Lincoln Electric INVERTEC SVM129-B User Manual
Invertec, Svm129-b, Service manual
SVM129-B
April, 2011
Safety Depends on You
Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However,
your overall safety can be
increased by proper installation .
. . and thoughtful operation on
your part. DO NOT INSTALL,
OPERATE OR REPAIR THIS
EQUIPMENT WITHOUT READ-
ING THIS MANUAL AND THE
SAFETY PRECAUTIONS CON-
TAINED THROUGHOUT. And,
most importantly, think before
you act and be careful.
For use with machine code numbers:10151,10152,10153,10309,10381,10382,10383,11090,11091,11092,
11115,11116
INVERTEC
®
STT
®
& STT
®
II
SERVICE MANUAL
• Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: 1-888-935-3877 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
• World's Leader in Welding and Cutting Products •
Copyright © Lincoln Global Inc.
RETURN TO MAIN MENU
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