Thread: Solid State relay kills induction motor fans
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M Philbrook M Philbrook is offline
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Default Solid State relay kills induction motor fans
In article ,
says...

David Lesher wrote:

Deane Williams writes:


The motor still spins easily. There is no DC continuity from the power p=
lug but I beleive this is normal for induction motors? Perhaps the overheat=
sensor has opened permenently.

You got it. As they age the bearing dry and they pull more current.
Eventually they open the Microtemp protecter within....



** "The motor still spins easily" contradicts that idea.

Seen a few cheap Chinese fans with tight/stuck bearings - takes a fair bit of solvent to get them spinning again.

The OP has no so far bothered to open a fan a check the motor wiring for continuity.


... Phil

Yes he did, There is no continuity.. Which means it's been operating
hot!

Jamie

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