If you notice a significant difference in the filtration rate of the Black Berkey filters, this is a sign that it’s time to prime them again. Before you start cleaning, you should first try to resolve this by priming the Black Berkey filter elements again. You shouldn’t clean them too often; when using tap water, once every six months is sufficient. If priming does not improve the filtration rate, then it is time to clean the filters. However, you must prime them again after cleaning.
Priming ensures that the air is expelled from the filters, which then allows them to flow through more quickly again. After a while’s use, the air gradually builds up in the filters again. You can do this by Priming Button, the Black Berkey Primer or the Blue Primer Rite use. See also the instructional videos.
If you do need to clean the filters, please refer to the instructions under the heading “Cleaning, maintenance and storage”.