I live on a lake and get water from said lake. We have a jet pump that has a 20PSI working range. Right now, it cuts on at 30psi and cuts out at 50psi. How high can I safely adjust it before we have other issues? Everything is copper piping.
We just moved in. The water pressure was really low. The pump would come on at 20psi.60 PSI, but that may not be the real issue.
What makes you think you need more pressure?
Is this a new issue?
The pressure was low, and I have adjusted it. The tank is about 1 foot diameter, and about 1.5 feet high.Do you feel the pump is cycling too often or do you feel you need more pressure? What size air control tank do you have? Is the tank free air or a bladder tank?
You could need to add air to the tank if it is waterlogged.
Sometime lake cottages might have installed a smaller system because usage wasn’t that high but a full time house will demand a larger system.
The main line to the pump is 3/4.That's one tiny tank.
With a tank that small you may get good pressure for a few seconds, but it will just drop off quickly once it's emptied, and the pump will be short cycling.
Other items to check is the intake filter that should be on the end of the line that's in the lake, and any other filters that may be in the system.
The main line from output side of the tank should have also been 3/4", then stepped down to the fixtures.
An undersized main line would be like standing on a garden hose.
A 3/4" line will have twice the flow of a 1/2" pipe.
I have not spoken to them directly about it but my one neighbour put a well in.Have you spoken to any of your neighbors about this problem? They may have already dealt with a similar problem and can often give you great advice and the name of a contractor that can fix it.
I would also check the foot valve at the end of the hose. It could be partially clogged or even partially open if a small piece of debris got sucked into the system.
The tank is small and that could be your problem. Replacement tanks are available at Lowes if you want to try this yourself. If not a well contractor would be able to solve this issue for you.
I tried asjusting it to shut off at 60psi. It doesn't seem to want to get to it, so I adjusted it to about 57psiIf its a jet pump there should be 2 lines going to the lake, one is the suction to the pump the other is the return/supply to the jet. The suction to the pump would be the larger of the two. Have you adjusted the pressure switch up and did the pressure get better? Does the pump run a long time to get to up to pressure or is it a real short cycle? If it takes a long time on the small of a tank I would lean toward the plugged foot valve or possibly a hole in the jet itself. Had that happen to a jet before, blew a hole in the side of the jet housing so it just wouldn't develop much pressure, wanted to run all the time.
My pump is as @Fireguy5674 stated also. I forget the exact depth but around 20’ sounds correct. Suction can only pull water up until the weight of the water is more than the suction can hold. A perfect vacuum is 27’ at sea level or something like that.I didn't know that. I assumed if the system had a jet it was on the end of the line and needed a supply of pressurized water to power the jet. Where is the jet located on your single line system?
My pump has a 220 degree range. It is adjustable. I have it set at about 35-55 psiMy jet is right on the nose of the pump. It is cast iron and bolted right on the impeller casting. If you are raising the water over 20+ feet the jet may have to be at the bottom of the well. Most people use submersible pumps now and they are in the well at the end of the the supply line. I am guessing that doesn't work well in a lake.
Actually I went from a jet pump to a submersible pump to to a county rural water district. Now I don't have to deal with pumps at all. Well almost anyway. I left my outside hydrants on the well for watering and such.
Swimmer, is your pressure switch a 20-40 or a 30-50? It should say somewhere on your switch cover. 57 may be all you can get out of your system for a variety of reasons. Lift, suction line size, impeller wear, etc, etc. If you have 57 psi at static, what do you have with water flowing?