Accordingly, a short time later, the cabin of the small HSC milling machine and that of the Bf20 Vario were also vacuumed. The vacuum cleaner filters ended up in the trash and I have the H13 final filter a 2-stage filter system with G4 and F9 upstream so that the filter life remains correspondingly high. In addition, the belt sander still got a trunk for suction.
Meanwhile we write autumn 2019 and I got among other orders purely for illuminated signs.
January 2020 the Bf20 Vario got an update. 3Kw Chinese spindle with 24.000U/min. This time of course water cooled. Finally the whistling noise of the air cooled spindle was gone.
It is said that activated carbon filters can filter even molecules. Odors, volatile solvents ect. Pp. This may be true, but the use of activated carbon filters has worsened the air quality because coal dust was blown out. So I had to remove the filter again.
The air quality was much better after the major update to the filters and fan. It felt like it could stay that way. But I wanted more. Bad mistake.
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