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AFCA Forums > Antique Fan Collectors Association > Pre-1950 (Antique) > Best way to clean stater windings wrapped with old brittle tape and wax paper ?

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Best way to clean stater windings wrapped with old brittle tape and wax paper ?  Rate Topic 
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 Posted: Wed Mar 13th, 2019 04:15 pm
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Joel Schmid
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Howdy folks,

On my Century S3-15 skeleton fan the windings on the stater have old brittle cloth and waxy looking paper separating each of the bundled loops of wire around the stater lamination form. What is the best way to clean the stater without damaging the waxy paper ? I am noticing that just touching it with a brush is breaking little flakes of the waxy paper off. Its probably not going to hurt the motor electrically if it does, but I would like to preserve as much of the original construction as possible. I could just spray the whole thing with winding insulation lacquer but I dont want to see a bunch of "preserved dirty dust" in my pristine restoration !
:hammer:

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 Posted: Mon Mar 18th, 2019 04:15 pm
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Joel Schmid
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Figured it out.
Turns out gently brushing a diluted solution of purple power on them made them less brittle and allowed cleaning with almost no loss of paper or cloth wrapping. Stator is now clean, dry, and re-sealed with black tinted lacquer.
Moving on to rest of restoration ...

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 Posted: Mon Mar 18th, 2019 07:44 pm
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David Allen
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Joel Schmid wrote: Figured it out.

Turns out gently brushing a diluted solution of purple power on them made them less brittle and allowed cleaning with almost no loss of paper or cloth wrapping. Stator is now clean, dry, and re-sealed with black tinted lacquer.

Moving on to rest of restoration ...


Joel; Purple Power a caustic water based cleaner. That might be harmful to the windings. Hopefully you thoroughly rinsed it with copious amounts of clean water afterwards. I would hate to think about that alkaline cleaner remaining in the winding.

Even if you bake out the winding, the caustic will crystalize in the stator and then draw moisture from the air and keep corroding things over time. 

Sincerely,
David

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 Posted: Mon Mar 18th, 2019 08:21 pm
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Marc Miller
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David,
Was it you who told us about using "Wearever" brake cleaner on stators for cleaning safely? Low VOC, non- chlorinated cleaner. I use it frequently with great results

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 Posted: Mon Mar 18th, 2019 08:40 pm
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David Allen
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Marc Miller wrote: David,

Was it you who told us about using "Wearever" brake cleaner on stators for cleaning safely? Low VOC, non- chlorinated cleaner. I use it frequently with great results

Hi Marc. Yes that was me. It works well and seems to be quite safe. 

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 Posted: Tue Mar 19th, 2019 11:02 am
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Joel Schmid
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Hey David - yes I did thoroughly rinse the stator out, plus the solution I used was about 1 part PP and 10 parts water.

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