Posted 07-19-2004 at 04:33:31
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Not sure what the problem is with your filtering system, but I'd say there is one.
I use a 20 micron (prefer 30 micron when I can find them, but they're harder to find around here) filter as a pre-filter, followed by a 5 micron filter.
In the summer time, when I guess we're using more water and the water table is lower, the pre-filter gets sandy (even muddy sometimes) and I have to change filters every 60 days or so. In the winter time it is probably more like every 4 months.
At not time, even when we're using heavily and water is low, do we have to clean the washer screen. I can even immagine that, since the screen is so coarse. you must be getting water going around your filter system somehow or a total failure of the system. I'd get it checked, because even a 20 micron filter would be stopping particles too small for your washer screen!