Thermal Arc ARCMASTER 300 MST Operating Manual page 5

6.0 BASIC STICK WELDING GUIDE ................................................................................................. 33
6.01 Electrode Polarity ............................................................................................................................................... 33
6.02 Effects of Stick Welding Various Materials ......................................................................................................... 33
7.0 BASIC MIG WELDING GUIDE.................................................................................................... 35
7.01 Setting of the Power Source ............................................................................................................................... 35
7.02 Position of MIG Torch ........................................................................................................................................ 35
7.03 Distance from the MIG Torch Nozzle to the Work Piece...................................................................................... 35
7.04 Travel Speed....................................................................................................................................................... 36
7.05 Electrode Wire Size Selection ............................................................................................................................. 36
7.06 Deposition Rate Comparison .............................................................................................................................. 36
8.0 ROUTINE MAINTENANCE ........................................................................................................ 37
9.0 BASIC TROUBLESHOOTING ..................................................................................................... 38
9.01Solving MIG Problems Beyond the Welding Terminals........................................................................................ 38
9.01.01 Porosity.................................................................................................................................................. 38
9.01.02 Inconsistent Wire Feed ........................................................................................................................... 39
9.02 MIG Welding Problems ...................................................................................................................................... 40
9.03 TIG Welding Problems........................................................................................................................................ 41
9.04 Stick Welding Problems ..................................................................................................................................... 43
9.05 Power Source Problems..................................................................................................................................... 45
10.0 VOLTAGE REDUCTION DEVICE (VRD) ......................................................................................... 46
10.01 VRD Specification............................................................................................................................................. 46
10.02 VRD Maintenance ............................................................................................................................................. 46
10.03 Switching VRD ON/OFF .................................................................................................................................... 47
11.0 POWER SOURCE ERROR CODES............................................................................................... 49
APPENDIX A - INTERCONNECT DIAGRAM ........................................................................................... 51
APPENDIX B - ARCMASTER 300MST ACCESSORIES............................................................................... 53
GLOBAL CUSTOMER SERVICE CONTACT INFORMATION....................................................... Inside Rear Cover
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