CARBONE Digi-Tig250ACDC, Operator'S Manual

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D-5 TROUBLESHOOTING D-5
Observe all Safety Guidelines detailed throughout this manual
TIG MODE PROBLEMS
PROBLEMS (SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED COURSE
OF ACTION
Black areas along weld
bead
1. Clean any oily or organic contamination
from the work piece.
2. Tungsten electrode may be
contaminated. Replace or sharpen.
3.Check for contaminated gas or leaks in
the gas line, torch, or connections.
4.Gas shielding may be insufficient.
Increase gas flow; reduce tungsten stick
out beyond gas cup.
Weak high frequency -
machine has normal
welding output.
1. Check for poor connections in the
welding circuit.
2. Gas shielding may be insufficient.
Increase gas flow; reduce tungsten
stick out beyond gas cup.
3. Check for work and electrode cables in
poor condition allowing high frequency
to "Leak Off".
4. Keep cables as short as possible.
5. Check Spark Gap operation and setting
(0.5mm).
High frequency "spark" is
present at tungsten
electrode, but operator is
unable to establish a
welding arc. Machine has
normal open circuit voltage
(refer to Technical
Specifications in the
Installation Chapter).
1. The tungsten electrode may be
contaminated. Replace or sharpen.
2. The current control may be set too low.
3. The tungsten electrode may be too
large for the process.
4. If a helium blend is used as a shielding
gas, then reduce the percentage of
helium.
If all recommended possible
areas of misadjustment
have been checked and the
problem persists, Contact
your local Authorized Field
Service Facility.
Note:Both the Hand and
Adjustable foot control
work in a similar manner. For simplicity, the following
explanation will refer only to "Ampcontrol", meaning both Foot and Hand models
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely,
contact your Local Authorized Field Service Facility for technical troubleshooting assistance before you
proceed.