Lincoln Electric LN-25 IM10092 manual

OPERA T ORʼS 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 • World's Leader in Welding and Cutting Products • Copyright © Lincoln Global Inc. LN-25 ™ PIPE IM10092 April, 2011 For use with machin[...]

FOR ENGINE powered 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 exhaust fumes outdoors. ________________________________________________[...]

ii SAFETY ii ARC R A Y S can bur n. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87. I standards. 4.b. Use suitable clothing made from durable flame-resistant material to protect your s[...]

iii SAFETY iii FOR ELECTRIC ALL Y pow ered equipment. 8.a. Turn off input power using the disconnect switch at the fuse box before working on the equipment. 8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturer’s recommendations. 8.c. Ground the equipment in accordance with the U.S. Nati[...]

iv SAFETY iv 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. Protegez-vous contre la secousse électrique: a. Les circuits à[...]

v v SAFETY Electromagnetic Compatibility (EMC) Conformance Products displaying the CE mark are in conformity with European Community Council Directive of 15 Dec 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility, 2004/108/EC. It was manufactured in conformity with a national standard that implements[...]

SAFETY vi vi Electromagnetic Compatibility (EMC) The size of the surrounding area to be considered will depend on the structure of the building and other activities that are taking place. The surrounding area may extend beyond the boundaries of the premises. Methods of Reducing Emissions Mains Supply Welding equipment should be connected to the mai[...]

vii vii Thank Y ou for selecting a QUALITY product by Lincoln Electric. We want you to take pride in operating this Lincoln Electric Company product ••• as much pride as we have in bringing this product to you! Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it handy for quick reference[...]

viii viii T ABLE OF CONTENTS Page –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Installation ..............................................................[...]

A-1 INST ALLA TION A-1 LN-25™ PIPE TEMPERA TURE RANGE OPERATION: -40°F to 104°F (-40°C to 40°C) STORAGE: -40°F to 185°F (-40°C to 85°C) INPUT VOL T AGE and CURRENT TECHNICAL SPECIFICA TIONS – LN-25™ PIPE (K2614-10) HEIGHT WIDTH DEPTH WEIGHT 14.8 Inches 8.7 Inches 22.2 Inches 41 lbs (376 mm) ( 221 mm) (589 mm) (18.6 kg) Handle folded d[...]

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 to work and back to the welder again. Cable sizes are increased for greater lengths primarily for the purpose of minimizing cable drop. ** Tabled values are for operation at ambient[...]

A-3 INST ALLA TION LN-25™ PIPE A-3 SHIELDING GAS CONNECTION CYLINDER may explode if 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 cylinder away from welding or other li[...]

A-4 INST ALLA TION LN-25™ PIPE A-4 WIRE DRIVE CONFIGURA TION (See Figure A.2) CHANGING THE GUN RECEIVER BUSHING ELECTRIC SHOCK can kill. • Turn the input power OFF at the welding power source before instal- lation or changing drive rolls and/or guides. • Do not touch electrically live parts. • When inching with the gun trigger, electrode an[...]

THUMB SCREW GUN A-5 INST ALLA TION LN-25™ PIPE A-5 PRESSURE ARM ADJUSTMENT ELECTRIC SHOCK can kill. • Turn the input power OFF at the weld- ing power source before installation or changing drive rolls and/or guides. • Do not touch electrically live parts. • When inching with the gun trigger, electrode and drive mechanism are "hot"[...]

CV Power Sources with Stud Connectors and no Remote/Local Switch. (See Figure A.7) Place CV/CC switch in the feeder in the "CV" position. Work clip Work Electrode Jumper Ranger 250, 250 LPG Ranger 305G, 305D Ranger 10,000 Ranger 3 Phase Ranger 225GXT Ranger 225 Commander 300 V antage 300, 400, 500 Air V antage 500 LN-25™ PIPE FIGURE A.7[...]

A-7 INST ALLA TION LN-25™ PIPE A-7 CV Power Source with Twist-Mate Connectors and Remote/Local Switch. (See Figure A.8) Place CV/CC switch in the feeder in the "CV" position. Work clip Wor k Electrode CV -305 V350-Pro LN-25™ PIPE FIGURE A.8 K# K2614-10 KP1695-XX KP1696-XX KP1697-XX See Magnum Literature K1841 Description LN-25™ PIPE[...]

A-8 INST ALLA TION LN-25™ PIPE A-8 ELECTRODE CONNECTION The LN-25™ PIPE (CCC) does not include the elec- trode cable. The customer is to install an AWG 2/0 to 4/0 cable. To install: 1. Turn off power at the welding power source. 2. With a 5/16” nut driver, remove the 4 screws hold- ing the rear cover panel. Lift out the cover panel. 3. Using [...]

B-1 OPERA TION LN-25™ PIPE B-1 • 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 and could remain energized several sec- onds after the welding ceases.. • Do not touch electrically live part or electrode with skin or wet clothing.[...]

B-2 OPERA TION B-2 LN-25™ PIPE 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 LN-25™ PIPE is specially engineered to be the most rugged portab[...]

WIRE FEED SPEED KNOB Wire Feed Speed, CV Operation When Across the Arc models are operated with CV power sources, the wire feed speed will remain a con- stant value, independent of arc voltage changes, as along as the arc voltage does not drop below the val- ues per the following table. 83% Wire Feed Speed The 83% wire feed speed reduces the wire f[...]

B-4 OPERA TION B-4 LN-25™ PIPE POWER-UP SEQUENCE All of the LEDʼs will briefly illuminate during power-up. If the gun trigger is activated during power up, the feeder will not operate until the gun trigger is released. WIRE FEED SPEED/AMPERAGE DISPLA Y Idle The left display shows the preset wire feed speed . The right display shows OCV . The wir[...]

B-5 OPERA TION B-5 LN-25™ PIPE WIRE FEED SPEED UNITS To change the wire feed speed units: Rotate the WFS knob to the left to use “inches/minute” for the wire feed speed units. Rotate the WFS knob to the right to use “meters/minute” for the wire feed speed units. Then rotate the WFS knob to the 12 oʼclock position. Press the set-up button[...]

B-6 OPERA TION B-6 LEFT DISPLA Y SELECTION The left display can show either amperage or actual WFS during welding. Note that actual WFS is not the same as preset WFS. For example, the preset WFS may be set to 400 ipm, but the arc voltage is only 15V. The actual WFS will be approximately 280 ipm because there is not enough arc voltage to run at 400 [...]

B-7 OPERA TION B-7 INTERNAL CONTROLS LN-25™ PIPE 12 Step Trigger Interlock Switch 2 Pressure Adjustment Arm 3 Optional Timer Kit (See Accessories Section) 4 Spool Retainer 5 Spindle Brake 6 Gun Bushing ITEM DESCRIPTION 1 9 8 7 6 3 2 7 Thumb Screw for securing the welding Gun 8 Socket Head Cap Screw for securing the Gun Bushing 4 5 9 Drive Hubs 11[...]

B-8 OPERA TION B-8 INTERNAL CONTROLS DESCRIPTION (See Figure B.2) 2 Step - Trigger Interlock Switch The 2 Step - Trigger Interlock switch changes the function of the gun trigger. 2 Step trigger opera- tion turns welding on and off in direct response to the trigger. Trigger Interlock operation allows welding to continue when the trig- ger is release[...]

GAS PURGE PUSHBUTTON The gas solenoid valve will energize but neither the power source output nor the drive motor will be turned on. The Gas Purge switch is useful for setting the proper flow rate of shielding gas. Flow meters should always be adjusted while the shielding gas is flowing. B-9 OPERA TION B-9 REAR CONTROLS: LN-25™ PIPE 1 Gas Purge P[...]

C-1 ACCESSORIES C-1 LN-25™ PIPE F ACTOR Y INST ALLED EQUIPMENT • K1500-2 Gun Receiver Bushing. DRIVE ROLL KITS (See Parts Pages) K1803-1 K1840-xx K1842-xx Work and Feeder Cables Package. Weld Power Cable, Twist-Mate to Lug. Weld Power Cable, Lug to Lug. Includes: Twist-Mate to Lug 2/0 cable 14' (1.2m) long with Ground Clamp, and Twist- Mat[...]

C-2 ACCESSORIES C-2 LN-25™ PIPE K910-1 K910-2 K1500-1 K1500-2 K1500-3 Ground Clamp Ground Clamp Gun Receiver Bushing (for guns with K466-1 Lincoln gun connec- tors; Innershield and Subarc guns) Gun Receiver Bushing (for guns with K466-2, K466-10 Lincoln gun connectors; Magnum 200/300/400 guns and compatible with Tweco® #2-#4) Gun Receiver Bushin[...]

C-3 ACCESSORIES C-3 LN-25™ PIPE K1500-4 K1500-5 K435 K468 K590-6 K586-1 K283 Gun Receiver Bushing (for gun with K466-3 Lincoln gun connec- tors; compatible with Miller® guns.) Gun Receiver Bushing (compatible with Oxo® guns.) Spindle Adapter, for mounting 14 lb. (6.4 kg) Innershield Coils on 2 in (51 mm) spindles. Spindle Adapter, for mounting [...]

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. • When inching with the gun trigger, electrode and drive mechanism are "hot" to work and ground and could remain energized several seconds after the gun tr[...]

E-1 TROUBLESHOOTING E-1 LN-25™ PIPE 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 Troubleshooting Guide is provided to help you locate and repair po[...]

E-2 TROUBLESHOOTING E-2 LN-25™ PIPE 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 Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed. CAUTION PROBLEMS [...]

E-3 TROUBLESHOOTING E-3 LN-25™ PIPE 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 Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed. CAUTION PROBLEMS [...]

E-4 TROUBLESHOOTING E-4 LN-25™ PIPE 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 Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed. CAUTION PROBLEMS [...]

F-1 DIAGRAMS F-1 LN-25™ PIPE NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted inside the machine on one of the enclosure panels. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code numbe[...]

F-2 DIMENSION PRINT F-2 LN-25™ PIPE[...]

W ARNING A VISO DE PREC A UCION A TTENTION W ARNUNG A TENÇÃO Spanish French German Portuguese Japanese Chinese Korean Arabic READ AND UNDERST AND THE MANUF A CTURER’S INSTR UCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BE USED AND FOLL O W Y OUR EMPL O YER’S SAFETY PRA CTICES. SE RECOMIEND A LEER Y ENTENDER LA S INS TRUCCIONES DEL F ABRIC [...]

W ARNING A VISO DE PREC A UCION A TTENTION W ARNUNG A TENÇÃO Spanish French German Portuguese Japanese Chinese Korean Arabic LEIA E COMPREEND A A S INSTR UÇÕES DO F ABRIC ANTE P ARA ES TE EQUIP AMENT O E AS P ARTES DE USO , E SIG A AS PRÁTIC A S DE SEGUR ANÇA DO EMPREG ADOR. • Keep your head out of fumes. • Use ventilation or exhaust to r[...]

• 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 • World's Leader in Welding and Cutting Products •[...]