Hobart Welding Products 187

OM-228 187 Page 30

SECTION 8 − ELECTRICAL DIAGRAM

Figure 8-1. 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 or DIRT can injure eyes. BUILDUP OF GAS can injure or kill. 1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. FALLING EQUIPMENT can injure. OVERUSE can cause OVERHEATING FLYING SPARKS can injure. 1-4. California Proposition 65 Warnings 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 larc UNE DCHARGE LECTRIQUE peut entraner la mort. LES PICES CHAUDES peuvent provoquer des brlures. LES FUMES ET LES GAZ peuvent tre dangereux. LES RAYONS DE LARC peuvent provoquer des brlures dans les yeux et sur la peau. LE SOUDAGE peut provoquer un incendie ou une explosion. DES PIECES DE METAL ou DES SALETES peuvent provoquer des blessures dans les yeux. 2-3. Risque DINCENDIE OU DEXPLOSION. LA CHUTE DE LQUIPEMENT peut provoquer des blessures. LEMPLOI EXCESSIF peut SURCHAUFFER LQUIPEMENT. LES TINCELLES PROJETES peuvent provoquer des blessures. 2-4. Proposition californienne 65 Avertissements 2-5. Principales normes de scurit 2-6. Informations relatives aux CEM Page SECTION 3 DEFINITIONS 3-1. Symbols And Definitions AAmperage VVoltage Hz Hertz Negative SECTION 4 SPECIFICATIONS 4-1. Specifications 4-2. Duty Cycle And Overheating Duty Cycle % A or V Output Amperes 4-3. Volt-Ampere Curves SECTION 5 INSTALLATION 5-1. Installing Nozzle, Contact Tip, And Adapter Gun Not Seated Gun Fully Seated CorrectIncorrect 5-3. Installing Work Clamp . 5-4. Process/Polarity Table 5-5. Changing Polarity . 5-6. Installing Gas Supply . 5-7. Selecting A Location And Connecting Input Power 1 5-8. Electrical Service Guide 5-9. Installing Wire Spool And Adjusting Hub Tension Installing 8 in. (203 mm) Wire Spool Installing 4 in. (102 mm) Wire Spool 5-10. Threading Welding Wire . SECTION 6 OPERATION 6-1. Controls . Page 6-2. Weld Parameter Chart CFH OM-228 187 Page 23 SECTION 7 MAINTENANCE & TROUBLESHOOTING 7-1. Routine Maintenance 3 Months 6 Months 7-2. Overload Protection 7-4. Changing Drive Roll Or Wire Inlet Guide 7-5. Changing Nozzle, Contact Tip, Adapter And Liner, And Cleaning Gun Casing . 7-6. Replacing Switch And/Or Head Tube 7-7. Troubleshooting Table Page Page Page SECTION 9 MIG WELDING (GMAW) GUIDELINES 9-1. Typical MIG Process Connections ! 9-2. Typical MIG Process Control Settings . 9-3. Holding And Positioning Welding Gun . 9-4. Conditions That Affect Weld Bead Shape . 9-5. Gun Movement During Welding . 9-6. Poor Weld Bead Characteristics 9-7. Good Weld Bead Characteristics 9-8. Troubleshooting Excessive Spatter 9-9. Troubleshooting Porosity 9-10. Troubleshooting Excessive Penetration 9-11. Troubleshooting Lack Of Penetration 9-12. Troubleshooting Incomplete Fusion 9-13. Troubleshooting Burn-Through 9-14. Troubleshooting Waviness Of Bead 9-15. Troubleshooting Distortion 9-16. Common MIG Shielding Gases 9-17. Troubleshooting Guide For Semiautomatic Welding Equipment Problem Probable Cause Remedy Page SECTION 10 PARTS LIST . Figure 10-1. Main Assembly Page Page Page 10-3. Optional Drive Rolls 10-4. Options Warranty Questions? Call 1-800-332-3281 7 AM 6 PM EST Effective January 1, 2009 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