Lincoln Electric INVERTEC SVM129-B User Manual
Invertec, Svm129-b, Service manual
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Table of contents
Document Outline
- Master Table of Contents
- Safety
- Section A - Installation
- Section B - Operation
- Section C - Accessories
- Section D - Maintenance
- Section E - Theory of Operation
- Section F - Troubleshooting and Repair
- Symptoms
- Major physical or electrical damage is evident.
- Machine has no open circuit voltage. Wire feeds OK.
- Machine has no welding output (no open circuit voltage), and the wire feeder does not feed wire when the gun trigger is pulled.
- Machine is dead - no output - no fan - no display.
- No output or reduced output the first time power is applied to the machine.
- No output. Main fuses are open, indicating excessive current draw.
- Machine loses output when gun trigger is pulled or arc is struck. Machine output returns after a few seconds and trigger is pulled again. The thermal indicator light is lit.
- Machine loses output while welding. The thermal indicator light is lit. Normal welding output return safter about 10 minutes.
- Porosity in the weld.
- Weld bead appears "cold."
- Molten weld puddle appears excessively "violent."
- Excessive weld spatter. Arc sounds and looks like a standard MIG process.
- Poor welding, weld settings drift, or output power is low.
- Section G - Electrical Diagrams