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Thread: Pressure Guage Not Working- Pump Running

  1. #1

    Default Pressure Guage Not Working- Pump Running

    I have a couple issues here:1) Loss of water pressure 2) Pressure Guage Not Working

    I have a jet pump with a 30/50 pressure switch. In the past the pump would run on a 20/40 cycle, not 30/50 like the swich was manufactured to do. Of late the pump seemed to run alot more frequent, so after checking i noticed that the guage was sticking at 40lbs.

    I replaced the guage tonight and now it won't register at all. THe pump runs, builds up the required pressure and then shuts off, but the dial shows 0. I put the old dial back on and now that only shows zero as well.

    Regarding the pressure lost- I've noticed that while in the shower, once the pressure drops, the water trickles out of the shower so bad that the shower squeals, until the pump runs and builds up pressure. In the past, you never noticed a pressure drop prior to the pump running.

  2. #2
    That's all folks! Gary Slusser's Avatar
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    You may have lost prime, did you prime it? If you can't prime it you have a leak, or it couldn't lose prime.

    You may have a blocked jet in the pump if it is a single line jet pump or in the well if you have a two line jet pump.
    Gary Slusser Retired (= out of business)
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  3. #3

    Default Jet Pump

    Its a sinle line Jet Pump. When I woke up this morning it showed 25 psi. As we were using the water , the pressure dropped to 20 psi and the pump kicked on and ran for a few minutes and kicked off, but the guage only showed 25 psi. How do you prime the pump. Theirs a threaded plug at the top that has a "Prime" sticker by it. The problem is that when you remove the plug, there isn't a hole drilled through the pump body to add water??

  4. #4
    That's all folks! Gary Slusser's Avatar
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    Use a screw driver to clean that hole under the plug, they rust shut over time.

    then add water though the hole until it overflows, watch the level and if it goes down, add more and repeat until it holds. If it doesn't hold fill, you have a leak.

    You could be running out of water in the well.
    Gary Slusser Retired (= out of business)
    Click Here to learn how to correctly size or program a water softener.
    CAUTION, as of Nov 12 2013 all YouTube videos showing how to rebuild a Clack valve have an error in them that can cause damage.

  5. #5
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    If the pump builds pressure, it's primed already.

    I'm not sure how you could make two gauges read zero when the pump is building up and shutting off. Gauges are very cheap, that may be the reason your not having any success with them. When you pull the gauge out next time, be sure the hole it screws into is clear through into the pump casting.

    bob...

  6. #6

    Default Don't know If its a shallow well or deep well jet pump?

    I'm not sure if my pump is a shallow well or deep well. I've attached pictures of it. I thought it was a single line, but now I'm not sure. I guess that's ejector on the front?? Help.. Its a Dayton 9K573 1/2 HP.
    Attached Images Attached Images   

  7. #7
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    It's a shallow well jet pump. Teel is a name Grainger uses to disguise the real brand name of one of many pumps they sell and label. That thing resembles an old Rebel which was one of Flint and Wallings cheap pumps that they didn't dare put their name on. That doesn't mean anything today, cause it's probably built better than anything you could buy today.

    I still can't help you with your going to zero problem though. It makes no sense.

    bob...

  8. #8

    Default Pump Pressure

    Thanks alot- The pressure seems to be holding ok now. It just kicks on at 30 psi and off at 40. I was thinking about replacing the pressure switch.
    As far as it being built well, it runs pretty good its just REALLY loud. Wonder if it can be lubercated or something?

  9. #9
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    Chances are that motor has ball bearings. Putting oil on them would ruin them for good. They need grease. Fractional horsepower motors are not greased in the field. The motors are taken apart and new bearings are installed.

    bob...

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