Lincoln Electric INVERTEC V155-S 11327 Operator's Manual page 22

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Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
PROBLEMS IN TIG WELDING
Oxidation
Tungsten inclusions
Porosity
Hot cracking
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
TROUBLESHOOTING
POSSIBLE
CAUSE
1. lnsufficient gas.
2. No protection on the back side.
1. lncorrect electrode sharpening.
2. Electrode too small.
3. Operating failure (contact of the
tip with the workpiece).
1. Dirt on the edges.
2. Dirt on the filler material.
3. Excessive travel speed.
4. Current intensity too low.
1 Unsuitable filler material.
2. High heat supply.
3. Dirty materials.
CAUTION
V155-S
RECOMMENDED
COURSE OF ACTION
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Lincoln Authorized
Field Service Facility.
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