Water pump woes


Old 06-05-17, 09:31 PM
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Join Date: Apr 2014
Location: Canada
Posts: 19
Water pump woes

Have a Grundfos pressure pump I bought used,hooked it up to a water tote to water my garden,builds up to pressure ok but when it goes to cut out it cuts right back in again,there are no leaks in the system and if I unplug the pump electricity the system holds pressure good.So the pump is continuously cycling.I have a smallish pressure tank in the system,but it still should come up to pressure and shut off till the pressure drops even with a small pressure tank.Any ideas?
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Old 06-05-17, 09:49 PM
PJmax's Avatar
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Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 44,398
Either the tank needs a little air or more likely a problem with the pressure switch in the pump.

A model number of the pump would be helpful.

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