Weak or missing vacuum

Possible cause:

  • Wrong direction of rotation of the vacuum pump motor (only when machine has been disconnected from the power).
    • change phases
  • Clogged filter of the vacuum pump (or in the vacuum hose / tube).
    • replace it
  • Clogged bores in the sucker cups.
    • clean it
  • Worn sucker cups.
    • change sucker cups
  • Wrong vertical adjustment of the sucker bar.
    • see manual of welder (chapter 5.3) and learn how to adjust sucker bar upper position
  • Badly cutted blanks with lots of burrs.
    • grind / adjust cutters of slitter
  • Clogged vacuum valve.
    • clean it (see here) or replace valve (CM article No. 005925)
  • LED not “ON” when production “ON”.
    • refer to the electrical manual
  • Too tight adjustment of the blank magazine.
    • see manual of welder (chapter 5.3.) and learn how to set blank magazine correctly
  • Worn sucker rod or worn seals/bearing in the vacuum housing.
    • replace it

NOTE: Only applicable for the model X8-350!


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