Lincoln-electric LN-25 SVM114-C Manuel d'utilisateur

LN-25™PORTABLE CV/CCSEMIAUTOMATIC WIRE FEEDERSafety Depends on YouLincoln arc welding and cutting equip-ment is designed and built with safety inmind.

INSTALLATIONA-4LN-25™A-4c. Place “Set to Same Polarity As Electrode CableConnection” switch at appropriate position.d. Place power source toggl

ELECTRICAL DIAGRAMSG-10¤¤SCHEMATIC - CONTROL PC BD - CODE 10100 THRU 10500 (G2194)G-10NOTE: This diagram is for reference only. It may not be accurate

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

ELECTRICAL DIAGRAMSG-15¤¤SCHEMATIC - CONTACTOR PC BD - ABOVE CODE 10500 (M10965)POWER SUPPLY SOURCE POINTCONTACTORSUP’S’D’G.DIODES =CAPACITORS =GENERA

ELECTRICAL DIAGRAMSG-16¤¤SCHEMATIC - CONTACTOR PC BD - CODE 10100 THRU 10500 (M17621)y( y y )gR i i DS STANDARDThis print is CurrentG-16NOTE: This dia

ELECTRICAL DIAGRAMSG-17¤¤SCHEMATIC - CONTACTOR PC BD - BELOW CODE 9900 (L7535-[ ] CONTACTOR - M15428)G-17NOTE: This diagram is for reference only. It

ELECTRICAL DIAGRAMSG-18¤¤SCHEMATIC - CONTACTOR PC BD - BELOW CODE 9900 (L9185-[ ] CONTACTOR - M17139)y( y y )gG-18NOTE: This diagram is for reference

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

INSTALLATIONA-5LN-25™A-5Install the barbed fitting and union nut to the 5⁄8-18female inert gas fitting on the front panel of the LN-25™ case. Con

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

NOTESA-6A-6LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

TABLE OF CONTENTS- OPERATION SECTION -LN-25™Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATIONB-2B-2LN-25™ELECTRIC SHOCK can kill.• Do not touch electrically livepart or electrode with skin orwet clothing.• Insulate yourself from wo

OPERATIONB-3B-3LN-25™VOLTMETER (Factory installed on model Codes above 9218)The 40V DC analog voltmeter is mounted to the frontcontrol panel of the LN

OPERATIONB-4B-4LN-25™WORK CLIP LEADIMPORTANT SAFETY NOTE: To avoid possibleelectrical shock, do not touch the metal portions ofthe LN-25™ wo

OPERATIONB-5B-5LN-25™g. To remove Readi-Reel®from Adapter, depress re -taining spring tab with thumb while pulling theReadi-Reel®cage from th

OPERATIONB-6B-6LN-25™LOADING WIRE DRIVEa. Turn the reel or spool until the free end of theelectrode is accessible.b. While tightly holding

OPERATIONB-7B-7LN-25™screw in the gearbox conductor block and pull thegun cable forward about six inches. There shouldbe a slight waviness in the expo

SAFETYii iiReturn to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCFOR ENGINEpowered equipment.1.a. Turn the engine off bef

OPERATIONB-8B-8LN-25™Arc Volts UsedDesiredIn/Min 16 18 20 22 24 26 28 30 32 3450 109 97 88 80 73 67 63 58 55 5160 131 117 105 95 88 81 75 70 66

OPERATIONB-9B-9LN-25™ARC RAYS can burn.• Do not touch metal portionsof the LN-25™ lead Clipwhen welding power sourceis on.CYLINDER may explode

OPERATIONB-10B-10LN-25™Do not use LN-25™ models below Code 9200 withany TIG or Square Wave welding power sources. Donot use LN-25™ models equipp

TABLE OF CONTENTS- ACCESSORIES SECTION -LN-25™Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ACCESSORIESC-2C-2Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

ACCESSORIESC-3C-3LN-25™OPTIONAL ACCESSORIESELECTRIC SHOCK can kill.• Do not operate with coversremoved.• Turn off power source beforeinstalli

LN-25™ CONTACTOR KIT (K443-1 FOR CODESBELOW 10500, K443-2 FOR CODES 10500 TO 10558 OR K433-3FOR CODES ABOVE 11144)(Factory installed

ACCESSORIESC-5C-5LN-25™K439 REMOTE EXTENSION CABLEASSEMBLYThe 50 ft. Extension cable assemblies are used to ex -tend the K432 Remote Control Cable

ACCESSORIESC-6C-6LN-25™TO GUN SWITCHCONNECT LEADS TOPINS "A" AND "C"S12024-1 (L.E. PART NO.)AMPHENOL AN3057-10 (OR EQUIV.)S12020-6

TABLE OF CONTENTS- MAINTENANCE SECTION -LN-25™Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SAFETYiiii iiiiReturn to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCFUMES AND GASEScan be dangerous.5.a. Welding may p

MAINTENANCED-2D-2LN-25™ELECTRIC SHOCK can kill.• Do not operate with coversremoved.• Turn off power source beforeinstalling or servicing.• Do

MAINTENANCED-3D-3LN-25™Proper positioning of this module is critical to properoperation of the LN-25™ wire feed speed control. Ifthe device is no

NOTESD-4D-4LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

TABLE OF CONTENTS- THEORY OF OPERATION SECTION -LN-25™Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

THEORY OF OPERATIONE-2E-2LN-25™GENERAL DESCRIPTIONThe LN-25™ is a portable semiautomatic wirefeeder designed to operate from a DC arcvolt

THEORY OF OPERATIONE-3E-3LN-25™FEEDBACK AND CONTROLCIRCUITSThe combination of the range switch and wirespeed control provides a command vol

THEORY OF OPERATIONE-4E-4LN-25™OPTIONAL CIRCUITSCONTACTORThe contactor, contactor PC board, and cold inchswitch are commonly incorporated in t

THEORY OF OPERATIONE-5E-5LN-25™PROTECTIVE DEVICES ANDCIRCUITSOVERVOLTAGE SHUTDOWNIf the power source open circuit voltage exceedsabout 11

NOTESE-6E-6LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

TABLE OF CONTENTS- TROUBLESHOOTING AND REPAIR SECTION -LN-25™Troubleshooting and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SSAAFFEETTYYiiiiii iiiiiiReturn to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCJan ‘07FOR ELECTRICALLYpowered equipment.8

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Maste

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

The wire stops or stubs whilewelding.NOTE:On codes above 10100, themotor leads (541 & 539) arein Control Board ConnectorJ4, pins 13 & 14.FEEDI

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

TROUBLESHOOTING AND REPAIRF-7F-7LN-25™TEST DESCRIPTIONThis test will determine if the gas solenoid valve or the solenoid PC board are functional.MATER

TROUBLESHOOTING AND REPAIRF-8F-8LN-25™TEST PROCEDUREGAS SOLENOID VALVE1. Open the case door. Remove the wire reel byremoving the retaining collar. See

TROUBLESHOOTING AND REPAIRF-9F-9LN-25™3. Locate and remove the two solenoid leads fromthe solenoid valve (For codes 9812 and below,remove the two lead

TROUBLESHOOTING AND REPAIRF-10F-10LN-25™SOLENOID PC BOARD1. Apply at least 25 VDC but no more than 100VDC to the LN-25™ from the electrode cable tothe

TROUBLESHOOTING AND REPAIRF-11F-11LN-25™2. Check for the presence of the DC voltageapplied from lead 624A(+) to lead 621(-). SeeFigure F.43. Check for

SSAAFFEETTYYiivv iivvReturn to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCMar ‘93PRÉCAUTIONS DE SÛRETÉPour votre propre

NOTESF-12F-12LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Re

TROUBLESHOOTING AND REPAIRF-13F-13LN-25™GAS SOLENOID VALVE AND CONTROL PC BOARD TEST(FOR CODES ABOVE 10500 ONLY)WARNINGService and repair should be pe

TROUBLESHOOTING AND REPAIRF-14F-14LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Re

TROUBLESHOOTING AND REPAIRF-15F-15LN-25™3. Locate and remove the two solenoid leads #690and #691 from the solenoid valve. See FigureF.6.4. Make sure t

TROUBLESHOOTING AND REPAIRF-16F-16LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Re

TROUBLESHOOTING AND REPAIRF-17F-17LN-25™690691512500555667621J1J3J4J22. Check for the presence of the DC voltageapplied from plug J1 pin 1 (667+) to p

NOTESF-18F-18LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Re

TROUBLESHOOTING AND REPAIRF-19F-19LN-25™HALL EFFECT MODULE TESTTEST DESCRIPTIONThis test will determine if the hall effect module is functioning corre

TROUBLESHOOTING AND REPAIRF-20F-20LN-25™TEST PROCEDURE1. Open the case door. Remove the wire reel byremoving the retaining collar. See Figure F.5.2. R

TROUBLESHOOTING AND REPAIRF-21F-21LN-25™4. Apply at least 25 VDC but no more than 100VDC to the LN-25™ from the electrode cable tothe work sensing lea

vvLN-25™MASTER TABLE OF CONTENTS FOR ALL SECTIONSPageSafety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NOTESF-22F-22LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Re

TROUBLESHOOTING AND REPAIRF-23F-23LN-25™WIRE DRIVE MOTOR TESTTEST DESCRIPTIONThe following procedure will determine if the wire drive motor is functio

TROUBLESHOOTING AND REPAIRF-24F-24LN-25™TEST PROCEDURE1. Open the case door. Remove the wire reel byremoving the retaining collar. See Figure F.5.2. R

TROUBLESHOOTING AND REPAIRF-25F-25LN-25™CONTACTOR & CONTACTOR PC BOARD TESTTEST DESCRIPTIONThe following test will determine if the contactor is f

TROUBLESHOOTING AND REPAIRF-26F-26LN-25™CONTACTOR TEST PROCEDURE1. Open the case door. Remove the wire reel byremoving the retaining collar. See Figur

TROUBLESHOOTING AND REPAIRF-27F-27LN-25™4. Apply 12 VDC to the contactor coil leads.Do not leave the 12 VDC applied to the contactorcoil for a prolong

TROUBLESHOOTING AND REPAIRF-28F-28LN-25™CONTACTOR PC BOARD TEST1. Check to be sure plug J9, on contactor boardand plug J3, on the control board are pr

TROUBLESHOOTING AND REPAIRF-29F-29LN-25™TP1R65D49R81R43R49C40DZ10Q7R60D32C5R110D37R115X4R37R2C22R14C31R117R16X5R52R113T1R4R88D8Q10DZ15D18D16C26R71R35C

NOTESF-30F-30LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Re

TROUBLESHOOTING AND REPAIRF-31F-31LN-25™CONTACTOR PC BOARD REPLACEMENTTOOLS REQUIREDPhillips Head ScrewdriverReturn to Section TOC Return to Section T

TABLE OF CONTENTS- INSTALLATION SECTION -LN-25™Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TROUBLESHOOTING AND REPAIRF-32F-32LN-25™REPAIR PROCEDURE1. Observe the static electr icity precautionsdetailed in PC Board TroubleshootingProcedures a

TROUBLESHOOTING AND REPAIRF-33F-33LN-25™5. For codes 9812 and below, remove thecontactor coil leads and plug J7 from thecontactor PC board. See Figure

6. Remove the four screws from the front panelholding the contactor PC board assembly inplace. Carefully remove the contactor PC boardassembly. See Fi

TROUBLESHOOTING AND REPAIRF-35F-35LN-25™CONTROL PC BOARD REPLACEMENTTOOLS REQUIREDPhillips Head ScrewdriverReturn to Section TOC Return to Section TOC

TROUBLESHOOTING AND REPAIRF-36F-36LN-25™REPAIR PROCEDURE1. Observe the static electr icity precautionsdetailed in PC Board TroubleshootingProcedures a

TROUBLESHOOTING AND REPAIRF-37F-37LN-25™TP1R65D49R81R43R49C40DZ10Q7R60D32C5R110D37R115X4R37R2C22R14C31R117R16X5R52R113T1R4R88D8Q10DZ15D18D16C26R71R35C

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

TROUBLESHOOTING AND REPAIRF-39F-39LN-25™TOOLS REQUIREDPhillips Head Screwdriver5/16" Nut Driver11/16" WrenchService and repair should be per

TROUBLESHOOTING AND REPAIRF-40F-40LN-25™REPAIR PROCEDURE1. Open the case door. Remove the wire reel byremoving the retaining collar. See Figure F.5.2.

Service and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs performed on this equipment may result

INSTALLATIONA-2LN-25™A-2Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master T

F-42TROUBLESHOOTING AND REPAIRF-42LN-25™CONTACTOR REPLACEMENT(continued)WORK SENSING LEADPOLARITYSWITCHELECTRODECABLEVOLTAGE SENSINGLEAD #67WELDING CA

TROUBLESHOOTING AND REPAIRF-43F-43LN-25™GAS SOLENOID VALVE AND/OR SOLENOID PCBOARD (IF PRESENT) REPLACEMENTTOOLS REQUIREDPhillips Head Screwdriver3/4&

TROUBLESHOOTING AND REPAIRF-44F-44LN-25™REPAIR PROCEDURE1. Open the case door. Remove the wire reel byremoving the retaining collar. See Figure F.5.2.

TROUBLESHOOTING AND REPAIRF-45F-45LN-25™4c. Remove the gas hose from the solenoid nipple.4d. Using the 3/8” nut driver, remove the purgebutton nut fro

5. For codes 9812 and below, remove the twosolenoid leads from the solenoid PC board anddisconnect the purge switch leads. See FigureF.31. Also, remov

TROUBLESHOOTING AND REPAIRF-47F-47LN-25™DRIVE MOTOR AND GEARBOX REPLACEMENT ANDACCESS TO HALL EFFECT MODULETOOLS REQUIREDPhillips Head Screwdriver3/4&

TROUBLESHOOTING AND REPAIRF-48F-48LN-25™REPAIR PROCEDURE1. Observe the static electricity precautionsdetailed in PC Board TroubleshootingProcedures at

TROUBLESHOOTING AND REPAIRF-49F-49LN-25™7. Remove the two screws and lock washersholding the rear end plate to the gearbox andremove the rear end plat

TROUBLESHOOTING AND REPAIRF-50F-50LN-25™DRIVE MOTOR AND GEARBOX REPLACEMENT AND ACCESS TOHALL EFFECT MODULE (continued)FIGURE F.34. – DRIVE MOTOR REPL

TROUBLESHOOTING AND REPAIRF-51F-51LN-25™RETEST AFTER REPAIRIf a failed test indicates that any mechanical part thatcould affect the machine’s electric

INSTALLATIONA-3LN-25™A-3ELECTRIC SHOCK can kill.• Do not operate with coversremoved.• Turn off power source beforeinstalling or servicing.• Do not tou

NOTESF-52F-52LN-25™Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Re

LN-25™G-1ELECTRICAL DIAGRAMSG-1TABLE OF CONTENTS-ELECTRICAL DIAGRAMS SECTION-ELECTRICAL DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL DIAGRAMSG-2¤¤WIRING DIAGRAM - ABOVE CODE 11140 (G4679)530A512606607530500HILO523B522VMARCVOLTMETER+66762163263363110KR1WIRE SPEEDCONTROLRHE

ELECTRICAL DIAGRAMSG-3¤¤WIRING DIAGRAM - CODE 10556 THRU 10500 (L10925)G-3NOTE: This diagram is for reference only. It may not be accurate for all mac

ELECTRICAL DIAGRAMSG-4¤¤WIRING DIAGRAM - CODE 10100 THRU 10500 (L9644)G-4NOTE: This diagram is for reference only. It may not be accurate for all mach

ELECTRICAL DIAGRAMSG-5¤¤WIRING DIAGRAM - BELOW CODE 9900 (L7545)G-5NOTE: This diagram is for reference only. It may not be accurate for all machines c

ELECTRICAL DIAGRAMSG-6¤¤SCHEMATIC - COMPLETE MACHINE - CODES ABOVE 11140 (G5366)EN-170G5366LN-25 (ACROSS THE ARC)MACHINE SCHEMATICNONEG4198-1M. DIDION

ELECTRICAL DIAGRAMSG-7¤¤SCHEMATIC - COMPLETE MACHINE - BELOW CODE 9900 ONLY (G1833)G-7NOTE: This diagram is for reference only. It may not be accurate

ELECTRICAL DIAGRAMSG-8¤¤SCHEMATIC - CONTROL PC BD - ABOVE CODE 11140 (G4616-5)G-8NOTE: This diagram is for reference only. It may not be accurate for

ELECTRICAL DIAGRAMSG-9¤¤SCHEMATIC - CONTROL PC BD - CODE 10556 THRU 10558 (G3424-3)G-9NOTE: This diagram is for reference only. It may not be accurate