While pushing the key „wire drive manual“, the wire tensioning cylinders running against mechanical end stop. Message „”Wire break“” is displayed.

Possible cause:

  1. Machine control is not „ON“
    (help: key „wire drive manual“ is shown dashed in the display)
  2. The analog sensors (B1 & B2) are not properly adjusted. See the following description.
  3. Pendulum head turns, but the copper wire has slippage:
    • increase the wire tension for the chopper unit by 0.2 bar (min. 2.0 – max. 2.5bar)
    • groove worn out, recess the welding disc.
  4.  Converter U4 defect.

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