To ensure an optimum performance you should change your cartridge on a regular base. The BRITA "Calendar" as featured for example on Space Saver is a manual cartridge exchange indicator. It's easy to use. Using the BRITA Calendar you can set the date for the next filter cartridge exchange. The left-hand field shows the day, the right-hand field the month (in Asia vice versa). Simply turn the two little wheels on the left and the right and set the date for the next filter cartridge exchange. If the day when you next have to change the filter cartridge is not displayed on the indicator simply turn to the next number.
Example Today is September 23rd, i.e. the filter cartridge will have to be changed on October 23rd. But because the number 23 is not shown on the exchange indicator set the exchange date as follows.
This means that your filter cartridge will next have to be changed on October 24th. A new cartridge should be primed and inserted and the exchange indicator reset as above.
Set the day for the next filter cartridge exchange by turning the two little wheels.
