Electric splitter

[eggsarascal]

It gives the motor it's direction by changing the timing of the voltage in the start winding relative to the run winding. No start circuit and it's 50/50 which direction the motor runs.

 

ok, it's something I've never seen mind, (I'm no electrician).

 

Assuming that the new Cap that Mull fitted is good why would the motor still run backwards?

 

He checked the windings with his meter.

[cornish wood burner]

ok, it's something I've never seen mind, (I'm no electrician).

 

Assuming that the new Cap that Mull fitted is good why would the motor still run backwards?

 

He checked the windings with his meter.

 

Centrifugal switch open circuit then the start circuit won't function.

[eggsarascal]

Centrifugal switch open circuit then the start circuit won't function.

 

Wouldn't the motor always run backwards if the Centrifugal switch was open circuit?

[cornish wood burner]

Wouldn't the motor always run backwards if the Centrifugal switch was open circuit?

 

No it would just cancel out the start circuit then the run winding would drive the motor either way

[eggsarascal]

No it would just cancel out the start circuit then the run winding would drive the motor either way

 

Does the cancelling out of the start circuit change the polarity?

 

I feel I'm digging myself a deep hole here.

[cornish wood burner]

Does the cancelling out of the start circuit change the polarity?

 

I feel I'm digging myself a deep hole here.

 

No. Think of two separate windings each supplied by the sinsudoidal mains voltage. The capacitor changes the timing between these two waves and this affects the magnetic field which drives the rotor in one direction or the other.

If you change the polarity of either start or field winding then a serviceable motor will run in the opposite direction. Change both it will stay running in the same direction.

Was this a test? If it was I did the same one about 45 years ago.

I suspect I can guess your capacitor test method and it always seems impressive.

I'm sure you're right not to put that on a public forum though.

[Mull]

Keep going boys! Are we nearing the point where you tell me how I repair it?[emoji3]

TBH I was feeling abit sinsudoidal when it broke.

 

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Edited January 29, 2017 by Mull

[better dayz]

Keep going boys! Are we nearing the point where you tell me how I repair it?[emoji3]

TBH I was feeling abit sinsudoidal when it broke.

 

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Send it to Cornwall

[Mull]

Send it to Cornwall

 

 

Could probably buy 2 new ones for the transport costs[emoji3]

 

 

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[better dayz]

Must be an electrical engineer near you somewhere or even an agricultural engineer they generally don't like to be beat and have a wide knowledge