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Old 04-03-2012, 04:32 PM   #1
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1974 25' Tradewind
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new fan motor source for '74 Armstrong unit

I need a source for the fan motor on the Armstrong air conditioner, mine is shot. What motor will match the Redman unit which was originally used? My electric motor repair company is telling me they found one for $289.
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Old 04-03-2012, 05:04 PM   #2
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Have you tried a search on this subject?

Re-build Armstrong A/C . .
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Old 04-04-2012, 08:57 AM   #3
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Thanks this is what I needed, non of the other threads get specific. again thanks for your time!
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Old 04-07-2012, 02:44 PM   #4
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Here is the motor I found at the local armature shop. It went on the Armstrong unit on my son's '76 SOB.
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Old 04-08-2012, 10:16 AM   #5
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motors

the problem with these motors is the original had a sealed top since it is exposed ti the weather, the motors which granger offers are all open and will have short lives. Thanks
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Old 04-08-2012, 10:44 AM   #6
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I called my air conditioning service company and the RV service center, they both told me RV roof mounted air conditioners are throw away and replace like a window air conditioner. I didn't want to invest $300 in a 35 year old air conditioner when a new one only costs $525.

I'm happy I replaced mine. Now I have a 4 bolt install unit and can be changed out in an hour by anybody in the business. When the replacement unit quits I'll just drop in another one like we change window units when those fail.
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Old 04-09-2012, 09:08 AM   #7
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roof top Ac units old vs new

This is true the new units are throw away, something goes wrong: trash it. However the old units were meant to be serviced and have the compressor set up to be recharged and other elements to be serviced, the condenser coils are much heaver than the new units. If the entire unit had issues I would agree with you, but with the exception of the fan motor this unit should out live me.
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Old 04-09-2012, 12:24 PM   #8
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The Armstrong units are worth saving.

Is the motor really exposed on these? I thought there was a shroud. The open design usually works fine in most air conditioning applications, and they run cooler and weigh less than the enclosed ones. There are no brushes, and the bearings are sealed, so it's not like it's going to melt if it gets wet.
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Old 04-10-2012, 09:44 AM   #9
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motor

you may be correct about the sealed bearings. I was simply trying to find a equal unit, and the market motors did not have the top cover. Yes this motor is exposed since it sits directly under the fan. All the rest of the unit is protected by the shroud.
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