water going on and off

[Joseph Gore]

My water will shut off after a short time then start up again after a minute or so the press switch is new its a 3 wire system i put a back flow preventer at the tank hoping this would solve the problem but the water still goes on and off could this be a control box issue?

 

[Reach4]

Is your control box electronic; does it have a display?

What does your pressure gauge do during this process?

How large is your pressure tank?

 

[Sponsor]

 

[Joseph Gore]

Box is not electronic gauge goes down to zero when this happens but press reg is still calling when water comes back gauge goes back up i can hear a buzz up above where control box is

 

[Reach4]

Pressure tank?

How quickly does pressure gauge rise when the pump turns on? I am guessing very rapidly.

Sounds like the pressure tank is missing, clogged, or waterlogged.

 

[Joseph Gore]

There is a pressure tank 30 gal wonder if it need to be replaced any way to tell?

 

[Joseph Gore]

Its a precharged water system tank

 

[Joseph Gore]

Pressure comes up pretty quick

 

[Reach4]

Turn off the pump, and open a faucet to make the pressure gauge go to zero.

With a tire air pressure gauge. Measure the air pressure on the Schrader valve on the end of the tank. It should read 2 PSI loser than the pressure that the well water pressure switch turns on at.

If water comes out or the pressure is zero, the tank is shot. You may be able temporarily work with that bad tank by filling the tank with air before turning on the pump. If the bladder/diaphragm has a small hole, it may take a while to get enough water out of the wrong side of the bladder/diaphragm. You will probably need to add air frequently until you get the tank replaced.

This may be the time to go to a larger pressure tank. Your tank should let the pump turn on for at least a minute each time it turns on at the low pressure setting until the high pressure setting is reached. 30 gallons is a bit smaller than average I think.
That tank when operating properly might have a 7 gallon draw down. So if your pump provides 7 GPM, then it is probably sized OK.

Do some reading on pressure tanks. Well-X-Trol is the leading name, but it is pricey.

 

[Cacher_Chick]

Sounds to me like the overload on the motor is tripping. A capable person can measure the current draw of the motor and compare it to the manufacturer's specifications.

 

[Joseph Gore]

Thanks guys