI 40441 486 7254 DEN 810 2 ONY 4 OL 2504 PE d Y 2 3545 MCA 13 DITA 1104 OL SAHO X 8 0 LION Ld FO OHvOq zo INTI HOLON HY 4 AGS HM LE Z HOIETIdY2 LAT ALAYI N3AO L YLSOWGIRUL NY4 LYLSOMHJHL 24 LETT ri 15 Domestic Impinger II 1100 Series Service Manual SCHEMATIC 1132 1133 S N 2011384 amp ABOVE EELL ZELL STIGON 8304 es 1S 32818 NOTLAG 191519 13 SN 59 x 7 2 i8 GAH OL LI MOT38 Y NS 32018 TYNINH3L 01 108791510 tr 122 SYJEKNN JHIA 9 HIMYNISNYYL ZYX cMIP GMIL HiHHOJENWHIL LHX 4131 3411 171 55 104 3unlvH3dW31 dl 6 OZ AY330 53411 01 3481 29702089281 21
2. 15 1560 NYA 913 al 1H HAWYDISN UL ang 10d 00 0109 100 O34 IVAO gt bCICHbY1D WY4DNICCCO WOLON N93 MA HOLO gt 107 am 19115415 HOA 3ANO3 an 914 d3L Y3H ay C 3504 ony 3503 35M ANT NY 4 KAN ite 7104 5 HOLCA MY j s rv 04 3574 MOTTE JLIHA 034 m MOTTA 36 LH 4 ti ta ta Li gi 4 ICHINGS 1911 One 9011 13 302 SIM3M313 3707 2 POLDY LMD AUNTUSIA OL SAHO 5 UALIAGUNILOG HOLCH 0 CHVOY JOMINOS MY 22 39358 NYA 91 2 3 HT4H LIATI MEAD LY 150 HH L NACO 1009 1 150 NU IHL 3unss3ud uv HILIMS 33 219 Impinger Il 1100 Series Service Manual Domestic SCHEMATIC 1102 1103 COLL PUE COLI STSQOW OI jue fue Lope JON L P RN LTE separa pred yawraq mpu is pa o Burd wo prrereg oum meres 185 4 LAE x pad duran Rotan COL prizes xm EGURS PERESR 13 40 NY ed 3518 100 H3325 10d 0705 107 CRT
3. eee 24 REMOVAL INSTALLATION AND 31 GENERAL TTO0 SERIE Surco eee 50 BLOW UP GENERAL 51 PARTS CONTROL COMPARTMENT FRONT 1100 1106 1130 1136 1150 1151 1160 1163 52 BLOW UP CONTROL COMPARTMENT FRONT 1100 1106 1130 1136 1150 1151 1160 1163 53 PARTS CONTROL COMPARTMENT FRONT 1116 1117 54 BLOW CONTROL COMPARTMENT FRONT 1116 1117 a Na 55 PARTS CONTROL COMPARTMENT REAR 1100 1106 1130 1136 1150 1151 S N 2011373 amp BELOW 1160 21103 S N 2011570 BELOW ee 56 BLOW CONTROL COMPARTMENT REAR 1100 1106 1130 1136 1150 1151 S N 2011373 amp BELOW 1160 S N 2011978 BELOW ls ar 57 PARTS CONTROL COMPARTMENT REAR 1130 1136 1150 1151 S N2011383 AND ABOVE 1160 1163 S N 9011979 AND ABOVE spre sd lit 58 BLOW CONTROL COMPARTMENT REAR 1130 1136 1150 1151 S N2011383 AND ABOVE 1160 1163 SIN 30119 8 AND ABOVE anse te 59 PARTS CONTROL COMPARTMENT REAR 1116 1117 S N 2000200 TO 2011383 2 60 BLOW CONTROL COMPARTMENT REAR 1116 1117 S N 2000200 TO 2011383 61 PARTS CONTROL COMPARTMENT REAR 1116 1117 S N 2011383 8 ABOVE 62 BLOW CONTROL COMPARTMENT REAR 11
4. HOCH IWLSCKYSHL 21 SNI1009 X06 108 503 Lik N340 HILING 68 HOLINS 25 N3AG HJLING 15 2838 HOLIYLNOI NAC 1003 3 1HYLS NJAO AY 3H ZH 30104 NJAO AVT3H 18 Ga 89 0 CE 98 L L 1 Ga 69 63 ED iE qu 83 89 Lg TE 59 1 E HEY z HEL EHH 3 i1 cl a Ly BOLJANOS HOLOM NY3 9 170202 HOLOM NJAO HOLOW L3N9YH H31V3H MOSN3S 123441 Thy 524 9 40081 51 34313 MNILVIH YE 105109 35114 VE HOA3ANOD ISNA YOL HOLOM 35Nd 71641403 3univu3dk31 J NOUI31T3 ATEWSS5 104 2 JOBLNOT YOAJANOI 0 4 S 2 HOLE 28492 HILIAS 38158184 MIY Y H SH H EJ 234 313 7 dd 2 Impinger Il 1100 Series Service Manual Domestic 16 SCHEMATIC 1162 1163 S N 2011978 amp ABOVE HOLOK N3A0 HOJ OW NYJ 9411009 YOLOW HOLOW J3NSYR HOlVJIQNI 305425 173333 TIVH 538 9 MODSI 61434373 NI LVIH VE TOYINOD Sunivdadkal 73504 VE 7081405 HOAJANDO 363 VOL BOLOWN 3504 911 pue 2911 STSGOW E HIWYOISNYHL dW31 3M41 3811 ATBWSSSY 10d 31 gt S3LONIR OZ AVT3Q HEH 922060
5. 301155 501926 108 SUO Ch 80 08 YO LOW XL o yw us ob aa LINDY MOAVOECNT 05435 123333 11 HA I 175602 N S dil 8 Qo 2 Gane go do ds peers 101185 32944825 LOH 505415 503435 VE HYAJANDI val 3suna YOL YCL WYU 14114 dena 3513 agn 705 403 4 21580812373 ATBHISSY 104 HOA3 ANDJ 109 907 HDAJANDO 472 10 12 492 AD LIND H9iH 1VLSCH3HL 9917009 08 081503 1915 3 2651409 HINE 6 3 7 d 1 HE HD GWH a 99 69 13 148 09 MERE be p aL lt 11 Impinger II 1100 Series Service Manual Domestic 1911 pue 0911 LELL DELL STSGOIN OVA 971 HINHOJSNYHL NX 1540 NY NIYW LH Yaad IL 17081403 214 14 H300283 179020 30 quedo MITO HALIMOLNALOd di MWOLONHWID EN A ee n M m HOLSINUJHL NYJ 2 FW 5 31 HOLOM IN 1104 Z YOLOVINOS 13 BLOM OE ANTI OL Ya YH SAT 1 NEAL OG SAHO 9 0 104 42 L TOULNOS BOLIANOD 1904 TOHLWOD 32 LO NU RU PUE OLAS 10025 135 AWS HOLI
6. FR V 39S ONT MOTON 01 BOJOR VY 4 0 ceezcroa 256 POL Vu RIND Ol gt 21 TRIO A WO OFF NY 4 MARA 19 INT DIM LLL LAO FLE NA DD LW OL gt 118 WY MELLA haw Impinger Il 1100 Series Service Manual Domestic 2111 PUE 9111 STIGON 4 JOULNGO HOAZANOD 671304 24 OVA H3WEOJSN H THX 138 HOLMS 15 401383 DMLLVIH OL 3804 v4 WATE 15 LYX 1549 HOLS S 39nd Ed SYD d 189 1 SATYA SYD HOSNHOC 1849 MINUNE HOLMS d9n4 74 LINO SVO JATYA SYD 13540 HALMS 15 VOLOR OL 390 00 37 5 ZA 1540 ANTAS 18 LVU OHYOG TOHLNOD 213 SYD 41 3A TYA SYD NOSNHOP HUM U300983 TYDLLJO 20 HOLON JO LU YS HOLA 255 SYD TYBNLYN 3ATV SYD NOSHHOC HOLOMHYZD HOLOR 40 184 HOLMS 159 SYD TL VN SATYA SYD TILMAINOH BOLOM OF SWHO WOO URLINOLINSIOd NYa ON ODD HOLOA CN WOLORM 70 CHYOS SOH1NO2 22 LL NY DNITO09 EN FO RIA 22 NITO
7. Oven heats with switch Mercury Contactor The mercury contactor has probably malfunctioned in the closed position If there is no voltage to the operating coil but there is high voltage at the Intermittent Heating Thermal Overload of Motor contactor output replace the mercury contactor The main fan motor is equipped with internal thermal protection and will cease to operate if overheating occurs As the motor overheats and then cools this will cause the units to cycle on and off intermittently This may be caused by improper ventilation or preventative maintenance Also most of the problems listed under Oven will not heat can cause intermittent failure Conveyor Will Not Run Conveyor Switch Check for continuity between switch terminals 3 Amp Fuse Check replace as needed Fuseholder Check replace as needed S N 2011383 and Speed Adjustment above 1130 through Potentiometer 1133 S N 2011978 and above Models 1160 through 1163 Refer to Page 29 DC Motor Control Board i Conveyor 26 This is a 0 to 5 K ohm 10 turn potentiometer WITH POWER OFF Remove the red black and white pot leads from the motor control board at terminals P1 P2 and P3 With a digital multimeter check the ohm reading across the red lead P3 to the black lead P1 This reading should be 5 K ohms 5 as the pot is rotated from low to high Place the meter leads on the red lead P3
8. Rela Conveyor Motor Assy See Page 67 for Breakdown Set Screw Sleeve only Conveyor Drive Coupling Ball Plunger Coupling Conveyor Drive Complete Thermostat Hi Limit All Models except 1150 Thermostat Hi Limit Model 1150 onl Capacitor 7 5 MFD Ground Lug Back Cover Assembl Impinger Il 1100 Series Service Manual Domestic BLOW UP CONTROL COMPARTMENT REAR 1130 1136 1150 1151 S N2011383 AND ABOVE 1160 1163 S N 3011978 AND ABOVE Impinger Il 1100 Series Service Manual Domestic 59 60 PARTS CONTROL COMPARTMENT REAR 1116 1117 S N 2000200 TO 2011383 LETTER P N 369192 369559 369561 369562 369398 3 0143 369567 369552 369556 369524 369568 369938 369556 369557 369529 369263 369401 369366 369533 369124 369535 353014 369331 369013 369012 369166 369129 369538 369537 369137 369190 369512 369269 369268 DESCRIPTION See Gear Motor Assembly on Page 67 Capacitor 90 Degree Connector Bypass Tube Assembly Model 1116 includes 369559 and 369556 Model 1117 includes 369559 and 369557 Solenoid Valve Back Cover Assembly Manifold Assembly Burner Hot Surface Igniter Orifice Main Burner Natural Orifice Main Burner LP Venturi Tube Natural Venturi Tube LP Bypass Orifice Natural Bypass Orifice LP Model 1116 using Honeywell Gas Valve Johnson Gas Valve Nat LP Air Shutter Assembly Burner Blower Thermost
9. 350 C If open push in reset button and retest If thermostat will not hold for maximum oven temperature and oven is not exceeding temperature dial setting check for proper location of capillary bulb in its spring holder If above checks okay replace hi limit thermostat Visually check to see if motor is running If not check for 120 VAC to motor at motor connector wire 40 and 41 If voltage is not present trace wiring back to oven cavity High Limit If voltage is present and motor is not running check for opens shorts or grounds Also WITH POWER OFF check for locked rotor Terminals are normally closed and open at 170 F 5 F 76 6 C 2 8 C Check for proper operation If it will not reset and hold replace thermostat Check for 120 VAC at motor connector wire 42 to neutral If voltage is not present trace wiring back to control box High Limit If voltage is present check 43 to neutral If voltage is not present and motor is running replace the Burner Blower Motor Primary is 120 VAC with 24 VAC secondary If 120 VAC is not present trace wiring back to Burner Blower Centrifugal Switch If 120 VAC is present check for 24 VAC at secondary of transformer If no voltage is present replace transformer Note The ignition control contains a safety lock out circuit If a flame is not detected within 6 seconds after the gas control valve is energized the ignition control will lock out To reset turn the burner
10. Electrical power is supplied to the oven by a three conductor cord set Voltage from the black conductor to the white conductor is 120 VAC The white conductor is CONTROL BOX AUTO neutral The green conductor is ground When the temperature in the control box reaches 120 F COOL DOWN 3 48 9 1 7 C the Cooling Fan Thermostat will switch power to the Control Box Cooling Fans The thermostat will interrupt power to the fans when the control box temperature falls 10100 F 3 37 8 1 7 C MAIN FAN CIRCUIT BURNER CIRCUIT IGNITION CONTROL TEMPERATURE CONTROL CONVEYOR DRIVE TIME TEMP DISPLAY Power is permanently supplied to the normally open contacts of the oven fan relay the normally open cooling fan thermostat terminal 1 of the time delay relay and the normally open main fan switch Closing the main fan switch enables the 20 minutes time delay relay The time delay relay supplies 120 VAC to the coil of the main fan relay These normally open contacts now close energizing the main fan motor and the cooling fans Closing the fan switch also energizes the time temp display the heat and conveyor switches Closing the Burner Switch supplies 120 VAC through the 10 Amp Fuse through the Main Fan Motor Centrifugal Switch and oven cavity High Limit Thermostat to terminal L1 of the Ignition Control The Centrifugal Switch of the Main Fan Motor closes when the fan motor reaches 1600 RPM The High Limit Thermosta
11. 10 position dip switch module Type IV is 5 5 8 inches wide x 3 1 4 inches deep Type IV has adjustment pots in the center of the board THESE SWITCHES ARE FOR HERTZ SETTINGS OFF 60HZ or ON 50HZ THESE SWITCHES ARE FOR TEMPERATURE SETTINGS OFF F or ON Impinger Il 1100 Series Service Manual Domestic MODEL 1100 SERIES OVENS See GR Stepper Type IV Off Baldor EE erp Stepper Motor Conveyor Speed 23 Seconds to 30 Minutes Type lli Off 5 s On On Off On Off On On Off Off Off TIME TEMP DISPLAY FOR D C DRIVE lt I I I I ul tc a z i gt DIP SWITCH MODULE TEMP TYPE I AND II HAVE ONLY 6 SWITCHES 2 34 56 78 910 EEE ee 888888 1 5 SWITCH POSITION ON OFF v FOR DISPLAYS WITH THERMOCOUPLE PROBE 9 10 FROM TO STEPPER TO TRANSFORMER CONTROLLER THERMISTOR PROBE THERMOCOUPLE PROBE WHITE TEMPERATURE CALIBRATION Set dip switches per chart on page 43 Place a thermocouple from your test pyrometer through a hole in the center of the top finger Tip of pyrometer must not touch metal Set oven at 500 F 260 C and allow to preheat for 30 minutes Adjust temperature calibration pot so display agrees with your test meter Seal pot with Glyptol or nail polish If display will not adjust properly check your pyrometer f
12. 1106 All Model 1116 1117 S N 2011382 and Below Model 1130 1151 S N 2011382 and Below Model 1152 1158 S N 2011820 and Below Model 1160 1163 S N 2011977 and Below 369664 Coupling Center Model 1116 1117 S N 2011383 and Above Model 1130 1151 S N 2011383 and Above Model 1152 1158 S N 2011821 and Above Model 1160 1163 S N 2011978 and Above C 369269 Ball Plunger D 369268 Set Screw E 369223 Crumb Pan Right F 369224 Crumb Pan Left G 369666 Conveyor Frame Assembl H 369226 Pan Stop J 369516 Conveyor Bearino K 369514 Idler Shaft L 369515 Sprocket 369978 Set Screw M 369238 Drive Shaft N 369513 Hinge O 369510 Door Assembly Includes N P amp Q P 370016 Impinger Nameplate Q 369501 Door Latch amp Catch R 1123D Door with Window Includes N P amp Q S 369927 Window Frame Top T 369925 Glass Access Window U 369926 Window Frame Bottom W 369929 Retainer Window X 369165 Splice Clips Y 369194 Conveyor Belt Complete 369394 Conveyor Belt 1 Foot Section 68 Impinger Il 1100 Series Service Manual Domestic BLOW UP CONVEYOR amp DOOR 1100 SERIES Impinger Il 1100 Series Service Manual Domestic 69 1 1 AMP MODELS 369195 369335 1102 1132 1133 1134 1134 1135 1135 1136 1136 1150 1150 ABOVE S N 2003879 1151 1151 70 S 1 1 1 1 1 1 1 1 1 2 FUSE CHART FUSES 3 AMP 369013 DID NO PO RO PO T FUSEHOLDERS 10 AMP 10 AMP 369166 369014 36930
13. 120 VAC at terminal 2 of Time Delay Main Fan Relay Check continuity of 120 VAC coil Check for power to the relay coil 120 VAC Cooling Fans 120 VAC should now be at the fan motors If voltage is present check motors for shorts or opens WITH POWER OFF Check for locked rotor 18 Impinger II 1100 Series Service Manual Domestic Cooling fans continue to run after 20 minute cool Cooling Fan Thermostat Main Fan Relay Oven will not heat Gas Supply Main Fan Heat Switch Fuse 10 amp Fuseholder Centrifigual Switch of Main Fan Motor Oven Cavity High Limit Burner Blower Motor Control Box High Limit thermostat NOTE Discontinued S N 2011383 Centrifigual Switch of Burner Blower Motor Burner Transformer Ignition Control Impinger Il 1100 Series Service Manual Domestic Thermostat should close at 120 F 5 F and open at 100 F 5 F Check to insure that contacts of main fan relay are opening after 20 minute cool down Check for adequate gas supply and manual gas shut off valve is open Also check flexible gas line connection If not operating refer to Oven fan will not run Check for continuity replace if necessar Replace if necessary Replace if necessar Check for 120 VAC at lead 47 located at 6 pin connector in raceway near the main fan motor to neutral If no voltage is present and motor is running replace motor Terminals are normally closed opens at Thermostat 660 F
14. 3 VDC If this reading is not within required VDC place the test meter probes on terminals A and A The meter reading should be approximately 150 to 160 VDC and steady within approximately 4 to 5 VDC If the tach voltage is unsteady and the board output is steady check the coupling for loose set screws or any type of damage If the coupling checks good the tach is usually bad If the board voltage output is unsteady beyond limits then the board is probably bad Always check the speed pot Be sure it is okay before changing a board or tach This test is not always 100 accurate as this test is not performed at operating speeds However this test is the best method currently available Readjustment should always be attempted at least once before replacement See procedure for board adjustment on page 41 If the problem seems to be the motor or gearbox Check the brushes in the motor for excessive arching and or unusual wear Check the motor and gearbox from instruction located on page 26 under possible cause listing Conveyor gear motor Measure the transformer primary for a nominal 120 VAC input Measure the secondary voltage output which will be 12 5 to 15 VAC normally Recheck secondary output at rear of Time Temp Display Terminals 1 to 3 should read 12 5 to 15 VAC Terminals 1 to 2 and 2 to 3 should be 1 2 of the reading across 1 to 3 If you do not get the above secondary readings replace the transformer If 120 VAC primary
15. HILIMDUNILGE di Na HOLOM 926 CdR 51 HOLIDVAVI VOLSNHJHL HL SNUYIK 1019 4 ALLA WO N3AO LYLSOWISZHL ELG AXT1dDO2ONH3H OL 3 LFLSOWHSHL 07 724 FVL QL HOLINM dOYauns LOH FS HJWHCJSNVHL anid LOO NJ RD 1009 0109 LOG HAAS Impinger Il 1100 Series Service Manual Domestic SCHEMATIC 1116 1117 S N 2011383 8 BELOW SJ td 10 SCHEMATIC 1116 1117 S N 2011384 8 ABOVE 1111 9111 513404 O a 4715H W NOLLYHNSTINOO NOTLYHNS CANDO 9 150084 Nid 9NISDOH L3XJUS 4 byr E ESS SEE 1631497 HUAJANQJ Svare O8 N03 213345 Tid SHJ MNN SHIM HIAYDJENYEL NOVA SATVA 911 10934 IMYHIMMIL JAWA 32018 WN NOL ING 510 31 AYT SIT 4831 3811 ATGHASSY 104 SHNLVHIdKAL SILMNIH OG 120 83811 79902134439 40108 NJAQ 1145 tit LO YAQ ZL 71 1 TN IHMOJGNYYL 1 in ul TENET HLN32 d340 TB ENC AS HOA JANJI NYJ 5280 Nyd NIAJ uv3d 9411002 YING TE waned 2 1 083 9411907 21185 HILING
16. VAC coil Check for power to relay coil 120 VAC Check for 208 240 VAC to the relay erminals Main Fan Motor Check for opens shorts or grounds WITH POWER OFF Turn fan blade to check for locked rotor Check for opens shorts or grounds No control box cooling Check for main fan operation If not operating refer to Oven fan will not run Cooling Fan Motor 120 VAC hould be present at the fan motor If voltage is present heck for opens or shorts WITH POWER OFF Check or locked rotor of the fan motor No main fan cool down Cool Down Thermostat Check cool down thermostat thermostat closes at 160 F and opens at 140 F Check for power 120 VAC at cool down thermostat With cool down thermostat preheated heck for continuity If switch is open replace Oven will not heat for main fan operation If it is not operating refer o Oven fan will not run High Limit Thermostat Oven erminals are normally closed If open reset the Cavity hermostat and test for proper operation If it will not reset and hold then replace ith switch on check for 120 VAC on both terminals to neutral Replace if defective Air Pressure Switch his normally open switch should close when the main an is activated If adjustment is necessary Refer to Section D Replace if defective emperature Control Check for 120 VAC supply at terminal 11 to neutral on emperature control If no voltage is present trace wiring back to 3 amp fus
17. for F On for C 1 With conveyor running set conveyor speed control so Time Temp Display indicates 5 00 minutes Place a pan on the conveyor measure STOPWATCH the time SPEED OF PAN of the leading edge in to leading edge out of oven Turn the time adjustment pot on the rear of the Time Temp Display so display agrees with time measured by the stop watch 2 Turn conveyor speed control fully counterclockwise and adjust the stepper control maximum speed pot refer to drawing Pg D 19 so the display indicates 50 seconds 3 Turn conveyor speed control fully clockwise and adjust the stepper control minimum speed pot so the display indicates 30 minutes NOTE Repeat 4 and 5 to be sure settings are accurate 4 Turn power off and set 1 dip switch to its ON OFF other position and verify that the conveyor reverses direction when power is applied Set conveyor travel direction as customer requests CAUTION ALWAYS REMOVE POWER BEFORE CHANGING CONVEYOR DIRECTION Impinger Il 1100 Series Service Manual Domestic 47 TO REVERSE CONVEYOR DIRECTION ON STEPPER DRIVE SYSTEM Shut off power at main breaker Remove conveyor Remove front control box cover Change position of dip switch 1 on stepper control board as described on page 46 Reassemble in reverse order ORDNE TRANSFORMER STEPPER MOTOR CONTROL Shut off power at main breaker Remove conveyor Remove front cover Disconnect transformer wire harness Remove two 2 mou
18. if stable within 0 5 VDC Repeat at 35 VDC Check speed of conveyor and adjust time temp display if necessary Seal pots with Glyptol or nail polish STYLE 2 AND STYLE 3 CONTROL BOARD ADJUSTMENT NOTE A digital meter must be used ms CO 10 11 Voltage at L1 L2 terminals of the control board is to be 120 VAC 10 Turn the speed control pot on oven control panel to its maximum speed setting Adjust the MAX pot so the voltmeter indicates 15 8 to 15 9 VDC Turn the speed control pot to its minimum speed setting Adjust the MIN pot so the volt meter indicates 0 7 to 0 9 VDC Reset the speed control pot to its maximum speed setting and check if voltage is still at 15 8 to 15 9 VDC Readjust if necessary Reset the speed control pot to its minimum speed setting and check if voltage is still at 0 7 to 0 9 VDC Readjust if necessary If readjustment of either the MAX or MIN pot was necessary the opposite must always be checked until both MIN and MAX are in proper adjustment Measure the speed of the conveyor and adjust the time temp display if necessary Seal pots with Glyptol or nail polish NOTE Occasionally a new board Style 2 and 3 only is so far out of adjustment that you will be unable to adjust to the correct voltage To correct turn both the MAX and MIN pots 10 turns in either direction and then 5 turns in opposite direction This will center the pots and allow them to
19. is experienced such as a rolling of numbers or lock up at a given number first check for a display circuit lock up This can be caused by a voltage spike or surge in the incoming power lines To eliminate this condition remove power from the time temp display by shutting off the main fan switch for 15 seconds or if display stays on older models circuit breaker interruption may be required This should eliminate the problem If the problem continues jumper the two fuses in the red wires leading from the 12 6 VAC transformer to the display on older units If this does not solve the problem it may be coming in through the commercial power lines Suggest that customer contact his power company for evaluation Perform the power supply check the thermistor probe check and then perform the time temp simulator test Refer to Removal Installation and Adjustment section for instructions see page 42 Remember when using the time temp simulator remove all the leads from the back of the display except the 3 power leads After completion of this test and if reinstalling display back into the oven the dip switches must be reset for oven operation Perform all checks as in the above evaluation If the time check is okay or inoperative refer to the next section optical encoder Optical Encoder The above time temp test should have already been performed Remove dust cover from the gear motor and inspect the coupling and encoder dis
20. of the test and if re installing time temp display back in the oven the dip switches must be reset for oven operation and the time temp display must be re calibrated If readings are not achieved replace display Time Display inaccurate Perform all checks as in the above evaluation If the time erratic or inoperative check is okay refer to the next section Conveyor Drive Stepper Check to see if the conveyor drive stepper motor is Motor running If motor is not running refer to Conveyor will not run on page 29 Magnet Check to insure that the magnet cemented to shaft of conveyor drive stepper motor has not been damaged Hall Effect Sensor Check for any physical damage to Hall Effect sensor mounted on conveyor drive stepper motor Check all wiring and connections for damage If the motor is running the magnet is in place but the display shows the Hall Effect Sensor may be defective or improperly connected Conveyor Drive Stepper Check all connections for tightness or proper location Control and check all wiring for visible damage Replace as needed If there is still no time display and all the above have checked out replace the stepper control 30 Impinger Il 1100 Series Service Manual Domestic REMOVAL INSTALLATION AND ADJUSTMENT IMPINGER II CONVEYOR OVEN MOTOR MAIN FAN co Shut off power at main breaker Disconnect motor wiring of main fan motor note wir
21. 1 des 3611731410308 341 r 11817 I LSOREFH SED GOL 5511022 X08 TOELNDI IVISOKEIHL 0 HOLIMS SES AE SART p u t t TOHINDI 3UNLVHIdHIL 2140419978 3 H311MS ADSZ 02 81 312 8 4 238 AY 138 32018 35078 NADO 1002 3 18415 NJAO AVT3H TYNIKHIL i ND 129 91510 1838313 9NI IY3H 11068181510 55 106 1051403 S a BOLIIVdYI HILIMS 3810553983 HIV SLIHA 17 Impinger Il 1100 Series Service Manual Domestic TROUBLESHOOTING GUIDE 1116 1117 GAS OVENS MODEL 1116 NATURAL GAS 120VAC 60 HZ 1 PHASE MODEL 1117 L P GAS 120VAC 60 HZ 1 PHASE REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS SYMPTOM POSSIBLE CAUSE EVALUATION Oven fan will not run Incoming Power Supply Check breakers Reset if required Check power plug to be sure it is firmly in receptacle Measure incoming power call Power Co if needed Main Fan Switch Check continuity between switch terminal 20 Minute Time Delay Check for 120 VAC at terminal 1 to neutral on 20 minute Time Delay Relay If no voltage is present trace wiring back to power source If voltage is present at terminal 1 check for 120 VAC at terminal 2 to neutral If no voltage is present and Main Fan Switch is closed replace Ti
22. 120 VAC at terminal 2 to neutral while oven is on Turn off the main fan switch 120 VAC should continue to be present for 20 minutes If voltage is not present for approx 20 minutes replace the timer ali Fer remain closed during the 20 minute cool down minute cool down off 20 Minute Time Delay 120 VAC at terminal 2 should discontinue approximately 20 minutes after main fan is switched off If the oven start relay contacts are open and the voltage continues at terminal 2 of the 20 minute timer for more than 20 minutes replace the timer Oven fan will not run Incoming Power Supply Check circuit breakers Reset if required Call Power coil is de energized 20 Minute Time Delay NOTE ON OFF operation of the fan switch will set the timer to 20 minutes If the timer is accidentally reset turn off main breaker for 15 seconds to cancel 24 Impinger II 1100 Series Service Manual Domestic No control box cooling Check for main fan operation If not operating refer to Oven Fan Will Not Run Oven Start Relay Check relay contacts 120 VAC should be present Cooling Fan Motor s 120 VAC should be present at the fan motor If voltage is present check for opens or shorts WITH POWER OFF Check for locked rotor of the fan motor No automatic control Thermostat Cooling Check the cooling fan thermostat box cooling Fan Thermostat closes at 120 F and opens at 100 F With the cooling fan the
23. 130 1131 1132 1133 1134 1135 1136 1151 1160 1161 1162 1163 369127 For Models 1100 1101 1102 1103 1104 1105 1106 N 369832 Back Cover O 369583 Thermostat High Limit For Model 1150 P 369772 Terminal Block Q 370062 Electrical Box R 370063 Cover S Fuses See Chart On Page 70 T Fuse Holders See Chart On Page 70 U 369007 Thermostat Cool Down For Models 1100 1101 Impinger Il 1100 Series Service Manual Domestic BLOW UP CONTROL COMPARTMENT REAR 1100 1106 1130 1136 1150 1151 S N 2011373 amp BELOW 1160 1163 S N 2011978 amp BELOW u 22 ee Impinger II 1100 Series Service Manual Domestic 57 58 PARTS CONTROL COMPARTMENT REAR 1130 1136 1150 1151 S N2011383 AND LETTER P N 369186 369188 369185 369187 369120 369178 354258 354257 369124 369331 370062 370063 Fuses Fuse Holders 369200 369603 369268 369664 369269 369611 357067 369583 369192 353014 369682 ABOVE 1160 1163 S N 3011978 AND ABOVE DESCRIPTION Terminal Block End For 1 Phase Models For 3 Phase Models Terminal Block 1 Phase Models 3 Required 3 Phase Models 4 Required Contactor 1 Phase 2 Pole 3 Phase 3 Pole Transformer For Models 1134 1135 1136 1150 Transformer For Model 1151 Onl Cooling Fan Finger Guard Electrical Box Cover See Chart On Page 70 See Chart On Page 70
24. 16 1117 S N 2011383 8 ABOVE 63 PARTS OVEN BACK ASSEMBLY 1100 SERIES uuu l bee ete 64 BLOW UP 7 OVEN BACK ASSEMBLY 1100 SERIES UR u SR seende tees pas 65 PARTS GEARMOTOR ASSEMBLY 1100 SERIES L ge seddelen 66 BLOW UP FGEARMOTOR ASSEMBLY 1100 SERIES sumti fade 67 PARIS CONVEYOR S DOOR 1100 SERIES ae 68 BELOW UP CONVEYOR amp DOOR 1100 SERIE Aves 69 2 Impinger Il 1100 Series Service Manual Domestic SEQUENCE OF OPERATIONS 1100 THRU 1103 MODEL 1100 ELECTRIC 120 208 60 HZ 1 PHASE MODEL 1101 ELECTRIC 120 240 60 HZ 1 PHASE MODEL 1102 ELECTRIC 120 208 60 HZ 3 PHASE MODEL 1103 ELECTRIC 120 240 VAC 60 HZ 3 PHASE POWER SUPPLY Electrical Power to be supplied to the oven by a four conductor cord set on single phase and a five conductor cord set on three phase Voltage from the black conductor to the white conductor is120 VAC Black conductor is Hot Red conductor is Hot Orange conductor is Hot Used on 3 only White conductor is dedicated neutral Green conductor is ground MAIN FAN CIRCUIT HEATER CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE TIME TEMP DISPLAY AUTOMATIC COOL DOWN Power is permanently supplied to the normally open contacts of the main fan relay through a 10A fuse to the normally open cool down thermostat and to the normally open main fan switch Closing the
25. 3 should also be 1 2 of the reading from 1 to 3 Identify Display type a Type 1 has 6 dip switches and display case is 5 1 8 wide 12 8cm b Type 2 has 6 dip switches and display case is 5 5 8 wide 14 cm c Type 3 has 10 dip switches Set Dip Switches as follows 2 B 5 6 7 E 110 WITH POWER OFF Remove all leads from T T display except power input on 1 2 and 3 Install simulator to terminals 4 7 9 10 NOTE When on 50 Hz power dip switch number 2 must be on WITH POWER ON Turn time and temperature adjustment pot fully counter clockwise Display should read wait 15 seconds after turning ooo o SPEED TEMPERATURE 1 9 30 10 SEC 475 10 TYPE 2 9 20 10 SEC HHH TYPE 3 9 35 10 SEC 635 10 F Turn time and temperature pot fully clockwise Display should read wait 15 seconds after turning SPEED TEMPERATURE TYPE 1 10 20 10 SEC 615 108 TYPE 2 10 10 10 SEC 475 10 For performance test turn time pot to 10 00 and temp adjustment pot 540 10 F a Time reading on display of 10 00 should not fluctuate more than 5 seconds b Temperature on display reading should not fluctuate SWITCH ON OFF Ot ae Ses Shut off power at main breaker Remove conveyor Remove front control compartment cover Remove wires from switch and mark for reassembly Depress spring clips on the side of switch and push out Reinstal
26. 4 369012 369129 357107 2 2 2 1 1 1 PO PO NO PO POT mA DO PO PO N Impinger Il 1100 Series Service Manual Domestic This page intentionally left blank Impinger Il 1100 Series Service Manual Domestic 71 72 9 Lincoln 2 lt STAR CERTIFIED SERVICE AND PARTS Impinger Il 1100 Series Service Manual Domestic
27. 41409 18 5088381 OULNOD 0 2 73503 Ed LY3H S340 ES 3504 21414 HOAJANOI HJLIMS 25 VOYINOO 38MLVHFdWIL 21NOW 2373 211 E Nyd N340 HILIAG LS ATENISSY 104 42 m ACSZ WOZ 02 91 3104103338 339 7051405 HOA3ANO3 93 SH31Y7H 1723 EN OW S A HOLID d a 12 35018 TE ETE 3207 33078 1002 8 LUVLS NJAO Av 13H Zy 21155 38055384 HIV 54 NN 3380 1834373 9 1193 1108181510 x 32v 18 66 Lux MONI yEBLOS N S 3 E 0808 262 65 Og 09 Impinger Il 1100 Series Service Manual Domestic 14 SCHEMATIC 1132 1133 S N 2011383 amp BELOW amp 1162 1163 S N 2011979 amp BELOW 2911 pue ZOLL CELL ZELL STIGON 02 31 VIN A 052 aW G2 MIME 239 520 YALIMOLINALOd 1400 911 F LL vo peii HOLSWIN INNIA 30 VELINDHIVA DESENE PUTO uua 128 2115 Ko sud peuseg SI sun UI I 1343 Inve psddinbs 0900002 spun priae 154 DNILVIH HOLME 1543 NVA HOLMS LA 418
28. 50 G 369248 Knob Speed Control H 369247 Shaft Lock 370046 Button Only J 369260 Switch On Off K 369167 Switch Display Set L 369680 Front Cover Assembly M 369152 Potentiometer Conveyor All models prior to S N 2011383 and Models 1160 thru 1163 prior to S N 2011978 369391 Potentiometer Conveyor S N 2011383 amp Up 1160 1163 S N 2011978 amp Up 369172 Display Time Temp 02 01 369128 Lamp Pilot P 369520 Potentiometer Temperature E O 369728 Temperature Control 369155 Conveyor Control All Models prior to S N 2011383 Except Model 1160 1163 prior to S N 2011978 369240 High Hat used with 369155 369509 Relay Cooling Fan Not Used On 1100 1106 369193 Thermistor Probe Yellow Leads 369131 Thermocouple Probe 1 Red amp 1 White Lead 369025 Air Pressure Switch 369189 Terminal Block 369508 Time Delay 20 Minute Not Used On Models 1100 1106 Z 369507 Thermostat Cooling Fan Not Used On Models AA 369640 Stepper Control Models 1130 thru 1136 1150 1151 BR S N 2011383 and Up Models 1160thru 1163 S N 2011978 and Up 369685 Drain Assembly 369605 Transformer Stepper Controller Impinger Il 1100 Series Service Manual Domestic BLOW UP CONTROL COMPARTMENT FRONT 1100 1106 1130 1136 1150 1151 1160 1163 Impinger Il 1100 Series Service Manual Domestic 54 PARTS CONTROL COMPARTMENT FRONT 1116 1117 LETTER P N DESCRIPTION 969536 GCordset C
29. 52 through 1158 the fan was attached to a metal box on rear of oven Metal box was removed first Newer ovens have fan mounted on inside of oven back and are removed from inside THERMOSTAT COOL DOWN Model 1100 1106 only SEL Shut off power at main breaker Remove conveyor Remove control compartment covers Remove 2 screws from holding bracket located in upper rear of the control compartment Remove the 2 leads and remove thermostat Reassemble in reverse order RELAY DPST Qu Mr Os Shut off power at main breaker Remove conveyor Remove front control compartment cover Remove leads and mark for reassembly Loosen mounting screws and remove Reassemble in reverse order THERMOSHETAT COOLING FAN 32 QT es en Tus Shut off power at main breaker Remove conveyor Remove front control compartment cover Remove lead wires and mark for reassembly Remove 2 screws and remove thermostat Reassemble in reverse order Impinger Il 1100 Series Service Manual Domestic MOTOR BURNER BLOWER This unit comes equipped to be used for other models of ovens For use on the Impinger II Series the mating plug with the loose wires may be discarded TO REMOVE BLOWER MOTOR IA ts 99 23 Shut off power at main breaker Remove conveyor Remove control compartment covers Disconnect the plug on blower motor Plastic locks on side of plug need to be depressed Remove three screws holding blower horn to b
30. Hot Red conductor is Hot Orange conductor is Hot Used on 3 only White conductor is dedicated neutral Green conductor is ground NOTE A 20 Amp Receptacle NEMA STYLE L6 20 is provided on Models 1160 1161 1162 and 1163 for accessory plug in Rated at 208 or 240 VAC When the temperature in the control box reaches 120 F 3 F 48 9 F 1 7 the Cooling Fan Thermostat will switch power to the Cooling Fans The thermostat will interrupt power to the fans when the temperature falls to 100 F 3 F 37 C 1 7 Electrical power is permanently supplied through a 10 amp fuse to terminal 1 of the 20 Minute Timer through the normally closed Hi Limit Thermostat to the fan switch Closing fan switch energizes the coil of the oven start relay its contacts close enabling the 20 minute time delay module The 20 minute time delay module supplies 120 VAC to the oven fan relay these normally open contacts now close supplying 208 240 VAC to the main fan motor The cooling fans are also energized Closing the fan switch also supplies 120 VAC to the Heater Switch Conveyor Switch and the display Transformer Closing the Heat Switch supplies 120 V AC through the normally open Air Pressure Switch closed by air pressure from the Main Fan the 3 Amp Fuse to L1 terminal of the Temperature Control Board and the Heat Indicator Light Closing the Heat Switch supplies 120 VAC to the Electronic Temperature Control The 2 5K ohm Potentiometer is adj
31. IH 1 HAS NESS IANA WIL HOSNIS 193433 TWH SH Mr OBS 38082 AL 31400 21 21 624 9 82031 S1N3H3 S HK LIMIT 4914 1ViSQMHdML 7 24 VE 1081400 3574 Fi SN 00 208102 1v 5O4H3HL i YE 1091402 73604 Ej 193H HJLIMS ES Y2 90108 NYJ 350 44114 J0AJANOD HOLINS 25 Ou D NOHLIITI 213 NY4 NJAO HOLIMS 15 3558 106 HOA3ANOJ dd 80124103 EH 7051807 22 009 8 14415 N3AG AVTSM ZH 44 S 0129499 12 339 8 WNI 12078 HOLOW NYJ NJAQ 49738 iH 3unc53ud TYNIHHIL 0 110881610 HIMSAd 1 943718 SNL LVIH MC ILAG 51510 13 Impinger Il 1100 Series Service Manual Domestic SCHEMATIC 1160 1161 S N 2011978 amp ABOVE 5010 NYJ AYT34 S SHJEKNN 34IM MOLOM LOLL pue 0911 513 MINMDJENVEL ZYK NYa 9417002 HOLOH 1 2 GHBE SHIL LHX NYJ LH 4431 3811 1141 LINDY W 11883554 10d 801 4831 dl HOLVYIFONE HILYIH 1 OG ANTAG 33811 OL WOSNSS 123441 SH P 37140030883H1 21 524 9 0091 61424573 ONILYSH H LIWTT 71715068381 L 71031402 sunivu3dH3l 3503 FJ R 911100 710
32. ITH POWER OFF Turn the motor shaft to check for jammed gear box Check motor windings Ohm readings on motor terminal 1 5 2 6 3 7 4 8 each reading should be approximately 2 ohms If motor shaft will not turn replace conveyor drive stepper motor Measure the transformer primary for a nominal 120 VAC input if voltage is not present trace wiring back to the oven power source Measure the secondary output which will normally be 12 15 VAC Voltage across terminals 1 and 3 on the time temp display should read 12 15 VAC Terminals 1 2 and 2 3 should be 1 2 the voltage reading to 1 3 If the above secondary readings are not achieved replace transformer If proper voltage is present at terminals 1 2 and 3 on time temp display but the display is not lighted recheck all connections for tightness If time temp display is still not operating replace the time temp display Place the thermocouple of a pyrometer into the center of the top finger Be sure the tip of the thermocouple is not touching metal The pyrometer will indicate oven temperature Thermistor Probe Disconnect the thermistor probe leads from the Impinger II 1100 Series Service Manual Domestic 29 time temp display terminals 9 and 10 Measure the resistance of the thermistor probe See chart on page 44 showing probe resistance at various oven temperatures If these readings are not achieved replace the thermistor probe Thermocouple Probe Place your pyrom
33. MARKED 2 5 K OHMS WITH GREEN GOLD OR SILVER DOT L 1120 VAC THERMOCOUPLE TYPE J Impinger Il 1100 Series Service Manual Domestic POTENTIOMETER TRANSFORMER 2 5 K OHM MARKED IN BLUE L 1 120 THERMOCOUPLE TYPE J POTENTIOMETER TRANSFORMER MARKED IN RED L 1120 THERMOCOUPLE TYPE J THIS BOARD DISCONTINUED AT S N 2000932 TEMPERATURE CONTROL POTENTIOMETER 0 2 5K OHMS 1 TURN Shut off power at main breaker Remove front control box cover Loosen and remove temperature control knob Remove hex nut and washer then remove pot from rear of compartment Remove and mark wiring for replacement Replace in reverse order 7 Recalibrate the dial See Temperature Control OO DDE THERMOCOUPLE PROBE The sensor bulb is located in the oven compartment behind the lower finger and held in position by a wire form holder CAUTION ALLOW OVEN TO COOL Shut off power Remove conveyor and lower finger Remove control compartment covers Remove sensor bulb from the wire form holder pull thermocouple out of the oven through the access tube and disconnect leads from terminals 6 and 7 of the temperature control board 5 To install push thermocouple bulb through the access tube and place in wire form holder Be sure that wire form holder is exerting enough pressure on the sensor bulb to hold it in place If sensor bulb is not held securely replace the wire form holder or bend the holder slight
34. METER Black to 4 To T T display White to 7 TIME TEMP 1 With power off the five 5 dip switches located on the conveyor control see drawing above should be set as below 46 Impinger Il 1100 Series Service Manual Domestic DIP SWITCHES FOR 50 SEC TO 30 MIN TIMES 2 SWITCH POSITION OFF DIP SWITCHES FOR 23 SEC TO 30 MIN TIMES CONTROL 2 SWITCH POSITION ON OFF 1 With power off the ten 10 dip switches located on rear of Time Temp Display see drawing on page 43 should be set as below NOTE For time temp displays using a thermister 2 yellow wires on Terminals 9 amp 10 set the dip switches as follows FOR 50 SEC TO 30 MIN CONVEYOR TIMES DISPLAY 1 2 3 4 5 6 7 8 9 10 SWITCH POSITION OFF OFF OFF ON OFF ON For time temp displays using a thermocouple red wire on 9 and white wire on 10 set the dip switches as follows DISPLAY py Oe qne 14 18 SWITCH POSITION Off for F On for C FOR 23 SEC TO 30 MIN CONVEYOR TIMES NOTE For time temp displays using a thermistor 2 yellow wires on Terminals 9 amp 10 set the dip switches as follows DISPLAY i 2 3 14 ls de 7 e 19 io SWITCH POSITION SWITCH 2 OFF FOR 60HZ ON FOR 50HZ SWITCH 3 OFF FOR F ON FOR C For time temp displays using a thermocouple red wire on 9 and white wire on 10 set the dip switches as follows DISPLAY a 13 12 ds 6 7 lio SWITCH POSITION Off
35. MS FS dW3 44 div EO UINYILG go ves 022496 Lied snid 921696 134 HOLMS 4504 Yd WOLOW NY4 ADLE 4 OLIO 13 16848 DMUY3H HOLIMS FS div y ul LAT HUM ALIAVD NJAO LYLSOMESHI ELE peddinbe r tu due 0360002 18118 EU 1548 NIYA HOLAS 1 SJOHLNOI ONY NIYI 21 3904 24 LVLSOMKIHL ILE ONNODS ZW HOLOM Nid OL 3903 4 HY HOLDS SCHEMATIC 1130 1131 S N 2011383 amp BELOW amp 1160 1161 S N 2011978 amp BELOW I o y y 1 1 td 1 x1 039 pg zu iT Ed 22 94 83 H3NHOJSNYHL 547 100 104 0109 100 HAAS SI 15 118 ZLE ie oo di Impinger II 1100 Series Service Manual Domestic 12 SCHEMATIC 1130 1131 S N 2011384 amp ABOVE LELL DELL ST3GONW SYJ HAN 3518 X MOAZANO HOLOW E HX NYJ 9411002 MOLOW rh EM HILL HINYDASMYYL Nyd N3AQ HOLOM LH Z INIL 1 1 H EN 104 HNL vaada dl HO_LVOIONI HILV
36. ODEL 1131 1161 120 240 VAC SINGLE PHASE 60 HZ MODEL 1132 1162 120 208 THREE PHASE 60 HZ MODEL 1133 1163 120 240 VAC THREE PHASE 60 HZ REFER TO PROPER SCHEMATIC FOR INDENTIFIED COMPONENTS SYMPTON POSSIBLE CAUSE EVALUATION Co if needed NOTE On Models 1160 1161 1162 and 1163 disconnect any accessory from receptacle in the rear of the oven and check for shorts or overloads Fuses 10 Amp Check replace if necessary Fuseholder Check replace if necessary High Limit Thermostat Oven Terminals are normally closed If open reset the Cavity thermostat and test for proper operation If it will not reset and hold replace thermostat Switch Main Fan Check for continuity between switch terminals Relay Oven Start Check for continuity at relay coil and visually check for pull in of contacts 20 Minute Time Delay Check for 120 VAC at terminal 1 to neutral on 20 minute Time Delay Relay If no voltage is present trace wiring back to 10A fuse If voltage is present at terminal 1 check for 120 VAC at terminal 2 to neutral If no voltage is present and oven start relay is closed replace Time Delay Main Fan Relay Check for 120 VAC to coil of the Relay If no voltage is present trace wiring back to 20 minute Time Delay Relay If voltage is present check to insure contacts are closing OFF Turn fan blade to check for locked rotor No main fan cool down 20 Minute Time Delay Check for
37. SERVICE MANUAL DOMESTIC IMPINGER CONVEYOR OVENS MODEL 1100 SERIES 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 9511 www lincolnfp com DN 7 lt PM SERVICE AND PARTS 1100svcdom REV 1 5 07 TABLE OF CONTENTS SEQUENCE OF OPERATIONS NUT TOS ae 3 SEQUENCE OF OPERATIONS TITT 4 SEQUENCE OF OPERATIONS 113305 vb s E NE ohio 6 SCHEMA EUG 1100 11 cr a acta ci ie A 8 SOHEMA FHG ATOZ tut rete aco br eM A eese ap 9 SGHEMATIG 1116 gt 11178N 20113834 BELOW ua 10 SCHEMATIG 1116 1117 SAN 201384 S ABOVE aa 11 SCHEMATIC 1130 1131 S N 2011383 amp BELOW 4 1160 1161 S N 2011978 amp BELOW 12 SCHEMATIC 1130 1131 S N 2011384 amp ABOVE us 13 SCHEMATIC 1160 1 1615N 2011978 amp ABOVE sr 14 SCHEMATIC 1132 1133 S N 2011383 amp BELOW amp 1162 1163 S N 2011979 amp BELOW 15 SCHEMATIC T1392 1133 5 2011384 4 ABOVE 16 SCHEMATIC 1162 1163 S N 2011978 amp ABOVE 17 TROUBLESHOOTING GUIDE 116 Ture Ge 18 TROUBLESHOOTING GUIDE 1100 THRU 1103 22 TROUBLESHOOTING GUIDE 1130 THRU 1133 1160 THRU 1163
38. and on the white lead P2 Rotating the pot slowly from low to high the meter reading should show an even transition from 0 to 5 K ohms 5 There should be no dead or open spots through out the 10 turns of the pot Check all three leads to ground There should be no continuity to ground If any of the above checks fail replace the pot Check for 120 VAC input to the control board at terminals L1 and L2 If not present check the conveyor switch and wiring back to 3 amp fuse and then back to power source if necessary If 120 VAC is present at L1 and L2 check the VDC output at terminals A and A If a DC voltage is not present check the 4 amp and the 1 amp fuses on thecontrol board If 120 VAC is present at terminals L1 and L2 but DC Voltage is not present at A and A providing the fuses are good replace the board If DC voltage is present at A and A but motor does not run check gear motor as follows If DC voltage is present at A and A and the motor does not run first check the mini breaker and then the conveyor As described below under conveyor WITH POWER OFF Check the leads to the motor for evidence of any shorts or opens and each lead to ground Remove dust cover from the top of the motor and rotate motor shaft to determine if there is a locked rotor or a locked gear box use care so encoder disc is not damaged If the motor fails the above tests replace motor Check for any mechanical misalignment or improper adj
39. at Control Box High Limit Cooling Fan Cooling Fan Cordset Ground Lug Finger Guard Fuse 3 Amp Fuse Holder Fuse 10 Amp Fuse Holder Strain Relief Power Cord Mini Breaker 0 2 Amp Conveyor Coupling Complete Sleeve Only Coupling Ball Plunger Set Screw Impinger Il 1100 Series Service Manual Domestic BLOW UP CONTROL COMPARTMENT REAR 1116 1117 S N 2000200 TO 2011383 v r Impinger II 1100 Series Service Manual Domestic 61 PARTS CONTROL COMPARTMENT REAR 1116 1117 S N 2011383 amp ABOVE LETTER P N DESCRIPTION A 369682 B 369901 C 369398 D 369566 369524 E 369552 F 369263 G 369556 369557 H 369561 369562 369559 J 369568 369938 K 369401 L 369366 M 369124 N 369331 357067 369192 369537 R 369538 5 369129 369166 T 369012 369013 U 353014 V 369603 W 369268 X 369664 Y 369611 Z 369269 Impinger Il 1100 Series Service Manual Domestic BLOW UP CONTROL COMPARTMENT REAR 1116 1117 S N 2011383 amp ABOVE 63 Impinger Il 1100 Series Service Manual Domestic 64 PARTS OVEN BACK ASSEMBLY 1100 SERIES LETTER DESCRIPTION E B Heating Element 208V Red Motor Main Fan 208 240V 60HZ Motor Main Fan 240V 50 HZ Motor Main Fan 120V 60 HZ 369695 Clamp Bracket Clamp Motor 369674 Rear Cover Assembly Electric Ovens S N 2011383 and Below 2019884 Above Rear Cover Assembly Model 1116 1117 S N 2011383 a
40. be calibrated If after this procedure the board will not adjust it is probably defective REVERSAL OF CONVEYOR BELT D C Motor All ovens leaving our plant are wired to operate conveyors from left to right To reverse conveyor direction use the following procedure Ol mE y ss Turn off power and remove conveyor Remove front control compartment cover Refer to control board drawing to identify terminal connections Reverse wires fastened to terminals A and A Reverse wires fastened to terminals T1 and T2 Both set of leads must be reversed or oven will run at maximum speed with no speed adjustment possible POTENTIOMETER CONVEYOR SPEED CONTROL 1 2 Turn off power Remove conveyor Impinger II 1100 Series Service Manual Domestic 41 Pr H dd Remove front control compartment cover Remove adjustment knob Two allen set screws Remove exterior friction shaft retainer from pot shaft Turn counter clockwise to loosen Remove pot shaft from hole and disconnect leads from motor control board Assemble in reverse order If a new pot is installed the motor control board must be calibrated MINI BREAKER 0 2 AMP DR Shut off power at main breaker Remove conveyor Remove control box covers Remove knurled mounting ring and disconnect wiring Reassemble in reverse order Push button to set BEARING CONVEYOR eS Remove conveyor from oven and place on a flat work surface Remove c
41. c The coupling set screws should be tight and not slipping on the motor shaft or the tach generator shaft The encoder disc should be firmly attached to the coupling and not warped Check the positioning of the optical encoder disc The disc should not be touching the optical encoder assembly and the encoder assembly should be mounted so it is squarely facing the coupling shaft This is to allow the infrared light beams to be broken by the encoder disc If all this is okay then replace the optical encoder assembly 28 Impinger Il 1100 Series Service Manual Domestic STEPPER MOTOR DRIVE Conveyor will not run Conveyor Switch Conveyor Fuse Fuseholder Conveyor Control Stepper Transformer Check for 120 VAC to conveyor switch If no voltage is present trace wiring back to the oven power source WITH POWER OFF Check continuity between switch terminals Check replace if necessary Not used on Model 1151 Check replace if necessary Check for 120 VAC supply to primary of transformer if voltage is not present trace wiring back to the fuseholder If voltage is present check for output voltage from the transformer secondary NOTE This control transformer outputs 2 secondary voltages Red Leads 29 VAC Brown Leads 10 VAC If BOTH secondary voltages are not present replace the transformer Speed Adjustment Potentiometer Conveyor Motor Stepper Control Conveyor Drive Stepper Motor Time T
42. d by a color marked on the transformer either RED BLUE GREEN GOLD OR A SILVER DOT Refer to Pages 34 amp 35 showing proper wiring connection NOTE When mounting a new temperature control board DO NOT over tighten the two Mounting screws Turn the potentiometer fully counterclockwise Loosen the Dial Knob set screw and position the 50 F mark at the pointer NOTE The thermocouple of your test meter should be inserted through a finger hole in the top center of the oven and the oven pre heated for 30 minutes to stabilize the oven at set temperature The thermocouple probe must not touch metal it must sense air temperature only Adjustment of the GREEN GOLD OR SILVER dot control board may be required when installing a new board Adjustment is seldom required on RED and BLUE boards For RED or BLUE control boards with the temperature control dial at maximum the reading on your temperature test meter should be between 555 F 290 C and 575 F 302 C If not at this temperature adjust pot P3 to achieve these figures Refer to page 35 For the GREEN GOLD OR SILVER dot control board place the test probe of your meter in position as indicated in prior note Set the oven temperature control dial 500 F 260 C adjust pot P6 see page 34 to achieve a temperature reading on test meter of 500 F 260 C CCW to increase CW to decrease Adjust Time Temp Display Pot Temp Cal for 500 F 260 C RED POTENTIOMETER TRANSFORMER
43. e Turn the temperature adjustment Knob to maximum temperature position and check for 120 VAC at the load terminal 9 and neutral If 120 AC is present and unit is not heating refer to Mercury Contactor for next check If 120 VAC is not present proceed hermocouple Probe ITH POWER ON AND THERMOCOUPLE LEADS ATTACHED TO THE TEMPERATURE CONTROL BOARD measure D C millivolt output of these leads Refer to thermocouple chart on page 36 for proper readings If these readings are not achieved replace hermocouple 22 Impinger II 1100 Series Service Manual Domestic emperature Control Potentiometer ITH POWER OFF remove the potentiometer leads rom the temperature control board and measure ohms rom black to white leads The reading should be from approximately 0 to 2 5k ohms as the dial of the potentiometer is turned throughout its full rotation From black to red leads the reading should be approximately 5k ohms constant throughout the full rotation of the ial If these readings are not achieved replace potentiometer If the thermocouple probe and the control potentiometer checks good then the problem is usually ith the temperature control board Mercury Contactor Check for 120 VAC to the contactor coil If voltage is present and contact will not activate replace the ontactor Also check each contactor for proper high oltage input and output Heater Elements Oven heats with switch Mercury Co
44. e Temp Display uses a Thermistor Probe to sense oven temperature The thermistor This resistance is then converted by the display into a temperature reading AUTOMATIC COOL DOWN When this oven is started the time delay relay timing circuit is enabled permitting the oven fans to run for approximately 20 minutes after the oven is shutoff to cool the oven The Time Delay Relay will keep the coil of the Main Fan Relay closed maintaining operation of main fan and Cooling Fan Motors Impinger Il 1100 Series Service Manual Domestic SEQUENCE OF OPERATIONS 1130 1133 amp 1160 1163 MODEL 1130 ELECTRIC 120 208 1 PHASE MODEL 1131 ELECTRIC 120 240 VAC 1 PHASE MODEL 1132 ELECTRIC 120 208 VAC PHASE MODEL 1133 ELECTRIC 120 240 VAC 3 PHASE MODEL 1160 ELECTRIC 120 208 1 PHASE MODEL 1161 ELECTRIC 120 240 VAC 1 PHASE MODEL 1162 ELECTRIC 120 208 VAC 3 PHASE MODEL 1163 ELECTRIC 120 240 VAC 3 PHASE POWER SUPPLY CONTROL BOX AUTO COOL DOWN MAIN FAN CIRCUIT HEATER CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE S N 2011383 and above Models 1130 through 1133 S N 2011978 and above Models 1160 through 1163 Refer to Page 26 TIME TEMP DISPLAY Electrical Power to be supplied to the oven by a four conductor service on single phase and a five conductor service on three phase Voltage from the black conductor to the white conductor is 120 VAC Black conductor is
45. e closest to the oven back 7 Position of the fan on the motor shaft will be 1 1 2 3 81cm from the top of the oven back cone to the bottom of the fan hub Refer to drawing The oven back must be removed to make this measurement 8 Align set screw with motor shaft flat and tighten 9 Reassemble in reverse order FAN SPIDER NOTE MEASUREMENT MUST BE MADE FROM CONE TO FAN SPIDER FAN HUB 1 1 2 INCH CONE gt Impinger II 1100 Series Service Manual Domestic 31 RELAY DPST QT TW Shut off power at main breaker Remove conveyor Remove control compartment covers Remove leads from relay and mark for reassembly Remove mounting screws and lift out relay Reassemble in reverse order TIME DELAY 20 MINUTE CO Shut off power at main breaker Remove conveyor Remove front control compartment cover Unplug all wires and mark for replacement Remove center mounting screw Reassemble in reverse order NOTE Do not over tighten the mounting screw as this may damage the internal potted electronic components COOLING FAN QUIT m Ius Shut off power at main breaker Remove conveyor Remove front control compartment cover Remove 4 screws from fan frame Remove fan and unplug female cord receptacle Reassemble in reverse order NOTE All current models have 2 of these cooling fans The second cooling fan is located in the rear of the rear control compartment On older models of the 1116 1117 11
46. e colors for reassembly and remove entire oven back from the oven Refer to main fan See Below for removal information Remove the main fan Remove 4 screws from the motor support assembly Remove the motor mounting clamp and pull the motor away from the oven back assembly Remove motor mounting fixture Install the motor in reverse order insuring that the motor shaft is centered in the Shaft tube of the oven back CAPACITOR MOTOR 1 Model 1100 1106 Capacitor is located under motor cover in rear of unit and held in place by a plastic wire tie Discharge capacitor remove and replace FOR ALL OTHER 1100 MODELS Capacitor is located under rear control box cover and held in place by a plastic wire tie MAIN FAN k Shut off power at main breaker 2 Remove motor cover from back of oven 3 Disconnect and mark motor wiring of main fan motor and remove entire oven back from oven NOTE Turning the oven back bolts back and forward while applying a spray lubricant or penetrating oil will help minimize breakage 4 Loosen and remove set screw in hub of fan 5 Remove fan The motor shaft has a flat making removal of fan fairly easy If trouble is encountered apply a spray lubricant or penetrating oil in set screw hole and on motor shaft NOTE This fan is balanced by the manufacturer and must be handled carefully Suggested storage is by suspending the fan through the shaft hole 6 Reinstall fan with the tips of the fan blad
47. e electrical leads from the solenoid valve Loosen the gas line union located near the burner and remove the gas valve and solenoid valve assembly 10 Finish removal of the gas piping from gas valve 11 Replace in reverse order 12 Check all gas fittings for leaks 13 Adjust the gas manifold pressure on the gas valve Refer to the specification plate on the oven for proper rating CON s SOLENOID VALVE Shut off power at main breaker Shut off gas supply Remove rear control box cover Disconnect wires from solenoid valve Mark wires for reassembly Loosen pipe union in piping assembly 36 Impinger Il 1100 Series Service Manual Domestic Or PN s 6 8 Remove 4 nuts from burner manifold remove valve assembly Remove piping from solenoid valve Reassemble in reverse order NOTE Some piping changes may be required See instructions supplied with replacement part HEATING ELEMENTS Shut off power at main breaker Remove back cover Disconnect motor wiring and mark for reassembly Remove oven back from oven Remove fan shroud Heater element may now be unbolted and removed Check heater elements to be sure they are the proper replacement Reassemble in reverse order NOTE Be sure the lead terminals are tight IGNITION CONTROL II Do VOD Shut off power at main breaker Shut of the gas supply in the main line to the oven Remove conveyor Remov
48. e the front control compartment cover Note After S N 2011383 a removable drip tray is located above the ignition control Disconnect the wires from the ignition control and mark their location for reinstallation Remove the 4 mounting screws and remove the control Reassemble in reverse order Turn on electrical power and gas supply then check the system for proper operation 26 VALVE xe 11 NEUTRAL GND 120 V YELLOW 120 V 25 V L1 32 YELLOW GND HOT BURNER GROUND 33 IGNITION CONTROL TRANSFORMER STEP DOWN 24 VAC aa Shut off power at the main breaker Remove conveyor Remove front control compartment cover Remove wires from transformer and mark for reassembly Remove 2 mounting screws and replace transformer Reassemble in reverse order BURNER VENTURI See Hot Surface Igniter Impinger Il 1100 Series Service Manual Domestic 37 HOT SURFACE IGNITER c IU Oe eS 11 Shut off the electrical power at main breaker Shut off the gas supply in the main line to the oven Remove conveyor Remove rear control compartment cover Remove Conveyor Motor Remove electrical plug from the burner cap Loosen the pipe union in the gas line Remove 3 screws holding burner cap to burner tube Pull out on burner cap removing cap and burner venturi 0 The hot surface igniter is held in place on the burner venturi by a screw loosen screw and remove igniter Replace in reverse order NOTE Care must be
49. educer gear box and the tach generator The tach generator is a DC voltage generator which supplies a voltage to the DC Motor Control Board which is used as a reference for maintaining a constant conveyor speed The secondary output of the Transformer is supplied to terminals 1 2 and 3 of the Time Temp Display The secondary output of the Transformer is nominally 12 5 to 15 VAC with a center tap The voltage from the center tap to each leg is 1 2 the secondary voltage The speed side of the Time Temp Display uses a slotted disc cemented to tach coupling to break the infra red light beam of the optical encoder mounted on gear motor producing electrical pulses that are transmitted to the display The display converts these pulses into a read out of minutes and seconds The temperature portion of the Time Temp Display thermistor outputs a resistance proportional to the oven temperature This resistance is then converted by the display into a temperature reading When the oven reaches operating temperature the normally open Oven Cool Down Thermostat closes After oven is switched OFF the Thermostat bypasses the Fan Switch keeping the Cooling Fan and Main Fan operating until the oven cools down to approximately 200 F 93 3 C Impinger II 1100 Series Service Manual Domestic SEQUENCE OF OPERATIONS 1116 1117 MODEL 1116 NATURAL GAS 120 VAC 60 HZ 1 PHASE MODEL 1117 L P GAS 120 60 HZ 1 PHASE POWER SUPPLY
50. emp Display inoperative 12 VAC Power Supply Transformer Time Temp Display Temp display out or inaccurate NOTE Time Temp displays use two types of temperature sensors thermistor probe 2 yellow wires thermocouple probe probe 1 red wire and 1 white wire This is a 0 to 50k ohm 10 turn potentiometer WITH POWER OFF remove the 3 pin potentiometer cable plug from the motor control board With a digital multimeter check the ohm reading across the red lead to the black lead this reading should be 50k ohms 5 as the potentiometer is rotated through its 10 turn rotation Place the meter leads on the red lead and white lead Rotating the potentiometer slowly from low to high the meter should show an even transition from 0 to 50k ohms 5 through the 10 turn rotation of the potentiometer There should be no dead or open spots through the 10 turns of the potentiometer Check all three leads to ground There should be no continuity to ground If any of the above checks fail replace the potentiometer NOTE if the conveyor drive motor becomes jammed the motor will stop turning To reset turn off conveyor switch wait 10 seconds and turn the conveyor switch on If the motor does not run check for 2 to 29 VAC across the motor terminals 1 to 2 and 3 to 5 on the conveyor motor control If voltage is not present at both sets of terminals replace control Check the drive sprocket on motor output shaft to insure that it is tight W
51. ers Remove two 2 wires from alarm note wire numbers and location Remove retainer cover from alarm and remove assembly from mounting bracket Reassemble in reverse order and check Impinger Il 1100 Series Service Manual Domestic 49 50 PARTS GENERAL 1100 SERIES LETTER P N DESCRIPTION 369390 4 Caster w Mounting Plate B 369502 Bottom Finger Cover x A BottomFingerHousng gt Columnating Plate See InstallOperations Manual __ 4969511 jOvenTo 2 396059 Conveyor Hole Cover Z3 L 369228 Conveyor Hole Cover M 369227 Catch Spring 1 3958 BallStud 4 12 969693 SpacerforBalStud 1 369225 Baffle gt P 3921 TEC Q 1308 GCrossSuppot R 369919 Stand Side Impinger Il 1100 Series Service Manual Domestic BLOW UP GENERAL 1100 SERIES Impinger Il 1100 Series Service Manual Domestic 51 PARTS CONTROL COMPARTMENT FRONT 1100 1106 1130 1136 1150 1151 1160 1163 A 369173 Transformer 12 6 B 369536 Cordset Cooling Fan C 369124 Cooling Fan D 350224 Lens Yellow 350225 Lens Red E 369522 Knob amp Dial Thermostat F 369669 Front Panel Label w Set Button Except 1150 369907 Front Panel Label w o Set Button Except 11
52. eter thermocouple into the center of the top finger Measure D C millivolts at terminals 9 and 10 on the time temp display See thermocouple chart on page 36 for proper readings Connect temperature meter to thermocouple at terminals 9 amp 10 on back of the time temp display Be sure to maintain proper polarity on thermocouple connections Compare actual oven temperature with the reading at the time temp display If the temperature readings match recalibrate or replace time temp display If the readings do not match replace thermocouple probe Power Supply If a strange or unusual behavior is experienced such as a rolling of numbers or lock up at a given number first check for a display circuit lock up This may be caused by a voltage spike or surge in the incoming power lines To eliminate this condition remove power from the time temp display by shutting off the main fan switch for 15 seconds This should eliminate the problem If this does not solve the problem it may becoming in through the Commercial power lines Suggest that customer contact their power company for evaluation Temp display Time Temp Display Perform the power supply check the thermistor probe inaccurate erratic or check and then perform the time temp simulator test inoperative Refer to page 45 for instructions Remember when using the time temp simulator remove all leads from the back of the time temp display except the 3 power leads After completion
53. fer to thermocouple chart on page 36 for proper readings If these readings are not achieved replace thermocouple Temperature Control WITH POWER OFF remove the potentiometer leads Potentiometer from the temperature control board and measure ohms from black to white leads The reading should be from approximately 0 to 2 5k ohms as the dial of the potentiometer is turned throughout its full rotation From black to red leads the reading should be approximately 2 5k ohms constant throughout the full rotation of the dial If these readings are not achieved replace the potentiometer If the thermocouple probe and the control potentiometer check good then the problem is usually with the temperature control board Mercury Contactor Check for 120 VAC to the contactor coil If voltage is present and the contactor will not activate replace the contactor Also check each contactor for proper high voltage input and output Heater Elements Check the Amp draw on each hot leg for proper load Check the specifications plate for rating information If the Amp draw is low or high check the individual elements for opens shorts and proper resistance WITH POWER OFF To check resistance of the elements remove all leads from the elements and use an accurate digital VOM The element resistance should be as follows 208V 27 ohms approximately Impinger Il 1100 Series Service Manual Domestic 24 0V 36 ohms approximately
54. he control compartment Remove the 2 leads and remove thermostat NOTE Push reset button Insure that aluminum probe and teflon washer are in place if applicable then reassemble in reverse order Insure that thermostat is in firm contact with the aluminum probe if applicable Impinger II 1100 Series Service Manual Domestic LAMP PILOT BURNER r P MS LENS PILOT LAMP Shut off power at main breaker Remove conveyor Remove front control compartment cover Remove terminals from pilot lamp Grasp body of the light assembly and slide to the side disengaging body from light lens Remove lens by pushing out from rear Reassemble in reverse order COUPLING CONVEYOR DRIVE FOR ALL 1100 MODELS UE Ts D This coupling has a plastic or rubber sleeve connecting two metal drive ends The metal drive end on the conveyor side is secured by a ball plunger screw PROCEDURE FOR ADJUSTING DRIVE COUPLING Place one metal end on conveyor shaft Install ball plunger and adjust so the spring loaded ball will drop into the dimple on the flat of the conveyor drive shaft To test apply pressure on metal end towards the conveyor The ball detent should pop up out of the dimple and coupling end will slide back to conveyor frame Place other drive end on motor shaft Push conveyor frame to front side of oven conveyor opening Adjust the metal drive end on conveyor shaft so ball detent is in the dimple Lift the convey
55. hieved replace potentiometer If the thermocouple probe and the control potentiometer check good then the problem is usually with the temperature control board If 120 VAC is present on the Valve temperature control board at load terminal 9 to neutral check for voltage at temperature regulation valve If voltage is present listen for valve to open and close Also check for opens or shorts in the coil Replace as necessary Conveyor speed varying or intermittent REFER TO PAGE 26 From S N 2011383 and up REFER TO PAGE 29 Time Temp Display inoperative REFER TO PAGE 27 From S N 2011383 and up REFER TO PAGE 29 Temp Display out or erratic REFER TO PAGE 27 From S N 2011383 and up REFER TO PAGE 29 Impinger Il 1100 Series Service Manual Domestic 21 TROUBLESHOOTING GUIDE 1100 THRU 1103 ELECTRIC OVENS MODEL 1100 120 208 VAC SINGLE PHASE 60 HZ MODEL 1101 120 240 VAC SINGLE PHASE 60 HZ MODEL 1102 120 208 THREE PHASE 60 HZ MODEL 1103 120 240 THREE PHASE 60 HZ REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS SYMPTON POSSIBLE CAUSE EVALUATION Oven fan will not run Incoming Power Supply Check circuit breakers Reset if required Call Power Co needed Fuses 10 Amp Check replace if necessary Fuseholder Check replace if necessary Switch Main Fan Check for continuity between switch terminals Main Fan Relay Check continuity of 120
56. ible gas hose is properly connected If gas is present at the oven and coils of gas valve are energized the gas valve is defective When 24 VAC is supplied to the gas control valve the red burner indicator Six seconds after the gas valve opens ignition must occur If flame is not detected the ignition control will shutoff and lock out To reset the ignition control turn off the burner switch for 45 seconds then turn on the burner switch to retry ignition The ignition control requires a minimum of 0 8 D C microamps To check flame sensing operation connect a digital multimeter capable of measuring D C micro amps between the ground terminal on ignition control and the ground lead NOTE This is a current measurement and the meter must be connected in series If these readings are not achieved check bypass orifice for obstructions If bypass orifice is clear replace the hot surface igniter flame sensor NOTE The D C micro amp test must be conducted with the oven in low flame bypass operation Turn the temperature control to the lowest setting Power Supply Ignition Control NOTE flame should be present at this time Low flame is on but no main flame Temperature Control 20 If there is sufficient micro amp current but the flame will not stay lit check for proper polarity of the 120 VAC power supply If there is sufficient micro amp current and the 120 VAC polarity is correct but the flame will no
57. is st 40 Impinger II 1100 Series Service Manual Domestic ON Install new control board and bracket Attach wires to their proper terminals refer to the drawings for proper terminal identification Perform calibration on the control board as specified using the calibration procedure for your style of board NOTE When a control board motor tach generator or speed adjustment potentiometer is replaced the control board must be calibrated When calibration of control board is complete seal the adjustment pots See Control Board Adjustment STYLE 1 CONTROL BOARD ADJUSTMENT NOTE A digital meter must be used for this adjustment OE IS er 10 11 Voltage at L1 and L2 terminals of the control board is to be 120 VAC 10 Connect a digital volt meter to terminals A and A set meter on 200 VDC scale Turn speed control pot on oven control panel to its maximum speed setting Turn MAX MIN and IR pots counter clockwise until they stop DO NOT turn CL pot Adjust TACH pot so the volt meter indicates 130 VDC 0 5 volts Adjust IR pot to read between 1 5 and 2 VDC above tach reading Example If tach reading would be 130 3 then adjust IR to between 131 8 VDC and 132 3 VDC Turn speed control pot to its minimum speed setting Adjust MIN pot so the voltmeter indicates between 6 and 10 VDC Turn speed control dial to obtain a reading of 22 VDC on your meter Observe for approx 30 seconds to see
58. l in reverse order TRANSFORMER STEP DOWN 120 VAC DNB SINE Shut off power at main breaker Remove Conveyor Remove control compartment covers Remove wires from transformer and mark for reassembly Remove 4 mounting screws from transformer base and replace Reassemble in reverse order Impinger II 1100 Series Service Manual Domestic 45 FUSEHOLDER Shut off power at main breaker Remove conveyor Remove control compartment covers Remove wires and mark for reassembly Remove fuseholder Reassemble in reverse order OU qw POWER CORD Shut off power at main breaker Remove conveyor Remove control compartment covers Unfasten and mark for reassembly power cord wires Remove locknut from strain relief and pull cord from oven Reassemble in reverse order Oo ae c STEPPER CONTROL REPLACEMENT ADJUSTMENT Removal and Installation Remove conveyor Remove control box cover front Remove three 3 screws from control assembly Disconnect wiring push on connectors from control board NOTE Proper location of connectors for reinstallation Reassemble in reverse order and check system operation Recalibrate conveyor control board Te po Do WARNING THIS CONTROL MUST NOT BE OPERATED WITH HEAT SINK DISCONNECTED OR BURNOUT WILL OCCUR IN SECONDS CURRENT SENSE DO NOT ADJUST Heat Sink Pee Ura Max Conveyor 2 Blue Red 23 Speed Adj Speed Adj Gray LOCKED ROTOR POTENTIO
59. ly to hold sensor bulb in place 6 Reconnect RED lead to terminal 7 and WHITE lead to terminal 6 7 Replace conveyor and fingers R DE Impinger Il 1100 Series Service Manual Domestic 35 THERMOCOUPLE MEASUREMENT CHART EXPLANATION The junction temperature is the ambient air temperature where the thermocouple fastens to the electronic temperature control board O V E N T E M 200 F 250 F 300 F 325 F 350 F 400 F 425 450 500 F 550 F 600 F 11 72 13 26 10 24 11 01 11 78 13 32 J 417 6 1091 12 U 88 6 10 97 12 51 N 10 26 11 08 12 57 11 09 12 63 T 729 506 960 1087 1114 1269 I 11 20 12 74 1126 12 80 767 3 66 11 32 12 86 520 6 135 12 523 6 12 11 46 E 155 18 M 11 61 13 15 11 66 1820 MERCURY CONTACTOR Shut off power at the main breaker Remove conveyor Remove control compartment covers Disconnect contactor wires and mark for reinstallation Remove screws from mounting bracket and replace contactor DIN 6 Reassemble in reverse order GAS VALVE Shut off power at main breaker Shut off the gas supply in the main line to the oven Disconnect the flexible gas hose Remove the control compartment covers Remove the manual gas shut off valve from piping Remove screws from the bulkhead plate located on rear of oven at the gas pipe Remove the section of gas pipe to gas valve Disconnect th
60. main fan switch energizes the coil of the main fan relay Its normally open contacts now close energizing the main fan motor Closing the main fan switch energizes the cooling fan the time temp transformer the heat and conveyor switches Closing the Heater Switch provides power through the normally open Air Pressure Switch through the 3 Amp Fuse to the Temperature Control Board and to the Heater Lamp Closing the Heat Switch supplies 120 VAC to the Electronic Temperature Control The 2 5K ohm Potentiometer is adjusted to achieve the desired temperature The Thermocouple will provide varying millivolts to the Temperature Control The temperature control board then supplies 120 VAC to the coil of the Contactor at intermittent intervals to maintain the desired temperature NOTE Units with Serial Number prior to 2000782 were equipped with a Fenwall Temperature Control and used a Temperature Control Potentiometer rated at 5K ohms Closing the Conveyor Switch supplies 120 VAC to the DC Motor Control Board at terminals L1 and L2 A C volts are converted to DC volts and are supplied to the Conveyor Motor at terminals A and A Adjustment of the Speed Control Potentiometer 5 000 ohm 10 turn will change resistance at terminals P1 P2 and P3varying the DC voltage to the Conveyor Motor The speed of the conveyor motor will increase or decrease as the DC voltage from the board increases or decreases respectively As the motor turns it drives both the r
61. me Delay Main Fan Relay Check for 120 VAC to coil of the Relay if no voltage is present trace wiring back to 20 minute Time Delay Relay If voltage is present check to insure contacts are closing Fuse 10 Amp Check replace if necessary Fuse Holder OFF turn fan blade to check for locked rotor Capacitor Check for shorts or grounds WARNING Capacitor has a stored charge discharge before testing No main fan cool down 20 Minute Time Delay Relay Check for 120 VAC at pin 2 and 3 while main fan is running Turn off main fan switch and 120 VAG should continue to be present for 20 minutes at terminal 2 Main fan runs after 20 Main Fan Relay Check if relay is operating and terminals are remaining minute cool down closed for main fan cool down of 20 minutes NOTE The time delay relay will keep the coil of main fa 20 minute cool down closed maintaining main fan operation for cool down fo approximately 20 minutes Time Delay Relay 120 VAC at terminal 2 should discontinue approximately 20 minutes after the main fan switch is switched off If the switch is open and voltage continues at terminal 2 replace Time Delay When voltage at terminal 2 of Time Delay ceases the main fan relay must open No control box cooling Incoming Power Check main circuit breakers reset if required call powe company if needed Main Fan Switch Check continuity between switch terminals 20 Minute Time Delay With fan switch on check for
62. n Install in reverse order NOTE Be sure that the spring holder is holding the sensor bulb firmly If the sensor is not held firmly compress the wire form slightly to increase pressure oh Sk To test the thermistor probe refer to the following chart and instructions TEMPERATURE 325 350 400 500 omms 182 138 102 62 1 Place test pyrometer thermocouple preheat oven as specified under temperature calibration on page 43 2 Disconnect the thermistor probe from terminals 9 and 10 and measure the resistance across the 2 yellow leads 3 Refer to the above chart to determine if probe is producing the proper resistance EXAMPLE The probe resistance at 500 260 should be 24 ohms SWITCH DISPLAY SET Shut off power at main breaker Remove conveyor Remove front control compartment cover Disconnect wires from time temp display terminals 5 and 6 Pull off black operating Knob and remove hex mounting nut Reassemble in reverse order Q Ps 44 Impinger Il 1100 Series Service Manual Domestic PROCEDURE FOR USE OF TIME TEMP SIMULATOR NOTE For displays with Thermocouple simulator will not work This is a test device used to check the Time Temp Display Procedure for use Check incoming power to display at following terminals a Terminal 1 to 3 should have approximately 12 5 to 15 VAC b Terminal 2 to 1 should be 1 2 of the reading from 1 to 3 c Terminal 2 to
63. nd below S N 2011383 and Below CatchSpring O 369227 Catch Spring 369541 Thermocouple Thermistor Bracket Impinger Il 1100 Series Service Manual Domestic BLOW UP OVEN BACK ASSEMBLY 1100 SERIES Impinger Il 1100 Series Service Manual Domestic 65 66 PARTS GEARMOTOR ASSEMBLY 1100 SERIES LETTER DESCRIPTION 369151 Coupling And Encoder Disc 050 Allen Wrench Included Tach Generator Replace with 370216 Dust Cover O 3047 Serew10 32x38 P 369295 0LockWasher 24 0 986960 Stepper Motor Gearbox Assembly Includes R S T L R 369737 K HallEffeetSensor Impinger Il 1100 Series Service Manual Domestic BLOW UP GEARMOTOR ASSEMBLY 1100 SERIES SLIHM 55 YUAddaLS 43009N3 ONY SNITdNOS Fun 0107 A18N3SSV HOLONHVYSID O q hs bis SS 67 Impinger Il 1100 Series Service Manual Domestic PARTS CONVEYOR amp DOOR 1100 SERIES DESCRIPTION A 369190 Conveyor Drive Coupling Model 1100 1106 All Model 1116 1117 S N 2011382 and Below Model 1130 1151 S N 2011382 and Below Model 1152 1158 S N 2011820 and Below Model 1160 1163 S N 2011977 and Below 369611 Conveyor Drive Coupling Model 1116 1117 S N 2011383 and Above Model 1130 1151 S N 2011383 and Above Model 1152 1158 S N 2011821 and Above Model 1160 1163 S N 2011978 and Above B 369512 Coupling Center Model 1100
64. ntactor Intermittent Heating hermal Overload of motor Conveyor will not run REFER TO PAGE 26 Conveyor speed varying REFER TO PAGE 26 or intermittent Time Temp Display REFER TO PAGE 27 inoperative Temp Display out or REFER TO PAGE 27 inaccurate Impinger Il 1100 Series Service Manual Domestic Check the Amp draw on each leg for proper load Check the specification plate for rating information If the Amp draw is low or high check the individual elements for opens shorts and proper resistance WITH POWER OFF check resistance of the elements remove all leads from the elements and use an accurate digital VOM The element resistance should be as follows 208V 27 ohms approximately 240V 36 ohms approximately he mercury contactor has probably malfunctioned in he closed position If there is no voltage to the operating coil but there is high voltage at the contactor output replace the mercury contactor he main fan motor is equipped with internal thermal protection and will cease to operate if overheating occurs As the motor overheats and then cools this will ause the ovens to cycle on and off intermittently This may be caused by improper ventilation or preventative maintenance Also most of the problems listed under Oven will not heat can cause intermittent failure 23 TROUBLESHOOTING GUIDE 1130 THRU 1133 1160 THRU 1163 ELECTRIC OVENS MODEL 1130 1160 120 208 VAC SINGLE PHASE 60 HZ M
65. nting screws Reassemble in reverse order POE PRIDE HALL EFFECT SENSOR REPLACEMENT Remove two 2 mounting screws and remove sensor from conveyor motor Reinstall in reverse order TYPE OF GAS INCHES of CENTIMETERS of Mbar WATER WATER COLUMN COLUMN NATURAL GAS 3 5 WC 8 9 cm WC 8 70Mbar L P GAS 10 WC 25 4 cm WC 2 48kPa 24 8Mbar CITY TOWN GAS 1 4 WC 3 56 cm WC 3 5Mbar AIR PRESSURE SWITCH BURNER OR OVEN CAVITY TO REPLACE AIR SWITCH Shut off power at main breaker Remove conveyor Remove rear control compartment cover Remove cover of air switch exposing adjustment screw Disconnect and mark wires for proper reassembly Remove air tube and remove switch from hanger Reinstall in reverse order making sure wires are properly attached and air tube is properly attached unblocked and aligned properly to avoid crimping L Oe TO CALIBRATE AIR SWITCH 1 If switch will not activate when blower pressure is supplied turn adjustment screw counter clockwise 2 If switch will not deactivate when blower pressure is eliminated turn adjustment clockwise 48 Impinger Il 1100 Series Service Manual Domestic SPARK GENERATOR DUST eS Turn off power Remove conveyor Remove control compartment covers Disconnect 2 power leads to ignition control Located in bottom front of rear control compartment Disconnect high voltage cable Remove 2 screws and lift out generator Replace in reverse
66. on to motor shaft The encoder disc must be nearest motor Refasten tach bracket in proper alignment Tighten the set screw on the tach side first maintaining the 010 minimum dimension between the coupling hub and tach 10 Pull the coupling apart approximately 1 8 3 2mm and fasten the motor side set screw Impinger II 1100 Series Service Manual Domestic 39 11 Install the optical encoder refer to OPTICAL ENCODER in this section for adjustment NOTE The thin slotted encoder disc must be handled with care so not to bend it 12 Recheck tightness on the set screws to be sure they are tight If available LOC TITE the removable kind should be used to secure set screws OPTICAL ENCODER ASSEMBLY Remove gearmotor assembly see GEARMOTOR Above If replacing with new assembly cut wires to remove as new wires and plug are provided If only removing for access to coupling see step 3 Remove pins from connector with pin extractor tool P N 369600 Loosen dust cover screws and pull dust cover away from motor Remove 2 screws from optical encoder and remove encoder Reassemble in reverse order To adjust optical encoder a Position the encoder assembly so it does not rub the coupler hub and is square with the encoder disc The infrared light beam will be broken by slots in the encoder disc The encoder disc should not touch the bottom or top of the optical encoder if it does readjust the coupling The digital speed read
67. onnecting links from conveyor belting See Installation and Operating Instructions manual Move drive shaft or idle shaft toward end of conveyor and shaft with bearings will now slip out of holding bracket Replace bearing and reassemble TRANSFORMER TIME TEMP DISPLAY Shut off power at the main breaker Remove conveyor Remove front control compartment cover Remove transformer wires and mark for replacement Remove the 2 mounting screws and replace transformer Reassemble in reverse order TIME TEMP DISPLAY IRON Shut off power at main breaker Remove conveyor Remove front control box cover Mark all leads for proper reinstallation and then remove wires from all terminals at rear of the display Remove 2 screws from top of Time Temp case holding the case to the front panel NOTE On some of the more recent Model 1100 units the time temp display may now be removed If it is not free continue Remove 3 screws from the front panel lift up the front panel and remove 2 screws from the bottom of the display case Display should now be free to remove Replace in reverse order NOTE BEFORE TURNING ON POWER SET THE DIP SWITCHES TO THE PROPER SETTING DIP SWITCH SETTING CHART 42 To identify the module measure the width of the case Type lis 5 1 8 inches wide x 4 1 2 inches deep Type Il is 5 5 8 inches wide x 4 1 2 inches deep Type amp II have 6 position dip switch module Type has
68. oolingFan 1 D 95225 x 969907 Front Panel Label Ovens w o Set Button H 1 1 97046 Button Only 2 9369391 Potentiometer Conveyor gt 369520 X Potentiometer Temperature 00000000 9917 Display Time Temp 2 Q 369728 _____ Temperature Control Resistor 369193 Thermistor Probe Yellow Leads y 9369131 Thermocouple Probe 1 Red amp 1 White lead X 969051 2 357067 Thermostat Oven Cavity High Limit DD 369685 Drain Assembly 0 1 0 0 Used On S N 2000200 Thru 2011383 Used On S N 2011383 And Above lt Impinger Il 1100 Series Service Manual Domestic BLOW UP CONTROL COMPARTMENT FRONT 1116 1117 56 PARTS CONTROL COMPARTMENT REAR 1100 1106 1130 1136 1150 1151 S N 2011373 amp BELOW 1160 1163 S N 2011978 amp BELOW P N DESCRIPTION A 369628 B 369190 C 369512 D 369269 E Gear Motor Assembly Refer to Page 67 for Exploded View F 369137 G 369192 H 369200 Reay 22 369185 369187 For Phase Models 4 Required J 369186 369188 K 369120 For 1 Phase Models 2 Pole 369178 For 3 Phase Models 3 Pole L 354258 Transformer Control 354257 Transformer Control Model 1151 Only M 369506 Thermostat High Limit For Models 1
69. or accuracy and if necessary refer to troubleshooting section If temperature is still inaccurate after above calibration and troubleshooting use the following to check the High Temp Pot normally the High Temp Pot does not require adjustment Occasionally the pot is accidentally moved or needs adjustment Refer to the following drawing showing proper adjustment of the High Temp Pot Impinger Il 1100 Series Service Manual Domestic 43 FOR DISPLAYS WITH THERMISTOR PROBE ONLY BOTTOM OF TIME TEMP DISPLAY 000 006 000000000 test leads here reading should be 26 5 ohms if not adjust pot range 0 34 ohms TIME CALIBRATION Be sure dip switch settings are proper Turn power on Turn conveyor on Place an object on the conveyor belt and time with a stopwatch the elapsed time for the object to travel through the oven leading edge in to leading edge out Push in and hold the set button Discontinued on newer models Adjust time pot rear of display so display agrees with your stop watch time Seal pot with Glyptol or nail polish ud DS OI THERMISTOR PROBE REPLACEMENT Shut off power at the main breaker Remove conveyor and fingers from oven Remove control compartment covers Disconnect the 2 yellow thermistor leads from terminals 9 and 10 on the rear of the time temp display Remove the sensing bulb of the thermistor probe from its wire form holder located at right inside rear of the ove
70. or drive side slightly and place sleeve on conveyor side metal drive end Adjust motor side coupling drive end so sleeve is now held in place between the drive ends and tighten set screw on motor side firmly To remove conveyor simply grasp the coupling sleeve and pull towards conveyor The sleeve and drive end will slide towards the conveyor and separate from the motor drive GEARMOTOR D C CONVEYOR PUO Ora cauce Shut off power at main breaker Remove conveyor Remove control compartment covers Remove metal drive end from the motor shaft Remove electrical leads from gearmotor assembly and mark for proper reassembly Remove 4 screws holding gearmotor to the side wall of control compartment To remove tach optical encoder assembly and coupling and encoder disc refer to the following instructions Reassemble in reverse order using care to readjust motor properly to be in line with conveyor coupling NOTE If a new gearmotor is installed the D C motor control board must be recalibrated COUPLING AND ENCODER DISC Remove gearmotor assembly See GEARMOTOR Remove dust cover above motor Loosen both allen set screws 050 inch allen wrench located on coupling hub Remove 3 screws from tach bracket loosen the 4th Remove encoder assembly see OPTICAL ENCODER ASSEMBLY in following procedure Push coupling down on motor shaft Swivel tach bracket aside and remove coupling To install push coupling
71. order IGNITER SENSOR PROBE 2 See page 38 to remove hot surface ignitor Unfasten screws and remove probe Disconnect wires and replace probe in reverse order IGNITION CONTROL T 2 3 4 5 Shut off power at main breaker Remove control compartment covers For Honeywell Ignition Control loosen 2 screws and remove control from base For Landis amp Gyr Ignition Control depress 2 clips and remove control from base If replacing the control and base remove the control first and then 2 screws holding the base Mark wires prior to removal Reassemble in reverse order Be sure base is correctly mounted or reset will not align with cover hole MOTOR BURNER BLOWER QS Meo Toe Shut off power at main breaker Remove conveyor Remove control compartment covers Remove conveyor gear motor Loosen 4 burner nuts holding burner flange to oven wall Unplug burner blower motor This plug has built in locking clips on 2 sides of the plug Push in to release Loosen 3 screws holding the blower air horn to burner Remove top control compartment brace Spring back side of control box out slightly push burner to side and you should now be able to pull the right side of the motor to the front which should free the air horn from the burner In some extreme cases the cooling fan may have to be removed 10 Assemble in reverse order BURNER ALARM REPLACEMENT 1 2 3 4 Remove control compartment cov
72. out may be observed to check proper adjustment of the optical D OLIM TACH GENERATOR Turn off power at main breaker Remove gearmotor assembly see GEARMOTOR Remove tach cover plate and tach leads Mark wires for reassembly Remove 2 slotted screws from dust cover base and remove dust cover Loosen coupling set screw 050 inch allen wrench Remove tach bracket from motor 4 screws Remove 4 screws from base of tach and tach is now free for removal Reassemble in reverse order Maintain spacing of 010 minimum between tach bracket and coupler hub NOTE If anew tach generator is installed the D C motor control board MUST BERECALIBRATED There is no repair procedure for the tach If defective replace mt sos Fox D C MOTOR CONTROL BOARD L 1 A Q T L1 A 4 A FUSE RESISTOR RESISTOR MIN MAX 3 1 12 MIN IR CL TACH Ti 2 MAX MIN T 1 T2 BOARD P N 369155 BOARD P N 369155 BOARD P N 369155 STYLE 1 STYLE 2 STYLE 3 Three different styles of control boards have been used and all three are still usable All three were supplied under the same part number TO REPLACE THE CONTROL BOARD Turn off power at main breaker and remove front control compartment cover Remove conveyor Remove and mark all wires from board Remove control board bracket and board from unit 3 screws Remove control board from mounting bracket Remove 4 screws lockwashers and nuts Ot
73. rmostat pre heated check for continuity If switch is open replace Cooling Fan Motor s 120 VAC should be present at the fan motor If voltage is present check for opens or shorts WITH POWER OFF check for locked rotor of the fan motor Thermostat Cooling Fan This normally open thermostat should close at 120 F 48 9 C and reopen at 100 F 37 8 Check for main fan operation If it is not operating Control box cooling fan continues to run Oven will not heat Main Fan Motor refer to Oven fan will not run With switch on check for 120 VAC on both terminals Heat Switch to neutral Replace if defective Air Pressure Switch This normally open switch should close when the main fan is activated Adjust if necessary Refer to page 23 Replace if defective Fuse 3 Amp Check replace if necessary Fuseholder Check replace if necessary Temperature Control Check for 120 VAC supply at terminal 11 to neutral on temperature control If no voltage is present trace wiring back to 3 amp fuse Turn the temperature adjustment knob to maximum temperature position and check for 120 VAC at the load terminal 9 and neutral If 120 VAC is present and unit is not heating refer to Mercury Contactor for next check If 120 VAC is not present proceed Thermocouple Probe WITH POWER ON AND THERMOCOUPLE LEADS ATTACHED TO THE TEMPERATURE CONTROL BOARD measure D C millivolt output of these leads Re
74. switch off wait 45 seconds and switch the burner system on to retry ignition 24 volts should be present at 24 volt terminals If not present trace wiring back to burner transformer When 24 VAC is supplied the control switches 120 VAC from L1 and L2 to the Hot Surface Ignitor If 120 VAC is not present at L1 and L2 trace wiring back to oven cavity High Limit Thermostat If 24 VAC and 120 VAC are present and 120 VAC is not across the Hot Surface Igniter terminals replace the ignition control 19 Hot Surface Igniter Ignition Control If 120 VAC is present at Hot Surface Igniter terminals visually check to see that the igniter is heating Igniter may be viewed through the port glass in end of the burner tube The Igniter should glow bright red If the igniter does not heat replace the Igniter After 45 seconds of hot surface igniter pre heat the ignition control will switch 24 VAC to the gas control valves Check for 24 VAC output from ignition control across terminals marked valve and valve ground If no voltage is present replace ignition control Gas Control Valves Flame will not stay lit Hot Surface Igniter Flame Sensor When 24 VAC is supplied to the gas control valve the valves should open Check for gas pressure at the manifold tap located just before the burner If there is no pressure check the incoming gas supply to be sure all manual valves are open and flex
75. t opens at 662 F 350 C and may be manually reset after the sensing bulb temperature drops 18 F 10 C Power 120 VAC is also supplied to the Burner Blower Motor As this motor reaches approximately 1600 RPM its Internal Centrifugal Switch closes supplying 120 VAC through the normally closed Control Box High Limit Thermostat to the primary of the 24 VAC Transformer and the Temperature Control The Control Box High Limit Thermostat is manually re settable and opens when the control box reaches 170 576 C 390 Discontinued at S N 2011383 The Ignition Control operates on both 24 VAC and 120 VAC When the control is energized by 24 VAC from the Transformer 120 VAC is switched by the Ignition Control to the Hot Surface Ignitor for 45 seconds for Hot Surface Ignitor warm up The Ignitor glows red 24 VAC is switched to the gas valve which opens and ignition should now occur If ignition does not occur in 6 seconds the control will lock out To recycle after lockout turn off the burner switch for 45 seconds and then turn the switch back on When the Centrifigual Switch of the Burner Blower Motor closes power is applied to the Temperature Control The 2 5K ohm Temperature Pot is adjusted to desired temperature The Thermocouple will provide varying millivolts to the Temperature Controller The Temperature Controller supplies 120 VAC to the Solenoid Valve at intermittent intervals to maintain desired temperature Closing the Fan Switch and
76. t stay lit replace ignition control NOTE check for proper ground connection on ignition control Check for 120 VAC at terminal 11 to neutral on temperature control no voltage trace voltage back to Centrifugal Switch Turn the temperature adjustment knob to maximum temperature position and check for 120 VAC at the load terminal 9 and neutral If 120 VAC is present and unit is not heating refer to Temperature Solenoid Valve for next check If 120 VAC is not present proceed Impinger Il 1100 Series Service Manual Domestic Thermocouple Probe Temperature Control Potentiometer Temperature Solenoid Intermittent Heating Thermal Overload of Main Fan and Burner Blower Motors Conveyor will not run REFER TO PAGE 26 From S N 2011383 and up REFER TO PAGE 29 WITH POWER ON AND THERMOCOUPLE LEADS ATTACHED TO THE TEMPERATURE CONTROL BOARD Measure the D C millivolt output of these leads Refer to thermocouple chart on page 36 for proper readings If these readings are not achieved replace the thermocouple WITH POWER OFF remove the potentiometer leads from the temperature control board and measure ohms from black to white leads The reading should be from approximately 0 to 2 5 K ohms as the dial of the potentiometer is turned throughout its full rotation From black to red leads the reading should be approximately 2 5 K ohms constant throughout the full rotation of the dial If these readings are not ac
77. t switch on c Turn adjusting screw clockwise until heat shuts off d Turn adjusting screw counterclockwise 1 4 turn and unit should heat NOTE Test as follows e Oven must be tested in heated condition f Remove main fan fuse Main fan should shut down deactivating air switch causing heat to shut off in approximately 5 to 25 seconds g Fine tune adjustment as needed Impinger Il 1100 Series Service Manual Domestic 33 TEMPERATURE CONTROL BOARD Pre O NOTE If your unit contains a Fenwal temperature control board see below replace it with a thermologic control board TEMPERATURE CONTROL BOARD CONVERSION FENWAL TO THERMOLOGIC FOUND ONLY IN ELECTRIC UNITS BELOW S N 2000861 Remove Fenwal board Remove 5K ohm potentiometer Remove wire 63 from oven This wire is connected to Fenwall board at terminal 5 Install new thermologic board with 2 screws Install new 2 5K ohm potentiometer Attach leads to thermologic board as shown in drawings See pages 34 amp 35 Located in control compartment below drive end of the conveyor 34 1 po 09 24 59 11 12 Shut off power at main breaker and remove conveyor Remove front control compartment cover Remove the two mounting screws Remove the electrical leads and replace the control board Identify the style of thermologic board by looking at the top of the transformer on the board There are five styles of boards each identifie
78. ted on gear motor producing electrical pulses that are Impinger Il 1100 Series Service Manual Domestic transmitted to the display The display converts these pulses into a read out of minutes and seconds The temperature portion of the Time Temp Display uses a thermistor probe to sense oven temperature The thermistor outputs a resistance proportional to the oven temperature This resistance is then converted by the display into a temperature reading AUTOMATIC COOL DOWN When this oven is started the time delay relay timing circuit is enabled permitting the oven fans to run for approximately 20 minutes after the oven is shut off to cool the oven The Time Delay Relay will keep the coil of Relay closed maintaining operation of main fan and Cooling Fan Motors Impinger Il 1100 Series Service Manual Domestic SCHEMATIC 1100 1101 LOLL pue 0011 ST3IGON OSA ALS DUE 104 g 100345 GJESS DE LUE unu peog quw 22 dey Ana spond 54 GULE 104484 qua 21 58 jeung OE DUE 990007 QUINA qu 93 ts SdY Sd zs TTA FEL uamucasNvul c HX MAL LI SAHO H313WCUN3LOd di H4 IL HILMCHIVL 1 115 AWTSK HOLMS FS 1545 HOLMS fS 1555 HOLIMS 25 1505 NIYA
79. the Conveyor Switch supplies 120 VAC through 3 Amp Fuse to L1and 12 of the Motor Control Board AC volts are converted to DC by the Control Board and are supplied to the Motor from Board terminals A and A Adjustment of the Speed Control Pot 5 000 ohm 10 turn pot will change resistance at terminals P1 P2 and P3 varying S N 2011383 and above the DC voltage to the motor The speed of the Conveyor Motor Refer to page 26 will increase or decrease as the DC voltage from the board increases or decreases respectively As the motor turns it drives both the Reducer Gear Box and the Tach Generator The Tach Generator is a DC voltage Generator that supplies a voltage to the DC Motor Control Board and is used as a reference for maintaining a constant conveyor speed The secondary output of the Transformer is supplied to terminals 1 2 and 3 of the Time Temp Display The secondary output of Transformer is nominally 12 5 to 15 VAC with a center tap The voltage from center tap to each leg is 1 2 the secondary voltage Impinger Il 1100 Series Service Manual Domestic S N 2011383 and above The speed side of the Time Temp Display uses a slotted disc Refer to page 27 cemented to tach coupling to break the infra red light beam of the optical encoder mounted on gear motor producing electrical pulses that are transmitted to the display The display converts these pulses into a read out of minutes and seconds The temperature portion of the Tim
80. urner Remove air shutter from old unit and install on new unit If air shutter of old unit is damaged or lost replace with new air shutter 369401 Reassemble in reverse order Adjust air shutter opening if necessary Set air shutter at 50 open and adjust to get a blue flame with an occasional tip of yellow under high flame A glass view port in the burner assembly should be used to observe flame CLEANING OF THE BLOWER FAN IS NECESSARY ON A PREVENTIVE MAINTENANCE SCHEDULE See Blower Wheel Burner below BLOWER WHEEL BURNER This is part of the burner blower motor assembly TO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING 1 2 3 4 Disconnect power and remove control compartment covers Remove air shutter held by 3 screws Loosen set screw on blower wheel hub and pull straight out Reassemble in reverse order NOTE There is no critical placement of the blower wheel on the motor shaft Just back as far as it will go and then spin the blower to be sure it is not rubbing AIR PRESSURE SWITCH S D Ol oa pores Shut off power at main breaker Remove conveyor Remove front control compartment cover Remove air switch cover plate Disconnect wiring and mark for reassembly Loosen 2 screws and remove air switch Disconnect 1 4 air tube Reassemble in reverse order Turn on power and calibrate air switch as follows a Turn adjusting screw counter clockwise to full out position b Turn main fan and hea
81. used when handling the hot surface igniter as they are quite fragile and may be easily broken if dropped or bumped ORIFICE MAIN BURNER ras oo Tues Shut off power at main breaker Shut off gas at main line to the oven Remove conveyor Remove control compartment covers Loosen 4 nuts holding manifold to burner cap Loosen pipe union Remove valve and manifold Remove main orifice Reassemble in reverse order ORIFICE BYPASS 1 2 Loosen flare nut and remove bypass orifice Reassemble in reverse order THERMOSTAT HIGH LIMIT OVEN CAVITY Oh ee I N Shut off power at main breaker Remove conveyor Remove control compartment covers Remove screws from bracket Remove the mounting nut from the threaded shaft Remove the capillary tube bulb from the wire holder in the oven heating chamber NOTE Access to the capillary tube bulb is through the front door after removing the conveyor and fingers Insert the new capillary tube bulb through the tube into the oven cavity and into the wire form holder NOTE The wire form must hold the bulb firmly If it does not compress the wire form slightly to increase the pressure Reassemble in reverse order Push the reset button Test system for proper operation THERMOSTAT HIGH LIMIT 38 aus No Shut off power at main breaker Remove conveyor Remove control compartment covers Remove 2 screws from holding bracket located in upper rear of t
82. usted to achieve the desired temperature The Thermocouple will provide varying millivolts to the Temperature Control The temperature control board then supplies 120 VAC to the coil of the Contactor at intermittent intervals to maintain the desired temperature Closing the Conveyor Switch supplies 120 VAC to the DC Motor Control Board at terminals L1 and L2 AC volts are converted to DC volts and are supplied to the Conveyor Motor at terminals A and A Adjustment of the Speed Control Potentiometer 5 000 ohm 10 turn will change resistance at terminals P1 P2 and P3 varying the DC voltage to the Conveyor Motor The through speed of the conveyor motor will increase or decrease as the DC voltage from the board increases or decreases respectively As the motor turns it drives both the reducer gear box and the tach generator The tach Generator is a DC voltage generator which supplies a voltage to the DC Motor Control Board and is used as a reference for maintaining a constant conveyor speed The secondary output of the Transformer is supplied to terminals 1 2 and 3 of the Time Temp Display The secondary output of Transformer is nominally 12 5 to 15 VAC with a center tap The voltage from center tap to each leg is 1 2 the secondary voltage The speed side of the Time Temp Display uses a slotted disc S N 2011383 and above on cemented to tach coupling to break the infra red light beam Models 1130 through 1133 of the optical encoder moun
83. ustment Also check for worn bearings The Installation and Operations Manual shows proper conveyor belt position A conveyor belt that is too tight will contribute to excessive load bearing wear and wearing of slider bed rods Conveyor speed Power Supply Check power supply at the DC control board for the varying or intermittent 120 VAC at board terminals L1 and L2 If voltage is not present and steady check the main circuit Impinger Il 1100 Series Service Manual Domestic o breakers and call power company if necessary S N 21011383 and above Models 1130 through 1133 2011978 and above Models 1160 through 1163 Refer to page 29 Tach generator and DC Motor Control Board DC Gearmotor Time Temp Display inoperative S N 2011383 and above Models 1130 through 1133 Refer to Page 29 12 6 VAC Power Supply Temp Display out or inaccurate NOTE Time Temp displays use two types of temperature sensors thermistor probe 2 yellow wires thermocouple probe 1 red wire and 1 white wire From S N 2011383 and up Models 1130 through 1133 S N 2011978 and up Models1160 through1163 Refer to Page 29 Thermistor Probe Impinger Il 1100 Series Service Manual Domestic WITH POWER OFF Remove the leads from terminals T1 and T2 Place the test leads of a digital test meter on the tach leads turn power on and the meter reading should be approximately 20 to 25 VDC This reading is normally steady within 0 2 to 0
84. voltage is not available refer to the schematic and trace circuit for incoming power failure The older units have a 4 amp ambient fuse in each red secondary lead These may be jumpered to determine if they are burnt out or intermittent Insert the thermocouple of your pyrometer into a finger hole in the top center of the oven Be sure the tip of the thermocouple is not touching metal The pyrometer will indicate oven temperature Disconnect the yellow tipped thermistor leads from the time temp terminals 9 and 10 Measure the resistance of the thermistor probe and temperature of oven See the chart on page 44 for proper resistance readings Inspect the thermistor bulb for its proper location in its spring holder Check for short in leads where they enter the sensor bulb Also check each thermistor lead for short to ground 27 Thermocouple Probe Place your pyrometer thermocouple into the center of top finger Connect temperature meter to thermocouple at terminals 9 amp 10 on back of the time temp display Be sure to maintain proper polarity on thermocouple connections Compare actual oven temperature with the reading at the time temp display If the temperature readings match re calibrate or replace time temp display If the readings do not match replace thermocouple probe Erratic time temp dispaly Temp Display inaccurate erratic or inoperative Time Display inaccurate erratic If strange or unusual behavior

Service Manual 01/05/2007

Contents

Download Pdf Manuals

Related Search

Related Contents