Lincoln Electric LN-25 Service Manual
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Lincoln Electric LN-25 Service Manual

Portable cv/cc semiautomatic wire feeder
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LN-25
SEMIAUTOMATIC WIRE FEEDER
For use with machines having Code Numbers:
Safety Depends on You
Lincoln arc welding and cutting equip-
ment 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
READING THIS MANUAL AND THE
SAFETY PRECAUTIONS CONTAINED
THROUGHOUT. And, most importantly,
think before you act and be careful.
SERVICE MANUAL
• 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
All manuals and user guides at all-guides.com
RETURN TO MAIN INDEX
PORTABLE CV/CC
™
9218
9219
9220
9383
9810
9811
9812
• World's Leader in Welding and Cutting Products •
10556
11144
10557
11145
10558
11282
11144
11283
11145
11282
11283
Copyright © Lincoln Global Inc.
SVM114-C
July, 2008

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  • Page 1 All manuals and user guides at all-guides.com RETURN TO MAIN INDEX SVM114-C LN-25 PORTABLE CV/CC ™ July, 2008 SEMIAUTOMATIC WIRE FEEDER For use with machines having Code Numbers: 9218 10556 11144 9219 10557 11145 9220 10558 11282 9383 11144 11283...
  • Page 2 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: Safety

    All manuals and user guides at all-guides.com i i i i SAFETY i i i i ELECTRIC SHOCK can kill. ARC RAYS can burn. 3.a. The electrode and work (or ground) circuits 4.a. Use a shield with the proper filter and cover are electrically “hot”...
  • Page 4 All manuals and user guides at all-guides.com i i i i i i S S A A F F E E T T Y Y i i i i i i WELDING and CUTTING CYLINDER may explode SPARKS can if damaged. cause fire or explosion.
  • Page 5 All manuals and user guides at all-guides.com i i v v S S A A F F E E T T Y Y i i v v 6. Eloigner les matériaux inflammables ou les recouvrir afin de PRÉCAUTIONS DE SÛRETÉ prévenir tout risque d’incendie dû...

  • Page 6: Table Of Contents

    P-175 Parts Manual (above code 10500) ....... . P-333 LN-25™...
  • Page 7 Work Cable Connection ........Wire Feed Drive Roll and Guide Tube Kits ......LN-25™...

  • Page 8: Installation

    All manuals and user guides at all-guides.com INSTALLATION TECHNICAL SPECIFICATIONS – LN-25™ V V O O L L T T A A G G E E OPERATING ARC VOLTAGE Constant Voltage (CV) 15-40 VDC (110VDC Maximum OCV) Constant Current (CC)

  • Page 9: Safety Precautions

    POWER SOURCE CONNECTION the DC-250™ is turned on. The LN-25™ can be used with any DC welding power b. Connect electrode cable to the “Innershield/ source. A constant voltage power source is GMAW”...

  • Page 10: 650

    “POSITIVE”. For electrode positive welding, Connection” switch at appropriate position. interchange the above lead connections so the LN-25™ electrode lead is then connected to the d. Place power source toggle switch in “Output positive power source terminal. Control at DC(CV) -400™” position, unless a remote control is connected to 75, 76 and 77 on b.

  • Page 11: Weld Cable Connection

    “C” suffix to the wire sizes. Route the electrode cable through the oval hole in the lower por tion of the LN-25™ rear panel. Drive rolls for only solid electrode sizes are stencilled with an “S” Connect the electrode cable to the LN-25™ input suffix to the wire sizes.
  • Page 12 All manuals and user guides at all-guides.com NOTES LN-25™...
  • Page 13 Welding Capability ......... . LN-25™ Instruments and Controls ......

  • Page 14: Operation

    Pulse Power 500™ with K460-1 LN-25™ Kit. tection. WELDING CAPABILITY The LN-25™ will handle up to 500 Amp 60% duty cycle welding currents. However, when equipped with a K443-1,-2, or-3 (depending on code number) Contactor, the LN-25™ will handle up to 300 Amp 60% duty cycle.

  • Page 15: Instruments And Controls

    OPERATION LN-25™ INSTRUMENTS AND NOTE: CONTROLS 1. The Voltmeter will read zero if the LN-25™ work clip lead is not connected to work, even if the Refer to Figure B.1 for control locations. elec trode is electrically “hot” to work.
  • Page 16 Solenoid Kit in the Accessories Section. the LN-25™ work lead clip if the power source output is on. The clip will be electrically “HOT” to work if the GAS POST PRE-FLOW TIMERS (OPTIONAL) input electrode cable to the LN-25™...

  • Page 17: Sequence Of Operation

    MOUNTING 22 TO 30 LB READI-REEL COILS spool in a clockwise direction when dereeled from ® the bot tom of the coil. The early models of the LN-25™ were factory c. Replace and tighten the locking collar. equipped with a K363-P Readi-Reel ® Adapter which is required to load Lincoln 22 to 30 lb Readi-Reel ®...

  • Page 18: Loading Wire Drive

    “birdnest”.) Keep gun in LN-25™ gun holder when not feeding wire to prevent accidental arcing. c. Insert the free end through the incoming guide tube to the drive roll.

  • Page 19: Presetting Wire Feed Speed

    29V for example used). specific voltage level. A chart representation of the CC wire speed setting The LN-25™ permits accurate CC mode presetting of graph is shown in Figure B.4, giving the Wire Speed the desired wire feed speed, for the desired arc...

  • Page 20: Making A Weld

    K624-1 42V Remote Control Module is installed but 372 331 298 270 248 229 213 198 186 175 the LN-25™ is to be used without the Remote Control 394 350 315 286 263 242 225 210 197 185 Cable Assembly, then the Remote Board harness plug...

  • Page 21: Welding

    The gun trigger controls wire feed only. d. To stop welding, release the gun trigger and then pull the gun away from the work. Store the gun in the LN-25™ insulated gun holder when not welding. WARNING PROCEDURE AT END OF COIL CYLINDER may explode if damaged.

  • Page 22: Automatic Protection Shutdown

    To aid in stabilizing the arc voltage when welding on excessive feeding force, jammed drive rolls or shorted CC power sources the LN-25™ is provided with a CC motor leads), the LN-25™ will shut down within a few wire feed mode. This arc voltage sensing feed mode seconds after the overload occurs.
  • Page 23 K434-1 Gas Flow Timer Kit ....... . LN-25™ Contactor Kit ........

  • Page 24: Accessories

    How to use Table C.1. Determine which Kit No. is to be used. Locate that Kit No. in the left hand vertical column. Scan horizontally to determine which LN-25™ model is required and what additional kits may be required. TABLE C.1 LN-25™...

  • Page 25: Optional Accessories

    LN-25™. are energized is adjustable between at least Install by connecting a supply hose from the gas flow 0 to 1 second.

  • Page 26: Ln-25™ Contactor Kit

    NOTE: If the K431-1 Remote Output Control Kit is LN-25™ CONTACTOR KIT (K443-1 FOR CODES installed but the LN-25™ is to be used without the BELOW 10500, K443-2 FOR CODES 10500 TO 10558 OR K433-3 K432 Remote Control Cable Assembly, then the Re -...

  • Page 27: K439 Remote Extension Cable Assembly

    NOTE: If the K624-1 42V Remote Output Control (2-4). Module is installed but the LN-25™ is to be used without the K625, K626 or K627 Remote Control K444-2 connects to power sources with a 14-pin...

  • Page 28: Accessories

    .252 CONNECTOR MUST .260 BE INSULATED 1.00 IN THIS AREA 2.00 1.25 LN-25 Connector for 1/16 (.062) through 5/64 Wire .180 .160 .03 x 45 STYLE "B" "A" DIA. HOLE .495 MAX. LN-25 Cable Connector for .023 through .052 Wire DIA.
  • Page 29 Adjusting Speed Sensor Module ....... Calibration of LN-25™ Wire Speed Dial ......

  • Page 30: Maintenance

    G1757- 1 PC boards a 5 amp fuse was used to changed. interrupt the 667 lead. The LN-25™ will not operate if the fuse is blown. The drive rolls for .035 through .052 cored electrode ⁄...
  • Page 31 Cut wire off at the end of the gun tip. 1. Be sure all power to the LN-25™ is shut off at the b. Press trigger to feed wire for exactly 30 seconds. power source.
  • Page 32 All manuals and user guides at all-guides.com NOTES LN-25™...
  • Page 33 INPUT CABLE ARMATURE VOLTAGE VOLT TO WORK METER RPM FEEDBACK CONTROL SENSING LEAD BOARD RANGE WIRE FEED SWITCH MODE SWITCH WIRE SPEED CONTROL SOLENOID PC BOARD SOLENOID EARLY MODELS ONLY - LATER MODELS HAVE CIRCUITRY INCLUDED ON CONTROL BOARD LN-25™...

  • Page 34: Theory Of Operation

    It can be used with most constant voltage or constant current DC The LN-25™ is a portable semiautomatic wire power sources without the need of a control feeder designed to operate from a DC arc cable.
  • Page 35 “signaled” to apply armature voltage to the feed speed is maintained. See Figure E.3. When drive motor and to activate any auxiliary circuits the LN-25™ is connected to a constant current that may be incorporated within the LN-25™. (CC) power source, a variable wire feed speed See Figure E.3.
  • Page 36 GAS SOLENOID Early Models Only (Below 10500) The contactor, contactor PC board, and cold inch The gas solenoid feature permits the LN-25™ to be switch are commonly incorporated in the LN-25™. This used for gas metal arc welding (GMAW) processes.
  • Page 37 If excessive motor overload occurs (due to prolonged excessive feeding force, jammed drive rolls or shorted motor leads) the LN-25™ will shut down within a few seconds after the overload occurs. The shutdown will reset automatically when the gun trigger is released,...
  • Page 38 All manuals and user guides at all-guides.com NOTES LN-25™...
  • Page 39 • Never work on the inside of the machine without removing the input power. You can receive a life threatening electrical shock if you fail to do this. Only qualified technicians should perform installation, maintenance, and troubleshooting work on the machine. LN-25™...

  • Page 40: Troubleshooting And Repair

    HOW TO USE TROUBLESHOOTING GUIDE WARNING Service and Repair should only be performed by 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 41: Pc Board Troubleshooting Procedures

    Do not touch electrically hot parts. - 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- CAUTION er failure analysis.

  • Page 42: Troubleshooting Guide

    NOTE: Many options and possible option combinations are available for the LN-25™. In many cases, it is best to disconnect the options and test the LN-25™ in its “basic” form. In this manner, many possible faulty circuits can be isolated and/or eliminated from the troubleshooting procedure.
  • Page 43 CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877. LN-25™...
  • Page 44 Replace. Contactor PC Board. CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877. LN-25™...

  • Page 45: Gas Solenoid Valve And Solenoid Pc Board Test

    (FOR CODES BELOW 10500 ONLY) WARNING 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 or 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 46 GAS SOLENOID VALVE 1. Open the case door. Remove the wire reel by removing the retaining collar. See Figure F.1. 2. Remove the screws holding the control box cover in place and remove the control box cover. See Figure F.1. LN-25™...
  • Page 47 12 VDC to the gas solenoid. 5. If the solenoid activates and allows gas flow, then the solenoid valve is good. NOTE: There should not be any gas flow until the solenoid is activated. LN-25™...
  • Page 48 SOLENOID PC BOARD 1. Apply at least 25 VDC but no more than 100 VDC to the LN-25™ from the electrode cable to the work sensing lead. Make sure the polarity switch is set to match the polarity of the electrode cable.
  • Page 49 The appropriate jumper plugs may be used to 4. Check for the presence of 10 VDC from lead isolate and check suspect contactor or remote 606(+) to lead 621(-). When the LN-25™ trigger control boards. circuit is activated, the voltage should drop to about 1 VDC.
  • Page 50 All manuals and user guides at all-guides.com F-12 F-12 NOTES LN-25™...

  • Page 51: Gas Solenoid Valve And Control Pc Board Test

    Volt/Ohmmeter DC Voltage Source (25 to 100 VDC) NOTE: LN-25™ units with the L12253-[ ] Control Board do not use a Contactor PC Board. Codes above 10100 may have been upgraded to use this Control Board and must be tested accordingly.
  • Page 52 GAS SOLENOID VALVE 1. Open the case door. Remove the wire reel by removing the retaining collar. See Figure F.5. 2. Remove the screws holding the control box cover in place and remove the control box cover. See Figure F.5 LN-25™...
  • Page 53 12 VDC to the gas solenoid. 5. If the solenoid activates and allows gas flow, then the solenoid valve is good. NOTE: There should not be any gas flow until the solenoid is activated. LN-25™...
  • Page 54 CONTROL PC BOARD SOLENOID CIRCUITRY TEST 1. Apply at least 25 VDC but no more than 100 VDC to the LN-25™ from the electrode cable to the work sensing lead. Make sure the polarity switch is set to match the polarity of the electrode cable.
  • Page 55 Control boardhave thesme connection 690(+) to lead 691(-) at solenoid valve. points ad shown in Figure F.8 for the The LN-25™ trigger circuit must be activated supply and solenoid voltages or the purge button must be pressed. 4. If the above voltage reading is not correct at the solenoid valve, check for 5 to 6VDC at plug J2 pin 3 lead 690(+) &...
  • Page 56 All manuals and user guides at all-guides.com F-18 F-18 NOTES LN-25™...

  • Page 57: Hall Effect Module Test

    HALL EFFECT MODULE TEST WARNING 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 or 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 58 Control Board). Do not disconnect the leads from the board. See 2. Remove the screws holding the control box Figure F.9, or F.10. See Figure F.11 for codes cover in place and remove the control box above 10500. cover. See Figure F.5. LN-25™...
  • Page 59 4. Apply at least 25 VDC but no more than 100 represents the correct feedback voltage from VDC to the LN-25™ from the electrode cable to the hall effect device to the control board. the work sensing lead. Observe polarity and set 7.
  • Page 60 All manuals and user guides at all-guides.com F-22 F-22 NOTES LN-25™...

  • Page 61: Wire Drive Motor Test

    WIRE DRIVE MOTOR TEST WARNING 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 or 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 62 See the motor is grounded to the motor case and Figure F.12. should be replaced. For codes 9812 and below, remove the two motor leads 539(white) and 541(black) from the control PC board. See Figure F.10. LN-25™...

  • Page 63: Contactor & Contactor Pc Board Test

    Phillips Head Screwdriver 12 VDC Supply Volt/Ohmmeter NOTE: LN-25™ units with the L12253-[ ] Control Board do not use a Contactor PC Board. Codes above 10100 may have been upgraded to use this Control Board and must be tested accordingly.
  • Page 64 See Figure F.5. codes 9812 and below, remove the two 2. Remove the screws holding the control box contactor coil leads from the contactor PC cover in place and remove the control box board. See Figure F.14. cover. See Figure F.5. LN-25™...
  • Page 65 6. If the contactor activates when the 12 VDC is are “stuck” and the contactor is faulty. Replace. applied, check the resistance between the two large ter minal studs with the contactor activated. The resistance should be very low (0 to 1 ohm). LN-25™...
  • Page 66 3. Apply at least 25VDC but no more than 6. Be sure to reconnect all plugs previously 100VDC to the LN-25™ from the electrode removed. cable to the work sensing lead. Observe polarity and set polarity switch.
  • Page 67 1. Check to be sure that plug P14 is connected to the Control Board and is secure. 2. Apply at least 25vdc but no more than 100vdc to the LN-25™ from the Electrode cable to the Work Sensing Lead. Observe the polarity and set the Polarity Switch accordingly.
  • Page 68 All manuals and user guides at all-guides.com F-30 F-30 NOTES LN-25™...

  • Page 69: Contactor Pc Board Replacement

    CONTACTOR PC BOARD REPLACEMENT WARNING 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 or 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 70 J7 from the contactor PC board. See Procedures at the beginning of this section. Figure F.17. 2. Open the case door. Remove the wire reel by removing the retaining collar. See Figure F.5. 3. Remove the screws holding the control box LN-25™...
  • Page 71 5. For codes 9812 and below, remove the codes 9812 and below, remove plug J3 from the contactor coil leads and plug J7 from the control PC board. See Figure F.18. contactor PC board. See Figure F.17. Also for LN-25™...
  • Page 72 8. For codes 10148 and above, install plug J9 and plug J7 onto the contactor PC board. See Figure F.17. 9. For codes 9812 and below, install the contactor LN-25™...

  • Page 73: Control Pc Board Replacement

    CONTROL PC BOARD REPLACEMENT WARNING 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 or 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 74 J1, J2, J3 and J4. See Figure F.20. It may be necessary to remove the Contactor PC Board or the Remote Control PC Board if installed. FIGURE F.21. – CONTROL PC BOARD (CODES 9812 AND BELOW). G1757 G1757 LN-25™...
  • Page 75 All manuals and user guides at all-guides.com F-37 F-37 TROUBLESHOOTING AND REPAIR FIGURE F.22. - PLUG LOCATIONS FOR L12253-[ ] CONTROL BOARD Contactor LN-25™...
  • Page 76 PC board. See Figure F.20. installing the screws previously removed. NOTE:For Codes above 10148 with a newer 12. Install the wire reel and retaining collar and Control Board (L12253-[ ]) and a contactor, close the case door. install plug J14. See Figure F.22. LN-25™...

  • Page 77: Contactor Replacement (Codes Below 10500

    (FOR CODES BELOW 10500) WARNING 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 or 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 78 8. Carefully remove the contactor from the LN- 25™. 1. Open the case door. Remove the wire reel by 9. Install a new contactor in the LN-25™. removing the retaining collar. See Figure F.5. 10. Connect the contactor coil lead in-line 2.

  • Page 79: Contactor Replacement (Codes Above 10500

    (FOR CODES ABOVE 10500) WARNING 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 or 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 80 Carefully remove the contactor assembly from the LN-25™. 1. Open the case door. Remove the wire reel by 10. Install a new contactor in the LN-25™. removing the retaining collar. See Figure F.5. 11. Connect the contactor coil lead in-line 2.

  • Page 81: Gas Solenoid Valve And/Or Solenoid

    BOARD (IF PRESENT) REPLACEMENT WARNING 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 or 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 82 Disconnect wiring only as needed. 3. For codes 10148 thru 10500, remove plug J11 from the solenoid PC board. Also, disconnect FIGURE F.28. – GAS SOLENOID ASSEMBLY WIRING (FOR CODES ABOVE 10500). LN-25™...
  • Page 83 4e. Remove any necessary brass fittings required. FIGURE F.30. GAS SOLENOID ASSEMBLY (FOR CODES ABOVE 10500) BRASS FITTING GAS SOLENOID VALVE GAS SOLENOID NIPPLE GAS HOSE GAS SOLENOID VALVE MOUNTING SCREW GAS SOLENOID ASSEMBLY BRACKET LN-25™...
  • Page 84 PC board. installing the three screws previously removed. 10. Install the replacement solenoid PC board onto 17. Install the wire reel and retaining collar and the assembly bracket and secure with the two close the case door. mounting screws. LN-25™...

  • Page 85: Drive Motor And Gearbox Replacement And Access To Hall Effect Module

    ACCESS TO HALL EFFECT MODULE WARNING 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 or 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 86 See Figure F.32. cover. See Figure F.5. 6. Carefully remove the wire drive assembly. See 4. For codes 10148 and above, separate both in- Figure F.32. LN-25™...
  • Page 87 Install the rear end plate, lock washers and screws. 10. Position the wire drive assembly inside the case and secure to the bottom of the case with the FIGURE F.33. – CONTROL BOARD G1757 G1757 LN-25™...
  • Page 88 DRIVE MOTOR AND GEARBOX REPLACEMENT AND ACCESS TO HALL EFFECT MODULE (continued) FIGURE F.34. – DRIVE MOTOR REPLACEMENT. DRIVE MOTOR HALL EFFECT MODULE GEARBOX REAR END PLATE LOCKWASHER FLAT WASHER END PLATE MOUNTING SCREW LOCKWASHER DRIVE MOTOR MOUNTING SCREW LN-25™...

  • Page 89: Retest After Repair

    Must operate when gun trigger is activated Contactor (optional) ......Must operate when gun trigger is activated LN-25™...
  • Page 90 All manuals and user guides at all-guides.com F-52 F-52 NOTES LN-25™...
  • Page 91 CONTACTOR PC BOARD ASSEMBLY - CODE 10100 THRU 10500 (L9670-1) ... . . G-20 CONTACTOR PC BOARD ASSEMBLY - BELOW CODE 9900 (L9185-2) ....G-21 LN-25™...
  • Page 92 All manuals and user guides at all-guides.com ELECTRICAL DIAGRAMS WIRING DIAGRAM - ABOVE CODE 11140 (G4679) N.B., N.D., OPTIONAL REMOTE N.H. TIMER P.C. KIT PLUG COLD INCH CONTROL BOARD 530C 530B PUSHBUTTON P.C. BOARD 530A N.A. SWITCH 500C 500B 530A 530A OPTIONAL TIMER KIT N.M .
  • Page 93 All manuals and user guides at all-guides.com ELECTRICAL DIAGRAMS WIRING DIAGRAM - CODE 10556 THRU 10500 (L10925) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine. ¤...
  • Page 94 All manuals and user guides at all-guides.com ELECTRICAL DIAGRAMS WIRING DIAGRAM - CODE 10100 THRU 10500 (L9644) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine. ¤...
  • Page 95 All manuals and user guides at all-guides.com ELECTRICAL DIAGRAMS WIRING DIAGRAM - BELOW CODE 9900 (L7545) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine. ¤...
  • Page 96 ENGINEERING CONTROLLED CHANGE DETAIL: CAVITY NUMBERING SEQUENCE MANUFACTURER: GENERAL INFORMATION Input Power (COMPONENT SIDE OF P.C. BOARD) ELECTRICAL SYMBOLS PER E1537 LN-25 ACROSS THE ARC MODEL 15V-110VDC COLOR CODE BLACK WHITE CODES 11144, 11145, 11146 BLUE INPUT VOLTAGE LN-25 FEEDHEAD...
  • Page 97 All manuals and user guides at all-guides.com ELECTRICAL DIAGRAMS SCHEMATIC - COMPLETE MACHINE - BELOW CODE 9900 ONLY (G1833) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
  • Page 98 All manuals and user guides at all-guides.com ELECTRICAL DIAGRAMS SCHEMATIC - CONTROL PC BD - ABOVE CODE 11140 (G4616-5) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
  • Page 99 All manuals and user guides at all-guides.com ELECTRICAL DIAGRAMS SCHEMATIC - CONTROL PC BD - CODE 10556 THRU 10558 (G3424-3) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
  • Page 100 All manuals and user guides at all-guides.com G-10 G-10 ELECTRICAL DIAGRAMS SCHEMATIC - CONTROL PC BD - CODE 10100 THRU 10500 (G2194) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤...
  • Page 101 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 102 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 103 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 104 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 105 WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY FRAME CONNECTION NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE EARTH GROUND CONNECTION NUMBER. FILE: M19065_1BA Ch’ge.Sht.No. EQUIP. LN-25 THE LINCOLN ELECTRIC CO. TYPE 2-20-98A CONTACTOR SCHEMATIC CLEVELAND, OHIO U.S.A. 10-23-98E SUBJECT NONE SCALE SHT.
  • Page 106 All manuals and user guides at all-guides.com G-16 G-16 ELECTRICAL DIAGRAMS SCHEMATIC - CONTACTOR PC BD - CODE 10100 THRU 10500 (M17621) R i i STANDARD This print is Current NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤...
  • Page 107 All manuals and user guides at all-guides.com G-17 G-17 ELECTRICAL DIAGRAMS SCHEMATIC - CONTACTOR PC BD - BELOW CODE 9900 (L7535-[ ] CONTACTOR - M15428) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤...
  • Page 108 All manuals and user guides at all-guides.com G-18 G-18 ELECTRICAL DIAGRAMS SCHEMATIC - CONTACTOR PC BD - BELOW CODE 9900 (L9185-[ ] CONTACTOR - M17139) NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤...
  • Page 109 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 110 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 111 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.

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