Thanks in advance to anyone who can help me. I own an older country home. I have been gradually upgrading the water system for 2 years, but this problem persists unaffected. After starting normally at 40psi (pressure switch is 40-60, and brand new), the shut off is always rough with several fast stops and starts until finally quitting. The shallow well jet pump stops at the proper pressure, (60psi) as it should. The pressure tank is 1 year old, rubber bladder and filled to 38psi. I replaced the foot valve at the bottom of the well two years ago and the suction pipe is all new up to the pump, no leaks there or loss of prime. The pump is older, but pumps up quickly and could go well past 60psi, so I think it's not the problem. I moved the small pressure line that controls the pressure switch off the pump housing and relocated it several feet away at the pressure tank, this may have helped a small amount? Water pressure in house is good. Pump does just what it should except for the rough shutdown. This is my problem and I am stumped. I want the higher pressure (40-60) because of distances and age of water lines in the old house. Any ideas or suggestions would be greatly appreciated. Rod K.

Check line to pressure switch to see if it clear. Sounds like it is partially blocked with rust, mineral deposits or sand.

How far from the pressure tank is the switch? It should be on a line only a few inches long and within a foot or two of the tank.

Do you have a filter or softener?

Take a look at this thread. It is somewhat simliar to your problem. I remember this one because I had never thought that locating the switch some distance from the tank would be a problem.

https://www.askmehelpdesk.com/plumbing/moved-well-tank-now-pressure-builds-up-too-high-trips-relief-valve-567729.html

Jlisnbe

What do you think would happen if the line to the switch had air trapped in it? Seems to me it could cause a "bouncing" effect on the contacts.

Interesting. It would be possible, I suppose. This is a strange one. The only connection I have been able to make has been to the link I posted above. I hope Fix will let us know how this resolves.

I'm not totally on to the plumbing part of chattering relays or solenoids, but electrically
It's a low voltage situation that causes a magnetic coil to do this. If all other suggestions
By my friends do not produce any solutions. Try troubleshooting the elec. cont. sys.

Just an update on my chattering switch problem. Worked again this weekend on well. The pressure switch was located several feet away, mounted directly on the side of the pump motor. A small plastic pressure line ran from the switch over to the pressure tank fill pipe. This line was clean, with excellent flow when I took it off. I relocated the pressure switch onto the pipe filling the pressure tank. It now sits on a 6 inch pipe nipple because that's what I had laying around. The switch is only inches away from the pressure tank now. I turned the power back on, waited with much anticipation for the pump to shut off and, katick, katick, katick,, katick, the pump jerked to stop. No change. Could the small amount of air trapped in the pipe nipple still cause the problem? Maybe there is something wrong with the jet pump, it's about the only thing left I haven't messed with. Anyhow, Thanks for all the ideas. Keep em' coming. Rod

Fix, I should have thought of this first thing. Take the cover off your switch and watch the points. When the system reaches cut off pressure, they should open once and be done with it. See if they are opening/shutting rapidly. If they are not, then your pump would seem to be the problem. If they are, then we keep looking at the switch.

And while we're talking about the easy things to do, if the points are doing what I described above, then turn off the power, then give the large center nut a half turn clockwise. While you are at it, give the smaller nut a half turn clockwise. My only thought there is that perhaps something is happening at the preset pressures that won't happen at a different setting. A half turn won't change your settings enough to notice. It probably won't work, but as I said, it's easy enough to do. Worth trying while you have the cover off anyway.

As stated before,a small adjustment to the pressure cutoff sw, may be the answer.Also
Does this unit have a differential press. Adjustment? And is the pressure suddenly
Dropping off causing the pump to restart?

Have no well water. I turn on the power and I get a clicking/buzzing out of the pressure switch or its coming from the control box. My pump is in the well.
Please help

Sorry to be so long in replying. First step is to check your switch. Pull the grey cover off and eyeball the four sets of points. They should be touching. If they are, then you begin to suspect the control box.