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Will check out the blockage possibility. Two of the tanks have a good head - could survive without the pump. The main tank we use has the base about level with the pump so it should still feed the...

Thanks for that outback. The need is that we have three different tanks feeding at different times and the head of each varies greatly and this seems to effect when the pump kicks in. Particularly a...

I have a Grundfos CH2-30 pressure pump and no instruction manual and the Grundfos website is of no help. Got someone in to adjust the pressure switch when I wasn't at home so I was unable to watch...