Tweco 251 Thermal Arc Fabricator - Manual (Page 5)

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 MIG Gun Identification ................................................................................... 4-8
4.04 TWECO Weldskill 400 AMP Weld Gun ............................................................ 4-9
4.05 Installing A New Wire Conduit ...................................................................... 4-10
4.06 MIG Gun Maintenance .................................................................................. 4-11
4.07 Basic Welding Technique .............................................................................. 4-11
4.08 Stitch Welding Operation .............................................................................. 4-13
4.09 Spot Welding Operation ............................................................................... 4-13
4.10 Gas Selection for Gas Metal Arc Welding ..................................................... 4-14
4.11 Welding Setting Selection Guide .................................................................. 4-16
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
Statement of Warranty
Warranty SCHEDULE
GLOBAL CUSTOMER SERVICE CONTACT INFORMATION .......................... Inside Rear Cover