Water pump won't shut off until housing tapped

[Patandlinda]

Originally Posted by bdornbush

I only know what Artic says in their instructions, which is that the pump can be mounted either horizontally or vertically but if mounted vertically, it should be mounted with the pump head down. I plan to mount mine horizontally so that I can reach the pump head without dismounting the pump.

Just trying to figure out why we have gone through so many pumps . 3 so far . The first though found the filter with flat top was cut through from stainless screen cutting it . Replaced with dome filter . Thankyou . Pat