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Westinghouse 10LA4 Speed Control  Rate Topic 
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 Posted: Wed Jul 3rd, 2019 01:22 pm
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Steve Shelton
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I restored a Westinghouse 10LA4, a 10" diameter single speed desk fan, a few years ago but rarely use it because it's so loud. I'd like to slow it down to make it quieter. I read the excellent article "Slowing Fans Down" By John McComas (http://www.fancollectors.org/info/speed.htm) but am so electronic illiterate I'm unable to find a fan dimmer appropriate for this fan or figure out how to make it work. Can anyone point me to a source for a fan dimmer and how to use it with this fan (pictures would be great!).

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 Posted: Wed Jul 3rd, 2019 01:54 pm
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John McComas
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Have you looked at this link?
http://www.afcaforum.com/view_topic.php?id=49649&forum_id=5&highlight=10LA4+resistor

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 Posted: Wed Jul 3rd, 2019 02:20 pm
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Steve Shelton
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My Westinghouse has the switch on the motor housing, not the base. Was the 10LA4 with the switch in the base variable speed?

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 Posted: Wed Jul 3rd, 2019 03:41 pm
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David Kilnapp
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I have a couple of Variac transformers in my house (one of them is in my bedroom for use with my daily runner a Vortalex) and one is in my living room connected to my 1911 R & M Gearback. Sometimes I connect it to my 16 inch pancake. These are inexpensive (at least the ones from China) that you can get for short money and you can be sure they won't harm the motors. Personally, I wouldn't control a fan speed with a dimmer switch. Much better to use a Variac transformer.  Search the words variac transformer and quite a few will come up for sale. Some prefer to buy only American made and that's a personal preference. 

Last edited on Wed Jul 3rd, 2019 03:44 pm by David Kilnapp

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 Posted: Fri Jul 5th, 2019 10:59 am
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Steve Shelton
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Thanks for putting me in the right direction. One more question, though. All the variacs I've looked at have an output greater than 110 volt. Would it damage the fan to turn the switch all the way up?

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 Posted: Thu Jul 11th, 2019 05:34 pm
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Richard Daugird
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I have turned some of mine up to 140 for a while with no appearent damage, but I mostly use then to slow down, not speed up. Get a Kill-A-Watt( or several), and do some testing with an eye on amperage.

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