Pumping with the Vario becomes increasingly difficult and water output decreases. What can I do?
Unscrew your Vario and remove the ceramic prefilter disc from the filter housing. Scrub off any dirt particles from the prefilter with the cleaning pad that was packaged with the Vario. Put the cleaned ceramic prefilter disc back onto the filter housing in LONGER LIFE mode and reassemble the filter. If the pumping is not easier, turn to FASTER FLOW and reassemble. If pumping is easier, the ceramic prefilter disc needs to be scrubbed deeper or it should be replaced. If the pumping is not easier in FASTER FLOW, the pleated filter is clogged and needs to be replaced.