Welding current not constant, welding wire breaks

Problem:

• Welding process starts but welding current is not constant. Finally the welding wire breaks.

Possible Causes & Resolutions:

• Bad condition of the lower welding roller or upper roller head. In this case, the current only flows through the welding wire and no longer over the welding roller or upper roller head. The welding wire heats up and breaks. Exchange lower welding roller. If the problem still exists, replace the upper roller head.