Thermal Arc 251 FABRICATOR, Operating Manual

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TABLE OF CONTENTS (continued) TABLE OF CONTENTS
SECTION 4:
OPERATION ........................................................................................... 4-1
4.01 Power Supply Controls, Indicators and Features ............................................ 4-1
4.02 Weld Mode Selector ....................................................................................... 4-6
4.03 TWECO Weldskill 300 AMP Weld Gun ............................................................ 4-8
4.04 Installing A New Wire Conduit ........................................................................ 4-8
4.05 MIG Gun Maintenance .................................................................................. 4-10
4.06 Basic Welding Technique .............................................................................. 4-10
4.07 Stitch Welding Operation .............................................................................. 4-12
4.08 Spot Welding Operation ............................................................................... 4-12
4.09 Gas Selection for Gas Metal Arc Welding ..................................................... 4-13
4.10 Welding Setting Selection Guide .................................................................. 4-14
SECTION 5:
MAINTENANCE & TROUBLESHOOTING .......................................................... 5-1
5.01 Routine Maintenance & Inspection ................................................................. 5-1
5.02 Basic Troubleshooting .................................................................................... 5-3
5.03 Solving Problems Beyond the Welding Terminals .......................................... 5-3
5.04 Welding Problems .......................................................................................... 5-5
5.05 Power Supply Problems ................................................................................. 5-7
APPENDIX 1: OPTIONAL ACCESSORIES AND CONSUMABLES ...................................... A-1
APPENDIX 2: POWER SUPPLY CIRCUIT DIAGRAM ................................................... A-2
APPENDIX 3: FEEDROLL KITS ........................................................................... A-4
LIMITED WARRANTY
WARRANTY SCHEDULE
GLOBAL CUSTOMER SERVICE CONTACT INFORMATION .......................... Inside Rear Cover