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SERVICE MANUAL
(DOMESTIC & INTERNATIONAL)
IMPINGER X2 OVENS
WITH ANALOG CONTROLS
MODEL
3240-2, 3262-2, 3270-2
Lincoln Foodservice Products, LLC
1111 North Hadley Road
Fort Wayne, Indiana 46804
United States of America
Phone : (800) 374-3004
U.S. Fax: (888) 790-8193 • Int’l Fax: (260) 436-0735
Technical Service Hot Line
(800) 678-9511
www.lincolnfp.com
X2svcmanual REV: 1/8/07
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SEQUENCE OF OPERATION IMPINGER X2 OVENS 3240-2* 120/230VAC 60 HZ. 1 PHASE 3240-2* 120/230VAC 60 HZ. 3 PHASE 3262-2* 120/230VAC 60 HZ. 1 PHASE 3262-2* 120/230VAC 60 HZ. 3 PHASE 3270-2* 120/230VAC 60 HZ. 1 PHASE 3270-2* 120/230VAC 60 HZ. 3 PHASE *NOTE: Model number ending in TS indicates top belt is split belt Model number ending in SB indicates bottom belt is split belt Model number ending in SS indicates both belts are split belts POWER SUPPLY Electrical power to
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SEQUENCE OF OPERATION IMPINGER X2 OVENS 3240-2* 230VAC 50 HZ. 1 PHASE 3262-2* 230VAC 50 HZ. 1 PHASE 3270-2* 230VAC 50 HZ. 1 PHASE *NOTE: Model number ending in TS indicates top belt is split belt Model number ending in SB indicates bottom belt is split belt Model number ending in SS indicates both belts are split belts POWER SUPPLY Electrical power to be supplied to the oven by a three conductor service for single phase or a five conductor service for three phase. Black
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SCHEMATIC DIAGRAM MODEL 3240-2, 3262-2, 3270-2 60 HZ. 4 Impinger X2 – Analog Service Manual – Dom & Int’l
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SCHEMATIC DIAGRAM MODEL 3240-2, 3262-2, 3270-2 50 HZ. Impinger X2 – Analog Service Manual – Dom & Int’l 5
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TROUBLESHOOTING GUIDE 3240-2* 120/230VAC 60 HZ. 1 PHASE 3240-2* 120/230VAC 60 HZ. 3 PHASE 3262-2* 120/230VAC 60 HZ. 1 PHASE 3262-2* 120/230VAC 60 HZ. 3 PHASE 3270-2* 120/230VAC 60 HZ. 1 PHASE 3270-2* 120/230VAC 60 HZ. 3 PHASE *NOTE: Model number ending in TS indicates top belt is split belt Model number ending in SB indicates bottom belt is split belt Model number ending in SS indicates both belts are split belts SYMPTOM POSSIBLE CAUSE EVALUATION Oven fan
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bearings. Replace bearings as needed. Oven will not heat Gas supply Check for adequate gas supply to oven. Manual gas shut off valve Check to see that the manual gas shut off valve is open. Also, check flexible gas line connection for any damage. Main fan motor Check for main fan operation. If it is not operating, refer to “Oven fan will not run”. Relay, main fan Check for 120VAC supplied to relay terminal #13. If voltage is not present, trace wiring back to power supply. If voltage
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wiring back to the centrifugal switch of the burner blower motor. If voltage is present, check for 24VAC at pins #3 and #2 (pilot valve). If voltage is not present, replace burner control. If the pilot valve is energized, check to see that the high voltage igniter circuit is also energized. To check, turn power off, disconnect the igniter lead from the ignition control. Turn power on. If no spark is visible, replace burner control. If a spark is visible at burner control, proceed. Pil
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Temperature regulation valve If 120VAC is present on the electronic temperature control, terminal #13 to neutral, check for voltage at temperature regulation valve. If no voltage is present, trace wiring back to electronic temperature control. If voltage is present, listen for valve to open and close. Also check for opens or shorts in the operating coil. Replace temperature regulation valve as needed. Intermittent heating Thermal/Overload of main fan The main fan motor and burner blower
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assembly. Check for damaged or torn belting. Check conveyor shaft bearings for damage or excessive wear. Repair or replace conveyor components as needed. Conveyor speed varying or Power supply Check for a steady 120VAC supply to the conveyor intermittent control. If voltage is not steady, trace back to power supply. Control, conveyor Check for a steady DC voltage output at terminals A+ and A-. If voltage is not steady, proceed. Check for 5 VDC output from the conveyor control at termin
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TROUBLESHOOTING GUIDE 3240-2* 230VAC 50 HZ. 1 PHASE 3262-2* 230VAC 50 HZ. 1 PHASE 3270-2* 230VAC 50 HZ. 1 PHASE *NOTE: Model number ending in TS indicates top belt is split belt Model number ending in SB indicates bottom belt is split belt Model number ending in SS indicates both belts are split belts SYMPTOM POSSIBLE CAUSE EVALUATION Oven fan will not run Incoming power supply Check circuit breakers. Reset if required. Call power co. if needed. Fuse, 2 Amp, c
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Oven will not heat Gas supply Check for adequate gas supply to oven. Manual gas shut off valve Check to see that the manual gas shut off valve is open. Also, check flexible gas line connection for any damage. Main fan motor Check for main fan operation. If it is not operating, refer to “Oven fan will not run”. Relay, main fan Check for supply voltage to relay terminal #13. If voltage is not present, trace wiring back to power supply. If voltage is present, check for supply voltage at
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Burner control Check for supply voltage at terminal #7 on burner control. If no voltage is present, trace wiring back to air pressure switch. If voltage is present, check for output voltage (after the 30 second delay) from terminal #8 on the burner control. If there is no output voltage from terminal #8, (after the 30 second delay) replace the burner control. If there is output voltage, proceed. Pilot valve Check for supply voltage to pilot valve. If no voltage is present, trace wirin
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On at this time control at terminals #13 and #12. Of there is no voltage, Electronic temperature trace wiring back to the burner switch. Also check for control supply voltage to terminal #20 on the electronic temperature control. If there is no voltage at terminal #20, trace wiring back to terminal #13. Set temperature control to maximum temperature and check for output voltage at terminal #21 and neutral. If voltage is present at terminal #20 and neutral, and the unit is not heating, re
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switch as needed. Control, conveyor Check for supply voltage to conveyor control at terminals #1 (AC) and #2 (AC). If no voltage is present, trace wiring back to conveyor switch. If AC voltage is present, check for DC voltage output at terminals #3 (A-) and #4 (A+). If there is AC voltage in, but no DC voltage out of the conveyor control. Replace the conveyor control. If there is D.C. voltage output, proceed. Fuse, 2 Amp Check, replace if necessary. Fuse holder Check for D.C. voltag
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REMOVAL, INSTALLATION & ADJUSTMENTS IMPINGER X2 SERIES OVENS CAUTION! BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE IMPINGER X2 OVEN BE SURE TO DISCONNECT ELECTRICAL POWER AND GAS SUPPLY MOTOR, MAIN FAN - REPLACEMENT 1. Shut off power at main breaker. 2. Remove control box cover and control box rear cover. 3. Disconnect motor wiring and mark all wiring for reassembly. 4. Remove V-belt by loosening the four bolts on the motor mount plate and the two belt tensioning bolts
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9. Remove burner tube bracket and Burner tube. To remove burner tube, Remove cap from idle end of Oven wall and remove burner tube. 10. Measure distance from end of shaft to the collar 11. of blower wheel. Loosen blower wheels from shaft. (1/4" allen screws - use liquid wrench) Push blower wheels toward idle end. 12.Loosen and remove idle and drive end bearings. 13.Remove shaft and blower wheel assembles.( measure length of shaft extension from oven wall. Use same
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RELAY, MAIN FAN, - REPLACEMENT 1. Shut off power at main breaker. 2. Remove control box cover. 3. Disconnect all wiring from relay and mark all wiring for reassembly. 4. Remove main relay and overload protector. 5. Remove overload protector from main relay and mount overload protector on new relay. 6. Reassemble in reverse order and check system for proper operation. TIMER, 30 MINUTE COOL DOWN – REPLACEMENT 1. Shut off power at main breaker. 2. Remove control box cover. 3. Disco
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4. Disconnect wiring from burner blower relay and mark all wiring for reassembly. 5. Remove two mounting screws and remove burner blower relay. 6. Reassemble in reverse order and check system operation. BURNER CONTROL – REPLACEMENT 1. Shut off power at main breaker. 2. Remove control box cover 3. Disconnect wiring from burner control and mark all wiring for reassembly. 4. Remove mounting screws and remove burner control. 5. Reassemble in reverse order and check system operation. A
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7. Press the “FUNC” key until the display reads “Cnf”. Shut off burner, remove control from the mounting base. Close the Hairpin switch on the control and replace the control in the mounting base. 8. Turn the burner on. Set oven temperature to 500°F and verify calibration. Allow oven to preheat for at least 30 minutes. Place temperature probe in the center of the oven, on the top conveyor. If the actual temperature differs from the displayed temperature more than 5°, the “offset value”
