It's already pretty erschwerlich the filter to run to bekommen.Es is no evidence to that you have to fill it with water (no mark for water level) .Zudem work the hand pump only schwergänglich low Saugleistung.Auch one can imagine the finger times sore pumps, because the printhead liegt.Ist just behind the water connections entlich then the time has come, this is the filter with water and fully inflated there once a lot of dirt from the cleaned Filter.Und the filter after every reinigen.Die filtering performance itself is not so convincing, despite regular change of Filtermaterials.Die software can be still unable to update Personally, I'd lay the filter a second time and certainly not for the price.