How to repair when motor starting winding failed

[Jed057]

Dear guru,
We have a fan motor but the problem is motor starting winding failed So we need to start by manual only.

Please any advise what we can we do for this ?

Only change capacitor or do new winding ?

Thanks for your share knowledge

Young engineer

 

[ScottyUK]

You need two things: a scrap metal skip for the old motor and ebay for a new one. It is rare that a repair to an FHP motor is economically justifiable - I'm assuming FHP because it's a fan and single phase.


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If we learn from our mistakes I'm getting a great education!

 

[edison123]

If you like to get your hands dirty, you could have fun by trying to rewind the motor by yourself. Just make sure to note the connections of the coils, no. of turns in each coil and the wire gauge. Get some good impregnating varnish and you're good to go.

Muthu

http://www.edison.co.in

 

[waross]

We have a fan motor but the problem is motor starting winding failed So we need to start by manual only.

Starting winding failure is not the most common failure mode. The most common failure mode is the capacitor on capacitor start motors or the centrifugal switch on non capacitor single phase motors. Both these conditions are repairable.
A failed starting winding is usually the result of a centrifugal switch that has failed to open.
Hire an expert.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[jraef]

Cheap fan motor = $100 US, probably less.

Start switch = $15?
Capacitor = $10?

Potential savings, $90 best case.

Labor time to select, purchase, receive, inspect, disassemble, inspect, repair, reassemble and inspect either of those parts = 4 hours best case, probably more...

Your time is now worth $15 /hour or less.

I make considerably more than that...





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[electricpete]

I tried telling my wife that I shouldn't have to wash the dishes because that's a $15 an hour job

once.

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[edison123]

pete - it just shows you are weak in math.

Muthu

http://www.edison.co.in

 

[electricpete]

lol. Or else I'm not mechanically inclined - it would take me at least 2 hours longer.

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[gpedens]

Jeb, the answer is depends. You did not give much info. Is it company or personal fan? What size, horsepower, volts, etc is the fan motor? How often is it run and how critical is it? As stated above for single phase motors it is most likely the start capacitor or contact in the centrifugal switch. I have seen the bearing grease or oil get hard or dry out and the fan not start unless you manually spin the blade. If the winding has burned you most likely need to just get a new one.

Thank You,Radar. Duke Power

 

[elgonzausa]

Don't loose time and brain. Get a new one and you solve the problem

 

[gpedens]

Hey, folks don't forget sometimes its's about education not economics.

Thank You,Radar. Duke Power