We had quite an exercise to get the unit working in the beginning but when we finally got it to work it produced plenty of good water
The problem now is we can not stop the leaks
around the caps of the pressure tubes were the end caps fit into the tubes. No amount of new o rings make a difference. This was one of the original problems which we solved
by putting 2 o rings on instead of 1 but that is not working now.
With all the mucking around We have decided that the only answer is to buy the tubes and membranes from another supplier.