AO Smith replacement motor suddenly noisy

About 1 year ago, my pool service company replaced the original Sta-Rite motor on my circulation pump with an AO Smith Centurion B853 (1HP) (after 3+ years of service). I was very happy with it until now because it ran much cooler and quieter than the original. But now, it has suddenly become noticeably noisier - a more pronounced whine that can be heard in the house. I believe it is also running hotter.

I have been running the pump 12 hours a day since the motor was replaced, where I had been running it 7x24 previously. Any idea what may be happening?

Rick

Please look under the motor/ pump interface for a drip ( this would indicate that the shaft seal assembly has gone bad on you)

I'll await your response:)

Good call, Waste. There is water dripping from the motor/pump interface... not a lot, but I can see it when I get on my knees and look underneath.

So I guess I should contact my pool service company. How serious is this? Does this indicate impending failure?

Rick

Since the motor was replaced only a year ago the pump should come apart easily. That is no corrosion seizing bolts and so forth. Replacing the seal assembly should therefore be pretty easy. Dig up the owners manual, online if you don't have it, and instructions should be in it.
Good Luck.
Al