Lincoln Electric POWER MIG SVM165-A User Manual
Power mig, 350mp, Service manual svm165-a
POWER MIG
™
350MP
SERVICE MANUAL
SVM165-A
January. 2006
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 thought-
ful operation on your part. DO
NOT INSTALL, OPERATE OR
REPAIR THIS EQUIPMENT
WITHOUT READING THIS
MANUAL AND THE SAFETY
PRECAUTIONS CONTAINED
THROUGHOUT.
And, most
importantly, think before you act
and be careful.
For use with machine Code Number: 11147, 11309
For use with machine
• Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
• World's Leader in Welding and Cutting Products •
Copyright © 2006 Lincoln Global Inc.
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Document Outline
- Master Table of Contents
- Saftey
- 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 is dead - no welding output and no wire feed when gun trigger is pulled.
- No welding output but wire feeds normally when gun trigger is pulled.
- Wire feeds but welding output is low causing wire to “stub”. Welds are “cold”. Machine cannot obtain full rated output of 350 amps at 32 volts.
- The output voltage and wire feed is present continuously or pulsing when gun trigger is NOT activated.
- The output voltage is present continuously when gun trigger is NOT activated. The wire is not feeding.
- No control of arc voltage. Wire feeding is normal.
- There is no gas flow when gun trigger is pulled. Wire feeds and weld voltage is present.
- There is no voltage available at the 115VAC receptacle.
- No control of wire feed speed. Other machine functions are normal.
- There is no wire feed when gun trigger is pulled. Normal open circuit voltage is present.
- The machine stops feeding wire while welding.
- The arc is unstable and or “hunting.”
- Weld bead is narrow or ropy. May have porosity with electrode stubbing into plate.
- The contact tip seizes in the gas diffuser.
- The welding arc is variable and sluggish.
- The arc striking is poor.
- While loading wire, the rear drive rolls stop while pushing wire through the torch.
- While loading wire, the wire bird nests before the wire gets all the way through the torch.
- While loading wire the wire bird nests if the wire misses the outlet guide while shooting the gap in the torch.
- Acr length varies while welding (arc length is not constant).
- During welding the wire continues to burn back to the tip.
- Wire bird nests while welding.
- Section G - Electrical Diagrams