How long do the filter sleeves last - This depends on micron level selection and what size and amount of particulates it is subjected to. For example if you have relatively clear water (i.e rainwater supply with clean guttering and storage tank) you may get away with a single filter with a finer sleeve change twice a year. If you have uncleaned collection and storage or source water from a creek you would more than likely need to have two inline filters so that you can filter in stages to avoid "loading" and premature blockages. In this case the first pre-filter would be changed more often and the second sleeve less often. HINT - remember to purge off the solids collected at the base of the bowl via the drain screw or tap fitted, this will also rinse off the outside of the sleeve.
When to change the filter sleeve - This can be detected in several ways, if you have inlet and outlet pressure gauges fitted its when there is a 1 Bar pressure difference on all domestic units, or if you notice a drop in pressure inside the house as the sleeve is becoming blocked, or when you can visually see the sleeve is dirty or damaged by looking inside the clear bowl.
If you need a manual for your system, contact us so we can email you a copy.
We are happy to discuss and provide solutions to your water quality concerns. Feel free to complete our no obligation request form so we can come back to you.