Tumble dryer motor wiring

Do you have the wiring diagram from the dryer? Usually it's printed inside the back cover or folded up in an envelope behind the control panel. It can be figured out without that but the diagram makes it easier.

"Swiss Tony" wrote in news:AVdbi.27822$ snipped-for-privacy@newsfe14.ams:

I think it is a bi-directional motor. You hook neutral to the white terminal, and line to either the red or blue terminal, depending on the direction you wish it to rotate in.

If you take the lid off the capacitor, two leads should go in the motor.

The thing the white wire goes in and comes out brown is the thermal overload. It opens of the motor gets too hot. It will close on its own when it cools down.

Unfortunatly the dryer is long gone :-(

Just to confirm Gary Taits post. Neutral to the white wire Live to either the red or blue depending on the direction i want it to go?

I will be running this motor for 4+ hours at a time, is it likely that the motor will overheat? Was thinking about adding a fan to the unused drive shaft to direct air through the motor.

The only dryer I've ever seen with a reversible motor was a Creda unit that was imported from Europe. It had a PSC motor which had one wire to neutral, then one of the other wires would go straight to hot, and the other through a capacitor to hot. Reversing the motor was accomplished by a relay that swapped which hot the capacitor was on.

So can i still wire it up Neutral to the white wire Live to either the red or blue depending on the direction i want it to go? or will this cook it?

Probably not, but it won't run either. You need one wire to go to hot, and the other wire to go to hot through a capacitor to shift the phase and create the rotating field.

So its a scrapheap job then :-( Oh well, glad it didnt cost me anything :-)

Why? The capacitor should be easy to find, it might even be the one attached to the motor. Hook it up and try it out.

Not necessarily. Some motors are designed so that the two winding differ sufficienty in inductance and resistance to shift the phase without a run capacitor.

Correct, just be patient if you are reluctant to experiment. Someone will figure it out.

What are the ratings of the cap?

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All is good :-) Neutral to white and live to red, earth to earth, ashes to ashes, dust to dust, well maybe not the last 2, but the motor spins and I am happy that I dont have to go paying for a new motor.

Thanks for all your help.

"Swiss Tony" wrote in news:Qchbi.75707$ snipped-for-privacy@newsfe29.ams:

Yes, do that.