Kinetico Plus-GX Membrane Assembly Replacement
I too have a Plus-GX system (1999 install) that we observed in 2010 the typical slow flow at faucet. We replaced the pre and post filters as normal thinking this was the issue, but continued to get slow flow. Kinetico service guy visited and said we needed new membrane (~$200.00). After reading the threads on the forum I'm now thinking maybe we have a storage tank (standard-white) or bladder issue. As I recall the service guy did not seem to remove anything from the system at the time.
Kinetico says the membrane alone is ~$200, but there is a sub-assembly component that is generally replaced at the same time that he says is ~$260 that they recommend be changed at the same time. In addition they say replacement of the membrane requires a special wrench, and that Kinetico does not sell the wrenches to the public, but rather they want their service techs to perform the task for ~$140. All total, ~$600.00 to get the system up again. I'm curious to know if the membrane is likely the cause of the slow flow. If so, does the replacement really require the special tool, or is it something a mechanically-inclined homeowner can perform successfully?
I've remoevd the GX manifold from the sink and taken the 2- new pre/post filters off. I removed the membrane cartridge from the manifold and see a 1/4" hex socket at the bottom. Could this be the sepcial wrench? Not sure how this cartridge/membrane assembly is put together. Is there a source for such info? Anyone have info on what's required for the replacement process?