Don't know the model but it is 7 yrs old and services a 24 ft above ground really well. I over monkeyed the handle bumping it and it is now just uselessly moves up and down without moving the fingers. Have to open the filter up and wash the fingers to get my pressure down again, so have to fix this. What am I looking at for self repair? Would like to try that rather than buy probably some really expensive stuff? Anybody got into this before? Thx for any help!