Gary,

I have a Pure Water Enterprises water filter on my coach also. I backwash it about twice a year. It keeps the water & ice fresh and clean. My model # is BF-250. I backflush it for about 30 minutes with the water hose connected to the city water connection on my coach. I have some paperwork on it if you don't have any paperwork on yours let me know and I will fax it to you.

See you in Tenn.