The copper wire discolors

The copper wire changes color

Cause:

• Check the unprofiled copper wire in the drum: The copper might be already oxidized.
   
• Is the welding current setting as usual, or is there any difference?
   
• Check the water flow of the upper pendulum roller head, and also the lower welding roller.
  • see related article.
     
• Check the color of the lower welding roller:
  • If the roller is yellow/blue/purple you should exchange the roller. There might be an internal defect. Send the roller to us including a correctly filled out performance sheet.
     
• Run the welder after exchanging the roller and/or water flow check, and control, if there are any abnormal hot spots on the secondary circuit.