On Wed, 10 Nov 2004 10:27:03 -0500, willshak wrote:

I believe that most are already factory charged to the correct pressure.
My Well-Trol by Amtrol was precharged to 30 PSI (according to the label).

True, they are precharged to a standard pressure, don't recall off the top of
my head what mine was precharged to. 30 psi precharge is good for a pump
cut-on pressure of around 32 psi. Precharge should actually be 27-28 psi for
a 30/50 pressure switch if 30 psi is the actual cut-on pressure.

The reason for suggesting raising the pressure is that the OP is using, IIRC,
42 psi as the cut-on pressure, which means that he needs somewhere around 40
psi precharge. Precharge pressure should be a couple-three psi below cut-on
pressure, so it depends on what your cut-on pressure is exactly what your
precharge pressure needs to be for optimal pump operation.

Later, Mike
(substitute strickland in the obvious location to reply directly)
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