Lincoln Electric INVERTEC V205-T DC Operator's Manual page 30

V205-T DC & V205-T AC/DC
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.
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
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.
5. Insuffient gas flow rate
1 Unsuitable filler material.
2. High heat supply.
3. Dirty materials.
CAUSE
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Lincoln Authorized
Field Service Facility.
CAUTION
E 3
TROUBLE SHOOTING
RECOMMENDED
COURSE OF ACTION