On Thu, 17 Mar 2005 06:50:06 GMT, "George"
wrote:

I know it is time to clean the pre-filter when the water
pressure drops slightly. This happens about once every two weeks to once a
month during the summer. In the winter I rarely have a problem with water
pressure. I never have to clean the filter. It has worked great for me.

You have a better filter than I do and I'm glad it works so well for
you.

Regards,

Hal