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Lincoln Impinger Conveyor Ovens 1100 Series User's Manual

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3. YELLOW 32 YELLOW BURNER GROUND 33 IGNITION CONTROL TRANSFORMER STEP DOWN 24 VAC 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 Ox gro oo Ne BURNER VENTURI See Hot Surface Igniter HOT SURFACE IGNITER 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 9 Pull out on burner cap removing cap and burner venturi 10 The hot surface igniter is held in place on the burner venturi by a screw loosen Screw and remove igniter 11 Replace in reverse order NOTE Care must be used when handling the hot surface igniter as they are quite fragile and may be easily broken if dropped or bumped 54 Impinger II 1100 Series Service Manual International Qo Ss gr qoc ore ORIFICE MAIN BURNER S SI OOP ONS 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 Reasse
4. HOION IA LOYLNOS 10 e pn a NILO HO WLLINOLNALOJ dd ITO ERHINOLNAUI di LUNDA 074 gt 1 VOLO 29 wilt Cece BSOUM HI NVE 85 m VOR ease FUD x 408105 WOLIANOJ ADIE MOLIDVEYS 1 un usa maven DUE D90002 nu pes wai MALDNOHOVL PU bi LIC HOM ALIKVONEAG LLE i LES HOLMS Ave P NAOT TOGO NIAC LWISOMUBHL Aidt HOLME WENNCISSHYMI dMYL REDM FRED HOMME Rav H H Ed IHM 2 Y anqa HO oy 100 0105 100937115 gta 22 013 94 3 ts 4 us dv Impinger II 1100 Series Service Manual International 12 SCHEMATIC 1106 90LL 13qON PATOL pus UA USAUS9 KH eng 0969 Und sewuspiye od mou E ING GZLEGC 8 AI more PUS SUGE puse que SHUN TT 1 LHM H3WHO3JSNVHL ania HO 100 N3349 10944199 100 H3A1S td f ya do Wi d i b 3u 4 54 IWA 1715 MH3NHO4S
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6. replace time delay When voltage at terminal 2 of time delay ceases main fan relay must open Check main circuit breakers reset if required call power company if needed Check continuity between switch terminals Terminals are normally closed and open at 170 F 5 F 76 6 C 2 8 C Check for over heating and reset thermostat Test for proper operation If it will not reset and hold replace Check replace if necessary Check replace if necessary 120 VAC should be present on secondary Replace as needed 120 VAC should now be at these fan motors If voltage is present check motors for shorts or opens WITH POWER OFF Check for locked rotor Check circuit breakers reset if required call power company if needed Cooling Fan Thermostat Thermostat is normally open and closes at 120 F 3 48 9 C 1 7 and opens at 100 F 3 F 37 8 1 7 C Terminals are normally closed but open at 170 C 5 F 76 6 2 8 C Check for over heating and reset thermostat Test for proper operation If it will not reset and hold then replace Check replace if necessary Check replace if necessary 120 VAC 10 should be present at secondary of transformer If proper voltage is not present check transformer primary for proper input Replace as needed Impinger II 1100 Series Service Manual International Cooling Fans Cooling fans continue Cooling Fan Thermostat 20 minute Oven will not
7. Remove 2 screws and remove thermostat Reassemble in reverse order Impinger II 1100 Series Service Manual International 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 DOUG s ON 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 burner 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 andadjust 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 PD This is part of the burner blower motor assembly TO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING 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
8. 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 for 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 accidently moved or needs adjustment Refer to the following drawing showing proper adjustment of the High Temp Pot Impinger II 1100 Series Service Manual International 61 FOR DISPLAYS WITH THERMISTOR PROBE ONLY OF TIME DISPLAY O E E E test leads here reading should be 26 5 ohms if not adjust pot range 0 34 ohms TIME CALIBRATION 1 Besure dip switch settings are proper 2 power on 3 Turn conveyor on 4 Placean 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 Noa THERMISTOR PROBE REPLACEMENT Shut off power at the main breaker Remove conveyor and fingers from oven Remove control compartme
9. DOV ODDE Impinger 11 1100 Series Service Manual International 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 Reinstall in reverse order TRANSFORMER STEP DOWN 120 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 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 o ULE 9 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 DOP GON 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 Bom oo WARNING THIS CONTROL MUST NOT BE
10. Thermocouple Probe 32 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 atleast once before replace ment See procedure for board adjustment in Section D Ifthe problem seems to be the motor or gearbox Check the brushes in the motor for excessive arcing and or unusual wear Check the motor and gearbox from instructions located under possible cause listing Conveyor gear motor Measure the transformer primary for a nominal 120 VAC input If 120 VAC primary voltage is not available refer to the schematic and trace the circuit for incomi ng power failure 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 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 The thermocouple tip should measure air temperature and must not be touching metal Disconnect the yellow tipped thermistor leads from the ti
11. 1100 Series Service Manual International Temperature Control Potentiometer Mercury Contactor Heater Elements Oven heats with switch off Mercury Contactor Intermittent Heating Thermal Overload Impinger II 1100 Series Service Manual International LEADS ATTACHED TO THE TEMPERATURE CONTROL BOARD measure D C millivolt output of these leads Refer to thermocouple chart in SectionD for proper readings If these readings are not achieved replace 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 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 potentiometer If the thermocouple probe and the control potentiometer check good then the problem is usually with the temperature control board Check for 120 VAC to the contactor coil If voltage is present and contactor will not activate replace the contactor Also check each contactor for proper high voltage input and output 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
12. 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 Assembly H 369226 Pan Stop J 369516 Conveyor Bearing 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 9 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 Impinger II 1100 Series Service Manual International CONVEYOR DOOR 1100 SERIES BLOW UP Impinger II 1100 Series Service Manual International 89 90 This page intentionally left blank Impinger II 1100 Series Service Manual International This page intentionally left blank Impinger II 1100 Series Service Manual International 91 s Lincoln
13. C CONVEYOR 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 side wall of control compartment To remove tach optical encoder assembly and coupling and encoder disc refer to the following instructions 8 Reassemble in reverse order using 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 SUOY GI dO MN COUPLING AND ENCODER DISC 1 Remove gearmotor assembly See GEARMOTORF 2 Remove dust cover above motor 3 Loosen both allen set screws 050 inch allen wrench located on coupling hub 4 Remove 3 screws from tach bracket loosen the 4th 5 Remove encoder assembly see OPTICAL ENCODER ASSEMBLY in following procedure 6 Push coupling down on motor shaft Swivel tach bracket aside and remove coupling 7 To install push coupling on to motor shaft The encoder disc must be nearest motor 8 Refasten tach bracket in proper alignment 56 Impinger II 1100 Series Service Manual International Tighten the set screw on the tach side first maintaining the 010 minimum dimension between the coupling hub and tach Pull the coupling apart approximately 1 8 3 2 and fasten the motor side set screw Install the optical e
14. Except Model 1160 1163 prior to S N 2011978 High Hat used with 369155 Relay Cooling Fan Not Used On 1100 1106 Thermistor Probe Yellow Leads Thermocouple Probe 1 Red amp 1 White Lead Air Pressure Switch Terminal Block Time Delay 20 Minute Not Used On Models 1100 1106 Thermostat Cooling Fan Not Used On Models 1100 1106 Stepper Control Models 1130 thru 1136 1150 1151 S N 2011383 and Up Models 1160thru 1163 S N 2011978 and Up Drain Assembly Transformer Stepper Controller Impinger II 1100 Series Service Manual International CONTROL COMPARTMENT FRONT BLOW UP MODEL 1100 1106 1130 1136 1150 1151 1160 1163 Impinger II 1100 Series Service Manual International CONTROL COMPARTMENT FRONT LETTER P N A 369569 369507 369536 369124 369173 350224 369522 369907 370142 369248 369247 370046 369260 369680 369167 369152 369391 369572 369520 369172 369508 354258 369523 369728 369155 369189 369523 369640 369605 369685 369193 369131 O Z r N lt xs lt c10500 Used on S N 2000200 to S N 2011821 Used on S N 2011821 and Above 74 MODELS 1152 THRU 1158 DESCRIPTION Cooling Fan Thermostat Cooling Fan Cord Set Cooling Fan Cooling Fan Transformer 12 6 Lens Yellow Knob and Dial Thermostat Front Panel Label All Models Except 1152 1153 Front Panel Label Model 1152 1153 Knob Speed Control Shaft Lock Button Only Switch On Off Front Cove
15. Incoming Power Supply Fuses 10 Amp Main Fan Fuseholder Fuses 1 Amp Transformer Fuseholder Transformer Control Thermostat High Limit Oven Cavity replace thermostat Switch Main Fan Relay Oven Start 20 Minute Time Delay Main Fan Relay Main Fan Motor Capacitor 20 Minute Time Delay Impinger II 1100 Series Service Manual International EVALUATION Check circuit breakers Reset if required Call Power Co if needed Check replace if necessary Check replace if necessary Check replace if necessary Check replace if necessary 120 VAC 10 should be present at secondary of transformer If proper voltage is not present check transformer primary for proper input Replace as needed Terminals are normally closed If open reset the thermostat and test for proper operation If it will not reset and hold Check for continuity between switch terminals Check for continuity at relay coil and visually check for pull in of contacts Check for 120 VAC at terminals 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 Time Delay 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
16. TIME TEMP DISPLAY STEPPER MOTOR DRIVE 10 adjusted to desiredtemperature The Thermocouple will provide varying millivolts to the Electronic Temperature Controller The electronic tempera ture controller supplies 120 VAC to the Solenoid Valve at intermittent intervals to maintain desired temperature Closing the Conveyor Switch supplies 120 VAC to the D C 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 Refer to terminals P1 P2 and varying the DC voltage to the Conveyor Motor The speed of the conveyor motor will increase or decreaseas 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 Display Transformer is supplied to terminals 1 2 and 3 of the Time Temp Display The secondary output of Trans former 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 cemented to tach coupling to break the infra red light beam of the optical
17. VOM The element resistance should be 35 as follows 220V 30 ohms approximately 240V 36 ohms approximately Oven heats with switch off 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 contactor output replace the mercury contactor Intermittent Heating Thermal Overload The main fan motor is equipped with of motor internal thermal protection and will cease to operate if overheating occurs As the motor overheats and then cools this will cause the oven to cycle on and off intermittently 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 REFER TO PAGE 31 Conveyor speed varying REFER TO PAGE 32 or intermittent Time Temp Display REFER TO PAGE 33 inoperative Temp Display out or REFER TO PAGE 33 inaccurate 36 Impinger II 1100 Series Service Manual International TROUBLE SHOOTING GUIDE ELECTRIC OVENS MODEL 1134 220 380 MODEL 1135 240 415 MODEL 1136 240 MODEL 1150 220 380 THREE PHASE 50 HZ THREE PHASE 50 HZ SINGLE PHASE 50 HZ THREE PHASE 50 HZ REFER TO PROPER SCHEMATIC FOR INDENTIFIED COMPONENTS SYMPTON POSSIBLE CAUSE Oven fan will not run Fuse 10 Amp Main Fan Fuseholder Fuse 1 Amp Transformer Fuseholder Transfo
18. at the fan motor If voltage is present check for opens or shorts WITH POWER OFF Check for locked rotor on fan motor Check cool down thermostat thermostat closes at 160 F and opens at 140 F Check for power 220 240 VAC at cool down thermo stat With cool down thermostat preheated check for continuity If switch is open replace Check for main fan operation If it is not operating refer to Oven fan will not run Terminals are normally closed open at 190 F If open reset the thermostat and test for proper operation If it will not reset and hold then replace Impinger II 1100 Series Service Manual International Switch Heat Air Pressure Switch Fuse 3 Amp Fuseholder Temperature Control Thermocouple Probe Temperature Control Potentiometer Mercury Contactor Heater Elements Impinger II 1100 Series Service Manual International With switch on check for 120 VAC on both terminals to neutral Replace if defective This normally open switch should close when the main fan is activated Adjust if necessary Refer to Section D Replace if defective Check replace if necessary Check replace if necessary 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 pres
19. board with 2 screws Install new 2 5K ohm potentiometer Attach leads to thermologic board as shown in drawings See Page D5 Located in control compartment below drive end of the conveyor 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 identified by a color marked on the transformer either RED BLUE GREEN GOLD ORA SILVER DOT Refer to Page D5 showing proper wiring connection NOTE When mounting a new temperature control board DO NOT overtighten 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 3
20. 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 A OO NS COUPLING CONVEYOR DRIVE FOR ALL 1100 MODELS 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 This is not a set screw and should never be overtightened PROCEDURE FOR ADJUSTING DRIVE COUPLING 1 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 conveyor 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 ORG 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
21. dip switches as follows DISPLAY 1 2 3 4 5 6 7 8 9 10 SWITCH POSITION OFF OFF ON ON For time temp displays using a thermocouple red wire on 9 and white wire on 10 Off for set the dip switches as follows On for DISPLAY 1 2 3 4 5 6 7 8 9 10 SWITCH POSITION OFF OFF ON OFF OFF ON ON OFF ON 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 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 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 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 TO REVERSE CONVEYOR DIRECTION ON STEPPER DRIVE SYSTEM Qi doo oic Shut off power at main breaker Remove conveyor Remove front control box cover Change position of dip swit
22. 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 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 When this oven is started the time delay relay timing circuit is enabled permitting the oven fan 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 Main Fan Relay closed maintaining operation of the Main Fan Motor and cooling fans Closing the Conveyor Switch supplies 120 VAC through a 3 Amp Fuse to the primary of the Conveyor Control Transformer The secondary of this Transformer supplies 10 VAC and 29 VAC to the Conveyor Control The Conveyor Control supplies voltage pulses to the Conveyor Motor The Conveyor Control Potentiometer varies the frequency of these pulses The motor speed will increase or decrease as the frequency of the pulses increase or decrease respectively Closing the Main Fan Switch supplies 120 VAC to the primary ofthe Time Temp Transformer The secondary output of the Trans former 12 5 to 15 VAC with a center tap is supplied to terminals 1 2 and 3 of the Time Temp Display The Display works on a balanced input and center t
23. heat Gas Supply Main Fan Fuse 3 Amp Fuseholder Relay Oven Start Burner Switch Gas Pressure Switch Air Pressure Switch Oven Cavity High Limit Ignition Control Impinger II 1100 Series Service Manual International 120 VAC should now be at these fan motors If voltage is present check motors for shorts or opens WITH POWER OFF Check for locked rotor Thermostat is normally open and may to run after have closed if control box temperature cool down is 120 F or above 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 on Page C6 Check replace if necessary Check replace if necessary Supply voltage should be present across these terminals Check for supply voltage on both sides of Switch If switch is closed and voltage present on one side only replace switch This switch is located inside the gas valve and should close when gas pressure is present WITH POWER OFF remove 3 prong plug on gas valve and measure continuity between terminals 2 and 3 NOTE Remove insulation pad below plug to read numbers If no continuity check the following Proper gas pressure supply to gas valve as marked on the oven specification plate Check for proper adjustment of gas pressure switch 8 8 on dial for natural gas 23 for LP and 4 5 for Town Gas Check gas filter in gas valve for block
24. motor shaft Just back as far as it will go and then spin the blower to be sure it is not rubbing Impinger 1100 Series Service Manual International 49 AIR PRESSURE SWITCH S S S DO mo P NE gt g 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 Turn adjusting screw counter clockwise to full out position Turn main fan and heat switch on Turn adjusting screw clockwise until heat shuts off Turn adjusting screw counterclockwise 1 4 turn and unit should heat NOTE Test as follows Oven must be tested in heated condition Remove main fan fuse Main fan should shut down deactivating air switch causing heat to shut off in approximately 5 to 25 seconds Fine tune adjustment as needed TEMPERATURE CONTROL BOARD Ox gr o ET Oxo d oo NU 50 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
25. then back to the power source if necessary If 120 VAC is present at L1 and L2 check the VDC output at terminals A and If a DC voltage is not present check the 4 amp and the 1 amp fuses on the Impinger II 1100 Series Service Manual International Conveyor Gear Motor Conveyor Conveyor speed varying Power Supply or intermittent S N2011821 amp above Refer to page 45 Tach generator and DC Motor Control Board Impinger II 1100 Series Service Manual International control 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 theconveyor As described below under conveyor Check the leads to the motor for evidence of any shorts or opens and each lead to ground Check motor brushes Replace as needed If themotor fails the above tests replace motor Remove the dust cover from the top of the motor and rotate motor shaft to deter mine if there is a locked rotor or a locked gear box use care so encoder disc is not damaged Check for any mechanical mis alignment or i improper adjustment Also check for worn bearings Thelnstallation and Operations Manual shows proper conveyor belt position A conveyor belt that is too tight wil
26. transformer The transformer steps the voltage down to 120 VAC for the control circuit 120 VAC is supplied to the coil of the main fan relay its normally open contacts now close energizing the main fan motor Closing the main fan switch also supplies 120 VAC to the cooling fan and through a normally closed hi limit thermo stat the time temp display 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 Potentiom eter 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 P3 varying the DC voltage to the Conveyor Motor The speed of t
27. 02 C If not at this temperature adjust pot to achieve these figures Refer to Page D5 Impinger II 1100 Series Service Manual International a Forthe GREEN GOLD OR SILVER dot control board place the test probe of your meter in position as indi cated in prior note Set the oven temperature control dial 500 F 260 C adjust pot P6 see 08 to achieve a temperature reading on test meter of 500 F 260 C CCW to increase CW to decrease 10 Adjust Time Temp Display Pot Temp Cal for 500 F 260 C RED POTENTIOMETER TRANSFORMER MARKED 2 5 K OHMS WITH GREEN GOLD OR SILVER DOT L 1120 VAC THERMOCOUPLE TYPE J POTENTIOMETER TRANSFORMER 2 5 K OHM MARKED IN BLUE L 1120 VAC THERMOCOUPLE TYPE J RED POTENTIOMETER TRANSFORMER MARKED IN RED L 1 120 VAC THERMOCOUPLE TYPE J THIS BOARD DISCONTINUED AT S N 2000932 Impinger II 1100 Series Service Manual International 51 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 Recalibrate the dial See Temperature Control DLO OV BONS THERMOCOUPLE PROBE The sensor bulb is located in the oven compartment behind the lower finger and held in position by a wire f
28. 141508831 ZL YE MINGNE 3509 v4 H2LIMS 9N11002 1081802 71915088381 LL YE 3504 ise HOLYUINSS suds 95 VL USHEOJENVMI 3504 24 h HOLCAS 13534 1002207 45 YCl uQLOH 25004 L 0 S 38155343 UIY NJAO HIOLLAS 95 OS1N02 3univH2d41l 3140812373 213 LING gt PE keg 9 WI F TON LN AJANOS 0114891 ANOJ 32019 IWNIWH3L HINA HOLEMS ES Qin S MOLI S dv3 12 TRAE a YCAIANOY POLIAS 25 TOWING HOLTAS NOT IN 32510 N340 EDLIMS 15 MW Y _ 0738 3 466105 WS Impinger 11 1100 Series Service Manual International SCHEMATIC1152 AND 1153 S N 2011821 AND ABOVE ESLL pue 291 STIGON 9N01318H2S3813gv3 0 ONY81904SN791 HOLYNYOISNYHL 11 0 2 HOLYHUOJSNYHL AS TL 4431 1137 YOLYWYOSSNYYL LHOISNYIONY 1 10 14 ONN LaNYH 9N013939901793d831 11 1114345113649 39132 4 31 1137 9831 U3134011N31Qd NI OG SIYTIHJNVTHJYN 06102 6 loe a 09 937413411 70 50 Veere OEC XO8 T1081N03 LVLSOWYIHL 53HOS NOM 3 i pe Mo 03481 ONNZ 3d0N3S9N01393 81N3S9N08015 Es ts is p Wadd 831401 H3LTYHISSINHO 431 WHOS 431 1H2530040 L RENN 431 TYHOS ONNNOHONY 831 1VHJS390805V9 YILTYHIS SNNNGHO
29. 150 P 369772 Terminal Block Q 370062 Electrical Box R 370063 Cover 5 Chart Next T Fuse Holders See Chart On Next Page U 369007 Thermostat Cool Down For Models 1100 1101 1102 1103 1104 1105 1106 76 Impinger II 1100 Series Service Manual International CONTROL COMPARTMENT REAR BLOW UP MODELS 1100 1106 MODELS 1130 1136 1150 1151 S N 2011383 AND BELOW MODELS 1160 1163 S N 2011978 AND BELOW A Impinger Il 1100 Series Service Manual International CONTROL COMPARTMENT REAR MODEL 1130 1136 1150 1151 S N 2011383 AND ABOVE MODEL 1160 1163 S N 2011978 AND ABOVE LETTER P N DESCRIPTION A 369186 Terminal Block End For 1 Phase Models 369188 For 3 Phase Models B 369185 Terminal Block 1 Phase Models 8 Required 369187 3 Phase Models 4 Required C 369120 Contactor 1 Phase 2 Pole 369178 3 Phase 3 Pole D 354258 Transformer For Models 1134 1135 1136 1150 354257 Transformer For Model 1151 Only E 369124 Cooling Fan F 369331 Finger Guard G 370062 Electrical Box H 370063 Cover Fuses See Chart Below J Fuse Holders See Chart Below K 369200 Relay L 369603 Conveyor Motor Assy See Page 116 for Breakdown M 369268 Set Screw N 369664 Sleeve only Conveyor Drive Coupling 369269 Ball Plunger P 369611 Coupling Conveyor Drive Complete Q 357067 Thermostat Hi Limit All Models except 1150 369583 Thermostat Hi Limit Model 1150 only R 369192 Capac
30. 2 AND STYLE 3 CONTROL BOARD ADJUSTMENT NOTE A digital meter must be used Voltage at L1 and L2 terminals of the control board is to be 120 VAC 10 Connect a Digital voltmeter to terminal T1 and T2 set the meter on DC scale Turn speed control pot on oven control panel to its maximum speed setting Impinger II 1100 Series Service Manual International gras o m 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 Read just if necessary If readjustment of either the or MIN pot was necessary the opposite must always be checked until both MIN and 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 be calibrated If afte
31. 3 769 846 1000 1078 1155 14 63 16 17 GF 401 1320 1474 1628 GF 406 1326 1450 1634 SOF Jan 1332 1436 1640 J U N C T I 0 N 52 Impinger II 1100 Series Service Manual International MERCURY CONTACTOR 6 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 NOTE Be sure contactor is not mounted upside down at this will cause a constant on condition Reassemble in reverse order GAS VALVE DO AND OT 3 Coco c 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 the gas pipe Remove the section of gas pipe to gas valve Disconnect the electrical leads from the solenoid valve Loosen the gas line union located near the burner and remove the gas valve and solenoid valve assembly Finish removal of the gas piping from gas valve Replace in reverse order Check all gas fittings for leaks Adjust the gas manifold pressure on the gas valve Refer to the specification plate on the oven for proper rating SOLENOID VALVE 1 Shutoff power at main breaker 2 Shutoff gas supp
32. 4 N3A0 821185 5 7091403 YOASANOD 22 5401791409 0854 50115 1 320 d Te 320 8 WNIWH3l 32008 1002 LEYIS NJAO Zu HJLIMS 39155344 div Say NOTING 81510 s3404 INK 9 1 3 NO 510 Impinger 1100 Series Service Manual International SCHEMATIC 1136 S N 2011383 AND ABOVE L 21 2 Uk We 2i JE 3404 uiu 3l dL BEEN H0 LOH Pre AOTTIA 734 al 69 IL HA M01389 I 1 102 NGS i 5 25 Tx SCHEMATIC 1151 S N 2011383 AND BELOW LSLL 1300M Suoi onsisut jueunsn ps PUR uort4sAUGO 104 201906 702569 sequinu Led Jemuonusiad E 922596 pito SUE VOLU NMEN p ddinbe AjeuiSuo PUE 0980002 SHUT 18 IKM 34 54 HINHOJSNYEL 3n18 HO 10 100 9105 es 25 100 H3A1IS OWA FEL H3WHO4SNVHI OVA OEL IOHLNO2 H3WHO4SNYH1 MALIN AVTSIG SAHO 45 79 HILIMOUNALOG 3dOuUd HOLSINHFIHL 3dno20Wu3iu IONIA OG AV TI HILIMOHDYL 135 HOLIMS 134 HOA3ANO2 HOLMS 1945 ONILY3M H2LIMS 033 4343 NYA NIY HOLIMS OMQ09 AV T3 1540 NY4 NIYA AvT3H M3002N3 1 2440 MOLONHY39
33. 588 Ball Stud 369693 Spacer for Ball Stud 369225 Baffle Inlet Outlet P 369211 Thumb Screw Q 370118 Cross Support R 369919 Stand Side 5 369231 4 Caster w Threaded Stem T 369232 Adjustable Leg 70 Impinger II 1100 Series Service Manual International GENERAL 1100 SERIES BLOW UP Impinger II 1100 Series Service Manual International 71 CONTROL COMPARTMENT FRONT MODELS 1100 Thru 1106 1130 Thru LETTER P N 369173 369536 369124 350224 350225 369522 369669 369907 369248 369247 370046 369260 369167 369680 369152 gt Zro x 369391 369172 369128 369520 369728 369155 O u Oz 369240 369509 369193 369131 369025 369189 369508 369507 AA 369640 lt lt 369685 CC 369605 72 1136 1150 1151 1160 Thru1163 DESCRIPTION Transformer 12 6 VAC Cordset Cooling Fan Cooling Fan Lens Yellow Lens Red Knob amp Dial Thermostat Front Panel Label w Set Button Except 1150 Front Panel Label w o Set Button Except 1150 Knob Speed Control Shaft Lock Button Only Switch On Off Switch Display Set Front Cover Assembly Potentiometer Conveyor All models prior to S N 2011383 and Mod els 1160 thru 1163 prior to S N 2011978 Potentiometer Conveyor S N 2011383 amp Up 1160 1163 S N 2011978 amp Up Display Time Temp Lamp Pilot Potentiometer Temperature Temperature Control Conveyor Control All Models prior to S N 2011383
34. AS 220 VAC 50 HZ 1 PHASE 240 VAC 50 HZ 1 PHASE GAS 240 VAC 50 HZ 1 TOWN GAS 220 240 VAC 50 HZ 1 PHASE 220 240 VAC 50 HZ 1 PHASE L P GAS 220 240 VAC 50 HZ 1 PHASE Electrical power to be supplied to the oven by a three conductor service When the temperature in the Control Box reaches 120 F 3 F 48 9 C 1 7 C the Cooling Fan Thermostat will switch power to the Control Box Cooling Fans The Thermostat will interrupt power to the Cooling Fans when the control box temperature falls to 100 F 3 F 37 8 1 7 C Power is permanently supplied to the normally open contacts of the oven fan relay the normally open cooling fan thermostat and to the normally open oven fan switch Closing the fan switch supplies line voltage through a 1A fuse to the primary of the power transformer the trans former steps the voltage down to 120 VAC for the control circuit 120 VAC is supplied to the cooling fans terminal 1 of the time delay relay and to the coil of the oven start relay These normally open contacts close enabling the 20 minute time delay relay The 20 minute time delay relay supplies 120 VAC to the oven fan relay its normally open contacts now close supplying line voltage to the main fan motor Closing the Fan Switch supplies line voltage through the 3 amp fuse and oven start relay closed by activating the Relay in the main fan circuit Closing the Burner Switch allows volta
35. BOJENYHL am 13804 a OL 354 uL WHA NS 060 SELETACOM A CIE OG EI PEEL TIGON A QE univ TEA Od HOLS YLNOO 04 SAHO 449 E3LINOLASLOS 3 a quyoq 10H1NO2 any o HINE Un2SI2 MOLON NY ADLE 03 Fi BOLISVAVI NY4 SNPIO03 LYLSONW3H TROON CLL VEL TION HDH ALAYO N3AQ LVLSOMHINL 38095354 HOLMS So888hz Ec 55 4 Impinger II 1100 Series Service Manual International 14 SCHEMATIC 1134 1135 S N 2011383 AND ABOVE SELL PELL STAGOW 21 p 2 Es Tp GD DIE Sra FT a 515 Z t a zie 8 e m 3 N 27 331 wee oo XX Wai wipe S 09718 NOlLO8IHISIQ 1434373 9NLLY2H Gr Ee 33400 dl Wl ge 9 r uo OH si I 3 M0138 275602 one 32078 831 NO31 8E 1511 31 THA 20978 9 2 Lax GHJEMN JHIA Vi Qd HOA3AN03 HIMAGASA VHL SWI LY 34H04SA WHL dWIL ATAWISSY 104 FYNLYHSEN L SHANIH OG JHL LIMET HOTH JHL 3611004 HOO 2 50 782106 MOATANGD HOLIMS NY4 NJAO HILIMS HOLIVENOI AMOJ 7007 IMY G N3AG AY 5H HOLOH NJAO AYTI
36. C 1152 THRU 1158 S N 2011383 amp 22 SCHEMATIC 1152 amp 1153 S N 2011821 amp 2 2 1 23 SCHEMATIC 1154 THRU 1158 S N 2011821 amp 24 TROUBLE SHOOTING GUIDE GAS OVENS 1152 THRU 1158 25 33 TROUBLE SHOOTING GUIDE ELECTRIC OVENS 1104 1105 1106 34 36 TROUBLE SHOOTING GUIDE ELECTRIC OVENS 1134 1135 1136 1150 37 40 TROUBLE SHOOTING GUIDE ELECTRIC OVEN 1151 41 46 REMOVAL INSTALLATION AND ADJUSTMENTS a 47 69 GENERAL PARTS BREAKDOWN dee enker giske en 70 GENERAL PARIS BLOW UP iu unu u He pee roe ub ewes 71 CONTROL COMPARTMENT FRONT PARTS BREAKDOWN 72 CONTROL COMPARTMENT FRONT BLOW UP 73 CONTROL COMPARTMENT FRONT 1152 THRU 1158 PARTS BREAKDOWN 74 CONTROL COMPARTMENT FRONT 1152 THRU 1158 BLOW 75 CONTROL COMPARTMENT REAR S N 2011383 amp BELOW 76 CONTROL COMPARTMENT REAR S N 2011383 amp BELOW BLOW UP 77 CONTROL COMPARTMENT REAR S N 2011383 amp ABOVE PARTS 78 CONTROL COMPARTMENT REAR S N 2011383 amp ABOVE BLOW UP 79 CONTROL COMPARTMENT REAR 1152 THRU 1158 S N 2011821 amp BE
37. CALIBRATE AIR SWITCH If switch will not activate when blower pressure is supplied turn adjustment screw counter clockwise If switch will not deactivate when blower pressure is eliminated turn adjustment clockwise SPARK GENERATOR 21 09 gr e o m 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 order IGNITER SENSOR PROBE 1 See Page D8 to remove hot surface ignitor 2 Unfasten screws and remove probe 3 Disconnect wires and replace probe in reverse order IGNITION CONTROL 1 Shut off power at main breaker 2 Remove control compartment covers 3 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 4 If replacing the control and base remove the control first and then 2 screws holding the base Mark wires prior to removal 5 Reassemble in reverse order Be sure base is correctly mounted or reset will not align with cover hole 68 Impinger II 1100 Series Service Manual International MOTOR BURNER BLOWER 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 Un
38. International OVEN BACK ASSEMBLY 1100 SERIES LETTER P N DESCRIPTION A 369182 Fan B 369899 Shroud Fan C 369655 Stand Off D 369560 Heating Element 200V Orange 369183 Heating Element 208V Red 369521 Heating Element 220V Yellow 369184 Heating Element 240V Blue E 369549 Rear Wall Electric Oven 369976 Rear Wall Gas Oven F 369581 Motor Support Assembly G 369181 Motor Main Fan 208 240V 60HZ 369196 Motor Main Fan 240V 50 HZ 369539 Motor Main Fan 120V 60 HZ H 369695 Clamp Bracket 369033 Clamp Motor J 369674 Rear Cover Assembly Electric Ovens S N 2011383 and Below 370049 Rear Cover Assembly All Ovens S N 2017384 to 2019884 369681 Rear Cover Assembly All Ovens S N 2019885 and Above 369540 Rear Cover Assembly Model 1116 1117 S N 2011383 and below 369675 Rear Cover Assembly Model 1152 1158 S N 2011383 and Below K 369979 High Limit Bracket L 369227 Catch Spring M 369541 Thermocouple Thermistor Bracket 84 Impinger II 1100 Series Service Manual International OVEN BACK ASSEMBLY 1100 SERIES BLOW UP Impinger 1100 Series Service Manual International GEARMOTOR ASSEMBLY 1100 SERIES LETTER P N DESCRIPTION A 369519 Motor DC Conveyor 369384 Motor Brush B 369294 4 Lock Washer C 369296 Screw 4 40 x 1 4 D 369290 Optical Encoder Assembly E 369151 Coupling And Encoder Disc 050 Allen Wrench Included F 369146 Hex Nut 4 40 G 369294 4 Lock Washer H 369292 Bracket Tach Generator 369297 Sc
39. LOW PARIS BREAKDOWN uteareal 80 CONTROL COMPARTMENT REAR 1152 THRU 1158 S N2011821 amp BELOW see Red ANS uha 81 CONTROL COMPARTMENT REAR 1152 THRU 1158 S N 2011821 amp ABOVE PARTS BREAKDOWN I de pedis 82 CONTROL COMPARTMENT REAR 1152 THRU 1158 S N2011821 amp ABOVE BLOW us sd 83 OVEN BACK ASSEMBLY PARTS 84 OVEN BACK ASSEMBLY BLOW 85 GEARMOTOR ASSEMBLY PARTS BREAKDOWMN eme 86 GEARMOTOR ASSEMBLY BLOW 87 CONVEYOR DOOR PARTS 88 GONVEYOR J DOOR BLOW UP ihe 89 2 Impinger II 1100 Series Service Manual International MODEL 1104 MODEL 1105 MODEL 1106 POWER SUPPLY MAIN FAN CIRCUIT HEATER CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE TIME TEMP DISPLAY SEQUENCE OF OPERATIONS 1104 thru 1106 ELECTRIC 380 220 50 HZ 3 PHASE ELECTRIC 415 240 50 HZ 3 ELECTRIC 240 VAC 50 HZ 1 PHASE Electrical power to be supplied to the oven by a five conductor service on Models 1104 and 1105 anda three conductor service on the 1106 Power is permanently supplied through a 10A fuse to the normally open contact of the main fan relay the normally open cool down thermostat and to the normally open main fan switch Closing the main fan switch supplies line voltage to the primary of the power
40. MINOO LVISONW HL 219 HOLYESNJD 5 HOSNIS3AYT4 LVLSOMHIHL 154 MOLMS 55 IFA IT d 39TH Sd NOUIN BANENE 195 1450 HOLS FS H3MSOISNYHI OVA STL GAY AS fa Jurssadd NILMS 2577 SYO HILIMS ES OHLMOO HOASANOO UM C a97d 4 NINO Jut SS3Hd HOLMS 194v 1949 sauna Hols TS HIMSOISNYMI Aw Tad L 3544 LW Y LI 3l HAMHOHSNYHL Ima HO I 100 N3349 I 100 709 X Y 100 HI3ATIS T Z 1 N f LL 54 I Y I v zd LT Ed OVA OZL 2n 038 99 ss t4 t5 BY V EDEN 21 Impinger 1100 Series Service Manual International SCHEMATIC1152 THRU 1158 S N 2011383 AND ABOVE Safan 3618 GO 80419802 WaWHC JENVU EYY 30104 NYA AVT3H ZM W3mCd wjun ieNvuL Z x NACO 1005 3 1zY15 NJAO AVY ld 13 OvA3 El uisonzSNvUL 18X H3407E AINA MOLOM FH 8SLL yno PSLL 51300 RE ELS 10114 3 ZA HOASANOD HOIDM EA NO L10938 38DlYN3dWil 3A YA LA 3 9417662 MOLON IM SUTTA AV ASIC dH3l 3Wll 11 N3AD HOLOW Ub ATBHISSY 104 3b01783d83 dl 13NQVM W S310N1W GZ AY130 HJMIL QL HOLVOLONE waNUna 9891 0011 uv3H 3dAL 319n00CHuzHL IL 495435 TWH SH D 32078 TyNIwuIL 81 805435 34 74 53
41. NONSHIIS j 542128340 WELTWHOS ES YOL HOLOH 531507 240u3H3 6 14 ONVILHOdSNYHL WSL TWHIS 25 AYLGSQWHSH NINO813413 913 HDiVTIINSA 83 0 8317805 15 CNYGISOQSNYEI d313W01LN310d d3 MOX2I2H 51135 ce 3330638 ONYALHOASNYHL 22 SNC THNS W LUYLG 930 19135 GN 044 5 2 HOLVSNSONON 19 TE WOO 18 550 IH3SNV WAU w336 519739 WAHYI 531401 WAL T6H2S39088 HILTYNIS NT L3 183 SSA THISNY 5 JEG Mon uf 32 13H 9NY1 3183A SSN HOSNY 5 0419373 gt N 2 609 Imi 2 WU Ge ERASE Wee 8123784 Mid 31 di a 69 55 89 33 TI 3 Qa 05 9 e OG Gr GU C 2 MOTE 8 9 1965102 5 TEX td Cip 5 5 2 Impinger II 1100 Series Service Manual International SCHEMATIC 1136 S N 2011383 AND BELOW 9E LL 1300 DRU anips UGO 10 d 109296 ses abo UDE 621890 Pu and YUM NAAA 041092 ei pedet Y peddinbe HEE waleq 0990002 jeues ERUN 42 HM Ed dau 22 93 5 sdy 3018 40100 101 0109 2 100 H3ATIS OWA 921 HIMHOSINVEL OHINGS HINHOJSNYHL WETO S313W6083104 30054 dQ1SIWU IL ALANIN OZ AY T2 INU 129 1v Vago HOLM
42. NY HINNIUG Wires ONVELMOdSNYYL H3LTYH 831 HOS HOLVTILNIA 330 YILTYHIS 6 ra x M y iu 2 9 m ES aie s D BS B oum Me See us Gr Eg di Hl J 104 ae B YOLOH a 2575 a D g 9 gt eux CUX Lax ZA iA 1 1 41 Qu 31 e 1 95 5 85 ss PG 5 z5 IS 831411 330 519134 Z SNNTHNSBV LHYLS N340 51734 t HILINTUINNIG ONVB180dSNVHI 80104 EM 9 131138 OMAN BALIN 94 SK ZM Oo N340 H INW YINNIYA JdWYTIOYANON 1 YOSNSSYSWHNS SH ONNHOYNHSBN 80536 3 63 HSNNSYE ONNUBHIIS VE TONVBLUCGSNVUL ONNUIHIIS 63 VE HOLYHUOSSNVEL 9 215 Zd 10 0108 831301 215 14 LVLSOWNSHE 31IN0813313 213 ONYV LHOdSNYNL 031300113108 dd 831939 QNYGlUOdSNYUl 3 04 5 2 HOLYSNJONOY 1 831938 2H WY Y e 1 522625268 30980 S P Pus tr 9088 822834202 23 Impinger 11 1100 Series Service Manual International SCHEMATIC 1154 THRU 1158 S N 2011821 AND ABOVE Safan 3618 GO 80419802 WaWHC JENVU EYY 30104 NYA AVT3H ZM W3mCd wjun ieNvuL Z x NACO 1005 3 1zY15 NJAO AVY ld 13 OvA3 El uisonzSNvUL 18X H3407E AINA MOLOM FH 8SLL yno
43. NYHI MOTI3A 1940 Wyd NISN LUNDHS H3LY3H LO We JANT TOHLNOO HOATANOS 3974 any v dord JAY 2874 2504 Error GENI JO CHYOR TOHLNCS OWY TO WINING NY j N VOLO dS MAQG 7009 NJAO LVISOMUIKL HOLMS 885 13 Impinger Il 1100 Series Service Manual International SCHEMATIC 1134 1135 1150 S N 2011383 AND BELOW OSLL pue SELL PELL 513001 GOEL ELL YELL TION OVA DEL ONANGO APGLUSALL SAHO NE TO Hall 3MO LN3LOd 14544 HOLSINHSHL ainumoz Aviad DAMN Uu MEDIDA OPG 70206 uu mau e an d une syed wou pewep vi uu NOD BINEI r WR peddinbe Asudpa mcg 9090905 Jequinu Eu ie FRUN r aay pg td LAM MOTTIA H Ed 038 22 94 d H3PHO48NYH ama LOG N33H3 100 0109 10 fy 2 OWA TEL HIRHOSNVMI Bg sans Wea ONO ATTER ised ra MV AY138 120 40 HOLONUY3O NY4 0417605 OZON 2400 NVJ MYN VOOM done Wait LO av W OASANOS t 3804 Laura SNLLY3H P AY 334 7HIM
44. OPERATED WITH HEAT SINK DISCONNECTED OR BURNOUT WILL OCCUR IN SECONDS 64 Impinger II 1100 Series Service Manual International CURRENT SENSE DO NOT ADJUST Heat Sink Red Conveyor re Blue Red but Speed Adj Speed Adj Gray LOCKED ROTOR POTENTIOMETER f 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 DIP SWITCHES FOR 50 SEC TO 30 MIN TIMES CONTROL 1 2 3 4 5 SWITCH POSITION OFF OFF ON OFF OFF DIP SWITCHES FOR 23 SEC TO 30 MIN TIMES CONTROL 1 2 3 4 5 SWITCH POSITION OFF ON OFF OFF OFF 2 With power off the ten 10 dip switches located on rear of Time Temp Display see drawing on page D15 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 B ON ON OFF OFF ON OFF ON Impinger II 1100 Series Service Manual International 65 For time temp displays using a thermocouple red wire on 9 and white wire on 10 Off for F set the dip switches as follows On for DISPLAY 1 2 3 4 5 6 7 8 9 10 SWITCH POSITION OFF OFF OFF OFF ON ON OFF ON 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
45. 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 220V 30 ohms approximately 240V 36ohms X approximately The mercury contactor has probably malfunctioned in the closed position If there is no voltage to the operating coil but there is high voltage at the contactor output replace the mercury contactor The main fan is equipped with internal of motort hermal protection and will cease to operate if overheating occurs If the motor overheats and then cools this will cause the unit 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 39 Conveyor will not run S N 2011383 and above Conveyor speed varying or intermittent S N 2011383 and above Time Temp Display inoperative S N 2011383 and above Temp Display out or inaccurate S N 2011383 and above REFER TO PAGE 31 REFER TO PAGE 45 REFER TO PAGE 32 REFER TO PAGE 45 REFER TO PAGE 33 REFER TO PAGE 45 REFER TO PAGE 34 REFER TO PAGE 45 Impinger II 1100 Series Service Manual International MODEL 1151 TROUBLESHOOTING GUIDE ELECTRIC OVEN 200 VAC THREE PHASE 60 HZ REFER TO PROPER SCHEMATIC FOR INDENTIFIED COMPONENTS SYMPTON Oven fan will not run No main fan cool down POSSIBLE CAUSE
46. PSLL 51300 RE ELS 10114 3 ZA HOASANOD HOIDM EA NO L10938 38DlYN3dWil 3A YA LA 3 9417662 MOLON IM SUTTA AV ASIC dH3l 3Wll 11 N3AD HOLOW Ub ATBHISSY 104 3b01783d83 dl 13NQVM W S310N1W GZ AY130 HJMIL QL HOLVOLONE waNUna 9891 0011 uv3H 3dAL 319n00CHuzHL IL 495435 TWH SH D 32078 TyNIwuIL 81 805435 34 74 53 141508831 ZL YE MINGNE 3509 v4 HIL MG 9N 1003 XOF 10810 1Y1SCHH3Hl LL VE 3504 ise HOL VHINES suds 95 VI H3MHOJSNYVUL 3504 24 h HOLCAS 13534 1002207 45 YCl uQLOH 25004 L 0 S 38155343 UIY NJAO HIOLLAS 95 OS1N02 3univH2d41l 3140812373 213 Bu Up M WI F TON LN AJANOS 0114891 ANOJ 32019 IWNIWH3L HINA HOLEMS ES Qin S MOLI S dv3 12 TRAE a YCAIANOY POLIAS 25 TOWING HOLTAS NOT IN 32510 N340 EDLIMS 15 MW Y _ 0738 3 466105 WS Impinger 1100 Series Service Manual International 24 TROUBLE SHOOTING GUIDE GAS OVENS MODELS 1152 1153 1154 1155 1156 1157 1158 REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS SYMPTOM Oven fan will not run POSSIBLE CAUSE Incoming Power Supply Main Fan Switch Control Box High Limit Thermostat NOTE Discontinu
47. Probe P 370031 Bypass Orifice For Models 1152 1154 1157 369557 Bypass Orifice For Models 1153 1155 1158 Q 369571 Connector 4 Pole R 369570 Connector 3 Pole 5 369580 Gas Valve Multi Block T 369578 Hose U 369917 Connector 1 2 Tube to 1 8 Pipe Thread V 369401 Air Shutter Assembly W 369589 Burner Blowers X 369533 High Limit Control Compartment Y 369579 Solid State Alarm 2 369331 Finger Guard AA 369335 Fuse 1 Amp 369013 Fuse 3 Amp 369014 Fuse 10 Amp BB 357107 Fuse Holder CC 369583 Thermostat Oven Cavity High Limit For Models 1152 1153 357067 For Models 1154 1155 1157 1158 DD 369137 Circuit Breaker 0 2 Amp EE 369124 Cooling Fan 369535 Cooling Fan Cordset FF 369512 Sleeve Only Conveyor Drive Coupling GG 369268 Set Screw HH 369269 Ball Plunger JJ 369376 Terminal Block 3 Pole KK 370148 Back Cover Assembly LL 369190 Conveyor Drive Coupling 80 Impinger II 1100 Series Service Manual International CONTROL COMPARTMENT REAR BLOW UP MODELS 1152 1153 1154 1155 1157 1158 S N 2011821 AND BELOW Impinger Il 1100 Series Service Manual International CONTROL COMPARTMENT REAR MODELS 1152 THRU 1158 S N 2011821 AND ABOVE LETTER P N DESCRIPTION A 369771 Reset Switch Ignition Control B Thermostat Oven Cavity Hi Limit 369583 For Models 1152 1153 357067 For Models 1154 thru 1158 C 369664 Sleeve Only Coupling Assembly D 369268 Set Screw E 369269 Ball Plunger Screw F 369611 Coup
48. S 1543 HCA3ANO HOLAS 1849 HOLUAS ASdS NY ANIYA HALAS MOTA NV AVTEH 4540 HYJ 06 Y 4 HOLON 109413 831Y3H 107 YT 2904 E IS 337 5 HANNO SNL IBEN MOLOM NT NIYA 01 3504 Ab VB Id THY OG 08 LNQO gt 09 TKA L BOLTVINCO AUNDUIN OL SAHO 0 0 4113 1 04 HOLOW NY NA SO1RYdY2 gt DHTYOOO LVLSONNSML ITI HOH ALAYI NMO LVLSONMSHL 3 rS93tid HIV NOIME 6Essesc Ec 17 Impinger II 1100 Series Service Manual International 9611 lapon HOLGA NVI NJAO AV 3H lH HOLCK EH SYIHIN Jeta B NYA 2911009 HOLEN pH ZH HJW0d EX NYH NIAD HOLCH LH HJAJANOT 5 Zax IL H3WuDdoNvH LHX HOIVJIQNI MXIN3H Yl 1 AWIL IL 1 1 HOSN3S 113443 SH ATGHISSY 104 38NLYS3IdH3L dl 579 8 008 51N34313 9N LY3H H 02 4130 83911 01 OWLNDD 3unlvudd43i INA 93 P JINOIY 21 VE 77081802 HOAJANOJD ISNA 11411 21 Wi MIMHO GSN 3504 23 9 11000 XOG 1051409 IYISCHEJHL tL VOL HUISA 3504 14 N3A0 BILLAG EG O81802 281199348421 23180812313 213 YOASANO 26 ATGHIGGY 104 8043402 d NY
49. SERVICE MANUAL INTERNATIONAL IMPINGER CONVEYOR OVENS MODEL 1100 SERIES 9 Lincoln Lincoln Foodservice Products Inc 1111 North Hadley Road Fort Wayne Indiana USA 46804 United States of America Phone 800 374 3004 Fax 260 436 0735 Technical Service Hot Line 800 678 9511 www lincolnfp com 1100exportsvc REV 12 8 05 TABLE OF CONTENTS SEQUENCE OFOPERATIONS 1104 THRU 1106 3 4 SEQUENCE OF OPERATIONS 1134 1135 1136 1150 5 6 SEQUENCE OF OPERATIONS TIE least 7 8 SEQUENCE OF OPERATIONS 1152 THRU 1158 tee 9 11 SCHEMATIC 1104 1105 12 SCHEMATIC TIUS u usus t i chante ene 13 SCHEMATIC 1134 1135 1150 S N 2011383 amp 14 SCHEMATIC 1134 1135 S N 2011383 amp 15 SCHEMATIC 1150 S N 2011373 amp ABOVE 22 asia 16 SCHEMATIC 1136 S N 2011383 amp ABOVE u 17 SCHEMATIC 1136 S N 20211383 amp 18 SCHEMATIC 1151 S N 2011383 amp 2 2 19 SCHEMATIC 1151 S N 2011373 amp ABOVE pige kara 20 SCHEMATIC 1152 THRU 1158 S N 2011383 amp 21 SCHEMATI
50. TH POWER OFF remove the potentiometer leads from the Impinger II 1100 Series Service Manual International Mercury Contactor Heater Elements Oven heats with switch off Mercury Contactor Intermittent Heating Thermal Overload of motor Conveyor will not run S N 2011383 and above Conveyor speed varying or intermittent S N 2011383 and above Time Temp Display inoperative Impinger II 1100 Series Service Manual International 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 potentiometer If the thermocouple probe and the control potentiometer check good then the problem is usually with the temperature control board Check for 120 VAC to the contactor coil If voltage is present and contactor will not activate replace the contactor Also check each contactor for proper high voltage input and output 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 ele
51. ace 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 Disconnect the thermistor probe leads from the time temp display terminals 9 and 10 Measure the resistance of the thermistor probe See chart in section D showing probe resistance at various oven temperature If these readings are not achieved replace the thermistor probe Place your pyrometer 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 in Section D for proper readings Connecttemperature meter to thermocouple at terminals 9 amp 10 on back of the time temp display Be sure to maintain proper polarity on thermocouple connections Compare actual oven temperature with the reading at the time temp display If the temperature readings match recalibrate or replace time temp display If the readings do not match replace thermocouple probe If a strange or unusual behavior is 45 Temp display inaccurate erratic or inoperative Time Temp Display Time Display inaccurate erratic or inoperative Conveyor Drive Stepper Motor Magnet Hall Effect Sensor Conveyor Drive Stepper Control 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 volta
52. age or damage See Adjustment section for location If above checks are okay but pressure Switch is still not closed replace gas valve Check air switch terminals for supply voltage at NO 2 and COM If voltage is present on one side only check for air tube blockage or misalignment If these are okay adjust Switch or replace necessary Terminals are normally closed Thermostat opens at 660 F 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 check okay replace hi limit thermostat Check for proper supply voltage to ignition control 27 Burner Blower Motor Air Pressure Switch Burner Blower Spark Generator Ignitor Sensor Assembly Gas Valve 28 Check for proper line voltage to the Burner Blower Motor This can be checked at motor connecting plug terminal 2 and 5 If voltage is present proceed with next step if not wait 30 seconds push reset button and try to restart If this fails check wires from Thermostat and Burner Blower Motor to the Ignition Control If all above fails and wires are okay replace ignition control Check for supply voltage to motor WITH POWER OFF turn blower wheel to check for locked rotor If proper supply voltage is present at motor connecting plug terminal 2 and 5 and mo
53. anual 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 Impinger II 1100 Series Service Manual International 59 TRANSFORMER TIME TEMP DISPLAY Shut off power at the main breaker Remove conveyor Remove front control compartment cover Removetransformer wires and mark for replacement Remove 2 mounting screws and replace transformer Reassemble in reverse order OX gr TIME TEMP DISPLAY 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 6 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 7 Replacein reverse order NOTE BEFORE TURNING ON POWER SET THE DIP SWITCHES TO THE PROPER SETTING NEED DIP SWITCH SETTING CHART To identify the module measure the width of the case Type I is 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 I amp Il have a 6 position dip switch module Type lll has a 10 position dip switch mod
54. ap voltage to each leg must be 1 2 the total reading The speed side of the Time Temp Display is supplied by the Conveyor Control with the frequency of the pulses to the Conveyor Motor This frequency is converted by the Time Temp Display into a read out of minutes and seconds Impinger II 1100 Series Service Manual International NOTE The Conveyor Control uses a sensor and magnet mounted on the Conveyor Motor that senses when the motor is not turning If the motor is not turning the Time Temp Display will show in the window The temperature portion of the display uses a Thermistor Probe to sense oven temperature The Thermistor outputs a resistance proportional to oven temperature This resistance is then converted by the Display into a temperature reading OR The temperature potion of the display uses a J type thermocouple to measure oven temperature The thermocouple generates D C millivolts proportional to oven temperature This millivolt reading is then converted by the display into a temperature reading Impinger II 1100 Series Service Manual International 11 SCHEMATIC 1104 1105 Uu MYR SAT OL 2 NYANYA HOLAS iS TUNEL OYORE 313 s DWA VEL gt bax 1690 WY4 NIVA AVTIM LW amp ILBOON A WE TROON OUO POLL RCO won SIN NTYE DH VEH SYA WZ 2 iux NYd
55. blem continues jumper the two fuses in the red wires leading from the 12 6 VAC trans former 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 Section D for instructions Remember when using the time temp simulator remove all the leads from the back of the display except the 3 power leads After completion of this test and if reinstalling 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 refer to the next section optical encoder The above time temp test should have already been performed Remove the dust cover from the gearmotor and inspect the coupling and encoder disc The coupling set screws should be tight and not slipping on the motor shaft or the tach generator shaft The encoder disc should be firmly attached to the coupling and not warped Check the positioning of 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 t
56. ce Manual International Flame will not stay on Flame Sensor Power Supply Ignition Control Pilot lamp is on but no main flame Temperature Control Thermocouple Probe Temperature Control Potentiometer Impinger Il 1100 Series Service Manual International To check for flame sensor operation connect a digital multimeter capable of measuring D C micro amps between the flame sensor wire and terminal F on the Honeywell Ignition Control or terminal 1 on Landis amp Gyr Ignition Control Sensor current from Honeywell is 2 to 4 D C micro amps Sensor current from Landis amp Gyr is 3 micro amps minimum If these readings are not achieved replace ignitor sensor assembly Also check for any type of damage to flame sensor wire and connections 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 If there is sufficient micro amp current but the flame will not stay lit check for proper polarity of the power supply If there is sufficient flame sensor current but the burner will not remain ignited check the reset button on ignition control If all above are okay replace ignition control Check for 120 VAC across terminals 10 and 11 on temperature control board If no voltage is present check wiring back to the Main Fan Switch Turn the temperature adjustment knob to the maximum temperature p
57. ch 1 on stepper control board as described on Page D20 Reassemble in reverse order TRANSFORMER STEPPER MOTOR CONTROL Qr gro 66 Shut off power at main breaker Remove conveyor Remove front cover Disconnect transformer wire harness Remove two 2 mounting screws Reassemble in reverse order Impinger II 1100 Series Service Manual International HALL EFFECT SENSOR REPLACEMENT Remove two 2 mounting screws and remove sensor from conveyor motor Reinstall in reverse order THE FOLLOWING COMPONENTS ARE USED FOR MODEL 1152 1158 ONLY GAS VALVE MULTI BLOCK FOR MODELS 1152 Through 1158 SIDE VIEW TOP VIEW OUTPUT MANIFOLD CONTROLLER FRE SURE ADJUSTMENT ADJUSTMENT Cc H ELECTRICAL FILTER FILTER COVER COVER PLATE PLATE o H ELECTRICAL REMOVAL PROCEDURE 1 Turn off power atthe circuit breaker panel 2 Turn off gas in main line before the flexible hose 3 Remove control compartment covers 4 Remove 4 screws from bulkhead plate on back of oven at gas pipe 5 Remove gas pipe and bulkhead plate from gas valve 6 Remove the 2 electrical plugs from the gas valve 7 Unscrew the aluminum tubing connector from the gas valve 8 Remove the cross brace from the top of the control cabinet 9 Unscrew the pipe union and remove the gas valve 10 Reassemble in reverse order and check for gas leaks ADJUSTMENT PROCEDURE Refer to drawing above Re
58. closing Check for opens shorts or grounds WITH POWER OFF Turn fan blade to check for locked rotor Check for opens shorts or grounds Check for 120 VAC at terminal 2 to neutral while oven is Turn off the main fan switch 120 VAC should continue to be present for 20 minutes If voltage is not present for approximately 20 minutes replace the timer 41 Main fan continues to to run after cool down No control box cooling No automatic control Control box cooling fan continues to run Oven will not heat 42 Relay Main Fan 20 Minute Time Delay Relay Main Fan Main Fan Relay Oven Start Cooling Fan Motor Thermostat Cooling Fan Cooling Fan Motor Thermostat Cooling Fan Main Fan Motor Switch Heat Air Pressure Switch Temperature Control Thermocouple Probe Temperature Control Potentiometer Check if relay is operating and that the contacts r emain closed during the 20 minute cool down NOTE ON OFF operation of fan switch will set the timer to 20 minutes If the timer is accidentally reset turn off main breaker for 15 seconds to cancel If 120 VAC continues to be present at terminals 2 and 3 after 20 minutes replace the timer Relay Contacts should open when the relay coil is de energized Check for main fan operation If not operating refer to Oven Fan Will Not Run Check relay contacts 120 VAC should be present 120 VAC should be present at the fan motor If
59. e Temp Display inoperative Temp display out or inaccurate Conveyor Drive Stepper Motor 12 VAC Power Supply Transformer Time Temp Display NOTE Time Temp displays use two types oftemperature sensors thermistor probe 2 yellow wires thermo couple probe probe 1 red wire and 1 white wire Thermistor Probe Thermocouple Probe Power Supply Impinger II 1100 Series Service Manual International present at both sets of terminals replace control Check the drive sprocket on motor output shaft to insure that it is tight WITH POWER OFF Turn the motor shaft to check for jammed gear box Check motor wind ings 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 Pl
60. e 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 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 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 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
61. ed at S N 2011821 Fuse 1 Amp Fuseholder Transformer Step Down Oven Start Relay 20 Minute Time Delay Main Fan Relay Fuse 10 Amp Fuseholder Motor Capacitor Main Fan Motor Impinger II 1100 Series Service Manual International EVALUATION Check circuit breakers reset if required call power company if needed Check continuity between switch terminals Terminals are normally closed and open at 170 F 5F 76 6 2 8 O Check for over heating and reset thermostat Test for proper operation If it will not reset and hold re place thermostat Check replace if necessary Check replace if necessary 120 VAC 10 should be present at secondary of transformer If proper voltage is not present check transformer primary for proper input Replace as needed Check for 120 VAC to relay coil If voltage is not present trace wiring back to power source If voltage is present check to insure contact is closing 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 cool down relay contact is closed replace Time Delay 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 Check rep
62. ement Remove center mounting screw Reassemble in reverse order NOTE Do not overtighten the mounting screw as this may damage the internal potted electronic components COOLING FAN POL dea ce 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 1152 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 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 OQ gu oq t RELAY DPST 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 DOT oq st THERMOSHETAT COOLING FAN Qr omm Shut off power at main breaker Remove conveyor Remove front control compartment cover Remove lead wires and mark for reassembly
63. ent and unit is not heat ing refer to Mercury Contactor for next check If 120 VAC is not present proceed WITH POWER ON AND THERMOCOUPLE LEADS ATTACHED TO THE TEMPERATURE CONTROL BOARD measure D C millivolt output of these leads Refer to thermocouple chart in Section D for proper readings If these readings are not achieved replace 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 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 potentiometer If the thermocouple probe and the control potentiometer check good then the problem is usually with the temperature control board Check for 120 VAC to the contactor coil If voltage is present and contact will not activate replace the contactor Also check each contactor for proper high voltage input and output 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
64. es Service Manual International SEQUENCE OF OPERATIONS 1151 MODEL 1151 POWER SUPPLY CONTROL BOX AUTO COOL DOWN MAIN FAN CIRCUIT HEATER CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE S N 2011383 and above REFER TO PAGE B15 TIME TEMP DISPLAY Impinger II 1100 Series Service Manual International ELECTRIC 200 VAC 60 HZ 3 PHASE Electrical power to be supplied to the oven by a four conductor service When the temperature in the control box reaches 120 F 3 F 48 9 C 1 7 C the Cooling Fan Thermostat closes switching power to the Cooling Fans The thermostat will open at 100 F 3 F 37 8 C 1 7 C interrupting power to Cooling Fans Power is permanently supplied through a 1A fuse to the primary of the step down transformer The transformer steps the voltage down to 120 VAC for the control circuit 120 VAC is supplied to terminal 1 of the 20 minute time delay relay through the normally closed hi limit thermostat to a normally open contact of the oven start relay the cooling fan thermostat and to the normally open main fan switch Closing the fan switch energizes the oven start relay These normally open contacts now close enabling the 20 minute timer delay The 20 minute time delay relay supplies 120 VAC to the coil of the oven fan relay these normally open contacts now close supplying 200 VAC to the main fan motor The cooling fans time temp display conveyor switch and heat switch are also energi
65. g the Fan Switch ener gizes 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 this normally open contact now closes supply ing line voltage to the main fan motor The cooling fans and the time temp display transformer are also energized Closing the Heat Switch supplies 120 volts AC through the normally open Air Pressure Switch closed by air pressure from the Main Fan the 3 Amp Fuse to terminal L1 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 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 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 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 turn
66. ge 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 Perform the power supply check the thermistor probe check and then perform the time temp simulator test Refer to Section D for instructions Remember when using the time temp simulator remove allleads from the back of the time temp display except the 3 power leads After completion of the test and if re installing time temp display back in the oven the dip switches must be reset for oven operation and the time temp display must be recalibrated If readings are not achieved replace display Perform all checks as in the above evaluation If the time check is okay refer to the next section Check to see if the conveyor drive stepper motor is running If motor is not running refer to Conveyor will not run on Page 45 Check to insure that the magnet cemented to shaft of conveyor drive stepper motor has not been damaged or come loose from motor shaft Replace as needed Check for any physical damage to Hall Effect sensor mounted on conveyor drive stepper motor Check all wiring and connections for damage If the motor is running the magnet is in
67. ge to be supplied through the normally open gas pressure switch located in gas valve and closed when proper gas pressure is present through the normally open Air Pressure Switch closed by air pressure from main fan through the normally closed oven cavity high limit thermostat opens at 662 F 350 C which is manually resetting after a 18 F 10 C drop and to the ignition control The Ignition Control switches 220 or 240 VAC to the combustion Blower Motor the normally open combustion Air Switch closes upon sensing air pressure in the burner housing After a pre purge period of between 30 and 60 seconds the Spark Generator is energized the Main Gas Valve Solenoid Valve and Burner Pilot Light are energized and ignition should now occur When the burner ignition occurs the Flame Sensor must provide micro amps normally 2 4 to the Ignition Control within 1 second or the burner system will shut down and the buzzer alarm will sound To recycle the burner switch off the burner switch this will disable the buzzer wait 30 seconds push IN the reset button for the ignition control and turn on the Burner Switch The burner sequence of events should now reoccur Closing the Fan Switch supplies 120 VAC to the Electronic Temperature Control The 2 5K ohm Temperature Potentiometer is CONVEYOR DRIVE S N 2011821 and above Page B15 TIME TEMP DISPLAY S N 2011821 and above Refer to Page B15 AUTOMATIC COOL DOWN CONVEYOR DRIVE
68. he Fan Switch keeping the Cooling Fan and Main Fan in operation until the oven cools down to approximately 200 F 93 3 C 4 Impinger II 1100 Series Service Manual International SEQUENCE OF OPERATION 1134 1135 1136 1150 MODEL 1134 MODEL 1135 MODEL 1136 MODEL 1150 POWER SUPPLY CONTROL BOX AUTO COOL DOWN MAIN FAN CIRCUIT HEATING CIRCUIT TEMPERATURE CONTROL CONVEYOR DRIVE S N 2011383 and above REFER TO PAGE B15 TIME TEMP DISPLAY Impinger II 1100 Series Service Manual International ELECTRIC 220 380 VAC 50 HZ PHASE ELECTRIC 240 415 VAC 50 HZ PHASE ELECTRIC 240 VAC 50 HZ 1 PHASE ELECTRIC 220 380 VAC 50 HZ 3 PHASE Electrical power to be supplied to the oven by a three conductor service on single phase and a five conductor service on three phase When the temperature in the control box reaches 120 F 3 F 48 9 C 1 7 C the Cooling Fan Thermostat closes switching power to the Cooling Fans The thermostat will open at 100 F 3 F 37 8 C 1 7 C interrupting power to the Cooling Fans Power is supplied by Line 1 on Model 1136 and L2 on 1134 1135 and 1150 to the normally open main fan relay Power is also supplied from Line 1 through the 1 Amp Fuse to the primary of the Step Down Transformer 120 V AC is continuously supplied from Transformer secondary to terminal number 1 of the 20 Minute Timer and through the High Limit Thermostat normally closed to the Main Fan Switch Closin
69. he 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 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 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 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 min The temperature portion of the Time Temp Display uses a Thermistor Impinger Il 1100 Series Service Manual International 3 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 the oven reaches operating temperature the normally open Oven Cool Down Thermostat closes After the oven is switched OFF the Ther mostat bypasses t
70. hen replace the optical encoder assembly 33 TROUBLE SHOOTING GUIDE ELECTRIC OVENS MODEL 1104 380 220 VAC THREE PHASE 50 HZ MODEL 1105 415 240 VAC THREE PHASE 50 HZ MODEL 1106 240 VAC SINGLE PHASE 50 HZ REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS SYMPTON Oven fan will not run No control box cooling No main fan cool down Oven will not heat POSSIBLE CAUSE Incoming Power Supply Fuse 1 Amp Fuseholder Switch Main Fan Transformer Control Main Fan Relay Fuse 10 A Main Fan Fuse Holder Main Fan Motor Capacitor Cooling Fan Motor Cool Down Thermostat Main Fan Motor High Limit Thermostat EVALUATION Check circuit breakers Reset if required Call Power Co if needed Check replace if necessary Check replace if necessary Check for continuity between switch terminals 120 VAC 10 should be present at secondary of transformer If proper voltage is not present check transformer primary for proper input Replace as needed Check continuity to 120 VAC coil Check for power to relay coil 120 VAC Check for 220 240 VAC to the relay terminals Check replace if necessary Check replace if necessary Check replace if necessary Check for opens shorts or grounds WITH POWER OFF Turn fan blade to check for locked rotor Check for opens shorts or grounds Check for main fan operation If not operating refer to Oven fan will not run 120 VAC should be present
71. itor 7 5 MFD 5 353014 Ground Lug T 369682 Back Cover Assembly S FUSEHOLDERS TAMP BULE 1100 FE p is 2 sr 1 fr gt bt E FEE Fr s eee EL 115 2 1133 2003880 2003880 2003879 2003880 2003879 2003880 2 1160 n T s 78 Impinger 1100 Series Service Manual International CONTROL COMPARTMENT REAR BLOW UP MODELS 1130 1136 1150 1151 S N 2011383 AND ABOVE MODELS 1160 1163 S N 2011978 AND ABOVE Impinger II 1100 Series Service Manual International 79 CONTROL COMPARTMENT REAR MODELS 1152 1153 1154 1155 1157 1158 S N 2011821 AND BELOW LETTER P N DESCRIPTION A 369573 Control Burner Ignition B 369574 Spark Generator C 369192 Capacitor 7 5 MFD Main Fan Motor D Gear Motor Assembly See page 116 for Breakdown E 370036 Main Orifice For Models 1152 1154 1157 369524 Main Orifice For Models 1153 1155 1158 F 369575 Air Switch G 369386 Support Chain H 369576 Flareless Tube Fitting Bypass Tube Assembly 369561 For Models 1152 1154 1157 369404 For Model 1153 369405 For Model 1155 369562 For Model 1158 J 369689 Plug Pressure Test K 369398 Solenoid Valve L 369656 High Voltage Lead Spark Igniter M 369657 Flame Sensor Lead N 369654 Venturi Tube Natural 369939 Venturi Tube L P O 369590 Igniter Sensor
72. l Replace if required Both the main fan motor and the burner blower motor are equipped with internal thermal protection and will cease to operate if overheatingoccurs As the motors overheat and then cool this will cause the unitsto cycle on and off intermittently This may be caused by improper ventilation or preventativemaintenance Also most of the problems listed under Oven Will Not Heat can cause intermittent failure Check and replace if defective Check and replace if defective Check for continuity between switch terminals Check for continuity between switch terminals This is a 0 to 5 K ohm 10 turn WITH POWER OFF Remove the red black and white pot leads from the motor control board at terminalsP1 P2 and With digital multimeter check the ohm reading across the red lead to the black lead This reading shouldbe 5 K ohms 5 as the pot is rotated from low to high Place the meter leads on the redlead and on the white lead 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 the 3 amp fuse and
73. l contribute to excessive load bearing wear and wearing of slider bed rods Check power supply at the DC control board for the 120 VAC 10 at board terminals L1 and L2 If voltage is not present trace wiring back to the power input chck the main circuit breakers and call the power company if necessary With the power to the DC motor control board turned off remove the leads from terminals T1 and T2 Place the test leads of a digital 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 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 ap proximately 150 to 160 VDC and steady within approximately 2 to 3 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 31 DC Gearmotor Time Temp Display 12 6 VAC Power inoperative Supply S N 2011821 amp Above Refer to Page 45 Temp Display out or NOTE Time Temp displays erratic uses two types oftemperature sensor Thermistor Probe 2 yellow wires Thermo couple Probe 1 red wire and 1 white wire Thermistor Probe
74. lace if necessary Check replace if necessary Check for opens shorts or grounds Check for supply voltage to main fan motor If voltage is not present trace wiring back to main fan relay Check for opens shorts or grounds WITH POWER OFF turn fan blade to check for locked rotor 25 No main fan cool down Main fan runs after 20 minute cool down No control box cooling No automatic control box cooling 26 20 Minute Time Delay Relay Main Fan Relay Cool Down Relay Time Delay Main Fan Relay Incoming Power Main Fan Switch Control Box High Limit Thermostat Note Discontinued at S N 2011821 Fuse 1 Amp Fuseholder Step Down Transformer Cooling Fans Incoming Power Supply Control Box Hi Limit Discontinued at S N 2011821 Fuse 1 Amp Fuseholder Step Down Transformer Check for 120 VAC at pin 2 and 3 while main fan is running Turn off main fan switch and 120 VAC should continue to be present for 20 minutes Check if relay is operating and terminals are remaining closed for main fan cool down of 20 minutes NOTE The time delay relay will keep the coil of the main fan relay closed maintaining main fan operation for cool down for approximately 20 minutes Contacts of the relay should open when main fan is switched off 120 VAC at terminal 2 should discontinue approximately 20 minutes after main fan is switched off If cool down relay is open and voltage continues at terminal 2
75. ling Assembly G 369603 Stepper Motor Assembly See Page 116 for Breakdown 369566 Main Only Models 1152 1154 1157 369524 Main Orifice Only Models 1153 1155 1158 J 369561 Bypass Tube Assembly For Models 152 1154 1157 369562 For Models 1153 1155 1158 K 369689 Plug Pressure Test L 369398 Solenoid Valve 1154 1158 369889 Solenoid Valve 1152 1153 M 369656 High Voltage Lead Spark Igniter N 369657 Flame Sensor Lead O 369654 Venturi Tube Natural 369939 Venturi Tube L P P 369590 Igniter Sensor Probe Q 369575 Air Switch R 369786 Ball Chain Air Switch 5 369556 Bypass Orifice Models 1152 1154 1157 369557 Bypass Orifice Models 1153 1155 1158 369571 Connector 4 Pole U 369570 Connector 3 Pole V 369580 Gas Valve Multi Block 370091 Support Bracket Switches X 369576 Flareless Tube Fitting Y 369578 Hose Z 369917 Connector Male 1 2 tube to 1 8 pipe AA 369401 Air Shutter Assembly BB 369589 Burner Blower Motor Assembly CC 369331 Finger Guard DD 369579 Solid State Alarm EE 357107 Fuse Holder 369335 1 Amp Fuse 369013 3 Amp Fuse 369014 10 Amp Fuse FF 369137 Circuit Breaker 0 2 Amp GG 369124 Cooling Fan HH 369573 Ignition Control 369574 Spark Generator JJ 369376 Terminal Block 3 Pole KK 369192 Capacitor 82 Impinger II 1100 Series Service Manual International CONTROL COMPARTMENT REAR BLOW UP MODELS 1152 THRU 1158 S N 2011821 AND UP Impinger II 1100 Series Service Manual
76. ly 3 Remove rear control box cover 4 Disconnect wires from solenoid valve Mark wires for reassembly 5 Loosen pipe union in piping assembly 6 Remove 4 nuts from burner manifold and remove valve assembly 7 Remove piping from solenoid valve 8 Reassemble in reverse order NOTE Some piping changes may be required See instructions supplied with replacement part HEATING ELEMENTS 1 Shutoff power at main breaker 2 Remove back cover 3 Disconnect heater element wire and mark for reassembly 4 Disconnect motor wiring and mark for reassembly 5 Remove oven back from oven 6 Remove fan shroud 7 Heater element may now be unbolted and removed 8 Check heater elements to be sure they are the proper replacement 9 Reassemble in reverse order NOTE Be sure the lead terminals are tight Impinger II 1100 Series Service Manual International IGNITION CONTROL Shut off power at main breaker Shut of the gas supply in the main line to the oven Remove conveyor Remove 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 mo Me L2 NEUTRAL 26 am 34 35
77. mble in reverse order ORIFICE BYPASS 1 2 Loosen flare nut and remove bypass orifice Reassemble in reverse order THERMOSTAT HIGH OVEN CAVITY OOP 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 wireholder 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 NBD NR 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 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 International 55 LAMP PILOT BURNER LENS PILOT LAMP Shut off power at main breaker Remove
78. me temp terminals 9 amp 10 Measure the resistance of the thermistor probe See the chart in Section D for proper resistance readings Inspect the thermistor bulb for itsproper location in its spring holder Check for short in leads where they enter the sensor bulb Also check each thermistor lead for short toground Connect temperature meter to thermocouple at terminals 9 and 10 on back of the time temp display Be sure tomaintain proper polarity on therocouple connections Compare actual oventemperature with the reading at the time temp display If the temperature readings match re calibrate or replace time temp Impinger II 1100 Series Service Manual International Power Supply Temp Display inaccurate erratic orinoperative S N 2011821 amp Time Display Above See Pg 45 inaccurate erratic orinoperative Optical Encoder Impinger II 1100 Series Service Manual International display If the readings do not match replace thermocouple probe If 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 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 pro
79. ments and use an accurate digital VOM The element resistance should be as follows 200 24 5 ohms approximately The mercury contactor has probably malfunctioned in the closed position If there is no voltage to the operating coil but there is high voltage at the contactor output replace the mercury contactor The main fan motor is equipped with internal thermal protection and will cease to operate if overheating occurs If the motor overheats and then cools this will cause the oven 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 REFER TO PAGE 31 REFER TO PAGE 45 REFER TO PAGE 32 REFER TO PAGE 45 REFER TO PAGE 33 S N 2011383 and above Temp Display out or inaccurate S N 2011383 and above STEPPER MOTOR DRIVE Conveyor will not run WITH POWER OFF REFER TO PAGE 45 REFER TO PAGE 33 REFER TO PAGE 45 Conveyor Switch Check for 120 VAC to conveyor switch If no voltage is present trace wiring back to the oven power source Check conti nuity between switch terminals Conveyor Fuse 3AMP Check replace if necessary Not used on Model 1151 Fuseholder Check replace if necessary Conveyor Control Check for 120 VAC supply to primary Stepper Transformer oftransformer if voltage is not Speed Adjustment Potentiometer Conveyor Motor Stepper Con
80. move the plastic cover 2 screws exposing the pressure controller adjustment dial and adjust as follows NATURAL GAS LP GAS GAS PRESSURE CONTROLLER DIAL SETTINGS 8 8 23 4 5 Install a test manometer in the gas line between the gas valve and burner orifice The test plug is located in the gas line just below and on the burner side of the solenoid valve The output manifold pressure adjustment is made with a slotted screw located under a swivel cover marked DRUCKREGLER The following chart is provided for manifold pressure adjustment However always refer to the Oven Identification Plate to be sure the proper type of gas and pressure for that specific oven are being used Impinger II 1100 Series Service Manual International 67 TYPE OF GAS INCHES of CENTIMETERS of kPa Mbar WATER WATER COLUMN COLUMN NATURAL GAS 3 5 WC 8 9 cm WC 87kPa 8 70Mbar L P GAS 10 WG 25 4 cm WC 2 48kPa 24 8Mbar CITYTOWN GAS 1 4 WC 3 56 cm WC 35kPa 3 5Mbar AIR PRESSURE SWITCH BURNER OR OVEN CAVITY nNogiRON 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 TO
81. nch 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 Ifa new tach generator is installed the D C motor control board MUST BERECALIBRATED There is no repair procedure for the tach If defective replace Impinger 11 1100 Series Service Manual International 57 D C MOTOR CONTROL BOARD FI 4 FUSE RESISTOR 4 FUSE 1 A FUSE RESISTOR L1 A A L1 En N i m zs C ps elles s e All CAPACITOR MIN MAX S3 54 T1 T2 Q MAX MIN IR CL TACH T1 T2 MAX MIN T2 BOARD P N 369155 BOARD P N 369155 STYLE 1 STYLE 2 3 Three different styles of control boards have been used and allthree are still usable OND OR OO N st DON E DEN 10 11 All three were supplied under the same part number TO REPLAGE 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 Install new control board and bracket Attach wires to their proper terminals refer to th
82. ncoder refer to OPTICAL ENCODER in this section for adjustment NOTE The thin slotted encoder disc must be handled with care so not to bend it Recheck tightness on the set screws to be sure they are tight If available LOC TITE the removable kind should be used to secure set screws OPTICAL ENCODER ASSEMBLY N NO BD 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 readout may be observed to check proper adjustment of the optical encoder assembly GENERATOR ODD BON ES 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 wre
83. nt 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 oven Install in reverse order NOTE Be sure that the spring holder is holding the sensor bulb firmly If the sensor is not X held firmly compress the wire form slightly to increase pressure Ore PE S gt To test the thermistor probe refer to the following chart and instructions 3004 325 350 400 425 450 500 550 OHMS 182 138 48 16 Place test pyrometer thermocouple and preheat oven as specified under temperature calibration on Page D15 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 F 260 C should be 24 ohms SWITCH DISPLAY SET 1 Shut off power at main breaker 62 Impinger II 1100 Series Service Manual International gt 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 PROCEDURE FOR USE OF TIME TEMP SIMULATOR NOTE For displays with Thermocouple simulator will not work This is a test device used t
84. o check the Time Temp Display Procedure for use Check incoming power to display at following terminals Terminal 1 to 3 should have approximately 12 5 to 15 VAC Terminal 2 to 1 should be 1 2 of the reading from 1 to 3 Terminal 2 to 3 should also be 1 2 of the reading from 1 to 3 Identify Display type Type 1 has 6 dip switches and display case is 5 1 8 wide 12 8cm Type 2 has 6 dip switches and display case is 5 5 8 wide 14 cm Type 3 has 10 dip switches Set Dip Switches as follows 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 1 1 2 SPEED TEMPERATURE 1 9 30 10 SEC 475 10 2 9 20 10 SEC 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 10 F TYPE 2 10 10 10 SEC 475 10 F 3 10 20 10 SEC 475 10 F For performance test turn time pot to 10 00 and temp adjustment pot to 540 10 F Time reading on display of 10 00 should not fluctuate more than 5 seconds Temperature on display reading should not fluctuate SWITCH ON OFF
85. opens shorts or grounds Check for 120 VAC at terminal 2 to neutral while oven is on Turn off the main fan switch 120 VAC should continue to be present for 20 minutes If voltage is not present for approx 20 minutes replace the timer 37 Main fan runs after 20 minute cool down No control box cooling to Oven Fan Will Not Run No automatic control Fan Control box cooling fan continues to run Oven will not heat 38 Oven Start Relay 20 Minute Time Delay Oven Fan Relay 20 Minute Time Delay Oven Start Relay Cooling Fan Motor s Thermostat Cooling Cooling Fan Motor s Thermostat Cooling Fan Main Fan Motor Heat Switch both terminals to neutral Air Pressure Switch Fuse 3 Amp Fuseholder Temperature Control Thermocouple Probe Contacts should open when main fan switch is turned off 120 VAC at terminal 2 should discontinue approxi mately 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 mins replace the timer Check to insure that the contacts are opening after the coil is de energized 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 Check for main fan operation If not operating refer Check relay contacts 120 VAC should be presen
86. orm 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 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 slightly to hold sensor bulb in place Reconnect RED lead to terminal 7 and WHITE lead to terminal 6 Replace conveyor and fingers Beg mm e THERMOCOUPLE MEASUREMENT CHART EXPLANATION The junction temperature is the ambient air temperature where the thermocouple fastens to the electronic temperature control board P 200 F m Pa 400 pm 18 550 600 F Ser 332 12 51 1405 1559 s r 337 488 641 717 794 949 1026 1103 1257 1411 156 82 349 500 655 729 806 9 60 1037 1269 1423 1576 80 F _ 3 55 5 06 6 59 17 35 8 12 9 66 1043 1120 12 74 1428 15 82 78 F 3 60 1250 1434 1546 76 F 366 1286 1440 15594 BE Po 1289 1443 1557 74 F 372 523 676 7 52 8 29 9 83 10 60 1137 1292 14 46 15 99 70 3 83 534 687 765 840 995 1072 1149 113 03 14 57 16 11 GF 389 540 69
87. osition and check for 120 VAC at the load terminal number 9 and neutral number 10 If 120 VAC is present and unit is not heating refer to Solenoid Valve for next check If 120 VAC is not present proceed with next step With power on and thermocouple leads attached to board measure the millivolt output of these leads Refer to the thermocouple chart in Section D for proper readings WITH POWER OFF Remove the potentiometer leads from the temperature control board and measure ohms from black to whiteleads The reading should be from approximately 0 to 2 5K ohms as the dial of the potentiometer is turned through its full rotation From black to red leads the reading should be approx 2 5K ohms and remain steady throughout the full rotation of the potentiometer If the thermocouple probe and the control potentiometer check good Intermittent heating Conveyor will not run S N 2011821 amp Above Refer to Page 45 30 Temperature Control Valve Thermal Overload Of Main Fan and Burner Blower Motors 3 Amp Fuse Fuseholder Fan Switch Conveyor Switch Speed Adjustment Potentiometer DC Motor Control Board then the problem is usually with thetemperature control board If 120 VAC is present on the temperature control board at load terminal to neutral check for voltageat Tempera ture Control valve If voltage is present listen for valve to open and close Also check for opens or shorts in the coi
88. place but the display shows the Hall Effect Sensor may be defective or improperly connected Check all connections for tightness or proper location and check all wiring for visible damage Replace as needed If there is still no time display and all the above have checked out replace the stepper control Impinger II 1100 Series Service Manual International REMOVAL INSTALLATION AND ADJUSTMENT IMPINGER II CONVEYOR OVEN MOTOR MAIN FAN 1 Shut off power at main breaker 2 Disconnect motor wiring of main fan motor note wire colors for reassembly and remove entire oven back from the oven Refer to main fan See Below for removal information 3 Remove the main fan 4 Remove 4 screws from the motor support assembly 5 Remove the motor mounting clamp and pull the motor away from the oven back assembly 6 Remove motor mounting fixture 7 Install the motor in reverse order insuring that the motor shaft is centered in the 8 Shafttube of the oven back CAPACITOR MOTOR Model 1100 1106 Capacitor is located under motor cover in rear of unit and held in place by a plastic wire tie 1 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 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 en
89. plug burner blower motor This plug has built in locking clips on 2 sides ofthe 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 OOO IO gt gt BURNER ALARM REPLACEMENT 1 Remove control compartment covers 2 Remove two 2 wires from alarm note wire numbers and location 3 Remove retainer cover from alarm and remove assembly from mounting bracket 4 Reassemble in reverse order and check Impinger II 1100 Series Service Manual International 69 GENERAL 1100 SERIES LETTER P N DESCRIPTION A 369390 4 Caster w Mounting Plate B 369502 Bottom Finger Cover C Columnating Plate See Install Operations Manual D Bottom Finger Housing 369505 S N 2018676 amp Below 370010 S N 2018677 amp Above E 369504 Top Finger Housing F Columnating Plate See Install Operations Manual G 369503 Top Finger Cover H 369669 Front Panel Label with set button 369907 Front Panel Label without set button J 369511 Oven Top K 369659 Conveyor Hole Cover L 369228 Conveyor Hole Cover M 369227 Catch Spring N 369
90. r Assembly Switch Display Set Potentiometer Conveyor Potentiometer Conveyor Lamp Pilot Potentiometer Temperature Display Time Temp Time Delay 20 Minute Transformer Step Down 120 VAC Relay Temperature Control Control Conveyor Terminal Block Relay Stepper Control Transformer Stepper Control Drain Assembly Thermistor Probe 2 Yellow Leads Thermocouple 1 Red 1 White Lead Impinger II 1100 Series Service Manual International CONTROL COMPARTMENT FRONT 1152 1158 BLOW UP CONTROL COMPARTMENT REAR MODELS 1100 1106 MODELS 1130 1136 1150 1151 S N 2011383 AND BELOW MODELS 1160 1163 S N 2011978 AND BELOW LETTER P N DESCRIPTION A 369628 Set Screw B 369190 Drive Coupling Complete C 369512 Rubber Sleeve D 369269 Ball Plunger E Gear Motor Assembly Refer to Page 116 for Exploded View F 369137 Circuit Breaker 0 2 Amp G 369192 Capacitor 7 5 MFD H 369200 Relay l 369185 Terminal Block For 1 Phase Models 3 Required 369187 For 3 Phase Models 4 Required J 369186 Terminal Block End For 1 Phase Models 369188 For 3 Phase Models K 369120 Contactor 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 1130 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 369583 Thermostat High Limit For Model 1
91. r 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 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 Og SOL Boo FO Turn off power Remove conveyor 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 1 2 3 4 5 6 B 1 2 3 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 EARING CONVEYOR Remove conveyor from oven and place on a flat work surface Remove connecting links from conveyor belting See Installation and Operating Instructions m
92. rew 6 32 x 1 4 J 369156 6 Lock Washer K 369293 Screw 4 40 x 3 8 L NLA Tach Generator Replace with 370216 M 369298 Dust Cover N 369299 Bushing O 350247 Screw 10 32 x 3 8 P 369295 10 Lock Washer Q 369603 Stepper Motor Gearbox Assembly Includes R S T R 369737 Hall Effect Sensor 369658 Screw 8 32 x 1 4 T 369736 Magnet 2 Pole 86 Impinger II 1100 Series Service Manual International GEARMOTOR ASSEMBLY 1100 SERIES BLOW UP A 188W3SSV HOLOWHVZO Hd3dd3lS CNY 1332VH8 HOVL YOLVYANAD HOVL ATSNISSV HOLONHVID ID A l 87 Impinger II 1100 Series Service Manual International CONVEYOR DOOR 1100 SERIES LETTER P N 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 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
93. rmer Control Thermostat High Limit Oven Cavity Switch Main Fan Relay Oven Start 20 Minute Time Delay Main Fan Relay Main Fan Motor Capacitor No main fan cool down 20 Minute Time Delay Impinger II 1100 Series Service Manual International Incoming Power Supply EVALUATION Check circuit breakers Reset if required Call Power Co if needed Check replace if necessary Check replace if necessary Check replace if necessary Check replace if necessary 120 VAC 10 should be present at secondary of transformer If proper voltage is not present check transformer primary for proper input Replace as needed Terminals are normally closed If open reset the thermostat and test for propeoperation If it will not reset and hold replace thermostat Check for continuity between switch terminals Check for continuity at relay coil and visually check for pull in of contacts Check for 120 VAC at terminals 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 ispresent and oven start relay is closed replace Time Delay Check continuity to 120 VAC coil Check for power to relay coil 120 VAC Check for 220 240 VAC to relay terminals Check for opens shorts or grounds WITH POWER OFF Turn fan blade to check for locked rotor Check for
94. s it drives both the reducergear box and the Tach Generator The tach generatoris 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 Display Transformer is supplied to terminals 1 2 of the Time Temp Display The secondary output of the Trans former 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 REFER TO PAGE B15 AUTOMATIC COOL DOWN cemented to tach coupling to break the infra red light beam of the optical encoder mounted on gear motor producingelectri cal pulses that are transmitted to the display The display con verts these pulses into a read out of minutes and seconds The temperature portion of the Time Temp Display uses a Ther mistor Probe to sense oven temperature The thermistor outputs a resistance proportional to the oven temperature This resis tance is then converted by the display into a temperature reading 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 opera tion of the Main Fan Motor and the cooling fans Impinger II 1100 Seri
95. t 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 Check the cooling fan thermostat box cooling Thermostat closes at 120 F and opens at 100 F With the cooling fan thermostat pre heated check for continuity If switch is open replace 120 VAC should be present at the fan motor If voltage is present check foropens or shorts WITH POWER OFF Check for locked rotor of the fan motor This normally open thermostat should close at 120 F 48 9 C and reopen at 100 F 37 8 C Check for main fan operation If it is not operating refer to Oven fan will not run With switch on check for 120 VAC on Replace if defective This normally open switch should close when the main fan is activated Adjust if necessary Refer to Section D Replace if defective Check replace if necessary Check replace if necessary 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 49 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 WITH POWER ON AND THERMOCOUPLE LEADS ATTACHED TO THE TEMPERATURE CONTROL BOARD measure D C Impinger Il
96. tire 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 blade 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 lu c MADE FROM CONE TO FAN SPIDER FAN HUB 1 1 2 INCH Impinger II 1100 Series Service Manual International 47 RELAY DPST DV Oo TE 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 POLO IEEE Shut off power at main breaker Remove conveyor Remove front control compartment cover Unplug all wires and mark for replac
97. tor does not run replace motor Check for proper supply voltage switching from N C to N O as air pressure switch closes If above fails connect a temporary jumper wire FOR TESTING ONLY from terminal to terminal on ignition control bypasses air switch NOTE For Honeywell control only Check for air switch adjustment air tube blockage or misalignment and if these fail replace air pressure switch A pre purge time of 30 to 60 seconds occurs after blower motor starts check for supply voltage atspark generator If voltage is not present check reset button for the Ignition Control If voltage is still not present replace ignition control If voltage is present visually check for spark at ignitor head located in burner Check this assembly for visible damage If there is no damage replace the Spark Generator If there is damage replace the Ignitor Sensor Assembly Also check for frayed or damaged wires in the burner tube Gas valve should open when proper supply voltage is present If no voltage is present check the reset button on the ignition control and all connections for tightness If there is still no voltage present at gas valve replace ignition control If there is voltage present check for gas pressure at the gas pressure tap located in the gas piping just prior to the burner If there is no gas pressure replace gas valve Impinger II 1100 Series Servi
98. trol 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 secondary voltages are not present replace the transformer 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 Impinger II 1100 Series Service Manual International Tim
99. ule 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 60 Impinger II 1100 Series Service Manual International MODEL 1100 SERIES OVENS 1 2 3 4 5 6 7 8 9 10 Type 1 Off On On Off Tvpell ot On Of On O Type III Baldor Off i Off On On On Off On On Type Stepper Off dli On On Off Off On Type IV Baldor Off On On On Off On On Type IV Stepper Off On Off Off Off Stepper Motor Conveyor Speed 23 Seconds to 30 Minutes Type lll Off Off Off On On Off On Off Type IV Off Off On On Off On Of On On TIME TEMP DISPLAY FOR D C DRIVE DIP SWITCH MODULE HI 1 2 3 4 5 6 7 8 9 10 TYPE AND II HAVE ONLY 6 SWITCHES TEMP SWITCH POSITION OFF v FOR DISPLAYS WITH THERMOCOUPLE PROBE 9 10 FROM TO STEPPER TO TRANSFORMER CONTROLLER THERMISTOR PROBE RED YELLOW RED BLACK WHITE YELLOW YELLOW RED HITE a TO THERMOCOUPLE PROBE TEMPERATURE CALIBRATION 1 Set dip switches per chart on D15 2 Place a thermocouple from your test pyrometer through a hole in the center of thetop finger Tip of pyrometer D ON gt must not touch metal Set oven at 500 F 260
100. ut of Trans former 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 2011383 and above Refer to Page B15 AUTOMATIC COOL DOWN 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 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 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 the Main Fan Motor and cooling fans Impinger II 1100 Series Service Manual International MODEL 1152 MODEL 1153 MODEL 1154 MODEL 1155 MODEL 1156 MODEL 1157 MODEL 1158 POWER SUPPLY CONTROL BOX AUTO COOL DOWN MAIN FAN CIRCUIT BURNER CIRCUIT IGNITION CONTROL TEMPERATURE CONTROL Impinger II 1100 Series Service Manual International SEQUENCE OF OPERATIONS 1152 thru 1158 NAT GAS 220 VAC 50 HZ 1 PHASE G
101. voltage is present check for opens or shorts WITH POWER OFF Check for locked rotor of the fan motor Check the cooling fan thermostat box cooling Thermostat closes at 120 F and opens at 100 F With the cooling fan thermostat pre heated check for continuity If switch is open replace 120 VAC should 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 This normally open thermostat should close at 120 F 48 9 C and reopen at 100 F 37 8 C Check for main fan operation If it is not operating refer to Oven fan will not run With switch on check for 120 VAC on both terminals to neutral Replace if defective This normally open switch should close when the main fan is activated Adjust if necessary Refer to Section D Replace if defective Check for 120 VAC supply at terminal 11 to neutral on temperature control 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 WITH POWER ON AND THERMOCOUPLE LEADS ATTACHED TO THE TEMPERATURE CONTROL BOARD measure D C millivolt output of these leads Refer to thermocouple chart in Section D for proper readings If these readings are not achieved replace thermocouple WI
102. zed Closing the Heater Switch supplies 120 VAC through the normally open Air Pressure Switch which was closed by Main Fan Air Pressure 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 Closing the Conveyor Switch supplies 120 VAC to the DC Motor Control Board 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 Thespeed of the conveyor motor will increase or decrease as the DC voltage from the board in creases or decreases respectively As the motor turns it drives both the reducergear box and the Tach Generator The tach generatoris a DC voltage generator which supplies a voltage to the DC Motor Control Board and is used as a reference formaintaining a constant conveyor speed The secondary output of the Display Transformer is supplied to terminals 1 2 and 3 of the Time Temp Display The secondary outp

Lincoln Impinger Conveyor Ovens 1100 Series User's Manual

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