Contents
3
1. Safety Precautions
1.0 Health Hazard Information 4
1.1 Personal Protection 4
1.2 Electric Shock 5
1.3 Use of Gas Cylinders 5
1.4 User Responsibility 5
2. Manual Metal Arc Welding Process (MMAW)
2.0 MMA Welding Principle 6
2.1 Fundamental Equipment Requirements 6
2.2 Control of the Process 7
2.3 Features of the Process 7
2.4 Application of MMA Welding 7
2.5 MMA Electrode Characteristics 7
2.6 Electrode types 8
2.7 Care of Electrodes 8
3. Gas Tungsten Arc Welding (GTAW)
3.0 Gas Tungsten Arc Welding (TIG) Principle 9
3.1 Equipment Requirements 9
3.2 Modes of Operation 9
3.3 Electrode Types and Preparation 10
3.4 Consumables 11
3.5 Control of the Process 11
3.6 Features of the Process 12
3.7 Application of GTAW 12
3.8 Technique 12
4. Shielding Gases
4.0 Overview 13
4.1 General Instructions for Pressure Regulators 13
5. Plant Specifications
5.0 Machine Specifications and Contents 14
6. Operating Controls
6.0 Diagram A 15
6.1 BOC Inverweld 110 VRD and 140 VRD
Operation 16
7. Periodic Maintenance
7.0 Power Source 17
8. Electrical Diagrams
8.0 Inverweld 140 18
8.1 Inverweld 110 VRD / 140 VRD 19
9. Machine Spare Parts
9.0 Diagram D – Machine Spare Parts 20
9.1 Machine Spare Parts List 21
10. Terms of Warranty
10.0 Terms of Warranty 22
10.1 Limitations on Warranty 22
10.2 Warranty Repairs 22
11. Glossary
23
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