I'm a klutz with regards to home repair, so sorry if this is a
silly question. I've done some web searches for my problem, but
I'm not making much headway.
Can anyone help with my home water pump / pressure switch? Here's
an explanation of the problem as I see it.
I have an in-ground (I guess, 'cause I can't see it) well pump
Inside the basement is a controller of some kind for the pump.
That connects past a valve, via a T connection to a storage tank,
which is dead-ended. On top of the storage tank is what I'm
guessing is a disconnected external pump which used to be used
for my well.
Here's a try at a diagram
|- water to house
egress | [__]
-|--------x-|-[ ]Storage tank w/ disconnected pump on top
active [ ]
x == shut-off valves
The pump control is labelled that it should cut-in at 40 lbs &
cut-out at 60 lbs. It has two screws which I'll call 1 & 2,
according to the sticker they work as follows. Turning screw 1
increases cut-in and cut-out pressure by 2 lbs / turn. Turning
screw 2 increases cut-out pressure by 3 lbs /
affecting cut-in pressure.
The instructions on the side of the water storage tank say it should
be pre-charged to the cut-in pressure of the well pump.
The problem started off as low water pressure, to the degree that
the water completely stopped at times for up to 10 minutes (I assume,
while waiting for the well pump to come on). I did some web searches
and tried the following, based on my findings.
1.) Empty storage tank w/ pump turned off and precharge it to 40 psi
2.) Turn both screws 1 & 2, counter-clockwise all the way (to 0 psi?)?
3.) Turn screw 1 20 turns (to 40 psi?)
4.) Turn screw 2 6 turns (to 40 + 18 = 58 psi?) - that's as far as it would go.
Now I don't have a water pressure problem anymore, however
now the pump seems to be running continuously. It has run all
night without shutting off.
What can I do in order to both have sufficient water pressure, and have
the well pump shut itself off when it's not needed?