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    Scotty Lea's Avatar
    Scotty Lea Posts: 1, Reputation: 1
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    #1

    Apr 17, 2009, 06:51 PM
    How to install a pressure switch for my well
    I am looking for the answer to installing a 30/50 pressure switch from start to finish. I under stand you need air in the pressure tank 5 lbs less than the cut in or on . Does anybody know how to correctly install and calibrate this the correct way so I can get this done right the first tim??
    21boat's Avatar
    21boat Posts: 2,441, Reputation: 212
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    #2

    Apr 17, 2009, 07:53 PM

    It 2 lbs less then the low cutoff setting . Here's a site to guide you and can use for reference. It easier then writing it all out

    Dictionary of Well Water Pump Controls & Switches - private well pump and well system do-it-yourself repair guide

    http://inspect-ny.com/water/WaterTankAir4.htm

    YouTube - Pressure Tanks and Private Well Systems

    http://www.youtube.com/watch?v=ggn0h...eature=related

    http://www.youtube.com/watch?v=wxhas...eature=related

    Any questions get back.
    jlisenbe's Avatar
    jlisenbe Posts: 5,020, Reputation: 157
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    #3

    Apr 18, 2009, 04:00 AM

    The correct tank setting is two pounds under the cut in pressure, not the cut off pressure. This is done by draining the tank and then setting the pressure to, in your case, 28 pounds.

    Installing a new switch is fairly simple if you are comfortable with the electrical side of things. Make sure you wire it in the same fashion as your old switch. Looks like 21 sent you some good sites. The one from inspect-ny.com is especially useful.
    lx_njr@yahoo.com's Avatar
    [email protected] Posts: 2, Reputation: 1
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    #4

    Apr 5, 2010, 09:08 PM

    I am having problems with my system I have enstalled a pressure switch and it did nothing I was told that the pressure tank needs 28 pounds of air in order for it to work is this true can someone please help
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #5

    Apr 6, 2010, 05:43 AM
    Quote Originally Posted by [email protected] View Post
    I am having problems with my system i have enstalled a pressure switch and it did nothing i was told that the pressure tank needs 28 pounds of air in order for it to work is this true can someone please help
    Ifyour control box is a 30/50 the setting's correct. This setting is made with the power off and the pressure bled off and is 2 PSI under the cut in point of the control box. Good luck, Tom
    jlisenbe's Avatar
    jlisenbe Posts: 5,020, Reputation: 157
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    #6

    Apr 6, 2010, 09:33 AM

    Lx, the pressure in the top of the tank does not directly impact the operation of the switch. In other words, changing the pressure a few pounds one way or the other will not cause the switch to operate or fail to operate. You need to remove the grey cover (power off) and see if the points are closed. If they are not, then check the little tube leading to the switch to see if it might be clogged.

    If they are closed, then use a voltmeter to make sure power is getting to the wires leading to the pump.

    One more item. Some switches have a reset lever on the side. Make sure the work the lever a couple of times to make sure the switch is set to work.

    I might add that adjusting the pressure at the top of the tank is good advice. It should always be done. My point is just that you will not fix your switch by doing that.
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