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DeepHelmet 06-21-2007 12:20 AM

AC Fan Noise
I replaced the motor in my American Standard furnace/air handler last winter. It's worked perfectly until today. There is an occillating noise coming from the motor/fan area. It comes and goes. I pulled the fan and motor and checked all of the mount screws, they were ok. There is a very small amount of lateral movement between the shaft and the motor body, but I seem to remember this was present when I installed it. Any ideas?

Sammy 06-21-2007 08:21 PM

Intermittent vibration would be unusual... I would check the fan blade for debris, dirt buildup, or a missing balancing weight... Maybe take it out and spin balance it on a nail in garage.. I had one with so much dust on it one time it would rattle picures on the wall. Cleaned it off and it ran fine.

DeepHelmet 06-21-2007 09:35 PM

That makes sense. I'll check it out, thanks.

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