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 Posted: Sun Sep 22nd, 2013 08:05 pm
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Tom Moorman
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Hi - new member with old fan questions!
My wife found a Westinghouse Mobilaire 16MA2  at an estate sale.  I started looking it over today.  This will be a first for me - so please allow me to ask some questions that probably are really simple for most of you!
There are at least three issues needing attention:
(1) The switch is broken and stuck in low - so the fan runs but I need a new switch.  Can I use one from Home Depot that looks like it should work or do I need to locate original parts?
2) The fan blades need a push to begin rotation, but then turn nicely.  I oiled it a bit, and will hit it with compressed air to try to blow out the dust.  Any other solutions for that issue?
3) It is running backwards....that one has me stumped - all looks like original parts to me so why would it run backwards.  The power cord is not running through the rubber grommet in the ring housing - so wondering is someone worked on it somewhere along the way?  Could running backwards be related to the broken switch?  I don't think so but I don't have any experience with the inner workings of electric motors.
Can send additional pics if that will help.Thanks for any help.Tom

Attached Image (viewed 493 times):

Westfan1.JPG

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 Posted: Sun Sep 22nd, 2013 08:22 pm
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Tony Clayton
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oops

Last edited on Sun Sep 22nd, 2013 08:57 pm by Tony Clayton

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 Posted: Sun Sep 22nd, 2013 08:44 pm
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Greg Miller
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Your fan should have a run capacitor and it sounds like it's bad. This would be why it runs slow and doesn't start unless you spin it first, even though it spins freely. It also sounds like someone may have messed with the wiring when the switch failed, which could explain why it tries to run backwards. Until you replace the capacitor, it will not run right no matter how it's wired. I wouldn't let it run for any length of time until you can verify this or you will permanently damage the stator and kill your fan. Once you cook it, it's done.

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 Posted: Sun Sep 22nd, 2013 11:50 pm
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Tom Moorman
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Thanks. Anyone know a source for a capacitor for this fan? Looking around at the posts here but seems pretty scarce?

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 Posted: Mon Sep 23rd, 2013 04:42 am
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Greg Miller
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You can find a similar one from Grainger or McMaster-Carr, most likely.

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 Posted: Tue Sep 24th, 2013 12:55 am
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Tom Moorman
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I have taken the capacitor out of the fan.  Printed on it is "3.3 MFD 330 VAC" (hard to read in photo but clear in hand) which sounds correct for this fan based on other threads I have reviewed but this is all new to me.  It was larger than expected - 3.5 inches tall and 2 inches wide but presumably it was the original capacitor from this fan.  Pic attached.

As I am not an electrician and don't want to burn up the motor I would appreciate any help to guide me to the proper replacement capacitor.  Would this one possibly work?

http://www.alliedelec.com/search/productdetail.aspx?SKU=70186105

Thanks in advance for any help anyone can provide.

Tom

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run_cap_3.3MFD_330VAC.JPG

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 Posted: Tue Sep 24th, 2013 02:18 am
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Marshall Smith
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You might take a look on Amazon for 2-wire ceiling fan capacitors. Those work just fine. Get the 450V rating. The price is good. 

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 Posted: Wed Sep 25th, 2013 02:11 am
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Harmon Larimore
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Here is some additional info.

Hopefully our fans have the same colored wires.  Here is how mine is wired: 

I just used a temp cord and alligator jumpers to test the motor WITHOUT BLADE, switch or resistor.

Actually, what resistor do we need for this thing?

A 3uF 450V cap should work well for you:  
http://www.ebay.com/sch/i.html?_odkw=run+capacitor&_sop=15&_osacat=4662&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.Xrun+capacitor+3uF&_nkw=run+capacitor+3uF&_sacat=4662

or

http://www.amazon.com/s/ref=sr_nr_n_2?rh=n%3A172282%2Ck%3A3uF+450V+run+capacitor&keywords=3uF+450V+run+capacitor&ie=UTF8&qid=1380071514&rnid=2941120011

Last edited on Wed Sep 25th, 2013 02:14 am by Harmon Larimore

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 Posted: Wed Sep 25th, 2013 02:17 pm
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Tom Moorman
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Thanks to all of you. I ordered parts - so maybe by this weekend I will have it up and running! Thanks again for the help! I'll likely need that wiring diagram as the existing wiring has been altered and it probably could stand replacement.

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