MASTER TABLE OF CONTENTS FOR ALL SECTIONS
Page
Safety
........................................................................................................................i-iv
Installation.........................................................................................................Section A
Technical Specifications .........................................................................................A-1
Location ..................................................................................................................A-2
Machine Grounding ................................................................................................A-2
Input Connections...................................................................................................A-2
Output Connections ................................................................................................A-4
Operation...........................................................................................................Section B
Safety Precautions..................................................................................................B-1
General Description ................................................................................................B-2
Controls and Settings .............................................................................................B-2
Welding Operation ..................................................................................................B-4
Auxillary Power .......................................................................................................B-5
Overload Protection ................................................................................................B-5
Accessories.......................................................................................................Section C
Options/Accessories...............................................................................................C-1
Wire Feeder Connections .........................................................................C-2 — C-13
Maintenance ......................................................................................................Section D
Input Filter Capacitor Discharge Procedure ...........................................................D-1
Preventive maintenance .........................................................................................D-2
Theory of Operation..........................................................................................Section E
Power Supply Operation.........................................................................................E-1
Field Effect Transistor (FET) Operation..................................................................E-5
Pulse Width Modulation ..........................................................................................E-6
Protective Circuits...................................................................................................E-7
Troubleshooting and Repair ............................................................................Section F
How To Use Troubleshooting Guide.......................................................................F-1
PC Board Troubleshooting Procedures ..................................................................F-2
Matched Parts.........................................................................................................F-2
Troubleshooting Guide............................................................................................F-3
Test Procedures
Capacitor Replacement ........................................................................................F-50
Switch PC Board Replacement.............................................................................F-54
Test After Repair of Switch Boards and/or Capacitors .........................................F-56
Output Diode Replacement...................................................................................F-58
Input Filter Capacitor Conditioning........................................................................F-59
Environmental Protection......................................................................................F-59
Retest After Repair ...............................................................................................F-60
Electrical Diagram ............................................................................................Section G
Parts Manual
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INVERTEC V300-I
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