Thermadyne CutMaster 75 - Page 2

Thermadyne CutMaster 75

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Table of Contents

Table of Contents4
General Information7
- Important Safety Precautions7
- Notes, Cautions and Warnings7
- Publications8
- Note, Attention Et Avertissement9
- Precautions de Securite Importantes9
- Documents de Reference11
- Declaration of Conformity13
- Statement of Warranty14
- General Service Philosophy15
- Scope of Manual15
- Section 2 Introduction15
- Service Responsibilities15
Introduction15
Description17
- Scope17
- Section 3 Description17
- General Description17
- Specifications/Design Features17
- Power Supply Options and Accessories18
Service Troubleshooting Diagnostics19
- Introduction19
- Periodic Inspection & Cleaning Procedures19
- System Theory19
- Common Operating Problems20
- Troubleshooting Guide - General Information21
- Circuit Fault Isolation22
- Main Input and Internal Power Problems23
- Pilot Arc Problems26
- Main Arc Problems28
- Test Procedures28
Service33
- Scope33
- Section 5 Service33
- Anti-Static Handling Procedures33
- Parts Replacement - General Information33
- Major External Parts Replacement34
- Front Panel Parts Replacement35
- Left Side Internal Component Parts Replacement36
- Rear Panel Parts Replacement39
- Right Side Internal Component Parts Replacement41
- Parts Lists49
Appendix 1: Input Wiring Requirements59
Appendix 2: Sequence of Operation (Block Diagram60
Appendix 3: Logic Pc Board Layout61
Appendix 4: Main Power Pc Board Layout62
Appendix 5-A: 208/230 Volt Main Pc Board Wiring64
APPENDIX 5-B: 400-V 460-V, and 600-V MAIN PC BOARD WIRING65
Appendix 6: CD Pc Board Layout66
Appendix 7: Led/Pot Pc Board Layout67
Appendix 8: Igbt Circuit Pc Board Layout68
Appendix 9: Input Diode Pc Board Layout69
Appendix 10: Output Diode Pc Board Layout70
Appendix 11: Power Output Pcb Wiring Diagram71
Appendix 12: 28Vac Circuit Diagram72
Appendix 13: Maintenance Schedule73
Appendix 14: System Schematic, 208/230-Volt Units74
Appendix 15: System Schematic, 400-V, 460-V Units76
Appendix 16: System Schematic, 600-V Units78

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