Lincoln-electric IM10031 LN-25 PRO User Manual

OPERATORʼS MANUAL• Sales and Service through Subsidiaries and Distributors Worldwide •Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 21

A-1INSTALLATION A-1LN-25™ PROTEMPERATURE RANGEOPERATION: -40°F to 104°F (-40°C to 40°C)STORAGE: -40°F to 185°F (-40°C to 85°C)INPUT VOLTAGE and CUR

WELD CABLE SIZETable A.1 located below are copper cable sizes rec-ommended for different currents and duty cycles.Lengths stipulated are the distance

A-3INSTALLATION LN-25 PRO A-3AABBKKHHNNLLCCDDMMGGFFEEJJIIFunctionunusedChassis GNDWelding Output Control (trigger from feeder)Welding Output Control

A-4INSTALLATION LN-25™ PROA-4SHIELDING GAS CONNECTIONCYLINDER may explode ifdamaged.• Keep cylinder upright andchained to support.• Keep cylinder a

A-5INSTALLATION LN-25™ PROA-5WIRE DRIVE CONFIGURATION(See Figure A.2)CHANGING THE GUN RECEIVERBUSHINGELECTRIC SHOCK can kill.• Turn the input power

THUMBSCREWGUNA-6INSTALLATION LN-25™ PROA-6PRESSURE ARM ADJUSTMENTELECTRIC SHOCK can kill.• Turn the input power OFF at the weld-ing power source be

A-7INSTALLATION LN-25™ PROA-7ACROSS THE ARC SET-UPSCC Power Sources with Output Terminals AlwaysHot (See Figure A.5)If the power source has a Remote

A-8INSTALLATION LN-25™ PROA-8CV Power Sources with Stud Connectors and noRemote/Local Switch. (See Figure A.7)Place CV/CC switch in the feeder in th

A-9INSTALLATION LN-25™ PROA-9CV Power Source with Twist-Mate Connectors andno Remote/Local Switch. (See Figure A.9)Place CV/CC switch in the feeder

B-1OPERATIONLN-25™ PROB-1• ELECTRIC SHOCK CAN KILL.Unless using COLD FEED fea-ture, when feeding with gun trig-ger, the electrode and drivemechanism a

FOR ENGINEpowered equipment.1.a. Turn the engine off before troubleshooting and maintenancework unless the maintenance work requires it to be running.

B-2OPERATIONB-2LN-25™ PRODEFINITION OF WELDING TERMSWFS• Wire Feed SpeedCC• Constant CurrentCV• Constant VoltageGMAW• Gas Metal Arc weldingSMAW• Shiel

B-3OPERATIONB-31. ANALOG VOLTMETERThe analog voltmeter shows the voltage betweenelectrode and work. On across the arc models, thevoltmeter shows open

Maximum WFSStandard SpinGearing280340440520600Maximum WFS(Extra TorqueGearing)210235400400400Minimum Arc Volts15 V17 V21 V24 V27 VB-4OPERATIONB-42. WI

B-5OPERATIONB-5LN-25™ PRO3. 5-PIN GUN TRIGGER CONNECTOR4. WORK SENSE LEAD5. THERMAL LED, MOTOR OVERLOADThe thermal light illuminates when thewire driv

B-6OPERATIONB-6INTERNAL CONTROLSLN-25™ PRO1 2 Step Trigger Interlock Switch2 CV / CC Switch3 Pressure Adjustment Arm4 Optional Timer Kit (See Acce

B-7OPERATIONB-7INTERNAL CONTROLS DESCRIPTION(See Figure B.2)2 Step - Trigger Interlock SwitchThe 2 Step - Trigger Interlockswitch changes the function

B-8OPERATIONB-8LN-25™ PROCONSTANT CURRENT WIRE WELDING (See Figure B.3)Most semiautomatic welding processes perform betterusing constant voltage power

B-9OPERATIONB-9REAR CONTROLS:LN-25™ PRO1 Gas Purge Pushbutton2 Flow Meter Ball4 Shielding Gas Inlet3 Flow Meter Valve6 Optional Water cooled gun conne

B-10OPERATIONB-10GAS PURGE PUSHBUTTONThe gas solenoid valve will energize but neither thepower source output nor the drive motor will be turnedon. Th

C-1ACCESSORIESC-1LN-25™ PROWIRE TYPESteel Wires:Cored Wires:Aluminum Wires:ELECTRODE SIZE.023-.030 (0.6-0.8mm).035 (0.9mm).045 (1.2mm).052 (1.4mm)1/16

iiSAFETYiiARC RAYS can burn.4.a. Use a shield with the proper filter and coverplates to protect your eyes from sparks andthe rays of the arc when weld

C-2ACCESSORIESC-2LN-25™ PROK1796-xxK2593-xxK1803-1K1840-xxK1842-xxAWG 1/0 Co-Axial Power CableAWG #1 Coaxial Power Cable Work and Feeder Cables Packag

C-3ACCESSORIESC-3LN-25™ PROK910-1K910-2K1500-1K1500-2K1500-3Ground ClampGround ClampGun Receiver Bushing (for gunswith K466-1 Lincoln gun connec-tors;

C-4ACCESSORIESC-4LN-25™ PROK1500-4K1500-5K489-7K435K468K590-6K586-1Gun Receiver Bushing (for gunwith K466-3 Lincoln gun connec-tors; compatible with M

C-5ACCESSORIESC-5LN-25™ PROINSTALLATION OF THE K590-6 WATERCOOLING KITELECTRIC SHOCK can kill.• Turn the input power OFF at the dis-connect switch bef

ELECTRIC SHOCK can kill.• Turn the input power OFF at thewelding power source beforeinstallation or changing driverolls and/or guides.•Do not touch el

D-2MAINTENANCED-2The LN-25™ PRO flow meter cannot be calibrated. Ifthe flow meter reads incorrectly, check for leaks orkinks in the gas hose. Repla

E-1TROUBLESHOOTINGE-1LN-25™ PROIf for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact

E-2TROUBLESHOOTINGE-2LN-25™ PROObserve all Safety Guidelines detailed throughout this manualIf for any reason you do not understand the test procedure

E-3TROUBLESHOOTINGE-3LN-25™ PROObserve all Safety Guidelines detailed throughout this manualIf for any reason you do not understand the test procedure

F-1DIAGRAMSF-1LN-25™ PRONOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific dia

iiiSAFETYiiiFOR ELECTRICALLYpowered equipment.8.a. Turn off input power using the disconnectswitch at the fuse box before working onthe equipment.8.b.

F-2DIMENSION PRINTF-2LN-25™ PRO17.198.6516” CIRCLE12” x 18” ELLIPSE23.1714.8117.198.6516” CIRCLE12” x 18” ELLIPSE23.1714.81

WARNINGAVISO DEPRECAUCIONATTENTIONWARNUNGATENÇÃOSpanishFrenchGermanPortugueseJapaneseChineseKoreanArabicREAD AND UNDERSTAND THE MANUFACTURER’S INSTRUC

WARNINGAVISO DEPRECAUCIONATTENTIONWARNUNGATENÇÃOSpanishFrenchGermanPortugueseJapaneseChineseKoreanArabicLEIA E COMPREENDA AS INSTRUÇÕES DO FABRICANTE

• Sales and Service through Subsidiaries and Distributors Worldwide •Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB 

ivSAFETYivPRÉCAUTIONS DE SÛRETÉPour votre propre protection lire et observer toutes les instructionset les précautions de sûreté specifiques qui parra

vSAFETYvElectromagnetic Compatibility (EMC)ConformanceProducts displaying the CE mark are in conformity with European Community Council Directive of 1

viSAFETYviElectromagnetic Compatibility (EMC)The size of the surrounding area to be considered will depend on the structure of the building and othera

viiviiThank Youfor selecting a QUALITY product by Lincoln Electric. We want youto take pride in operating this Lincoln Electric Company product••• as

viiiviii TABLE OF CONTENTSPage––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––Installation.......