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Lincoln Electric 1621-000-EA Service Manual

Impinger conveyor ovens
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SERVICE MANUAL
(INTERNATIONAL)
IMPINGER CONVEYOR OVENS
MODEL 1621-000-EA, 1628-000-A, 1629-000-A
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
1600AdDgElecExp
REV: 1/8/07

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Summary of Contents for Lincoln Electric 1621-000-EA

  • Page 1 SERVICE MANUAL (INTERNATIONAL) IMPINGER CONVEYOR OVENS MODEL 1621-000-EA, 1628-000-A, 1629-000-A 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: Temperature Control

    The time delay relay will keep the coil of the motor relay closed, maintaining operation of main fan and cooling motors. SEQUENCE OF OPERATIONS (WITH PUSH BUTTON CONTROL) MODEL 1621-000-EA 230/400 VAC 50HZ MODEL 1628-000-A 220/380 VAC 50HZ MODEL 1629-000-A 224/415 VAC 50HZ Low Profile –...
  • Page 3 SCHEMATIC MODEL 1621-000-EA, 1628-000-A, 1629-000-A Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l...

  • Page 4: Troubleshooting Guide

    MODEL 1621-000 EA MODEL 1628-000 A MODEL 1629-000 A NOTE: When checking components on left side of unit, be sure to check for proper connections in power connector, (marked P. C. on schematic diagram) located inside motor cover. SYMPTOM POSSIBLE CAUSE Oven fan will not Incoming power supply Fuse, 10 A., main fan...
  • Page 5 Cooling fan thermostat(s) Fuse, 3 A., cooling fan Fuse holder Cooling fan(s) Oven will not heat Fan switch Main oven fan NOTE: These ovens utilize 2 complete /Temperature control systems. Each system will Follow the same troubleshooting sequence. Oven control relay Thermostat, oven cavity hi-limit Contactor, hi-limit Fuse, heater, 50A.
  • Page 6 Thermocouple probe Oven control Thermocouple Oven control Oven air pressure switch Heat relay Heating elements Check to be sure that the thermocouple is securely connected to the oven control. If the thermocouple is connected to the oven control, and the control indicates “LP FAIL”...
  • Page 7 Intermittent heating Thermal overload of main fan motor(s) Conveyor will not Power supply Power switch Fuse, 10 Amp. Fuse holder Hi-limit thermostat(s), control box Relay, oven control Control transformer Conveyor motor Capacitor, conveyor motor Switch, conveyor reversing Oven control Conveyor motor NOTE: Display will indicate runs, but there is “Belt jam”...
  • Page 8 Conveyor motor Oven control 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. 20 – 525 Hz. If these readings are not achieved, replace the conveyor motor.

  • Page 9: Removal, Installation & Adjustments

    REMOVAL, INSTALLATION & ADJUSTMENTS MODEL SERIES 1621-000-EA, 1628-000-A, 1629-000-A BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE IMPINGER OVEN BE SURE TO DISCONNECT ELECTRICAL POWER AND GAS SUPPLY. AIR PRESSURE SWITCH – REPLACEMENT A. Remove control panel top. B. Disconnect wires from switch making note of wire number and location for reinstallation.
  • Page 10 C. Remove 2 wires, note wire number and location. D. Remove locknut on backside of fuse holder and push out. E. Reinstall in reverse order and check system operation. THERMOSTAT, HIGH LIMIT, OVEN CAVITY – REPLACEMENT A. Shut off power at main breaker. B.
  • Page 11 COOLING FAN MOTOR – REPLACEMENT A. Shut off power at main breaker. B. Remove appropriate control box cover. C. Remove 4 mounting screws. D. Unplug electrical connector and remove fan motor. E. Reassemble in reverse order and check system operation. MAIN FAN MOTOR –...
  • Page 12 TIME DELAY RELAY – REPLACEMENT A. Shut off power at main breaker. B. Remove control box cover. C. Remove all wires from time delay relay, note wire numbers and location for reinstallation. D. Remove mounting screw and remove time delay relay. E.
  • Page 13 NOTES: All bake times should be within 10 seconds of set bake time, cavity temperature should be calibrated to within 5° of set temperature. For temperature calibration, allow oven temperature to stabilize at least for 30 minutes. 2 BEFORE APPLYING POWER TO OVEN, ENSURE PROPER VOLTAGE JUMPER SETTING FOR 120V or 240V, AND THE 50 HZ / 60HZ JUMPER SETTING IS CORRECT.

  • Page 14: Advantage Series

    LETTER PART # 369110 369929 369926 369925 369927 369930 369211 369058 1609 370252 369745 369723 369783 369717 369057 369501 369328 369030 369390 370167 370663** 370166 370662** 370168 370665*** 370169 370664*** 369707 369740 369718 369931 369746 ** Units from S/N 35951 and above DO NOT contain lower Air Return Baffles. These units only contain a total of two (2) Air Return baffles which are placed above the top finger assemblies.

  • Page 15: General View

    GENERAL VIEW Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l...
  • Page 16 1621-000-EA, 1628-000-A, 1629-000-A LETTER Not shown Not shown CONTROL BOX, RIGHT PART # DESCRIPTION 9004646 Control Box Front RH 369767 Firebar Element, Bottom 220V 369792 Firebar Element, Bottom 230V 369769 Firebar Element, Bottom 240V 7004973 Mounting Plate Bottom 369025 Switch, Blower Air...
  • Page 17 CONTROL BOX, RIGHT VIEW Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l...
  • Page 18 1621-000-EA, 1628-000-A, 1629-000-A LETTER Not shown CONTROL BOX, LEFT PART# DESCRIPTION 7006233 Control Box, Back LH 370250 Top Assembly LH 369378 Cooling Fan Motor 230VAC 370495 Bracket Fan RH 369766 Firebar Element, Top 220V 369793 Firebar Element, Top 230V 369768...
  • Page 19 CONTROL BOX, LEFT VIEW Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l...
  • Page 20 1621-000-EA, 1628-000-A, 1629-000-A LETTER OVEN BACK 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...
  • Page 21 OVEN BACK VIEW Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l...
  • Page 22 1621-000-EA, 1628-000-A, 1629-000-A LETTER CONVEYOR PART# DESCRIPTION 369830 Complete conveyor 369002 Knob, conveyor tension 369362 Belt, 1ft. section (32 inch wide belt) 369314 Roll, conveyor, notched 2114003 nut, hex 369812 Conveyor idler shaft 369160 Conveyor pan stop 369641 Bracket, idle bearing...
  • Page 23 CONVEYOR VIEW Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l...
  • Page 24 Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l...

This manual is also suitable for:

1629-000-a1628-000-a

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