Well pump chattering

Discussion in 'Pumps and Tanks Well Forum & Blog' started by markrace, Jan 9, 2009.

  1. markrace

    markrace New Member

    Jan 9, 2009
    Good morning and Happy Friday
    well maybe not so happy...

    Yesterday I noticed, that when my well pump starts, it chatters
    through the pipes coming from the pump to a check valve to the tank.
    if you grab the plastic pipes ( new by the way) you can feel the vibration.
    The chattering or vibration is not felt past the pressure tank.

    Now..( more symptoms..)

    the pump starts and chatters, I have a filter between the pump and pressure tank. its a "chunk" filter to get rid of sand and silt.

    While the pump is running, and chattering, if I open the valve, to flush out the "chunk" filter, the chattering stops

    I have checked the pressure switch and its not chattering. I will clean the contacts this weekend. ( I don't think its the pressure switch.)

    The pump is submerged and 220VAC

    any thoughts?

  2. valveman

    valveman Moderator Staff Member

    Mar 15, 2006
    Pump Controls Technician
    Lubbock, Texas
    Filters should be after the pressure tank. When the filter gets clogged, the pressure is shut off from the pressure switch and the pump can't shut off. The pump will then melt down and be destroyed in just a couple of minutes.

    You should also not have any check valve above ground. There should be a check valve on the submersible pump, and that is the only one you need. A second check valve in the system can cause water hammer, and can also create a vacuum in the underground pipe that can draw contamination into your water system.

    Next your pressure switch should be installed right on the pressure tank. The same reason that you do not see the chattering after the pressure tank, will keep the pressure switch from chattering but, the switch has to be very close to the tank.
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