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Sorry, I had the video private. It was wired according to the supply voltage. I have both 230 and 115 available at my pool equipment so I was able to switch the pump to 115 and run it off of that.

Hi all. I have a 230 single speed pump that thrums when running. I have switched it over to 115 and it is much quieter, my phone sound meter had it at 70db on the 230v and 65db on the 115v. Any help would be appreciated. https://youtu.be/jsnkEHIGc2s Thanks for all the suggestions, last...

Thanks for the help. I had a similar problem with my last 2 pumps. I did a quick re-wiring of it from 230 to 115 off of an extension cord and got the exact same result. The annoying rhythmic thrumming was gone and it was a little bit quieter. Go figure. Now I have to wait for a free weekend...