Jet pump pressure setting

Discussion in 'Pumps and Tanks Well Forum & Blog. Water is life.' started by Eric01234, Aug 1, 2020 at 12:33 PM.

  1. Eric01234

    Eric01234 New Member

    Joined:
    Saturday
    Location:
    Alberta
    Hello,

    Recently got a new jet pump to replace my old jet pump and I'm having trouble with the installation instructions :

    "Observe the pressure gauge on the pump case while the pump is
    pumping and continue to adjust the control valve so that the pressure
    gauge reads approximately 25 psi and flow and pressure are stable."

    No matter whether I tighten or loosen the pressure control valve the pressure gauge maintains 50psi, however if I tighten it all the way the pump starts to rapidly turn off and on.
    What am I missing? How do I get down to 25 psi on the gauge? When I watch YouTube videos it seems as though people just prime their jet pump, tighten the prime plug and they're good to go so I'm not sure if I'm overthinking these instructions or just not understanding.
    Any advice would be greatly appreciated.
    Thanks
     
  2. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    Open up more water faucets while adjusting the back pressure valve if this is a two pipe jet pump system.
     
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  4. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    I suspect that may be talking about a setup where you have a pressure gauge in a special place, rather than the the pressure gauge a the pressure tank. I have never adjusted a jet pump regulator or backpressure valve.
     
  5. Eric01234

    Eric01234 New Member

    Joined:
    Saturday
    Location:
    Alberta

    I am on a 2 pipe system.

    I shut off the well to the pressure tank and opened all my faucets, whatever I do I can't get the back pressure below 37-40 psi, I don't know how to bring this number down to 25psi, according to the manual it's possible but I can't figure out where I went wrong. I bought the same pump that was in here before so I'm not sure what the problem is. Is it possible this pump is too powerful for my well?
    Here is the manual :

    https://redlionproducts.com/media/67777/232892_rl_rjc-100_series_manual-2-.pdf
     
  6. Eric01234

    Eric01234 New Member

    Joined:
    Saturday
    Location:
    Alberta
    Thank you for the suggestion, I tried this by opening every faucet in the house but no luck sir.
     
  7. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Sounds like a nice problem to have. I would declare success.
     
  8. Eric01234

    Eric01234 New Member

    Joined:
    Saturday
    Location:
    Alberta
    I'm wondering if it has anything to do with the flow rate of the well? It's has 30gpm flow according to the drilling data sheet.

    Any negative implications from running above the manufacturer recommendations?
     
  9. fitter30

    fitter30 Active Member

    Joined:
    Feb 2, 2020
    Occupation:
    Retired service tech
    Location:
    Peace valley missouri
    Look at pages 11&13 of the install manual. 11 shows the location of the control valve. 13 is the adjustment of the valve.
    did say how deep the well is to decide what orifice to use.
     
  10. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Is the pressure gauge you are looking at "installed into the 1/4" NPT hole on the front of the casing directly in front of the priming port"? Maybe that gives about the same pressure as what the pressure tank sees, and that location would not be significantly different. It is a mystery to me why that 25 psi figure would be written.
     
  11. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    If loosening the bolt on the backpressure valve doesn't bring the pump case pressure down, there is either a restriction or the back pressure valve is not opening up as it should and maybe defective.
     
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