I just had my pumped replaced a few months ago.
And, yes, there is no "control box." The starter switch is electronic and
is sealed with the motor. The new pump is somewhat shorter than the 30
year old model it replaced. It also is water lubricated so that when it
eventually fails it will not dump oil into the well.
Maybe it's me, but the new one seems to transmit a lot more noise up the
pipe into the tank than did the old pump.
The wiring is as you describe. The pressure switch is two pole and
switches both sides of the 240 volt circuit.
My pump was replaced on a Saturday on a near "emergency" basis. "Next
time" I will look into a three phase motor with a "variable frequency" drive
controller at top. This would cause the motor to start and stop slowly.
I understand from "this old house" that you can use a VF drive to keep
constant pressure (pump goes faster as demand increase, slower if only a
slight demand), off if no demand.
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