Ray,IN Posted September 3, 2021 Report Share Posted September 3, 2021 4 hours ago, LarryN said: It has been a while for me on this subject but wanted to share that my conversion of a highway bus to RV about 12 years ago, included a variable flow paired with an accumulator tank. I had an accumulator tank and a standard water pump in our houseboat, and it was great. However, after burning out two pumps in the bus conversion, I called the manufacturer. They pointed out that in the installation literature, it warned that variable speed pumps are not meant to be hooked with an accumulator tank. Replaced with a standard pump and all was well. As I recall the variable speed pumps sense the back pressure of the accumulator and the result is bad. Too long ago to quantify what "bad" was. Your result may vary. A accumulator tank causes a variable speed pump to run at a lower RPM for a longer period most of the time, which is harder on the electric motor. The variable speed pump was designed to eliminate the accumulator tank. Quote 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
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