Air in water

Discussion in 'Pumps and Tanks Well Forum & Blog' started by tlsargent, Jun 9, 2005.

  1. tlsargent

    tlsargent New Member

    Joined:
    Jun 9, 2005
    I have a well with a submersible pump. The pump is approx. 450' deep. I recently started getting air in my water. When i turn the water on it seems to have air in it for a few minutes then it clears up. If i turn the water on again more than approx. 30-60 minutes later it has air in it again. I have a Welltrol tank. I pressed the air valve on the top and just air came out, no water. The pressure is around 38 psi, the cutoff is set at 30 psi. Could the tank be bad? it is approx 9 years old. Thank you.
    Ted
     
  2. Gary Slusser

    Gary Slusser That's all folks!

    Joined:
    Aug 31, 2004
    Occupation:
    Retired
    Location:
    Wherever I park the motorhome.
    If the 30 is the cut off setting, then your switch isn't set right IMO. You should have a 20 psi difference between the high and low settings. So run water until the pump starts and shut off the water. Note the pressure reading the pump comes on at and then the reading it shuts off at. Then shut off the water to the house past the pressure tank. Then drain the tank and adjust the ar pressure to 1-2 psi less than the lower pressure reading OR... if it is less than 30 psi, add air to 29 psi with no water in the tank. Then turn the power on to the pump, you shut it off before draining the tank and adjust the switch to sotp the pump at 50 psi. Run water until the pump comes on and adjust until it comes on at 30 and off at 50.

    Then we get into this air in the lines....if as you added air to the tank, you had water going out the drain and the tank still has water in it, you need a new tank because the bladder is broken. If not and the tank was empty, we look for air entering the line from the well. Air could be sucked into a loose fitting, bad pitless oring, split in the drop pipe or a fitting... or, the water in the well is being sucked down to the inlet of the pump. or maybe the pump is cavitating. Or you have methane in the water. All that may not be much help but if you run water and remove the well casing cap and listen intently for water running in the well when the pump is running, since there shouldn't be, you've identified a leak in the drop pipe or pitless and need to pull the pump to fix it.

    Gary
    Quality Water Associates
     
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