Tweco 300 MST Arcmaster - Manual (Page 4)

TABLE OF CONTENTS
1.0 SAFETY
INSTRUCTIONS AND WARNINGS ...................................................................................... 1
1.01 Arc Welding hazards ............................................................................................................................................ 1
1.02 Principal Safety Standards ................................................................................................................................... 4
1.03 Precautions de Securite en Soudage à l’Arc ......................................................................................................... 5
1.04 Dangers Relatif au Soudage à l’Arc ...................................................................................................................... 5
1.05 Principales Normes de Securite ........................................................................................................................... 8
SYMBOL LEGEND ......................................................................................................................... 9
2.0 INTRODUCTION AND DESCRIPTION........................................................................................... 10
2.01 Description......................................................................................................................................................... 10
2.02 Functional Block Diagram................................................................................................................................... 11
2.03 Transporting Methods........................................................................................................................................ 11
2.04 Installation Recommendations ........................................................................................................................... 12
2.04.01 Environment........................................................................................................................................... 12
2.04.02 Location ................................................................................................................................................. 12
2.05 Electrical Input Connections............................................................................................................................... 13
2.05.01 Electrical Input Requirements ................................................................................................................ 13
2.05.02 Input Power ........................................................................................................................................... 15
2.05.03 High Frequency Introduction.................................................................................................................. 16
2.05.04 High Frequency Interference .................................................................................................................. 16
2.06 Specifications..................................................................................................................................................... 17
2.07 Duty Cycle.......................................................................................................................................................... 18
3.0 OPERATOR CONTROLS.......................................................................................................... 19
3.01 ARC MASTER 300 MST Controls ....................................................................................................................... 19
3.02 Weld Parameter Descriptions for ARC MASTER 300 MST.................................................................................. 22
3.03 Weld Process Selection for the ARC MASTER 300 MST .................................................................................... 23
3.04 Weld Parameter Descriptions............................................................................................................................. 23
3.04.01 WELD (V)............................................................................................................................................... 23
3.04.02 INDUCTANCE ......................................................................................................................................... 23
3.04.03 HOT START............................................................................................................................................ 24
3.04.04 WELD (A)............................................................................................................................................... 24
3.04.05 ARC CONTROL....................................................................................................................................... 24
3.05 Weld Parameters................................................................................................................................................ 25
3.06 Power Source Features ...................................................................................................................................... 25
4.0 SEQUENCE OF OPERATION ..................................................................................................... 27
4.01 Stick Welding ..................................................................................................................................................... 28
4.02 LIFT TIG Welding ............................................................................................................................................... 28
4.03 MIG Welding ...................................................................................................................................................... 28
4.04 Save-Load Operation.......................................................................................................................................... 29
5.0 BASIC WELDING GUIDE ......................................................................................................... 30
5.01 Electrode Polarity ............................................................................................................................................... 30
5.02 Tungsten Electrode Current Ranges ................................................................................................................... 30
5.03 Tungsten Electrode Types .................................................................................................................................. 30
5.04 Guide for Selecting Filler Wire Diameter ............................................................................................................. 31
5.05 Shielding Gas Selection...................................................................................................................................... 31
5.06 TIG Welding Parameters for Low Carbon & Low Alloy Steel Pipe....................................................................... 31
5.07 Welding Parameters for Steel............................................................................................................................. 32