Hobart Welding Products OM-947 212 149D

OM-947 Page 27

SECTION 7 − ELECTRICAL DIAGRAM

230 950-A

Figure 6-1. Circuit Diagram

Contents

Main From Hobart to You Page TABLE OF CONTENTS SECTION 1 SAFETY PRECAUTIONS - READ BEFORE USING 1-1. Symbol Usage . 1-2. Arc Welding Hazards ELECTRIC SHOCK can kill. ARC RAYS can burn eyes and skin. WELDING can cause fire or explosion. FLYING METAL can injure eyes. BUILDUP OF GAS can injure or kill. HOT PARTS can cause severe burns. 1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. FALLING UNIT can cause injury. OVERUSE can cause OVERHEATING STATIC (ESD) can damage PC boards. 1-5. Principal Safety Standards 1-6. EMF Information SECTION 2 CONSIGNES DE SCURIT LIRE AVANT UTILISATION 2-1. Symboles utiliss . 2-2. Dangers relatifs au soudage la rc UNE DCHARGE LECTRIQUE peut entraner la mort. LES RAYONS DARC peuvent entra- ner des brlures aux yeux et la peau. LE SOUDAGE peut provoquer un incendie ou une explosion. DES PARTICULES VOLANTES peuvent blesser les yeux. LES ACCUMULATIONS DE GAZ risquent de provoquer des blessures ou mme la mort. DES PICES CHAUDES peuvent provoquer des brlures graves. 2-3. Dangers supplmentaires en relation avec linstallation, le fonctionnement et la maintenance Risque DINCENDIE OU DEXPLO- SION. LA CHUTE DE LAPPAREIL peut blesser. LEMPLOI EXCESSIF peut SUR- CHAUFFER LQUIPEMENT. LES CHARGES LECTROSTATIQUES peuvent endommager les circuits imprims. 2-5. Principales normes de scurit 2-6. Information EMF SECTION 3 SPECIFICATIONS 3-1. Specifications Duty Cycle % * CSA Rating ** When shielding gas is required, MIG conversion kit 195 158 must be installed. 3-2. Duty Cycle And Overheating SECTION 4 INSTALLATION 4-1. Installing Work Clamp . 4-2. Process/Polarity Table 4-3. Changing Polarity 4-4. Installing Gas Supply This Section only applies to MIG units or units equipped with MIG kit. 4-5. Installing Wire Spool And Adjusting Hub Tension Installing 8 in (203 mm) Wire Spool Installing 4 in (102 mm) Wire Spool . 4-6. Selecting A Location And Connecting Input Power For 115 VAC Model 4-7. Installing Contact Tip And Nozzle Flux Nozzle MIG Nozzle 4-8. Threading Welding Wire . INPUT POWER . SECTION 5 OPERATION 5-1. Controls . 5-2. Operating The Gun Page Page SECTION 6 MAINTENANCE &TROUBLESHOOTING 6-1. Routine Maintenance 3 Months 6 Months 6-2. Overload Protection 6-4. Changing Drive Roll Or Wire Inlet Guide 6-5. Replacing Gun Contact Tip 6-6. Cleaning Gun Liner . 6-7. Replacing Gun Liner 6-7. Replacing Gun Liner (Continued) 6-8. Troubleshooting Table Page SECTION 8 WIRE WELDING GUIDELINES 8-1. Typical FCAW Process Connections 8-2. Typical MIG Process Connections 8-3. Typical Control Settings 8-4. Holding And Positioning Welding Gun 8-5. Conditions That Affect Weld Bead Shape . 8-6. Gun Movement During Welding 8-7. Poor Weld Bead Characteristics 8-8. Good Weld Bead Characteristics 8-9. Troubleshooting Excessive Spatter 8-10. Troubleshooting Porosity 8-11. Troubleshooting Excessive Penetration 8-12. Troubleshooting Lack Of Penetration 8-13. Troubleshooting Incomplete Fusion 8-14. Troubleshooting Burn-Through 8-15. Troubleshooting Waviness Of Bead 8-16. Troubleshooting Distortion 8-17. Troubleshooting Guide For Semiautomatic Welding Equipment Problem Probable Cause Remedy SECTION 9 PARTS LIST . Figure 8-1. Main Assembly Page Page Page Page Page Page Warranty Questions? Call 1-800-332-3281 7 AM 6 PM EST Effective January 1, 2006 * Original Main Power Rectifiers * Transformers * Stabilizers * Reactors Please complete and retain with your personal records. Resources Available Always provide Model Name and Serial/Style Number. Owners Record Protect Your Investment! Register your product at: HobartWelders.com