Miller Gold Seal 422 Manuale d'uso - Pagina 37

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Section 1 − Safety Precautions - Read Before Using3

Symbol Usage3

Arc Welding Hazards3

Principal Safety Standards5

Emf Information6

Signification Des Symboles7

Dangers Supplémentaires En Relation Avec L'installation, Le Fonctionnement Et La Maintenance9

Principales Normes De Sécurité10

Information Sur Les Champs Électromagnétiques10

Section 2 − Specifications11

Duty Cycle And Overheating11

Volt-Ampere Curves12

Section 3 − Installation12

Selecting A Location12

Installing Welding Gun13

Changing Polarity13

Installing Gas Supply14

Installing Wire Spool And Adjusting Hub Tension15

Threading Welding Wire16

Section 4 − Operation17

Section 5 − Maintenance &Troubleshooting18

Routine Maintenance18

Changing Drive Roll Or Wire Inlet Guide18

Drive Motor Fuse F119

Short Circuit Shutdown19

Replacing Gun Contact Tip19

Troubleshooting Table21

Section 6 − Electrical Diagram22

Section 7 − Mig Welding (Gmaw) Guidelines23

Typical Mig Process Connections23

Typical Mig Process Control Settings24

Holding And Positioning Welding Gun25

Conditions That Affect Weld Bead Shape26

Gun Movement During Welding27

Poor Weld Bead Characteristics27

Good Weld Bead Characteristics27

Troubleshooting − Excessive Spatter28

Troubleshooting − Porosity28

Troubleshooting − Excessive Penetration28

Troubleshooting − Lack Of Penetration29

Troubleshooting − Incomplete Fusion29

Troubleshooting − Burn-Through29

Troubleshooting − Waviness Of Bead30

Troubleshooting − Distortion30

Common Mig Shielding Gases31

Section 8 − Parts List32

Owner's Record36

Resources Available36

Miller Gold Seal 422 Manuale d'uso - Pagina 37

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