Lincoln Electric 170I manual Routine Maintenance, GUN and Cable Maintenance

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D-1

 

MAINTENANCE

 

D-1

 

 

 

 

 

SAFETY PRECAUTIONS

WARNING

ELECTRIC SHOCK can kill.

• Disconnect input power by removing plug from receptacle before working inside Handymig 170i. Use only grounded recepta- cle. Do not touch electrically “hot” parts inside Handymig 170i.

•Have qualified personnel do the maintenance and trouble shoot- ing work.

ROUTINE MAINTENANCE

POWER SOURCE COMPARTMENT

In extremely dusty locations, dirt may clog the air pas- sages causing the welder to run hot. Blow dirt out of the welder with low pressure air at regular intervals to eliminate excessive dirt and dust build-up on internal parts.

WIRE FEED COMPARTMENT

•When necessary, vacuum accumulated dirt from gearbox and wire feed section.

•Occasionally inspect the incoming guide tube and clean inside diameter if necessary.

•Motor and gearbox have lifetime lubrication and require no maintenance.

FAN MOTOR

Has lifetime lubrication — requires no maintenance.

WIRE REEL SPINDLE

Requires no maintenance. Do not lubricate shaft.

GUN AND CABLE

MAINTENANCE

FOR MAGNUM™ 100L GUN

Gun Cable Cleaning

Clean cable liner after using approximately 300 lbs (136 kg) of solid wire or 50 lbs (23 kg) of flux-cored wire. Remove the cable from the wire feeder and lay it out straight on the floor. Remove the contact tip from the gun. Using low pressure air, gently blow out the cable liner from the gas diffuser end.

CAUTION

Excessive pressure at the start may cause the dirt to form a plug.

Flex the cable over its entire length and again blow out the cable. Repeat this procedure until no further dirt comes out.

Contact Tips, Nozzles, and Gun Tubes

•Dirt can accumulate in the contact tip hole and restrict wire feeding. After each spool of wire is used, remove the contact tip and clean it by push- ing a short piece of wire through the tip repeatedly. Use the wire as a reamer to remove dirt that may be adhering to the wall of the hole through the tip.

•Replace worn contact tips as required. A variable or “hunting” arc is a typical symptom of a worn con- tact tip. To install a new tip, choose the correct size contact tip for the electrode being used (wire size is stenciled on the side of the contact tip) and screw it snugly into the gas diffuser.

•Remove spatter from inside of gas nozzle and from tip after each 10 minutes of arc time or as required.

•Be sure the gas nozzle is fully screwed onto the diffuser for gas shielded processes. For the Innershield® process, the gasless nozzle should be screwed onto the diffuser.

Handymig 170i

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Contents Handymig Safety For Engine powered equipmentElectric and Magnetic Fields may be dangerous Fumes and Gases can be dangerous Electric Shock can killARC Rays can burn 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 Section E ViiiSection D Section FInstallation Technical Specifications HandymigSafety Precautions Identify and Locate ComponentsOutput Connections Work Clamp InstallationSelect Suitable Location StackingConnecting Gun Cable to the Handymig GUN InstallationWork Cable Installation GAS ConnectionInput Connections Figure A.5Electrical Input Connection For Rated Output Line Cord ConnectionOperation Design Features AdvantagesOperational Features and Controls General DescriptionWelding Capability Controls and SettingsLimitations Welding Operations Wire LoadingSequence of Operation Wire Threading Figure B.4Process Guidelines Cleaning Tip And NozzleMaking a Weld Welding with Fcaw Innershield Changing Machine Over to Feed Other Wire SizesWelding with Gmaw MIG Shielding GasOverload Protection Learning to WeldLearning to Weld SELF-SHIELDED Fcaw Welding ARC Gmaw MIG Welding ARCCommon Metals Process SelectionJoint Types and Positions Penetration Welding In The Vertical PositionFillet Welds Vertical-down Welding Machine SET UP for the SELF-SHIELDED Fcaw ProcessWelding Techniques for the SELF- Shielded Fcaw Process 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 To Correct Poor Penetration in order of impor- tance Troubleshooting WeldsTo Eliminate a Ropy Convex Bead To Eliminate Stubbing* in order of importanceProper Gun Handling Application Chart Routine Maintenance MaintenanceGUN and Cable Maintenance Changing the Contact TIP Component Replacement ProceduresChanging Drive Roll GUN Handle Parts Changing LinerLiner trim length Ground Test Procedure 1TROUBLESHOOTINGE-1 HOW to USE Troubleshooting GuideProblems Possible Areas Symptoms Misadjustments TroubleshootingTroubleshooting Guide 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
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