Miller Electric DVI-2 R manual MIG Welding Gmaw Guidelines, Typical MIG Process Connections

Page 36

SECTION 8 − MIG WELDING (GMAW) GUIDELINES

8-1. Typical MIG Process Connections

! Weld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as close to the weld as possible.

Regulator/

Flowmeter

Wire Feeder/

Power Source

Gun

Shielding Gas

Gas

Workpiece

Work Clamp

mig1_2007−05 / Ref. 801 909-A

OM-232 386 Page 32

Image 36

Contents OM-232 386B ProcessesDescription File MIG GmawFrom Miller to You Table of Contents − Parts List − MIG Welding Gmaw GuidelinesTypical MIG Process Connections Symbol Usage Arc Welding HazardsElectric Shock can kill HOT Parts can cause severe burnsFumes and Gases can be hazardous ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal or Dirt can injure eyesWelding Wire can cause injury Fire or Explosion hazardFalling Unit can cause injury Moving Parts can cause injuryPrincipal Safety Standards California Proposition 65 WarningsEMF Information About Implanted Medical DevicesSymboles utilisés UNE Décharge Électrique peut entraîner la mortDES Pièces Chaudes peuvent provoquer des brûlures graves LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in cendie ou une explosion LE Bruit peut endommager l’ouïe LES Bouteilles peuvent exploser si elles sont endommagéesRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesserProposition californienne 65 Avertissements LES Fils DE Soudage peuvent provoquer des blessuresLE Soudage À L’ARC risque de provoquer des interférences Principales normes de sécurité Information EMFEn ce qui concerne les implants médicaux OM-232 386 − Installation Symbols And DefinitionsSpecifications − DefinitionsDuty Cycle And Overheating 40% duty cycle at 150 amps Minutes Welding Minutes RestingOverheating MinutesConnecting To Weld Output Terminals Correct InstallationVolt-Ampere Curves Range Range 4 RangeInstalling Work Cable And Clamp Setting Gun Polarity For Wire TypePolarity Changeover Label Information 11/16Installing Gas Supply Rear PanelTools Needed 8, 5/8 Installing MIG Wire Spool and Adjusting Hub Tension Installing 1 Or 2 lb Wire SpoolUse compression spring With 8 in 200 mm spools To turn spool, tension is setConnecting 1-Phase Input Power For 230 VAC 230 VAC =GND/PE Earth GroundElectrical Service Guide For 230 VAC Hz Single PhaseExtension Cord Data Selecting a Location And Connecting Input Power Do not move or operate unit where it could tip18 in 457 mm of space for airflow Threading Welding Wire PressureScale Remove gun nozzle and contact tipTurn Off unit, and disconnect input power Connecting An Optional Spool Gun − Operation ControlsVoltage Control Weld Parameter Chart Voltage Chart SettingsInput Line Parameter226 652-A − Maintenance &TROUBLESHOOTING Routine MaintenanceChanging Drive Roll and Wire Inlet Guide Unit OverloadAligning Drive Rolls and Wire Guide TroubleshootingTurn Off power Welding Trouble RemedyWire Drive/Gun Trouble Remedy OM-232 386 − Electrical Diagram Welding Power Source Circuit Diagram229 598-B − MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsTypical MIG Process Control Settings Wire Size Amperage RangeAmperage Select VoltageHolding And Positioning Welding Gun Groove WeldsConditions That Affect Weld Bead Shape PushPerpendicular Drag Short Normal LongPoor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Excessive Spatter Troubleshooting − PorosityTroubleshooting − Excessive Penetration Possible Causes Corrective ActionsTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Troubleshooting − Waviness Of Bead Troubleshooting − DistortionWeld bead Troubleshooting Guide For Semiautomatic Welding Equipment Problem Probable Cause RemedyCommon MIG Shielding Gases ApplicationWelding arc not stable Wire slipping in drive rolls Readjust welding parametersWelding power source Drive rolls if necessary− Parts List Drive Roll And Wire Guide KitsService Your distributor also givesSupport To locate a Distributor or Service Agency visit Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s