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Do electric motors slow down with age?

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Forum topic by SMP posted 01-19-2022 02:04 PM 465 views 0 times favorited 6 replies Add to Favorites Watch
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SMP

5308 posts in 1363 days


01-19-2022 02:04 PM

This post is actually about my washing machine, but I know there are all types of people here that now about electrical and motors etc. I couldn’t find out by searching appliance sites. Anyways, i have a 22 year old washing machine. It works almost perfectly. I have done maintenance on it, replaced belts etc. but it has the original motor. For about 6 months or so, it hasn’t been getting the clothes dry and after checking everything else and replacing the water pump, the only thing I can think of is that the motor is not spinning as fast as it used to to centrifugally get the water out. I don’t see any way to replace brushes or anything. Does anyone know if electric motors slow with age? It seems just like any other tool motor.


6 replies so far

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hotbyte

1156 posts in 4433 days


#1 posted 01-19-2022 02:12 PM

I may be remembering some of this incorrectly but many years ago we had a similar problem. There was a centrifugal switch or something similar that kick the machine into a high spin speed. So, ours was just spinning at a low speed which left the clothes wet. I replaced the switch and it worked fine.

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bigblockyeti

8526 posts in 3178 days


#2 posted 01-19-2022 03:46 PM

They can slow down very slightly if something is mechanically slowing the motor such as worn bearings or a damaged shaft. Other than that, they don’t slow just with age. If it’s not reaching full speed, I would suspect the centrifugal switch isn’t working correctly. If run on the start windings along for long enough, a thermal overload is likely to be tripped, if there isn’t one, the motor could be destroyed quickly.

-- “I never in my life thought I would have to say this, but the proper role of government is not to fund the distribution of crack pipes,” Lauren Boebert

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SMP

5308 posts in 1363 days


#3 posted 01-19-2022 04:32 PM

Ok thanks. I watched a video and a guy was able to somehow clean the centrifugal switch, looks like it might be part of the motor. He also replaced a capacitor mounted on the outside.

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NedalNooh

31 posts in 179 days


#4 posted 01-19-2022 05:25 PM

As far as I know, a motor doesn’t slow down with age as the speed of a motor depends on 2 fixed factors: construction and frequency. I agree with


They can slow down very slightly if something is mechanically slowing the motor such as worn bearings or a damaged shaft.

-- If you lose, don't lose the lesson.

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SMP

5308 posts in 1363 days


#5 posted 01-19-2022 06:04 PM



As far as I know, a motor doesn t slow down with age as the speed of a motor depends on 2 fixed factors: construction and frequency. I agree with

They can slow down very slightly if something is mechanically slowing the motor such as worn bearings or a damaged shaft.

- NedalNooh

As I understand , this is a 3 speed motor. I don’t have a way to test the speeds. But it sounds like there is something to this centrifugal switch. If its not shifting to speed 2 or 3 that would explain why the clothes don’t wring out.

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MrUnix

8997 posts in 3657 days


#6 posted 01-19-2022 08:02 PM

Have you verified the spin speed? Push a clothes pin or something in the door switch so you can watch it during the spin cycle. We have an old Kenmore washer about the same vintage, and more than half the time, the spin doesn’t engage – only draining the water and leaving the clothes way wetter than they should be at the end of a cycle. When that happens, you can ‘bump’ the machine into engaging by stopping/starting it during the spin cycle. At that point, it will spin normally to completion.

On mine, the problem isn’t with the motor, it’s most likely the clutch.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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