This is my first post to TFP, but I've been reading this forum religiously since I bought a house with a pool in April. The pump that came with the house was in pretty bad shape (it was rusting to pieces and very very loud, but still pumped water), so I decided to replace it with a Pentair SuperFlo. I also did some plumbing work to make the equipment pad more elegant and I'm pretty proud of myself. I finally got to the point of firing up the new pump. It sounded fine at first (much quieter than the old beast), the suction seemed good, pressure seemed fine, ran cool, etc. Then after about a hour of pumping it starting getting louder with a rhythmic hum/rattle coming from the back of the motor.
I posted a video on youtube for your listening/viewing pleasure: http://www.youtube.com/watch?v=U2QXk9CG_bQ
This can't be normal for a brand new pump. I have friends with pools and their pumps are almost silent. Did I get a defect? It's still under manufacturer warranty - should I send it back? I feel like I did a pretty good job installing it, but maybe I did something wrong? Has anyone heard this kind of sound before?
Thank you thank you!