Lincoln Electric Cool Arc 55 S Service Manual
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Lincoln Electric Cool Arc 55 S Service Manual

Lincoln Electric Cool Arc 55 S Service Manual

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Cool Arc ® 55 S Water Cooler
For use with machines having Code Numbers:
Cool Arc ® 55 S Water Cooler: 11949
SERVICE MANUAL
SVM286
| Issue D ate 18-Feb
© Lincoln Global, Inc. All Rights Reserved.

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  • Page 1 Cool Arc ® 55 S Water Cooler For use with machines having Code Numbers: Cool Arc ® 55 S Water Cooler: 11949 SERVICE MANUAL SVM286 | Issue D ate 18-Feb © Lincoln Global, Inc. All Rights Reserved.
  • Page 2 THANK YOU FOR SELECTING A QUALITY PRODUCT BY KEEP YOUR HEAD OUT OF THE FUMES. DON’T get too close to the arc. LINCOLN ELEC TRIC. Use corrective lenses if necessary to stay a reasonable distance away from the arc. READ and obey the Safety Data PLEASE EXAMINE CARTON AND EQUIPMENT FOR Sheet (SDS) and the warning label DAMAGE IMMEDIATELY...
  • Page 3 MAGNETIC FIELDS MAY W117.2-1974. A Free copy of “Arc Welding Safety” booklet BE DANGEROUS E205 is available from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199. 2.a. Electric current flowing through any conductor BE SURE THAT ALL INSTALLATION, OPERATION, causes localized Electric and Magnetic Fields (EMF).
  • Page 4 S FETY ELECTRIC SHOCK ARC RAYS CAN BURN. CAN KILL. 3.a. The electrode and work (or ground) circuits are 4.a. Use a shield with the proper filter and cover plates to protect your electrically “hot” when the welder is on. Do eyes from sparks and the rays of the arc when welding or not touch these “hot”...
  • Page 5 S FETY WELDING AND CUTTING CYLINDER MAY EXPLODE IF SPARKS CAN CAUSE DAMAGED. FIRE OR EXPLOSION. 7.a. Use only compressed gas cylinders containing the correct shielding gas for the process used 6.a. Remove fire hazards from the welding area. If and properly operating regulators designed for this is not possible, cover them to prevent the welding sparks the gas and pressure used.

  • Page 6: Table Of Contents

    PC BOARD TROUBLESHOOTING PROCEDURES ....................4 Troubleshooting guide ............................5 USING THE STATUS LED TO TROUBLESHOOT SYSTEM PROBLEMS ..............7 ERROR CODES FOR THE COOL ARC 55 S ......................8 Test Procedures ..............................9 CASE COVER REMOVAL AND REPLACEMENT PROCEDURE................9 12 VDC RELAY TEST PROCEDURE ........................
  • Page 7 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual...

  • Page 8: Troubleshooting & Repair

    Troubleshooting & Repair HOW TO USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please observe all safety notes and precautions detailed throughout this manual.

  • Page 9: Pc Board Troubleshooting Procedures

    ELECTRIC SHOCK can kill. remove them until installation is complete. • If you return a PC board to The Lincoln Electric Company • Have an electrician install and service this for credit, it must be in the static-shielding bag. This will equipment.

  • Page 10: Troubleshooting Guide

    42V & ArcLink feeder board may be faulty. If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 11 4. Check for coolant leaks. If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.

  • Page 12: Using The Status Led To Troubleshoot System Problems

    USING THE STATUS LED TO TROUBLESHOOT SYSTEM PROBLEMS The Cool Arc 55 S is equipped with a status light. If a problem occurs it is important to note the condition of the status lights. Therefore, prior to cycling power to the system, check the power source status light for error sequences in Table F.1.

  • Page 13: Error Codes For The Cool Arc 55 S

    LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual ERROR CODES FOR THE COOL ARC 55 S The following is a partial list of possible error codes for the Cool Arc 55 S. ERROR CODE # INDICATION The flow sensor is not detecting proper flow. Check to make sure all hoses are 92 FLOW SENSOR connected and that there is enough coolant in the system.

  • Page 14: Test Procedures

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 15 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual REPLACEMENT PROCEDURE Using a 5/16” nutdriver, attach the four screws securing each side panel to the machine. Using a 5/16” nutdriver, attach the side screw to each of the four bottom corner caps.
  • Page 16 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Figure F.2 – 42V & ArcLink feeder board plug locations Figure F.3 – Case side panel mounting screw locations...

  • Page 17: Vdc Relay Test Procedure

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 18 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Table F. 2 – 12V relay resistance tests TEST POINT TEST POINT EXPECTED READING MACHINE CONDITION TERMINAL 4 TERMINAL 3 CLOSED NO POWER APPLIED TO (LOW RESISTANCE) RELAY COILS. TERMINAL 4...
  • Page 19 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Figure F.5 – 12 VDC relay lead locations...

  • Page 20: Pump Motor And Fan Test Procedure

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 21 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Figure F.6 – Pump motor assembly and fan locations Figure F.7 – Manual operation switch locations...

  • Page 22: Manual Operation Switch Test Procedure

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 23 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Table F. 3 – Manual operation switch resistance tests MANUAL OPERATION TEST POINT (POS) TEST POINT (NEG) EXPECTED READING SWITCH POSITION CLOSED TERMINAL 2 TERMINAL 1 TOGGLE UP (LOW RESISTANCE)
  • Page 24 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Figure F.9 – Manual operation switch lead locations...

  • Page 25: Removal And Replacement Procedures

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 26 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Figure F.10 – 12 VDC relay lead locations Figure F.11 – 12 VDC relay mounting hardware locations...

  • Page 27: Manual Operation Switch Removal And Replacement Procedure

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 28 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Figure F.12 – Manual operation switch lead locations Figure F.13 – Manual operation switch mounting nut location...

  • Page 29: Arclink Feeder Board Removal And Replacement Procedure

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 30 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Figure F.14 – 42V & ArcLink feeder board plug locations Figure F.15 – 42V & ArcLink feeder board mounting nut locations...

  • Page 31: Pump And Motor Assembly Removal And Replacement Procedure

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 32 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual REPLACEMENT PROCEDURE 1. Carefully position the pump and motor assembly onto the motor base. 2. Using a 1/2” open-end wrench, remove the four screws, lock washers and flat washers securing the pump and motor assembly to the motor base.
  • Page 33 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Figure F.17 – Hose clamp and hose locations Figure F.18 – Motor base mounting hardware locations...
  • Page 34 LINCOLN ELECTRIC Cool Arc® 55 S Water Cooler Service Manual Figure F.19 – Pump and motor assembly mounting screw locations...

  • Page 35: Retest After Repair

    • If you repair or replace any electrical components. PROCEDURE 1. Carefully apply 120 VAC (via the input cord) to the Cool Arc 55 S Water Cooler. 2. Connect the Cool Arc 55 S to a compatible Lincoln ArcLink power supply.

This manual is also suitable for:

11949

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