Lincoln-electric IM10076 LN-25 PRO User Manual

Operator’s ManualLN-25 ™ PRORegister your machine: www.lincolnelectric.com/registerAuthorized Service and Distributor Locator: www.lincolnelectric.c

!&+,$$,!'&$&S(*',%(*,-**&'(*,!'& -40°F to 104°F (-40°C to 40°C)+,'* -40°F t

/$$+!1Table A.1 located below are copper cable sizes rec-ommended for different currents and duty cycles.Lengths stipulated are

!&+,$$,!'&$&S(*'+ !$!&+'&&,!'&0$!&*?3K 7JB>A67;863?3976R #77B5

GUN RECEIVER BUSHINGLOOSEN TIGHTENTHUMB SCREWOUTER WIRE GUIDESOCKET HEADCAP SCREWCONNECTOR BLOCK!-*/!**!.'&!-*,!'&

$'!&+(''$+'/!*R#77B:3@6E:3;D5>AF:;@93@6FAA>E3I3K8DA?DAF3F;@97CG;B?7@FRA@AFI73D9>AH7EI:7@F:

THUMBSCREWGUN!&+,$$,!'&$&S(*'-&'&&,!'&$,*!+ '#53@=;>>R,GD@F

!&+,$$,!'&$&S(*'*'++, *+,-(+(AI7D+AGD57EI;F:'GFBGF,7D?;@3>E>I3KE AF+77;9GD

!&+,$$,!'&$&S(*'.(AI7D +AGD57E I;F: +FG6 A@@75FADE3@6 @A*7?AF7$A53>+I;F5:+77;9GD7Place CV

!&+,$$,!'&$&S(*'.(AI7D+AGD57I;F:,I;EF%3F7A@@75FADE3@6@A*7?AF7$A53>+I;F5:+77;9GD7Place C

'(*,!'&$&S(*'R$,*! + '# &#!$$-@>7EEGE;@9 '$  873FGD7I:7@8776;@9I;F:9G@

'*&!&BAI7D767CG;B?7@F1.a. Turn the engine off before troubleshooting and maintenancework unless the maintenance work requires it t

'(*,!'&$&S(*'!&!,!'&'/$!&,*%+/+• Wire Feed SpeedRConstant Current.RConstant

'(*,!'&&$'.'$,%,*Reads 0 – 40 VDC and is polarity insensitive.Shows OCV when not welding and

%3J;?G?/++F3@63D6,ADCG7400450570650700%3J;?G?/+JFD3,ADCG7220250300350400%;@;?G?D5.A>FE15 V17 V21 V24 V27 V'(*,!'&

'(*,!'&$&S(*''&+,&,-**&,/!*/$!&(See Figure B.3)Most semiautomatic welding processe

For best results, keep the gun cable and conduit asstraight as possible. Perform regular maintenanceand cleaning on the gun liner, condui

'(*,!'&!&,*&$'&,*'$+$&S(*'1 2 Step Trigger Interlock Switch2 CV / CC Switch3 Pressure Adj

'(*,!'&!&,*&$'&,*'$++*!(,!'&(See Figure B.2) +,(  ,*!*!&,*$'#+/!

'(*,!'&**'&,*'$+(See Figure B.4)!-*$&S(*'1 Gas Purge Pushbutton2 Shielding Gas Inlet3

++'*!+$&S(*'/!*,0(Steel Wires:Cored Wires:(Extra Torque Models only)Aluminum Wires:$,*'+!1.023-.030 (0.6-0

++'*!+$&S(*'K1796-xxK2593-xxK1803-1K1840-xxK1842-xxAWG 1/0 Co-Axial Power CableAWG #1 Coaxial Power Cable Work and Feeder

;;+,0;;ARC 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 wh

++'*!+$&S(*'K910-1K910-2K1500-1Ground ClampGround ClampGun Receiver Bushing (for gunswith K466-1 Lincoln gun connec-tors;

++'*!+$&S(*'K1500-4K1500-5K435K468K590-6K586-1K283Gun Receiver Bushing (for gunwith K466-3 Lincoln gun connec-tors; compa

$,*!+ '#53@=;>>R,GD@F:7 ;@BGFBAI7D' 3F F:7I7>6;@9 BAI7D EAGD57 478AD7;@EF3>>3F;A@ AD 5:3@9;@9 6D;H7DA

%!&,&&/!*+(.$!,!'&Calibration of the LN-25™ PRO may be required whenthe P.C. board, wire feed

,*'-$+ '',!&$&S(*'If for any reason you do not understand the test procedures or are unable to perfor

,*'-$+ '',!&$&S(*'Observe all Safety Guidelines detailed throughout this manualIf for any reason you do no

,*'-$+ '',!&$&S(*'Observe all Safety Guidelines detailed throughout this manualIf for any reason you do no

,*'-$+ '',!&$&S(*'Observe all Safety Guidelines detailed throughout this manualIf for any reason you do no

!*%+$&S(*'NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The spe

!%&+!'&(*!&,$&S(*' 17.198.6516” C IRCLE12” x 18” ELLIPSE 23.1714.81

;;;+,0;;;FOR ELECTRICALLYpowered equipment.8.a. Turn off input power using the disconnectswitch at the fuse box before working onthe equipment.8.b.

&',+$&S(*'

LN-25™PROP-667P-667PARTS LIST FORLN-25™PROThis parts list is provided as an informative guide only.It was accurate at the time of printing. These page

LN-25™PRO10-07-2010P-667-AP-667-AILLUSTRATION OF SUB-ASSEMBLIES5511442233

Use the Illustration of Sub-Assemblies page and the table below to determine which sub assembly page andcolumn the desired part is located on for your

10-07-2010LN-25™PROP-667-B.1P-667-B.1Miscellaneous Options Available for your machine are listed below:# Indicates a change this printing.OPTIONAL EQU

LN-25™PRONOTES

LN-25™PRO10-07-2010P-667-CP-667-CFront Panel Assembly5D5D1A1A5A5A331313778820A20A12B12B12A12A161617172A2A5D5D5C5C5B5B2B2B6A6A6E6E664A4A4410A10A10B10B

Front Panel Assembly (G5803-3), Includes: NSS 1X•Front Panel Assembly (G5803-4), Includes: NSS 1•X1A Case Front, Analog G5580-2 1XX2A Meter Bracket M2

10-07-2010LN-25™PROP-667-DP-667-DControl Box Assembly1114A14A16A16A667A7A17A17A13A13A13B13B18A18A9A9A9B9B25A25A8A8A12K12K11D11D11B11B11C11C10A10A12G12

Control Box Assembly (G6643-1), Includes: NSS 1X1 Control Box G5584-4 1X2 Control Box Decal (Not Shown) M22570 1X3A Control P.C. Board Assembly S28010

;H+,0;H(*N-,!'&++Y*,NPour votre propre protection lire et observer toutes les instructionset les précautions de sûreté specifi

10-07-2010LN-25™PROUse only the parts marked “x” in the column under theheading number called for in the model index page.# Indicates a change this pr

LN-25™PRONOTES

10-07-2010LN-25™PROP-667-EP-667-ESpindle & Mast Assembly1177888899101011111212223A3A3B3B55

Spindle & Mast Assembly (G5572-2), Includes: NSS 1X1 Spindle Mast G5571-2 1X2 Spindle Shaft M20990-1 1X3A Thread Forming Screw S9225-102 2X3B Exte

LN-25™PRO10-07-2010P-667-FP-667-FWire Drive Assembly3A3A15A15A2121222215B15B112323202028283D3D3E3E2L2L2A2A19A19A19B19B19C19C9B9B9A9A88666A6A775A5A5B5B

Wire Drive Assembly, Includes: M21079-7 1X•Wire Drive Assembly, Incudes: M21079-8 1•X1 Wire Drive Panel G5569-2 1XX2 Feed Plate Assembly, Includes: M1

28 Decal, Pressure Arm S25890-1 1XX29 Gun Adapter Bushing (Not Shown) S22774-1 1XX10-07-2010LN-25™PROUse only the parts marked “x” in the column under

LN-25™PRONOTES

10-07-2010LN-25™PROP-667-GP-667-GCase Assembly16A16A16B16B15B15B15A15A13136611111212771B1B55441A1A99

Case Assembly (G5661-2), Includes: NSS 1X1A Plastic Case Asbly, Includes: G5660 1X1B Latch M20977-1 1X4 Warning Decal (S20601-2A) (Part of S20601) NSS

H+,0HElectromagnetic Compatibility (EMC)ConformanceProducts displaying the CE mark are in conformity with European Community Council Directive of 1

LN-25™PRONOTES

&',+$&S(*'

/*&!&.!+'(*-!'&,,&,!'&/*&-&,&MV'+B3@;E:D7@5:7D?3@(ADFG9G7E7"3B3@7E7:;@7E7#

/*&!&.!+'(*-!'&,,&,!'&/*&-&,&MV'+B3@;E:D7@5:7D?3@(ADFG9G7E7"3B3@7E7:;@7E7#

CUSTOMER ASSISTANCE POLICYThe business of The Lincoln Electric Company is manufacturing andselling high quality welding equipment, consumables, and cu

H;+,0H;Electromagnetic Compatibility (EMC)The size of the surrounding area to be considered will depend on the structure of the building and othera

H;;H;;Thank Youfor selecting a )-$!,0 product by Lincoln Electric. We want youto take pride in operating this Lincoln Electric Company produ

H;;;H;;;,$''&,&,+Page––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––!@EF3>>3F;A@