Lincoln-electric IMT768 Bester WELD-PAK HD User Manual

WELD-PAK HDIMT768-AJanuary, 201022801 St. Clair Ave. Cleveland, Ohio 44117-1199 U.S.A.Tel. 216.481.8100WEB SITE: www.lincolnelectric.comSafety Depends

INSTALLATIONINSTALACIÓNINSTALLATIONSELECT SUITABLE LOCATIONPlace the machine on a secure, level surface or recom-mended undercarriage. The machine may

A-4INSTALLATION INSTALACIÓN INSTALLATIONREQUIREMENTS FOR MAXIMUM OUTPUTA line cord with a 15 amp, 125 volt, three-prong plug (NEMAType 5-15P) is facto

B-1Lea todo el manual antes de instalar u operarla Máquinas.PRECAUCIONES DE SEGURIDADLA DESCARGA ELÉCTRICA puede causar lamuerte• No toque las partes

B-2RECOMMENDED PROCESSESThe machine can be used for welding carbon and low-alloysteel through the self-shielded, Innershield electrodeprocess.OPERATIO

B-3CONTROLS AND SETTINGSFIGURE B.1Refer to Figure B.1.1. Power ON/OFF Switch -When the power is ON thewelding output and wire feeder are ON (“hot”) wh

B-43. Deslice el resorte dentro de la bobina, luego presione elseguro de la bobina, girándolo hacia la derecha paraasegurar el ensamble de la bobina e

B-59. The spring loaded thumbscrew on the idle roll armadjusts the pressure on the wire. Adjust pressure by turn-ing the thumbscrew to prevent spool o

B-6MAKING A WELDFIGURE B.5 – WELDING SETUPREAD the LEARNING TO WELD section of this manualprior to making your first weld. Also, refer to Table B.1 an

B-7OPERATION OPERACIÓN FONCTIONNEMENTTable B.1 is on the inside case door of this machine for quickreference of welding procedures.TABLE B.1

B-8OPERATIONOPERACIÓNFONCTIONNEMENTTABLE B.1Alambre deSoldaduraPunta de ContactoRodillo impulsorArrastre "Horizontal"Sold. de Filetemantenga

2ARC WELDING CAN BE HAZARDOUS. PROTECT YOUR-SELF AND OTHERS FROM POSSIBLE SERIOUS INJURYOR DEATH. KEEP CHILDREN AWAY. PACEMAKER WEAR-ERS SHOULD CONSUL

B-9OPERATION OPERACIÓN FONCTIONNEMENTTABLE B.1Fil SoudureBout de ContactEntra nement du filHorizontal: "Tirer" de faconSoudure d’anglePendan

B-10CLEANING TIP AND NOZZLEClean the contact tip and nozzle to avoid arc bridgingbetween them. Bridging can result in a shorted nozzle, poorwelds and

B-11LEARNING TO WELDNo one can learn to weld simply by reading about it. Skillcomes only with practice. The following pages will help theinexperienced

B-12Fumes and slag generated fromInnershield type electrodes recom-mended for use with this weldingmachine can be toxic.• Avoid contact with eyes and

B-13The “arc stream” is seen in the middle of the picture. This isthe electric arc created by the electric current flowing throughthe space between th

B-14COMMON METALSMost metals found around the farm, small shop or home are low car-bon steel, sometimes referred to as mild steel. Typical items madew

B-15ILEARNING TO WELAPRENDIENDO A SOLDAR APPRENTISSAGE DU SOUDAGEButt WeldsPlace two plates side by side, leaving a space approximate-ly one half the

B-16Fillet WeldsWhen welding fillet welds, it is very important to hold the wireelectrode at a 45° angle between the two sides or the metalwill not di

B-17FIGURE B.13Vertical-down WeldingRefer to Figure B.14 Vertical-down welds are applied at afast pace. These welds are therefore shallow and narrowan

B-18WELDING TECHNIQUES FOR THESELF-SHIELDED FCAW PROCESSFour simple manipulations are of prime importance whenwelding. With complete mastery of the fo

3ELECTRIC AND MAGNETICFIELDSmay be dangerous3.a. Electric current flowing through anyconductor causes localized Electricand Magnetic Fields (EMF). Wel

B-193. The Correct Contact Tip To Work Distance(CTWD)The Contact tip to work distance (CTWD) is the distancefrom the end of the contact tip to the end

B-20Helpful Hints1. For general welding, it is not necessary to weave the arc.Weld along at a steady pace. You will find it easier.2. When welding on

B-214. After you strike the arc, practice the correct electricalstickout. Learn to distinguish it by its sound.5. When you are sure that you can hold

B-22TROUBLESHOOTING WELDSGood welds have excellent appearance.To Eliminate Porosity (in order of importance):1. Decrease voltage.2. Increase stickout.

B-23To Reduce Spatter (in order of importance):1. Increase voltage.2. Increase drag angle.3. Decrease stickout.4. Increase WFS (wire feed speed).5. De

C-1ACCESSORIESINNERSHIELD WELDING WIRENR-211-MP Innershield welding wire - .035” (0.9 mm) diam-eter flux-cored electrode.CONSUMABLE PARTSThe following

D-1SAFETY PRECAUTIONSELECTRIC SHOCK can kill.• Disconnect input power by remov-ing plug from receptacle beforeworking inside WELD-PAK HD. Useonly grou

NETTOYER LA GAINE DE LA TORCHE• Débrancher la machine ou mettre l’interrupteur decourant sur « OFF » (« O »).• Retirer la buse et le tube contact de l

D-3MAINTENANCE MANTENIMIENTO ENTRETIENCOMPONENT REPLACEMENTPROCEDURESFIGURE D.1 – CONTACT TIP REPLACEMENTCHANGING THE CONTACT TIP1. Refer to Figure D.

D-44. Replace the drive roll so that the desired groove is towardthe inside and visible.5. Replace the Thumbscrew and tighten.GUN ASSEMBLY REMOVAL1. U

4SAFETY SEGURIDAD SÉCURITÉWELDING SPARKS cancause fire or explosion.4.a. Remove fire hazards from the welding area. If thisis not possible, cover them

Si la machine a des problèmes physiques ou élec-triques évidents.1. Contacter votre service après-vente local agréé Lincoln.Pas d’entraînement du fil,

E-2Bead is too thick (intermittently).1. Travel speed is slow and/or inconsistent. Increaseand maintain a constant travel speed.2. Output heat range i

F-1M19904A.01WELDPAK HD -WIRING DIAGRAMWELDERINPUTCABLE1425M1WBG0IGREEN LEADPLUG 115VK3612231544VgHLM2redblack2112A264 22A135 2121X2X6X521X4/1X4/2X7X3

F-2WELDERINPUTCABLES11425M1WBG0IGREEN LEADPLUG361223T1S2544VggLM2redblackX1X2X3X5X4X8X11X10X9X7X6M20243AWIRING DIAGRAMNOTE: This diagram is for refere

F-3PARTS PARTES PIÈCESPart Description Descripción de las partes Désignation des pièces Part NumberDiffuser Diffuser Diffuser S25351-1Drive Roll Retai

WELD-PAK HDNOTES

WARNINGAVISO DEPRECAUCIONATTENTIONWARNUNGATENÇÃOSpanishFrenchGermanPortugueseJapaneseChineseKoreanArabic● Do not touch electrically live parts orelect

WARNINGAVISO DEPRECAUCIONATTENTIONWARNUNGATENÇÃOSpanishFrenchGermanPortugueseJapaneseChineseKoreanArabic● Turn power off before servicing.● Desconecta

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5ELECTRIC SHOCK can kill.5.a. The electrode and work (or ground)circuits are electrically “hot” when thewelder is on. Do not touch these “hot”parts wi

6FUMES AND GASEScan be dangerous.6.a.Welding may produce fumes and gaseshazardous to health. Avoid breathing thesefumes and gases.When welding, keep y

CYLINDER may explode ifdamaged.7.a. Use only compressed gas cylinderscontaining the correct shielding gas forthe process used and properly operat-ing

A-1TECHNICAL SPECIFICATIONS ESPECIFICACIONES TÉCNICASFuse Size Input Amps Power Cord20 Amp 20 15 Amp, 125VThree Prong Plug(NEMA Type 5-15P)Extension C

A-2IDENTIFY AND LOCATECOMPONENTSIf you have not already done so, unpack the WELD-PAK HDfrom its carton and remove all packing material around theWELD-