Can I change the cartridge myself? 24 April 2023 06:39 Updated The cartridge can be changed by yourself because it has an integrated bayonet lock. Related articles How is the fresh water system cleaned after the filter has been installed? Is cleaning of the fresh water system with the Grünbeck water filter necessary at all after a longer standing time? What do I have to consider before winterising? Can water leak out of the system when I remove the cartridge? How can I tell that the filter needs to be replaced?