Lincoln Electric 170I manual Proper Gun Handling

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	B-17		LEARNING TO WELD		B-17

Proper Gun Handling

Most feeding problems are caused by improper han- dling of the gun cable or electrodes.

•Do not kink or pull the gun around sharp corners

•Keep the gun cable as straight as practical when welding.

•Do not allow dolly wheels or trucks to run over the cables.

•Keep the cable clean.

•Innershield electrode has proper surface lubrica- tion. Use only clean, rust-free electrode.

•Replace contact tip when it becomes worn or the end is fused or deformed.

Handymig 170i

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Contents Handymig Safety For Engine powered equipmentElectric and Magnetic Fields may be dangerous Electric Shock can kill ARC Rays can burnFumes and Gases can be dangerous IiiCylinder may explode if damaged Welding Sparks can cause fire or explosionInstructions for ELECTRO- Magnetic Compatibility Assessment of AreaPlease Examine Carton and Equipment For Damage Immediately Table of Contents Viii Section DSection E Section FInstallation Technical Specifications HandymigSafety Precautions Identify and Locate ComponentsWork Clamp Installation Select Suitable LocationOutput Connections StackingGUN Installation Work Cable InstallationConnecting Gun Cable to the Handymig GAS ConnectionInput Connections Figure A.5Electrical Input Connection For Rated Output Line Cord ConnectionDesign Features Advantages Operational Features and ControlsOperation General DescriptionLimitations Controls and SettingsWelding Capability Sequence of Operation Wire LoadingWelding Operations Wire Threading Figure B.4Making a Weld Cleaning Tip And NozzleProcess Guidelines Changing Machine Over to Feed Other Wire Sizes Welding with Gmaw MIGWelding with Fcaw Innershield Shielding GasLearning to Weld Learning to WeldOverload Protection SELF-SHIELDED Fcaw Welding ARC Gmaw MIG Welding ARCJoint Types and Positions Process SelectionCommon Metals Fillet Welds Welding In The Vertical PositionPenetration Machine SET UP for the SELF-SHIELDED Fcaw Process Welding Techniques for the SELF- Shielded Fcaw ProcessVertical-down Welding Correct Welding PositionCorrect Electrical Stickout ESO Correct Welding SpeedHelpful Hints PracticeMachine SET UP for the Gmaw MIG Process Welding Techniques for the Gmaw MIG ProcessFor the Handymig 170i, use the following Troubleshooting Welds To Eliminate a Ropy Convex BeadTo Correct Poor Penetration in order of impor- tance To Eliminate Stubbing* in order of importanceProper Gun Handling Application Chart GUN and Cable Maintenance MaintenanceRoutine Maintenance Changing Drive Roll Component Replacement ProceduresChanging the Contact TIP Liner trim length Changing LinerGUN Handle Parts Ground Test Procedure 1TROUBLESHOOTINGE-1 HOW to USE Troubleshooting GuideTroubleshooting Troubleshooting GuideProblems Possible Areas Symptoms Misadjustments Recommended Course of ActionAuthorized Field Service Facility Contact your local Liquid ArcWelding Problems Wiring Diagrams Handymig 170i Wiring Diagram CodePrecaucion Warnung Copyright 2000 Lincoln Global Inc