Tumble dryer motor wiring

[Swiss Tony]

Hi
I salvaged a motor from a mates tumble dryer (made by servis I think)
Not 100% sure on how to wire it up.
Mounted to the motor is a socket which has 3 wires leading to the motor, 1
red, 1 white and 1 blue labeled,
m1 =red wire
m2 =blue wire
m3 =white wire
http://www.wigilive.co.uk/motorpic.jpg
They disappear into the motor and 2 wires come back out which are red and
blue, which lead to a capacitor.
http://www.wigilive.co.uk/1.jpg
The white wire changes colour when it reaches the inside of the motor(i
guess due to heat)
http://www.wigilive.co.uk/2.jpg
http://www.wigilive.co.uk/3.jpg

I dont know a huge amount about motors as you can tell.
I am not sure if this motor just spins one way and has 2 different speed or
if it is capable of running both directions.
If its a 2 speed one, I am after the slowest speed setup.

Thanks

 

[James Sweet]

Hi
I salvaged a motor from a mates tumble dryer (made by servis I think)
Not 100% sure on how to wire it up.
Mounted to the motor is a socket which has 3 wires leading to the motor, 1
red, 1 white and 1 blue labeled,
m1 =red wire
m2 =blue wire
m3 =white wire
http://www.wigilive.co.uk/motorpic.jpg
They disappear into the motor and 2 wires come back out which are red and
blue, which lead to a capacitor.
http://www.wigilive.co.uk/1.jpg
The white wire changes colour when it reaches the inside of the motor(i
guess due to heat)
http://www.wigilive.co.uk/2.jpg
http://www.wigilive.co.uk/3.jpg

I dont know a huge amount about motors as you can tell.
I am not sure if this motor just spins one way and has 2 different speed
or if it is capable of running both directions.
If its a 2 speed one, I am after the slowest speed setup.

Thanks

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.

 

[Gary Tait]

Hi
I salvaged a motor from a mates tumble dryer (made by servis I think)
Not 100% sure on how to wire it up.
Mounted to the motor is a socket which has 3 wires leading to the
motor, 1 red, 1 white and 1 blue labeled,
m1 =red wire
m2 =blue wire
m3 =white wire
http://www.wigilive.co.uk/motorpic.jpg
They disappear into the motor and 2 wires come back out which are red
and blue, which lead to a capacitor.
http://www.wigilive.co.uk/1.jpg
The white wire changes colour when it reaches the inside of the
motor(i guess due to heat)
http://www.wigilive.co.uk/2.jpg
http://www.wigilive.co.uk/3.jpg

I dont know a huge amount about motors as you can tell.
I am not sure if this motor just spins one way and has 2 different
speed or if it is capable of running both directions.
If its a 2 speed one, I am after the slowest speed setup.

Thanks

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.

 

[Swiss Tony]

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.

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.

 

[James Sweet]

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.

 

[Swiss Tony]

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?

 

[James Sweet]

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.

 

[Swiss Tony]

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

 

[James Sweet]

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.

 

[Sam Goldwasser]

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.

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.

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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[Swiss Tony]

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.

 

[Gary Tait]

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.

Yes, do that.