Page 2 - SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS; The Above For Diesel Engines
LN-25 PRO EXTREME FOR ENGINEpowered equipment. 1.a. Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated areas or vent the engine exhau...
Page 3 - ii
LN-25 PRO EXTREME ii SAFETY ii ARC RAYS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks andthe rays of the arc when welding or observingopen arc welding. Headshield and filter lensshould conform to ANSI Z87. I standards. 4.b. Use suitable clothing...
Page 4 - iii
FOR ELECTRICALLYpowered equipment. 8.a. Turn off input power using the disconnect switch at the fuse box before working onthe equipment. 8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturerʼsrecommendations. 8.c. Ground the equipment in ac...
Page 5 - iv; PRÉCAUTIONS DE SÛRETÉ
iv SAFETY iv LN-25 PRO EXTREME Mar. ʻ93 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 LʼArc 1. P...
Page 6 - Thank You; Please Examine Carton and Equipment For Damage Immediately
v v Thank You for selecting a QUALITY product. We want you to take pride in operating this product ••• as much pride as we have in bringingthis product to you! Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it handy for quick reference. Pay p...
Page 7 - vi; TABLE OF CONTENTS
vi vi TABLE OF CONTENTS Page –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Installation .......................................................................................................................Section A Technical Specifications ..........................
Page 8 - INSTALLATION; TEMPERATURE RANGE; PHYSICAL DIMENSIONS; GMAW
A-1 INSTALLATION A-1 TEMPERATURE RANGE OPERATION: -40°F to 104°F (-40°C to 40°C) STORAGE: -40°F to 185°F (-40°C to 85°C) INPUT VOLTAGE and CURRENT TECHNICAL SPECIFICATIONS – LN25 PRO (K2613-3) HEIGHT WIDTH DEPTH WEIGHT 14.8 Inches 8.7 Inches 22.2 Inches 36 lbs (376 mm) ( 221 mm) (589 mm) (16 kg) Han...
Page 9 - WELD CABLE SIZE; SAFETY PRECAUTIONS
WELD CABLE SIZE Table A.1 located below are copper cable sizes rec-ommended for different currents and duty cycles.Lengths stipulated are the distance from the welder towork and back to the welder again. Cable sizes areincreased for greater lengths primarily for the purposeof minimizing cable drop. ...
Page 10 - SHIELDING GAS CONNECTION; CABLE CONNECTIONS
A-3 INSTALLATION A-3 SHIELDING GAS CONNECTION C Y L I N D E R m a y e x p l o d e i f damaged. • Keep cylinder upright and chained to support. • Keep cylinder away from areas where it may be damaged. • Never lift welder with cylinder attached.• Never allow welding electrode to touch cylinder.• Keep ...
Page 11 - WIRE DRIVE CONFIGURATION
A-4 INSTALLATION A-4 WIRE DRIVE CONFIGURATION (See Figure A.2) C H A N G I N G T H E G U N R E C E I V E RBUSHING ELECTRIC SHOCK can kill. • T u r n t h e i n p u t p o w e r O F F a t t h e welding power source before instal-lation or changing drive rolls and/orguides. • Do not touch electrically l...
Page 12 - PRESSURE ARM ADJUSTMENT
THUMB SCREW GUN A-5 INSTALLATION A-5 PRESSURE ARM ADJUSTMENT ELECTRIC SHOCK can kill. • Turn the input power OFF at the weld- ing power source before installation orchanging drive rolls and/or guides. • Do not touch electrically live parts. • When inching with the gun trigger, electrode a n d d r i ...
Page 13 - ACROSS THE ARC SET-UPS; Power Sources with Stud Connectors and
A-6 INSTALLATION A-6 ACROSS THE ARC SET-UPS CC Power Sources with Output Terminals AlwaysHot (See Figure A.5) If the power source has a Remote/Local switch, placethe switch in the Local position. Place the CV/CC switch in the feeder in the "CC" posi-tion. LN-25 PRO EXTREME CV Power Sources w...
Page 14 - Description
A-7 INSTALLATION A-7 CV Power Sources with Stud Connectors and noRemote/Local Switch. (See Figure A.7) Place CV/CC switch in the feeder in the "CV" position. CV Power Source with Twist-Mate Connectors andRemote/Local Switch. (See Figure A.8) Place CV/CC switch in the feeder in the "CV...
Page 16 - OPERATION
B-1 OPERATION B-1 LN-25 PRO EXTREME • E L E C T R I C S H O C K C A N K I L L . Unless using COLD FEED fea-ture, when feeding with gun trig-g e r , t h e e l e c t r o d e a n d d r i v emechanism are always electri-c a l l y e n e r g i z e d a n d c o u l dremain energized several sec-onds after t...
Page 17 - DEFINITION OF WELDING TERMS; GENERAL DESCRIPTION; RECOMMENDED PROCESSES
B-2 OPERATION B-2 LN-25 PRO EXTREME DEFINITION OF WELDING TERMS WFS • Wire Feed Speed CC • Constant Current CV • Constant Voltage GMAW • Gas Metal Arc welding SMAW • Shielded Metal Arc welding FCAW • Flux Core Arc Welding GENERAL DESCRIPTION General Physical Description The LN25 PRO EXTREME is speci...
Page 18 - Customer Assistance Policy; CASE FRONT CONTROLS; ITEM DESCRIPTION
B-3 OPERATION B-3 1. ANALOG VOLTMETER The analog voltmeter shows the voltage betweenelectrode and work. On across the arc models, thevoltmeter shows open circuit voltage when the wirefeeder is not welding. The voltmeter is polarityinsensitive and the range is 0 – 40VDC. (See Customer Assistance Poli...
Page 19 - WIRE FEED SPEED KNOB
B-4 OPERATION B-4 2. WIRE FEED SPEED KNOB The large, calibrated wire feed speed knob makesfor easy and accurate adjustment of the wire feedspeed. The knob rotates 3/4 turn. Turn the knobclockwise to increase the wire feed speed, andcounter clockwise to reduce the wire feed speed. Models with analog ...
Page 21 - INTERNAL CONTROLS
B-6 OPERATION B-6 INTERNAL CONTROLS LN-25 PRO EXTREME FIGURE B.2
Page 22 - COLD FEED PUSHBUTTON
B-7 OPERATION B-7 CV/CC SWITCH (See Figure B.2) The CV/CC switch sets the wirefeed speed control method for thewire feeder. In the CV position, the wire feeds p e e d r e m a i n s c o n s t a n t d u r i n gwelding. A steady arc voltage isregulated by the power source byadjusting the arc current. I...
Page 23 - CONSTANT CURRENT WIRE WELDING; NOT; Con sta nt Current
B-8 OPERATION B-8 CONSTANT CURRENT WIRE WELDING (See Figure B.3) Most semiautomatic welding processes perform betterusing constant voltage power sources. Welding codes usually do not address the powersource selection or specifically, whether the weldingprocess is to be operated in the constant volta...
Page 24 - GAS PURGE PUSHBUTTON
GAS PURGE PUSHBUTTON The gas solenoid valve will energize but neither thepower source output nor the drive motor will be turnedon. The Gas Purge switch is useful for setting theproper flow rate of shielding gas. Flow meters shouldalways be adjusted while the shielding gas is flowing. POWER-UP SEQUEN...
Page 25 - ACCESSORIES; WIRE TYPE; FACTORY INSTALLED EQUIPMENT
C-1 ACCESSORIES C-1 LN-25 PRO EXTREME WIRE TYPE Steel Wires: Cored Wires: Aluminum Wires: ELECTRODE SIZE .023-.030 (0.6-0.8mm) .035 (0.9mm).045 (1.2mm).052 (1.4mm)1/16 (1.6mm) .035,.045 (0.9, 1.2mm) .040 (1.0mm) .030-.035" (0.8-0.9mm).040-.045" (1.0-1.2mm) .052" (1.4mm)1/16" (1.6mm) ...
Page 29 - MAINTENANCE; ROUTINE MAINTENANCE
D-1 MAINTENANCE D-1 LN-25 PRO EXTREME ELECTRIC SHOCK can kill. • D o n o t o p e r a t e w i t h c o v e r s removed. • T u r n o f f p o w e r s o u r c e b e f o r e installing or servicing. • D o n o t t o u c h e l e c t r i c a l l y h o t parts. • T u r n t h e i n p u t p o w e r t o t h e w ...
Page 30 - Wire Feed Speed Validation; COVER
D-2 MAINTENANCE D-2 Wire Feed Speed Validation (See Figure D.1)Calibration of the LN25 PRO EXTREME may be requiredwhen the p.c. board, wire feed speed potentiometer ormotor is replaced or serviced. Calibration matches thescale on the name plate to the actual wire feed speed. Tools required: • RPM me...
Page 31 - TROUBLESHOOTING; Local Lincoln Authorized Field Service Facility; CAUTION; HOW TO USE TROUBLESHOOTING GUIDE; ELECTRIC SHOCK can kill.; Code or any applicable local codes.
E-1 TROUBLESHOOTING E-1 LN-25 PRO EXTREME If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed. CAUTION This Troubleshoot...
Page 32 - Local Authorized Field Service Facility; PROBLEMS; Fault Code
E-2 TROUBLESHOOTING E-2 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Authorized Field Service Facility for technical troubleshooting assistance before yo...
Page 33 - Output Problems
E-3 TROUBLESHOOTING E-3 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Authorized Field Service Facility for technical troubleshooting assistance before yo...
Page 35 - DIAGRAMS
F-1 DIAGRAMS F-1 LN-25 PRO EXTREME NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diag ram for a particular code is pasted inside the machine on one of the enclosure panels. If the diagram is illegible, write to the Service Depa...
Page 37 - DIMENSION PRINT
F-3 DIMENSION PRINT F-3 LN-25 PRO EXTREME 23.1 7 14.8 1 16" CIRC LE 12" x 18 " EL LIP SE 8.65 17.1 9
Page 38 - NOTES