Need help identifying this loud pump motor noise

monfresh

Active member
May 30, 2018
38
Vienna, VA
Pool Size
28500
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-60 Plus
Hello. I recently replaced the start capacitor in my AO Smith SQ1102. Before I replaced it, it was making a humming noise for a few seconds before pulling the water in, but once the water was in, I'm pretty sure the humming went away. After replacing the capacitor, it seemed to be back to normal. But then a day later, and since then, while it starts right away, it's now much louder than it used to be and it sustains this loud noise as long as it's turned on.

I recorded a video to help you identify this noise:

Is this a bearings issue?
 

monfresh

Active member
May 30, 2018
38
Vienna, VA
Pool Size
28500
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-60 Plus
I should add that I'm replacing this pump, but the new one won't get here until next week. With the noise you hear, how long do you think the current one will last?
 

zea3

Mod Squad
TFP Expert
LifeTime Supporter
Jul 10, 2009
14,045
Houston, Texas
Its hard to say how long the motor will last making that noise. It could go like this for months or it could seize up the next time it runs. If it does go out before the new pump arrives you can add liquid chlorine manually and brush the pool to mix it in until the new pump is installed.
 

monfresh

Active member
May 30, 2018
38
Vienna, VA
Pool Size
28500
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-60 Plus
Thanks @Mike1162 ! I'm not sure what to look for. Here are some pictures. Do you see anything out of place? Is that plastic capacitor cover in the wrong spot?
 

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Mike1162

Silver Supporter
Jun 13, 2015
1,104
N Tonawanda, NY
Everything looks OK to me except the yellow wire above the capacitor has a break in the insulation. I'd put some electrical tape on that & make sure its not getting pinched when the cover goes back on. Does the motor shaft spin freely?
 

ferretbone

In The Industry
May 24, 2016
161
tx
You'll find out when you replace it. It could be impeller hitting the diffuser, or motor bearings. I doubt its the cap. To me it sounds like a saw which can lead me to checking the impeller first the replacing the motor.
 

JamesW

TFP Expert
Mar 2, 2011
28,256
The yellow and red wires need to be tucked in under the capacitor between the stands.

When the centrifugal switch weights swing out during full rotation, the weights can catch on the wires and rip them loose.

1629511426792.png
 
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