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Old 01-09-2014, 09:41 PM   #1
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Noises from blower


Hello all,
Recently I replaced my blower motor in my York unit with this: http://www.ebay.com/itm/270933875038...84.m1497.l2649. It works better than the last, but there have been a few developments recently that cause some concern for me.

I took two videos to show what I'm concerned about. The first one describes what I call the "paper" noise:http://s927.photobucket.com/user/Jim...c530c.mp4.html.

Here is the issue I'm worried about - the slop in the motor. Here is a short video with that:
http://s927.photobucket.com/user/Jim...4376f.mp4.html

What could be causing either one of these? Is this something to be worried about?

The "paper" noise is (of course) coming from the side I cant really reach, to in order to take a better look, I have to take the cage out. Not a fun job, but one I can do.

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Old 01-09-2014, 11:07 PM   #2
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Noises from blower


I Looked at your videos. I would be concerned to. Wheel seems too loose, warped, wobbly and out of balance. Stay tuned, and let the hvac guys take a look at what you got there. Please give them time to respond they're very busy. Thanks.


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Old 01-09-2014, 11:33 PM   #3
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Noises from blower


First, its spinning in the wrong direction. Next, the blower wheel needs to be slide further on the shaft toward the motor. The play in the bearing that is allowing you to move the wheel/shaft is normal for many motors.
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Old 01-09-2014, 11:49 PM   #4
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Noises from blower


Quote:
Originally Posted by beenthere View Post
First, its spinning in the wrong direction. Next, the blower wheel needs to be slide further on the shaft toward the motor. The play in the bearing that is allowing you to move the wheel/shaft is normal for many motors.
Thanks for the quick reply. If the fan is spinning the wrong way, that means that somehow I switched the polarity of the motor. I simply followed the colors of the motor I took out and plugged the new one in the same way, one wire at a time.

It's good to know that the play is normal. The old motor had a inch of play and made some God awful noises before I took it out.
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Old 01-10-2014, 12:07 AM   #5
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Noises from blower


It should spin in the direction that the arrows point. I may not be seeing it right in the video. Old eyes.
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Old 01-11-2014, 12:14 AM   #6
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Noises from blower


Old eyes here as well but
I
thought the cage was turning in the correct direction but..
the cage isn't properly centered within the housing and
if the motor is mounted rock hard...then
that wobble is probably a locking spindle on the cage that is coming off or is warped out of line.
Check, if with the motor shaft staying in a stable position, the squirrel cage can wobble around off center, in directions perpendicular to the motor shaft.
If so you should be able to see the part of the cage locking onto the motor shaft, stay with the shaft, while the rest of the fan cage can be moved a bit independently.

If so it's best to just change the squirrel cage.

Last edited by how; 01-11-2014 at 12:33 AM.
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Old 01-11-2014, 09:13 AM   #7
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Noises from blower


wheel is not centered ...1 st problem..2nd either wheel has broken welds or bearing on motor is going out.....try centering blower wheel 1 st.. ben sr
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Old 02-03-2014, 10:03 PM   #8
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Noises from blower


Update: the noise went away for a while, and so did my attention from the issue...until today. We just got 8" of snow (of course), and I awoke to such a racket. I thought it was the blower motor, and was all pissed off that the motor I just bought (2 1/2 months old) could be bad.

Well, ben's plumbing was right. I didn't know what he meant about broken welds until I saw this youtube video:

The video is not great quality, but within 15 seconds I had my answer. Sure enough, I went downstairs and the whole hub has completely separated from every blade. I guess the noise stopped because the hub got caught in a rough spot in the blades until now. Way cheaper fix than a new motor.

Thanks to all who helped the new guy!

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