Yeswelder CT2050 Operator's Manual page 50

TROUBLESHOOTING
TIG WELDING ISSUES
PROBLEM
Poor work clamp connection.
Poor starting.
Start current is too low.
Oily or organic contamination on work
Tungsten electrode may be contaminated.
Black area along
weld bead.
Leaks in gas line or torch connection.
Gas tank is near empty.
Contaminated base metal.
Tungsten is contaminated.
Unstable Arc.
Arc length too long.
Tungsten incorrect or in poor condition.
Insufficient gas shielding.
Contaminated gas or leaks in gas line,
torch, or connections.
Arc wanders.
Poorly prepared tungsten.
Contaminated base metal.
Contaminated/Incorrect filler.
POSSIBLE CAUSE COURSE OF ACTION
Check and secure work connection.
Increase Start current.
Clean work piece.
Grind to clean electrode.
Check connection.
Replace the gas tank.
Remove materials like paint, grease, oil, and dirt, including
mill scale from base metal.
Remove 25/64" of contaminated tungsten and re-grind the
tungsten.
Lower torch so that the tungsten is off of the work piece
5/64"-13/64"(2-5mm).
Check that correct type of tungsten is being used. Remove
tungsten 3/4" from the weld end
tungsten.
Check and set the gas flow between 20-30cfh flow rate.
Check gas line & connections.
Recommend tungsten grind angles range from 15 to 60 de-
grees based on the type of metal, joint design and penetra-
tion you desire. Standard is 30 degrees.
Remove contaminating materials like paint, grease, oil, and
dirt, including mill scale from base metal.
Check the filler wire and remove all grease, oil, or moisture
from filler metal.
47
and re-sharpen the