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I have a well water pump that will not get top pressure. Does it need to be bleed from the pump to the well?

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How pressure will it build does the pump stey running or does the pressure switch kick out ? if u hear a click and pump stops u need to adjust pressure switch so it will go higher or get a new switch switches are rated like 20-50 20-60 what is ur switch rated for ? if the switch doesn't kick out and pump just keeps running and running u either have a bad pump or ur sucking air

Posted on Sep 28, 2009

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Need more information to get specific, but some likely causes are:
  1. Pump or heating coils are air bound, should be an air separator with a bleed valve on top by the pump and bleed valves on the coils, let the air escape slowly. It doesn't take much air to bind up a system and the air doesn't have to be traped in the pump itself, these pumps are low head (dont put out much pressure) but very reliable.
  2. System is low on fluid (water), Internal system pressures are dependent on design considerations but typically will be anywhere from 3 to 15 PSI. There needs to be enough pressure to keep the water from boiling.
  3. All valves to heat zones closed, most zone valves have a manual open position, try opening one or two. A valve problem is more likely than pump failure.
  4. Power to the pump? Correct voltage and polarity?
Thats about all I'v had to deal with on my system,
Good Luck.

Aug 15, 2009 | Grundfos Plumbing

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