QUESTIONS
The following can cause problems with welding: Fittings, welding materials, environmental factors,
power supply and welding technics. User must try to improve welding conditions.
A、Difficulty Arcing-striking
1) Make sure the earth cable is clamped to the work piece.
2) Check each connection point of earth cable.(pull to make sure tight connection)
3) Welding torch tightened on machine.
B、Output current cannot reach rated current
The supplied voltage is different from the rated will lead to unconformity of the output current and
the adjusted current. When Supplied voltage is lower than the rated, the max output current will be
lower than the rated.
C、Current is not stabilized when machine is being operated.
This can be caused by the following:
1) Supply voltage is not stable.
2) There is harmful interference from supply voltage or other equipment.
3) Bad earth connection.
Hot/bad connections or points on earth cable or torch can cause welding current to drop or be
unstable.
D Welding has air hole (porosity).
This happens if not enough shielding gas is supplied around the weld or foreigner gasses enter
the weld:
1) Check that the gas supply is flowing sufficiently out the torch.
2) Surface of welding material has oil, stain, rust, lacquer or other impurity.
3) Wrong welding gas is being used or contaminated gas.
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