Espresso machines which are compatible with the AquaClean filter will show the text 'Install or Activate AquaClean Filter?
 

Always prepare the AquaClean filter before using it. Shake it for 5 seconds, immerse it upside down in a jug with cold water and wait until no air bubbles come out.

Place the filter into the water tank and start the installation. After a correct installation, the 'AquaClean 100%' icon will be visible in the display.