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Westinghouse PowerAire smoking motor  Rate Topic 
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 Posted: Fri Apr 26th, 2019 07:06 pm
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Christopher Thayer
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Hello all, I posted a while back about my Westinghouse PowerAire that was smoking but the post and account got deleted (there is another Chris Thayer in the forums and using my first initial instead wasn't allowed).
Anyhow, since the deleted post I've replaced the stator but it's still smoking.

I tested resistance with my multimeter, on high it's reading 24.5 and on low it's 50.3

Are those readings correct? Any other thoughts on what to look for?

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 Posted: Fri Apr 26th, 2019 07:20 pm
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Lane Shirey
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If the motor smoked, it most likely heated high enough to damage the motor winding insulation and therefore the stator will need to be replaced. 
If you need a stator, post it on the BST column and post a pic of the fan and it’s blade diameter.  

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 Posted: Fri Apr 26th, 2019 07:24 pm
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Christopher Thayer
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This was already a new (used) replacement stator from a parts fan I got on eBay, I feel like if I was to just replace it again the same thing will happen.
What else could I test to see what is causing it to fry?

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 Posted: Fri Apr 26th, 2019 07:56 pm
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Lane Shirey
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Depends on what fan you have. Bad cap, tight bearing, lack of lubrication, improper assembly.  Could be many things..

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 Posted: Fri Apr 26th, 2019 10:24 pm
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Christopher Thayer
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Attached Image (viewed 204 times):

CGcjQMN.jpg

Last edited on Sat Apr 27th, 2019 06:37 pm by Christopher Thayer

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 Posted: Sat Apr 27th, 2019 10:37 am
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Lane Shirey
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Wow, that’s a giant photo. Maybe try replacing it with a smaller resolution.

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 Posted: Sat Apr 27th, 2019 06:19 pm
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Ryan Blazei
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Your stator looks damaged in the photo. There is bare copper showing. Be careful with these.

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 Posted: Sat Apr 27th, 2019 06:38 pm
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Christopher Thayer
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Ryan Blazei wrote: Your stator looks damaged in the photo. There is bare copper showing. Be careful with these.Yes that is the original bad stator. I'll have to get a picture of the new one, but it looks ok visually as far as I can tell.

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 Posted: Wed May 1st, 2019 01:49 am
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Christopher Thayer
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This may be a silly/dangerous idea, but is there harm in powering the stator without the rotor?

I'm thinking I might be able to see if there's any contact being made with the metal housing or at least figure out exactly where the damage is if the rotor isn't in the way.

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 Posted: Wed May 1st, 2019 09:58 am
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Lane Shirey
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Momentarily would be fine but anything more will overheat it.  I’d use an ohmmeter to check that.  If you’re going to work on fan motors you really need to buy a multi meter and learn how to use it.  Applying power to a questionable circuit is not the way to go.  

If the motor smoked, the stator is most likely bad, and should not be reused.  Does the motor spin freely if you spin it by hand?  

It’s also quite possible someone sold you a bad stator.  

Last edited on Wed May 1st, 2019 10:03 am by Lane Shirey

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 Posted: Wed May 1st, 2019 09:54 pm
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Christopher Thayer
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I do have a multimeter and know how to use it, I posted the resistance measurements in the first post. I don't know if what I'm reading is way off from what the values should be though.

The rotor does spin freely.

Last edited on Wed May 1st, 2019 09:55 pm by Christopher Thayer

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 Posted: Wed May 1st, 2019 11:00 pm
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Lane Shirey
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I’m saying you need to test the stator OUT of the circuit.  Does that fan have a cap? 

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 Posted: Thu May 2nd, 2019 04:30 pm
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Christopher Thayer
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No, there isn't a capacitor.

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