Sand filter backwashing question?


In The Industry
Apr 1, 2018
Bangor Maine
Turn the pump off, move handle to backwash, watch the sight glass to know when water coming out of filter is clear, pump off, then move handle to rinse, rinse for 1-2 minutes (this settles the sand back down), pump off then back to filter and turn the pump back on.

Always turn the pump off when you are going to move the handle on the multiport.


Gold Supporter
May 16, 2010
Chapel Hill, NC
You have a 2" multi-position valve on your filter. They have a big spring in there and may take some effort to push the lever down so that you can turn it to the backwash position.