electric fan motor (1 Viewer)

[erics]

simple answer for someone that knows this stuff, I'm sure...

this motor is from a fan that stopped working... it isn't apparent to me where the thermo-fuse is, even looking inside the case of the motor at the armature, etc. where everything looks ok to my untrained eye.

I suspect it was part of or was the capicitor itself (also pictured) and is the problem? Can anyone confirm or advise?

I'd like to fix it if easy enough... how do I test/confirm, and do I need that specific part or can I replace with a "std" cap of the same size? Or nothing - what is the cap doing in this instance?

thanks

 

[fledglingme]

from what you've given us, it hard to figure out the problem with your fan motor. a motor that stoped working could be anything..even a bad cap! btw a cap is used to "start" the motor turning, and from the schmatic you posted, also used in the run curcuit. and yes another cap with the same information on it would work, but it would make sense to check first if there's power...both before AND after the on/off switch( refer to the schmatic) if there is, you might ask yourself a question.."is this fan worth my time and money to fix"

 

[rockcrawler]

erics, to test if its a bad motor start cap, power the motor up and spin it in its working direction. If it starts its the cap, they can be replaced and sourced without a problem. The thermal fuse would not be located in the cap but somewhere on or in the motor. Some are resettable (automatically), some aren't. For maximum fire protection the fuse would be located right inside the windings where it's hottest, in which case it's not replaceable. If it's somewhere on the outside you should be able to spot it without a problem, if you can't, it will be inside the core.
IMO regulations are a bit overboard these days when it comes to safety. Same with most new transformers, most have an internal overcurrent fuse (bit of wire), once that goes you can toss it.

edit: just saw its made in china.... hmmm yeah, toss it.

 

[erics]

I'll try the spin test, but I expect it had the thermal fuse internal and that it's toast... thanks

 

[rockcrawler]

I'll try the spin test, but I expect it had the thermal fuse internal and that it's toast... thanks

No problem. I installed a range hood for a friend about a month ago. She sent me a text last night telling me that the fan stopped working. I suspect the same thing as what happened with yours but am clinging to vain hope that its the crappy switch it came with as that will be an easier job than getting a new hood under warranty and having to re-install it all... what a PITA

 

[Koffer]

No problem. I installed a range hood for a friend about a month ago. She sent me a text last night telling me that the fan stopped working. I suspect the same thing as what happened with yours but am clinging to vain hope that its the crappy switch it came with as that will be an easier job than getting a new hood under warranty and having to re-install it all... what a PITA

On stuff like this if the part is removable I just swap out the bad stuff and put the new unit back together and return it under warranty.
The last time was a bathroom fan with light. The motor s*** the bed about a month after installing, drywalling and painting so I just replaced the fan motor part of the unit .
much easier.