Hello,
I recently had my well pump go bad after 18 years of trouble free service.
My son and I were able to pull it out and I was able to get another pump almost
identical and replace it. We replaced the pressure switch and the air tank at
the same time. Since then, the points on the pressure switch have burned up
twice about a month apart. I have checked the pressure on the air tank and it
is 26-27 psi with the power killed to the pump and no water pressure on the
gauge. The switch is set to drop out at 50 psi and pull in at 30 psi. I read
that the tank pressure needs to be 2 to 3 lbs lower than the pull in pressure
and I have that. Can anyone shed any light as to why my switches are only
lasting a month? What does the size of the tank have to do with it? I put
back a 42 gallon tank that appeared to be the same size as the one we removed.
The pump is a 1 hp submersible pump 390 feet down in the well. I am wondering
if I need to upsize the air tank? Any help will be appreciated greatly.

thanks,
Bobby