Unidose pump losing prime

Support forum for troubleshooting chlorination pumps and their applications.

Unidose pump losing prime

Postby lwparchive » Mon Nov 05, 2012 4:40 pm

I currently have a UniDose pump for chlorination of my well water. It has
been working well up until this point. It is approximately 5 years old. It
seems to keep losing its prime. u041-281 is the model that I have. Can
you advise of any suggestions to fix this issue?

Dennis S.
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Re: Unidose pump losing prime

Postby dcohan » Tue Apr 02, 2013 1:56 pm

CHANGING THE FOUR UNIVALVES IN THE SYSTEM SHOULD SOLVE THE PROBLEM . ONE LOCATED AT THE INJECTION POINT , ONE AT TOP OF PUMP , ONE AT BOTTOM OF PUMP AND ONE IN THE FOOT VALVE
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Re: Unidose pump losing prime

Postby alice » Wed Nov 13, 2013 1:46 am

this item arrived yesterday and I installed it with no problems. my effort to syphon the cholrine solution up, (with my mouth and suction) failed. air came through with little resistance.
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Re: Unidose pump losing prime

Postby dcohan » Tue Nov 19, 2013 8:57 am

If you are pulling air from the suction side the connection at the footvalve strainer assm. is not correct. Make sure all the Orings are in the proper position
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