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Lincoln Foodservice 1633-000-EA Service Manual

Impinger conveyor ovens with push button controls
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SERVICE MANUAL
(INTERNATIONAL)
IMPINGER CONVEYOR OVENS
MODEL 1633-000-EA, 1634-000-EA
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
1600ExpDigAdv
REV: 12/13/07

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Summary of Contents for Lincoln Foodservice 1633-000-EA

  • Page 1 SERVICE MANUAL (INTERNATIONAL) IMPINGER CONVEYOR OVENS MODEL 1633-000-EA, 1634-000-EA 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...
  • Page 2 SEQUENCE OF OPERATIONS SERIAL NUMBERS L28563 AND ABOVE (WITH PUSH BUTTON CONTROL) MODEL 1633-000-EA 230 VAC 50HZ NATURAL GAS MODEL 1634-000-EA 230 VAC 50HZ LP GAS POWER SUPPLY Electrical power to be supplied to the oven by a three conductor service.
  • Page 3 SCHEMATIC MODELS 1633-000-EA AND 1634-000-EA SERIAL NUMBER L28563 TO L31478 Low Profile –1600 Series Advantage Digital Service Manual -–Int’l...
  • Page 4 SCHEMATIC MODELS 1633-00-EA AND 1634-000-EA SERIAL NUMBER L31479 AND ABOVE Low Profile –1600 Series Advantage Digital Service Manual – Int’l...

  • Page 5: Troubleshooting Guide

    TROUBLESHOOTING GUIDE MODEL 1633-000 EA NATURAL GAS 230 VAC 50 HZ 1 PHASE MODEL 1634-000-EA LP GAS 230 VAC 50 HZ 1 PHASE NOTE: When checking components on left side of unit, be sure to check for proper connections in power connector, (marked P.
  • Page 6 Gas pressure switch (internal to Check for supply voltage to neutral on both sides of gas valve) switch. If voltage is present on one side of switch only, check the following. Check for proper gas pressure supply to gas valve.(Marked on oven spec. plate.) Check for proper adjustment of gas pressure switch, should be set at 10 for Nat., 27 for LP, or 4.5 for town gas.
  • Page 7 Flame will not stay Flame sensor To check for flame sensor operation, connect a digital multimeter (capable of measuring D.C. micro amps) in series with the flame sensor wire and ignition control. Sensor current is 3 micro amps D.C. minimum. NOTE: The D.C.
  • Page 8 Igniter/sensor assembly Check this assembly for visible damage. Replace as needed. If there is no visible damage, check for voltage supply to igniter/sensor assembly. If there is voltage supplied to the igniter/sensor, but there is no spark, replace the igniter/sensor assembly. Gas valve Gas valve should open as the ignition control generates the high voltage spark.
  • Page 9 Oven control Check for 24VAC supply to control. If no voltage is present, trace wiring back to control transformer. If 24VAC is present, check for a read-out on the control display. If there is 24VAC supplied, but there is no read-out on the control display, replace the oven control.
  • Page 10 Intermittent heating Thermal overload of main fan The main fan motors and the burner blower motors and burner blower motors are equipped with internal thermal protection and will cease to operate if overheating occurs. As the motors overheat and then cool, this will cause the units to cycle on and off intermittently.
  • Page 11 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 at the motor connector. Frequency readings should be approx. 25 – 100 Hz. If these readings are not achieved, replace the conveyor motor.

  • Page 12: Removal, Installation & Adjustments

    REMOVAL, INSTALLATION & ADJUSTMENTS MODEL SERIES 1633-000-EA, 1634-000-EA SERIAL NUMBER L28563 AND ABOVE OVEN WITH PUSH BUTTON CONTROLS CAUTION! BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE IMPINGER OVEN BE SURE TO DISCONNECT ELECTRICAL POWER AND GAS SUPPLY. IGNITION CONTROL – REPLACEMENT (S/N L31478 and Below) A.
  • Page 13 CAPACITOR, CONVEYOR MOTOR – REPLACEMENT Shut off power at main breaker. Remove control box cover and front panel. Discharge capacitor before removing wires. Mark wires for reassembly. Remove mounting screw and remove capacitor. Reassemble in reverse order. REVERSING SWITCH – REPLACEMENT Shut off power at main breaker.
  • Page 14 BURNER ALARM - REPLACEMENT A. Remove appropriate control box cover. B. Remove 2 wires from alarm, note wire numbers and location. C. Remove retainer cover from alarm and remove assembly from control box. D. Reassemble in reverse order and check system operation. SPARK GENERATOR –...
  • Page 15 THERMOSTAT, HIGH LIMIT, OVEN CAVITY – REPLACEMENT Remove appropriate control box cover. Remove motor cover and remove oven back to access high limit thermostat. Remove wires from thermostat, note wire numbers for reinstallation. Remove mounting nut from high limit thermostat and remove high limit from oven. Reassemble in reverse order.
  • Page 16 D. Unplug thermocouple. E. Unplug 2 motor connectors. F. Remove 8 bolts from oven back ( 4 left, 4 right ) and lift out. G. Remove 1 screw from fan hub and slide fan blade off of motor shaft. ( note location of fan blade for reinstallation ) H.
  • Page 17 OVEN CONTROL – REPLACEMENT Shut off power at main breaker. Remove control box cover and front panel. Remove all wiring connections and mark for reassembly. Remove oven control by pulling control from mounting pins. Remove control from oven. Before installing new control, set voltage jumper (located at the bottom center of the oven control) to the proper (120/240V) position.
  • Page 18 GENERAL ADVANTAGE SERIES LETTER PART # DESCRIPTION 369110 Access window assembly 369929 Window retainer 369926 Window frame bottom 369925 Glass, access window 369927 Window frame, top 369930 Screw, 10-32x1/4 369211 Thumb screw 369058 Baffle 370253 Drive cover, L.H. 1609 Oven top 370252 Drive cover, R.H.
  • Page 19 Low Profile –1600 Series Advantage Digital Service Manual -–Int’l...
  • Page 20 CONTROL BOX, RIGHT 1633-000-EA, 1634-000-EA LETTER PART # DESCRIPTION 369158 Sprocket, 10 Tooth 370357 Thermocouple, Type K 369757 Main Orifice, Nat. 369758 Main Orifice, LP 370186 Solenoid Valve 369590 Igniter/ Sensor Assembly (S/N L31478 & below) 370397 Igniter/ Sensor Assembly (S/N L31479 & above) 369937 Venturi, Nat.
  • Page 21 Low Profile –1600 Series Advantage Digital Service Manual -–Int’l...
  • Page 22 CONTROL BOX, LEFT 1633-000-EA, 1634-000-EA LETTER PART# DESCRIPTION 370358 Thermocouple with extension 369507 Thermostat, cooling fan 369431 Thermostat, control box hi-limit 369573 Ignition control, (S/N L31478 & below) 370401 Ignition control, (S/N L31479 & above) 369771 Reset switch, ignition control...
  • Page 23 Low Profile –1600 Series Advantage Digital Service Manual -–Int’l...
  • Page 24 OVEN BACK 1633-000-EA, 1634-000-EA LETTER PART# DESCRIPTION 369547 Wire form thermostat bulb 369725 Fan, clockwise rotation 369776 Fan shroud 369777 Stand-off 369778 Rear wall assy. 369761 Motor mount 369759 Motor, main fan 220/240V 50 Hz. 1627 Duct cap 369033 Motor clamp...
  • Page 25 Low Profile –1600 Series Advantage Digital Service Manual -–Int’l...
  • Page 26 CONVEYOR 1633-000-EA, 1634-000-EA LETTER PART# DESCRIPTION 369830 Complete conveyor 369816 Conveyor belt, complete (30 inch wide belt) 369163 Conveyor belt, complete (32 inch wide belt) 370092 Belt, 1ft. section (30 inch wide belt) 369362 Belt, 1ft. section (32 inch wide belt)
  • Page 27 Low Profile –1600 Series Advantage Digital Service Manual -–Int’l...
  • Page 28 Low Profile –1600 Series Advantage Digital Service Manual – Int’l...

This manual is also suitable for:

1634-000-ea