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Lincoln Electric LN-15 WIRE FEEDER SVM166-A Service Manual

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Safety Depends on You
Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However,
your overall safety can be
increased by proper installation
. . . and thoughtful operation on
your part. DO NOT INSTALL,
OPERATE OR REPAIR THIS
EQUIPMENT WITHOUT READ-
ING THIS MANUAL AND THE
SAFETY PRECAUTIONS CON-
TAINED THROUGHOUT. And,
most importantly, think before
you act and be careful.
• Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
RETURN TO MAIN MENU
LN- 15 WIRE FEEDER
For use with machines having Code Number : 11033, 11035

SERVICE MANUAL

• World's Leader in Welding and Cutting Products •
SVM166-A
Copyright © 2006 Lincoln Global Inc.
April, 2006

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Summary of Contents for Lincoln Electric LN-15 WIRE FEEDER SVM166-A

  • Page 1: Service Manual

    LN- 15 WIRE FEEDER For use with machines having Code Number : 11033, 11035 Safety Depends on You Lincoln arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation .

  • Page 2: Safety

    Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199. BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

  • Page 3: Electric Shock Can Kill

    ELECTRIC SHOCK can kill. 3.a. The electrode and work (or ground) circuits are electrically “hot” when the welder is on. Do not touch these “hot” parts with your bare skin or wet clothing. Wear dry, hole-free gloves to insulate hands.
  • Page 4 WELDING SPARKS can cause fire or explosion. 6.a. Remove fire hazards from the welding area. If this is not possible, cover them to prevent the welding sparks from starting a fire. Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas.
  • Page 5 PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suiv- antes: Sûreté Pour Soudage A L’Arc 1. Protegez-vous contre la secousse électrique: a.

  • Page 6: Table Of Contents

    RETURN TO MAIN MENU MASTER TABLE OF CONTENTS FOR ALL SECTIONS Safety ............i-iv Installation .
  • Page 7 Section A-1 TABLE OF CONTENTS Section A-1 - INSTALLATION SECTION - Installation ...Section A Technical Specifications...A-2 Safety Precautions ...A-3 High Frequency Protection ...A-3 Connections ...A-4 Gun & Cable Assembly ...A-6 Feeding Wire Electrode ...A-7 LN-15...

  • Page 8: Installation

    TECHNICAL SPECIFICATIONS – LN-15 (K1870-1), (K1870-2 CE) ELECTRODE DIAMETERS and SPEED RANGE Solid Electrode Steel Flux Cored Electrode HEIGHT WIDTH 12.7 Inches 8.7 Inches (323 mm) (221mm) OPERATION: STORAGE: INSTALLATION INPUT VOLTAGE 15-110 VDC (5 Amps Maximum) Across the Arc Model RATED CURRENT 300 Amps 60% Duty Cycle 250 Amps 100% Duty Cycle...

  • Page 9: Safety Precautions

    SAFETY PRECAUTIONS WARNING ELECTRIC SHOCK CAN KILL. • ONLY QUALIFIED PERSONNEL SHOULD PERFORM INSTALLATION. • Turn off input power to the power source at the disconnect switch or fuse box before working on this equipment. Turn off the input power to any other equipment connected to the welding system at the disconnect switch or fuse box before working on the equipment.
  • Page 10 1. Shut the welder off. 2. For electrode Positive polarity welding, connect the electrode cable to the "+" terminal of the welder and work cable to the "-" terminal of the welder. For Electrode Negative welding, connect the electrode cable to the "-"...
  • Page 11 CONNECTION DIAGRAM, ACROSS THE ARC MODEL Set-Up Typically used for general fabrication, maintenance and repair jobs because it’s easy to set up and operate. Requires only one cable-less to carry. Contactor standard on Across The Arc Model. RANGER 8 SAE 400 WITH CV ADAPTER ENGINE DRIVEN WELDERS WITH WIRE FEED MODULE (LOCAL MODE AND CV ADAPTER)

  • Page 12: Connections

    GUN AND CABLE ASSEMBLIES A variety of Lincoln 10' (3.0m) or 15' (4.6m) gun and cable assemblies are available for use with the LN-15, including the Magnum™ models for GMAW, K126 or K115 models for Innershield®. The LN-15 comes factory equipped with a K1500-2 gun connection kit, designed for guns having a Magnum Tweco™...

  • Page 13: Feeding Wire Electrode

    FEEDING WIRE ELECTRODE WARNING • ELECTRIC SHOCK CAN KILL. • When feeding electrode with the gun trigger, the electrode and wire drive mechanism are always "hot" to work and ground and could remain "hot" several seconds after the gun trigger is released. ----------------------------------------------------------------------- 2 STEP/TRIGGER INTERLOCK...
  • Page 14 NOTES LN-15...

  • Page 15: Operation Section

    Section B-1 - OPERATION SECTION - Operation ...Section B Safety Precautions ...B-2 General Description ...B-3 Duty Cycle...B-3 Operational Features and Controls ...B-3 Case Front Controls ...B-4 Power-up Sequence...B-5 CV/CC Mode ...B-6 WFS Units...B-6 Internal Controls ...B-6 Cold/Feed/Gas Purge Switch...B-7 Two Step Trigger Interlock...B-8 Constant Current Operation ...B-9 Setting Wire Feed Speed ...B-10 Making a Weld...B-11...

  • Page 16: Operation

    SAFETY PRECAUTIONS READ AND UNDERSTAND ENTIRE SECTION BEFORE OPERATING MACHINE. WARNING • ELECTRIC SHOCK CAN KILL. Unless using COLD FEED fea- ture, when feeding with gun trig- ger, the electrode and drive mechanism are always electri- cally energized remain energized several sec- onds after the welding ceases..

  • Page 17: Operation

    GENERAL DESCRIPTION The LN-15 is a light weight, portable, durable semi- automatic wire feeder. The LN-15 accommodates spools 8" (200mm) diame- ter up to 4" (100mm) wide. The domestic feeders comes factory equipped with a K1500-2 Magnum Tweco-compatible style #2-#4 gun bushing.

  • Page 18: Case Front Controls

    CASE FRONT CONTROLS (See Figure B.1) ACROSS THE ARC MODEL 1. WIRE FEED SPEED DISPLAY-The Wire Feed Speed display shows the rate the LN-15 will feed electrode during welding. The default WFS units for domestic models are inches/minute and can be changed to meters/minute through the configuration menu.

  • Page 19: Ln-15 Power-Up Sequence

    LN-15 POWER-UP SEQUENCE NORMAL POWER-UP DISPLAY When power is first applied to the LN-15, the display will momentarily show set-up information. For exam- ple, it may show "CV" and "HI", indicating operation from a CV power source and the wire drive is config- ured for the high speed gear.

  • Page 20: Cv/Cc Mode

    Rotate the WFS knob until the desired parameter is displayed. CV/CC Mode: WFS Units: 2. Activate and release the GAS PURGE switch to select the parameter. The present value will then display in the right hand side of the display. Example: 3.

  • Page 21: Cold/Feed/Gas Purge Switch

    WIRE DRIVE CONFIGURATION (See Figure B..2b) Changing the Gun Receiver Bushing ELECTRIC SHOCK can kill. • Turn the input power OFF at the welding power source before installation or changing drive rolls and/or guides. • Do not touch electrically live parts. •...
  • Page 22 • Keep cylinder away from areas where it may be damaged. • Never lift welder with cylinder attached. • Never allow welding electrode to touch cylinder. • Keep cylinder away from welding or other live electrical circuits.

  • Page 23: Constant Current Operation

    CONSTANT CURRENT OPERATION ( See Figure B.3) CAUTION Lincoln Electric does NOT recommend constant current semiautomatic welding for applications which need to meet specified weld metal chemical or mechanical property requirements or weld qual- ity requirements. ------------------------------------------------------------------------ Most semiautomatic welding processes perform better using constant voltage power sources.
  • Page 24 B-10 SETTING ARC SENSING WIRE FEED SPEED FOR CONSTANT CURRENT OPERATION When using a constant current (formerly variable voltage) power source, welding performance is improved using arc sensing wire feed speed (CC operation). In this wire feed mode the wire speed increases if arc voltage increases, and decreases if arc voltage decreases, but remains constant at any specific voltage level.

  • Page 25: Making A Weld

    LN-15 wire feeder is and must be the sole responsibil- ity of the builder/user. Many variables beyond the con- trol of The Lincoln Electric Company affect the results obtained in using the LN-15 wire feeder. These vari- ables include, but are not limited to, welding proce- dure, plate chemistry and temperature, weldment design, fabrication methods and service requirements.
  • Page 26 B-12 NOTES B-12 LN-15...
  • Page 27 Section C-1 TABLE OF CONTENTS Section C-1 - ACCESSORIES SECTION - Accessories ...Section C Factory Installed Equipment...C-2 Optional Equipment...C-2 LN-15...

  • Page 28: Accessories

    FACTORY INSTALLED EQUIPMENT • K1500-2 Gun Receiver Bushing. OPTIONAL EQUIPMENT • K1500-1,-3,-5 Gun Receiver Bushings • Drive Roll Kits • Drive Roll Kits (Includes drive rolls and guide tube necessary to feed the identified wire size and type. WIRE TYPE Steel Wires: (Including stainless steel) Cored Wires:...

  • Page 29: Maintenance Section

    Section D-1 TABLE OF CONTENTS Section D-1 - MAINTENANCE SECTION - Maintenance ...Section D Routine Maintenance...D-2 Periodic Maintenance...D-2 Calibration Specification ...D-2 Major Component Locations...D-3 LN-15...

  • Page 30: Maintenance

    SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Turn the input power to the welding power source off at the fuse box before working in the terminal strip. • Only qualified personnel should install, use or service this equipment. ROUTINE MAINTENANCE Routine maintenance consists of periodically blowing out the machine, using a low pressure airstream, to remove accumulated dust and dirt from inside the...
  • Page 31 MAINTENANCE FIGURE D.1 – MAJOR COMPONENT LOCATIONS 1. Molded Case Assembly 2. Control Box Assembly 3. Control Box Cover Assembly 4. Wire Drive & Contactor Assembly LN-15...
  • Page 32 NOTES LN-15...
  • Page 33 Section E-1 - THEORY OF OPERATION SECTION - Theory of Operation ...Section E General Description ...E-2 Input Power...E-2 Trigger & Control Circuits...E-3 Wirefeed Speed Control & Feedback ...E-4 Display Board ...E-5 FIGURE E.1 – LN-15 BLOCK LOGIC DIAGRAM ELECTRODE INPUT VOLTAGE TOROID ASSEMBLY FULL...

  • Page 34: Theory Of Operation

    THEORY OF OPERATION FIGURE E.2 – GENERAL DESCRIPTION & INPUT POWER ELECTRODE INPUT VOLTAGE TOROID ASSEMBLY FULL WAVE BRIDGE ON/OFF SWITCH WORK SENSING LEAD "WORK" VOLTAGE FEEDBACK #21 GENERAL DESCRIPTION The LN-15 is a lightweight portable semi-automatic wire feeder. The “Across the Arc” model is capable of operating with Lincoln DC power sources supplying between 15VDC to 110VDC.
  • Page 35 THEORY OF OPERATION FIGURE E.3 – TRIGGER & CONTROL CIRCUITS ELECTRODE INPUT VOLTAGE TOROID ASSEMBLY FULL WAVE BRIDGE ON/OFF SWITCH WORK SENSING LEAD "WORK" VOLTAGE FEEDBACK #21 TRIGGER AND CONTROL CIRCUITS When the gun trigger is closed (activated) the Feed Head Board is “signaled”...
  • Page 36 .THEORY OF OPERATION FIGURE E.4 – WIRE FEED SPEED CONTROL & FEEDBACK ELECTRODE INPUT VOLTAGE TOROID ASSEMBLY FULL WAVE BRIDGE ON/OFF SWITCH WORK SENSING LEAD "WORK" VOLTAGE FEEDBACK #21 WIRE FEED SPEED CONTROL AND FEEDBACK The combination of the Procedure Switch and the Wire Feed Speed control provide a command voltage for the Feed Head Control Board.
  • Page 37 THEORY OF OPERATION ELECTRODE INPUT VOLTAGE TOROID ASSEMBLY FULL WAVE BRIDGE ON/OFF SWITCH WORK SENSING LEAD "WORK" VOLTAGE FEEDBACK #21 DISPLAY BOARD The Display Board provides information to the user through digital displays and LED’s. The Display Board communicates with the Feed Head Board via the SPI Bus cable.
  • Page 38 NOTES LN-15...
  • Page 39 Section F-1 - TROUBLESHOOTING & REPAIR SECTION - Troubleshooting & Repair Section ...Section F How to Use Troubleshooting Guide...F-2 PC Board Troubleshooting Procedures and Replacement...F-3 Troubleshooting Guide ...F-4 Test Procedures Boost Power Board Test ..F-11 Gas Solenoid Valve Test ...F-15 Contactor Test ...F-17 Drive Motor Test ...F-19 Hall Effect Module Test...F-21...

  • Page 40: Troubleshooting & Repair Section

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877. CAUTION Step 3. PERFORM COMPONENT TESTS. The last column, labeled “Recommended Course of...

  • Page 41: Pc Board Troubleshooting Procedures

    - If the PC board uses protective shorting jumpers, don’t remove them until installation is complete. - If you return a PC board to The Lincoln Electric Company for credit, it must be in the static-shielding bag. This will prevent further damage and allow prop- er failure analysis.

  • Page 42: Troubleshooting Guide

    If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877. detailed in the beginning of this manual.
  • Page 43 If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 44 50 to 600 IPM.(1.3 to 15.3 m/min) If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 45 If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877. detailed in the beginning of this manual.
  • Page 46 If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877. detailed in the beginning of this manual.
  • Page 47 TROUBLESHOOTING & REPAIR DESCRIPTION/ FAULT CODES DEFINITION Average motor over cur- 0081 rent shutdown Locked rotor condition 0082 on the wire drive motor. Trigger lockout. 0086 NOTE: If more than one fault message is being displayed, perform all the checks for the faults before replacing the printed circuit board RESOLUTION •...
  • Page 48 F-10 NOTES F-10 LN-15...

  • Page 49: Boost Power Board Test

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 50 F-12 TROUBLESHOOTING & REPAIR BOOST POWER BOARD TEST (continued) TEST PROCEDURE 1. Remove input power to the LN-15. 2. Perform the Cover and Spindle Mount removal procedure. 3. Locate the Boost Power Board. See Figure F.1. 4. Apply the correct DC voltage to the LN-15 (15-110 VDC).
  • Page 51 F-13 TROUBLESHOOTING & REPAIR F-13 BOOST POWER BOARD TEST (continued) FIGURE F.2 – BOOST POWER BOARD FIGURE F.3 – PLUG J47 LEAD LOCATIONS 526A Neg. Pos. 527A LN-15...
  • Page 52 F-14 NOTES F-14 LN-15...

  • Page 53: Troubleshooting And Repair

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 54 F-16 TROUBLESHOOTING AND REPAIR GAS SOLENOID VALVE TEST LEADS 552 &553 TEST PROCEDURE 1. Remove power to the LN-15 machine. 2. Perform the Cover and Spindle Mount removal procedure. 3. Locate and remove the two solenoid leads 552 & 553 from the solenoid valve.

  • Page 55: Contactor Test

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 56 F-18 TROUBLESHOOTING AND REPAIR LARGE TERMINAL STUDS TEST PROCEDURE 1. Remove input power to the LN-15. 2. Perform the Wire Drive Assembly removal procedure. 3. Locate the contactor and leads 507 and 578 (blue) and separate the two in line connectors. See Figure F.5. 4.

  • Page 57: Drive Motor Test

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 58 F-20 TROUBLESHOOTING AND REPAIR DRIVE MOTOR TEST (Continued) LEADS 550 & 551 TEST PROCEDURE 1. Remove the input power to the LN-15. 2. Perform the Wire Drive Assembly Removal procedure. 3. Locate the Positive lead 550 (white) and disconnect from motor. Note pin location for reassembly.

  • Page 59: Hall Effect Module Test

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 60 F-22 TROUBLESHOOTING AND REPAIR HALL EFFECT MODULE TEST (Continued) Figure F.7 - PLUG J2 LEAD LOCATION Blue (562) TEST PROCEDURE 1. Remove the input power to the LN-15. 2. Perform the Wire Drive Assembly Removal procedure. 3. Locate the three Hall Effect leads at Plug J2.

  • Page 61: Contactor Removal And Replacement

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 62 F-24 TROUBLESHOOTING AND REPAIR CONTACTOR REMOVAL AND REPLACEMENT PROCEDURE (Continued) Figure F.8 - CONTACTOR LEAD LOCATION Copper Bus Bar REMOVAL PROCEDURE 1. Remove the input power to the LN-15. 2. Perform the Roll Cage Removal Procedure. 3. Perform the Wire Drive Assembly Removal procedure.
  • Page 63 F-25 TROUBLESHOOTING AND REPAIR CONTACTOR REMOVAL AND REPLACEMENT PROCEDURE (Continued) REPLACEMENT PROCEDURE 1. Install the new contactor using the four screws previously removed. 2. Replace the copper bus bar and cable. 3. Install the the contactor assembly into the case. 4.
  • Page 64 F-26 NOTES F-26 LN-15...

  • Page 65: Feedhead Control Board Removal And Replacement

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 66 F-28 TROUBLESHOOTING AND REPAIR FEED HEAD CONTROL BOARD REMOVAL AND REPLACEMENT PROCEDURE (Continued) Figure F.9 - FEED HEAD CONTROL BOARD LOCATION REMOVAL PROCEDURE 1. Remove input power to the LN-15. 2. Perform the Cover and Spindle Mount Removal Procedure. 3. Locate the Feed head Control Board. and plugs J81, J82, J83, J84, J85, J86 and J88.
  • Page 67 F-29 F-29 TROUBLESHOOTING AND REPAIR FEED HEAD CONTROL BOARD REMOVAL AND REPLACEMENT PROCEDURE (Continued) Figure F.10 - FEED HEAD CONTROL BOARD 3/8" Mounting Nuts 3/8" Mounting Nuts LN-15...
  • Page 68 F-30 NOTES F-30 LN-15...

  • Page 69: Boost Power Supply Board Removal And Replacement

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 70 F-32 TROUBLESHOOTING AND REPAIR BOOST POWER SUPPLY BOARD REMOVAL AND REPLACEMENT PROCEDURE (Continued) Figure F.11 - BOOST POWER BOARD LOCATION REMOVAL PROCEDURE 1. Remove input power to the LN-15. 2. Perform the Cover and Spindle Mount Removal Procedure. 3. Locate the Boost Power Supply Board. See Figure F.11.
  • Page 71 F-33 F-33 TROUBLESHOOTING AND REPAIR BOOST POWER SUPPLY BOARD REMOVAL AND REPLACEMENT PROCEDURE (Continued) Figure F.12 - BOOST POWER BOARD PLUG/MOUNT LOCATION 3/8" Mounting 3/8" Mounting Nuts LN-15...
  • Page 72 F-34 NOTES F-34 LN-15...

  • Page 73: Wire Drive Assembly Removal And Replacement

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 74 F-36 TROUBLESHOOTING AND REPAIR REMOVAL AND REPLACEMENT PROCEDURE (Continued) Figure F.13 - WIRE DRIVE MOUNTING SCREW LOCATION REMOVAL PROCEDURE 1. Remove input power to the LN-15. 2. Open door. 3. Remove the four screws mounting the wire drive assembly to the case. See Figure F.13.
  • Page 75 If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 76 F-38 TROUBLESHOOTING AND REPAIR COVER AND SPINDLE MOUNT REMOVAL AND REPLACEMENT PROCEDURE (Continued) Figure F.14 - COVER AND SPINDLE MOUNT LOCATION REMOVAL PROCEDURE 1. Remove input power to the LN-15. 2. Open door. 3. Locate the spindle mount and cover assembly.
  • Page 77 F-39 TROUBLESHOOTING AND REPAIR COVER AND SPINDLE MOUNT REMOVAL AND REPLACEMENT PROCEDURE (Continued) Figure F.15 - COVER AND SPINDLE MOUNT SCREW LOCATION REPLACEMENT PROCEDURE 1. Replace all leads to switches and solenoid. 2. Maneuver assembly into case. 3. Connect gas hose to conductor block. 4.
  • Page 78 F-40 NOTES F-40 LN-15...

  • Page 79: Roll Cage Removal And Replacement

    If for any reason you do not understand the test procedures or are unable to per- form the test / repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
  • Page 80 F-42 TROUBLESHOOTING AND REPAIR REMOVAL AND REPLACEMENT PROCEDURE (Continued) Figure F.16 - ROLL CAGE BOLT LOCATION REMOVAL PROCEDURE 1. Remove input power to the LN-15. 2. Using a 7/16” Wrench remove the five bolts securing the roll cage to the LN- 15 case.

  • Page 81: Retest After Repair

    F-43 TROUBLESHOOTING AND REPAIR F-43 RETEST AFTER REPAIR If a failed test indicates that any mechanical part that could affect the machine’s electri- cal characteristics must be replaced or if any electrical components are repaired of replaced, the machine must be retested and meet the following standards. Wire Feed Speed...
  • Page 82 F-44 NOTES F-44 LN-15...
  • Page 83 Section G-1 - ELECTRICAL DIAGRAMS SECTION - Electrical Diagrams ...Section G Wiring Diagram (L11436-1) ..........G-2 Entire Machine Schematic (G4198-1) .
  • Page 84 WIRING DIAGRAM - ENTIRE MACHINE - (L11436-1) L11436-1 ENGINEERING CONTROLLED CHANGE DETAIL: MANUFACTURER: CAVITY NUMBERING SEQUENCE (COMPONENT SIDE OF P.C. BOARD) J81,J82 J83,J88 J2,J47,J84 J1,J86 J85,J87 N.C. ON / OFF SWITCH 526B 526C BAFFLE MOUNTED RECTIFIER DIODE BRIDGE FEED PLATE N.A.
  • Page 85 SCHEMATIC - ENTIRE MACHINE - (G4198-1) G4198-1 ENGINEERING CONTROLLED RELEASED A.03 FROM "X" MANUFACTURER: General Notes: Codes 10864,11033 & 11035 do not support the high/low speed gear change. Only the high speed (1.8" diameter) gear may be used. Error Description Cause and Remedy Code Err 0081...

  • Page 86: Electrical Diagrams

    ELECTRICAL DIAGRAMS SCHEMATIC - BOOST PC BOARD - (L11818-2) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. LN-15...
  • Page 87 Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.
  • Page 88 ELECTRICAL DIAGRAMS SCHEMATIC - FEEDHEAD P.C. BOARD - (G3883-1E0/1) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. LN-15...
  • Page 89 ELECTRICAL DIAGRAMS SCHEMATIC - FEEDHEAD P.C. BOARD - (G3883-1E0/2) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. LN-15...
  • Page 90 Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.
  • Page 91 ELECTRICAL DIAGRAMS SCHEMATIC - SPI DISPLAY P.C. BOARD - (L11756-1E1) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. LN-15...
  • Page 92 Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.
  • Page 93 Your Company__________________________ Your Name_____________________________ Please give detailed description below: ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ SD287 01/99 Thank You, Technical Services Group Lincoln Electric Co. 22801 ST. Clair Ave. Cleveland, Ohio 44117-1199 FAX 216-481-2309...

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