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Arc wanders during DC welding.
1. Poor gas flow.
2. Incorrect arc length.
3. Tungsten incorrect or in
poor condition.
4. Poorly prepared
tungsten.
5. Contaminated base
metal.
6. Contaminated filler
wire.
7. Incorrect filler wire.
Arc difficult to start or will not start DC welding.
1. Incorrect machine set
up.
2. No gas, incorrect gas
flow.
3. Tungsten is
contaminated.
4. Incorrect tungsten size
and or tungsten being
used.
5. Loose connection.
6. Earth clamp not
connected to work.
44
ARC 170 DUAL VOLTAGE ARC/TIG WELDER
For technical questions call 1-800-665-8685
1. Check and set the gas flow between
12 to 21 CFH flow rate.
2. Lower torch so that the tungsten is
off of the workpiece 0.07 to 0.19
inches.
3. Check that correct type of tungsten is
being used. Remove 25/64" (0.393")
from the weld end of the tungsten
and resharpen the tungsten.
4. Grind marks should run lengthwise
with tungsten, not circular. Use
proper grinding method and wheel..
5. Remove contaminating materials like
paint, grease, oil, and dirt, including
mill scale from base metal.
6. Remove all grease, oil, or moisture
from filler metal.
7. Check the filler wire and change if
necessary.
1. Check machine set up is correct.
2. Check the gas is connected and
cylinder valve open, check hoses, gas
valve and torch are not restricted.
Set the gas flow between 21 - 32 CFH
flow rate.
3. Remove 0.39 inches of contaminated
tungsten and re grind the tungsten.
4. Check and change the size and or the
tungsten if required.
5. Check all connectors and tighten.
6. Connect the earth clamp directly to
the workpiece wherever possible.
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