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SERVICE MANUAL
(INTERNATIONAL)
IMPINGER CONVEYOR OVENS
MODEL 1433-000-E, 1434-000-E,
1456, 1457
WITH PUSH BUTTON CONTROLS
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
1450digexport REV 1/5/07
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SEQUENCE OF OPERATION IMPINGER ADVANTAGE SERIAL NUMBER N28654 AND ABOVE (OVENS WITH PUSH BUTTON CONTROLS) MODEL 1433-000-E 230VAC 50 HZ. NAT. GAS MODEL 1434-000-E 230VAC 50 HZ. LP GAS MODEL 1456 220/240VAC 50 HZ. NAT. GAS MODEL 1457 220/240VAC 50 HZ. LP GAS POWER SUPPLY Electrical power is to be supplied to the oven by a three conductor service. Brown conductor is hot. Blue conductor is neutral. Green conductor is ground. CONTROL BOX AUTO When the temperatur
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SCHEMATIC DIAGRAM MODEL 1433-000-E, 1434-000-E SERIAL NUMBER N28654 TO N31348 Impinger I – Adv Digital – Gas Service Manual – International 3
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SCHEMATIC DIAGRAM MODEL 1456, 1457 SERIAL NUMBER N28654 TO N31348 4 Impinger I – Adv Digital – Gas Service Manual – International
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SCHEMATIC DIAGRAM MODEL 1433-000-E, 1434-000-E, 1456, 1457 SERIAL NUMBER N31349 AND ABOVE Impinger I – Adv Digital – Gas Service Manual – International 5
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TROUBLESHOOTING GUIDE IMPINGER ADVANTAGE GAS OVENS SERIAL NUMBER N28654 AND ABOVE (OVENS WITH PUSH BUTTON CONTROLS) SYMPTOM POSSIBLE CAUSE EVALUATION Oven fan will not run Incoming power supply Check circuit breaker, reset if required. Check power plug to be sure it is firmly in receptacle. Measure incoming power, call power co. if required. Fuse, 10 Amp Check, replace if necessary. Fuse holder Check, replace if necessary. Switch, oven power Check for line voltage supplied to swi
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WITH POWER OFF: Remove 3 prong plug (on gas valve) and measure continuity between terminals 2 and 3. 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 the gas pressure switch, 10 for Nat. gas, 27 for LP gas or 4.5 for town gas. Check the filter in the gas valve for blockage or damage. If above checks are okay, but pressure switch is still not closed, replace gas valve. Ignition contr
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not stay on, check the reset button for the ignition control. If the above check okay, replace ignition control. Oven will not heat Main fan If not operating, refer to “Oven fan will not run” S/N N31349 and Above Gas supply Check for adequate gas supply and be sure that the manual gas shut off valve is open. Also check flexible gas line connection.. Air pressure switch Check air switch terminals for supply voltage to terminals COM and NO. If voltage is present on one side only, check
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there is voltage to the pilot valve, but there is no gas pressure, replace gas valve. Pilot tube Check for gas pressure at pilot tube. Disconnect pilot tube at burner and connect manometer. If there is no gas pressure, check for blockage in pilot tube. Repair or replace as needed. Pilot orifice If there is gas pressure at the pilot tube, check the pilot orifice for damage or obstructions. Replace pilot orifice as needed. Flame will not stay on Flame sensor To check flame sensor operat
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Oven control If the thermocouple checks good, but the oven control display indicates that there is a thermocouple failure, replace the oven control. If the oven control indicates a temperature reading, but the oven will not heat, proceed. Thermocouple WITH POWER ON AND THERMOCOUPLE ATTACHED TO THE OVEN CONTROL: Measure the DC millivolt output of the thermocouple. Refer to the thermocouple chart (located in the “Removal” section of the manual) for proper millivolt readings. If these rea
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sensor (sensor is located in the conveyor motor). Measure voltage at the motor connector, red wire and yellow wire. Voltage should be approx. 10VDC. If no voltage is present, trace wiring back to oven control. If there is no voltage output at the oven control, replace oven control. Conveyor motor If there is voltage supplied to the hall effect sensor, check for a frequency output from the hall effect sensor. Measure frequency across the yellow and white wires in the motor connector.
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REMOVAL, INSTALLATION & ADJUSTMENTS IMPINGER ADVANTAGE SERIES CAUTION! BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE IMPINGER OVEN BE SURE TO DISCONNECT ELECTRICAL POWER AND GAS SUPPLY MOTOR, MAIN FAN - REPLACEMENT 1. Shut off power at main breaker. 2. Remove louvered motor cover from back of oven. 3. Remove wireway by taking out the (5) five hex screws. 4. Disconnect wiring from motor. 5. Remove the twelve (12) hex head bolts from the oven back and slide back straight o
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THERMOSTAT, COOLING FAN - REPLACEMENT 1. Shut off power at main breaker. 2. Remove control panel top and front cover. 3. Remove lead wires and mark for reassembly. 4. Remove two (2) screws and remove thermostat. 5. Reassemble in reverse order. BURNER BLOWER MOTOR - REPLACEMENT 1. Shut off power at main breaker. 2. Remove control panel top and front cover. 3. Unplug motor connector. 4. Remove three (3) screws from blower tube at burner housing. 5. Remove air shutter assembly fr
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8. Remove burner assembly from housing, the main and pilot orifice, flame target, pilot shield (main and extension), burner ignitor can now be changed or serviced as needed. 9. Reassemble in reverse order. Check all gas line fittings for leaks. GAS CONTROL VALVE – REPLACEMENT (S/N N31348 and Below) 1. Shut off power at main breaker. 2. Shut off gas supply. 3. Remove control panel top and front cover. 4. Remove the four screws from the incoming nipple mounting bracket and remove pip
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THERMOSTAT, OVEN CAVITY HI-LIMIT – REPLACEMENT 1. Shut off power at main breaker. 2. Remove control box cover and front panel. Remove conveyor assembly and fingers from oven to aid in removal of thermostat from oven. 3. Disconnect wires from thermostat and mark for reassembly. 4. Remove thermostat from oven. 5. Reassemble in reverse order and check system operation. BURNER IGNITOR - REPLACEMENT 1. Shut off power at main breaker. 2. Remove c
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THERMOCOUPLE MEASURMENT TEMPERATURE D.C. MILLVOLTS (APPROX.) 200 ° 2.8 250 ° 4.0 300 ° 5.1 350 ° 6.0 400 ° 7.1 450 ° 8.2 500 ° 9.3 550 ° 10.4 600 ° 11.5 CONTROL TRANSFORMER - REPLACEMENT 1. Shut power off at main breaker. 2. Remove control panel top and front cover. 3. Remove two (2) wires on primary side, note color and location. 4. Remove two (2) wires on secondary side, note color and location. 5. Remove two (2) screws from transformer b
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6. Remove assembly and replace main orifice. 7. Reassemble in reverse order and check system operation. NOTE: Check all gas line fittings for leaks. PILOT ORIFICE - REPLACEMENT 1. Shut off power at main breaker. 2. Shut off gas supply. 3. Remove burner assembly (See "Burner Assembly"). 4. Remove pilot line from pilot orifice. 5. Remove pilot orifice from burner ignitor. 6. Reassemble in reverse order. NOTE: Check all gas line fittings for leaks. ON-OFF SWITCH - REPLACEMENT 1
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GENERAL VIEW ADVANTAGE SERIES LETTER PART NUMBER DESCRIPTION A 369003 Door hinge B 369110 Access window assembly C 369337 Retainer (old style) 369929 Retainer (new style) D 369828 Handle spacer E 369209 Latch & strike F 369310 Screw, 6-32 x 3/16” G 369308 Bottom, access window H 369334 Access door glass J 369309 Top, access window K 350638 Handle L 369311 Handle spacer (2 req.) M 369336 Door latch N 369906 Screw, 8-32 x 5/8” O 370110 Door assembly (solid) P 369157 Door asse
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CONTROL BOX 1456,1457,1433-000-E, 1434-000-E LETTER PART # DESCRIPTION A 369062 Top, Control Panel B 370355 Oven Control C 370363 Front Cover Assembly D 370354 Facia, Label E 369432 Switch, On/Off F 369580 Gas Valve, Multi Block (S/N N31348 & Below) 370433 Gas Valve (S/N N31349 & Above) G 369570 Connector, 3 Pole H 369571 Connector, 4 Pole I 370186 Solenoid Valve J 369072 Main Orifice, Nat. 369099 Main Orifice, LP 370114 Main Orifice, Town Gas K 369144 Pilot Shield Exten
