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!