How to lubricate washing machine motor carbon brushes

[davetranter]

'Money Shot'

I have no idea where the term 'money shot' originates, but this is probably the nearest thing for this post..

Sorry about the shadowing..... Photographed in natural (and rare!!) sunlight

All best

Dave T

 

[combo52]

Old Motor

It looks like what we called a repulsion-induction A/C motor, my 1937 Frigidaire room air-condition has a similar motor that drives the compressor with two 1/2" wide drive belts.

 

[tolivac]

The excellent pictures-sunlight is the BEST light-yes,beleive we have a repulsion-induction motor.It starts as a brush type motor for high start torque-then as the brushes are lifted-then its an induction motor.Remember years ago Delta used a repulsion induction motor as an option in their "Unisaw" table saw.Was 2Hp.Typically table saws aren't considered a high start torque device.Now the "Unisaw" dosen't have the option of a Repulsion induction motor.Usually were used in high start torque applications-compressors as a good example-both for refrigeration and air compressors.The theater curtain drive is another example-to get the heavy gear drive and curtain moving.Yes,for "Live" theaters the fire curtains are still used.They are no longer made from asbestos.Synthetic materials makes them lighter in weight.And if the curtain is deployed-in some theaters the curtain is dampened with water as it comes down.At least for USA.
The amp ratings on the motor sound strange for a 1/8 HP motor-probably they meant 1.69A and 3.38A for the voltages used.

 

[davetranter]

Fire curtains

At all the theatres I've worked in, the curtain 'drencher' is optional under separate control. It lives up to it's name, and would be rather messy if used after every performance.

Will have to read up on 'repulsion motors'.... I have heard the term before, somewhere in the distant past... They are not, however, mentioned in 'Hughes Electrical Technology', a standard teaching and reference work this side of the 'pond'....

Still sorry to have hijacked the thread....

Dave T

 

[tolivac]

Curtain drenchers would only be used in an emergency-an actual fire.For routine use--would be rather messy.Might feel good on a hot summer day!Repulsion motors weren't as common as others.Nowadays I don't see them being made anymore.

 

[bertrum]

lubricating carbon brushes!

Quite honestly if you are asking questions about how to lubricate carbon brushes its time to call in professional help.

 

[tolivac]

You don't "lubricate" motor brushes-they by nature of the material they are made from-self lubricating.The carbon,graphite and trace metallic elements in the brush material make them lubricate themselves.The formulas for brush materils will vary by maker,and the size or HP of the motor.And are the brushes being used on slip rings(AC devices) instead of communtators.