The copper wire gets coloured

Possible 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 rollerhead, and also the lower welding roller.
  • see also Lower welding arm/welding roller get warm/hot.
• Check the colour 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.