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Well pressure switch question

eca7891

Keeper of useless knowledge
Full Member
Minuteman
Nov 7, 2019
2,270
2,755
So my well pressure switch just burned up on me and I need to her a new one.

will it cause issues going from a 20/40 switch to a 30/50.

Tfe 30/50 is in stock and the 20/40 is special order.

Thanks in advance.
 
It should be fine. The higher you set it the better your household pressure. Expansion tank should be charged 2psi less than switch setting.
 
The Hide for the win, once again.
 
Well up and running.

water is flowing.

Thank you!
To clarify- Close valve to house
Turn off power to pressure switch
Drain pressure tank
Replace pressure switch
Adjust air pressure in pressure tank to 2 psi less than cut-in pressure( 28 for 30-50 switch)
Turn power back on and open valve to house.
Just changing the switch, will get you water, but correctly setting the precharge is important.
 
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Well….

That’s not exactly how I went about it.

I turn the switch to the pump off and verified via meter.

Turned off the valves feeding the house and the sprinklers.

Removed the old switch and installed the new, wired it up.

Checked everything and turned the power back on.

I heard the pressure build up. Opened all the valves. Tested the faucets. Checked the water pressure (45 psi).

put the cover back on and called it good.

Should I be checking something else?
 
Well….

That’s not exactly how I went about it.

I turn the switch to the pump off and verified via meter.

Turned off the valves feeding the house and the sprinklers.

Removed the old switch and installed the new, wired it up.

Checked everything and turned the power back on.

I heard the pressure build up. Opened all the valves. Tested the faucets. Checked the water pressure (45 psi).

put the cover back on and called it good.

Should I be checking something else?
With my sized tank, w no water in it I charge the badder at 34 psi. Then, turn the well pump on.
 
Well….

That’s not exactly how I went about it.

I turn the switch to the pump off and verified via meter.

Turned off the valves feeding the house and the sprinklers.

Removed the old switch and installed the new, wired it up.

Checked everything and turned the power back on.

I heard the pressure build up. Opened all the valves. Tested the faucets. Checked the water pressure (45 psi).

put the cover back on and called it good.

Should I be checking something else?
I would check and see how many amps your pump motor is pulling..... A motor pulling high amps will tend to wear out the contacts quicker.
 
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Hmm.

only info I have readily available is it’s on a 15amp 220 breaker.

Switch was 17 years old
 
You would have to amp the motor while its running under a full load. If your breaker hasn’t tripped then you aren’t hitting 15A, so I wouldn’t worry about that part.
 
The air pre-charge is important to keep the pump from cycling on/off too frequently. I know you said the switch was 17 yrs old, but frequent cycling will burn up the contacts quicker. If your pump isn't cycling on/off a lot when in use then it's probably OK.
 
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