Question about Hayward Northstar Dual Speed Max Rate 2 Hp Pump
I have a pump that is way too loud! I've rebuilt the motor, changed out the impeller, slip ring and all o-rings but nothing seems to help. I also put a valve on the outlet side of the pump to create some back pressure since the system is not filtered. It helped a little bit but you cannot restrict the flow too much before the pipes start shaking. Any ideas????
Did you put the slip ring in with the wide end out? This slides foreward when the pump runs and seals the presure side of the impeller from the suction side. If this is not right it can create a lot of cavation noise. I don't know how long this has been a problem but if you just put this in a 3hp pump is a lot and will need a 3" suction on most runs and at least 2.5" on the presure side depending on the run. I hope this helps.
Posted on Oct 05, 2009
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Posted on Jan 02, 2017
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