Vintage Compressor Motor RPm?

[turbosl2]

I am wondering if anyone has seen a motor like this. I need to know if it's 1725 or 3450 rpm. No tags on it anywhere

 

[turbosl2]

It's on a Kellog A-320-UA compressor driving a Quincy 310

 

[jakemac]

Open up the boxes on the motor. There may be wiring diagrams or data tags inside.

 

[turbosl2]

I did and there was noting but the capacitor tags in there and the two caps

 

[redmondjp]

Do you have any electric motor (rewind) shops near you? They could tell you if you brought in the motor to them. My best guess is 1725rpm.

 

[bob15]

Plug it in, start it and use a photo tach and you will have the RPMs, with no guessing.

Here is one for sale at HD (amazon has them as low as $15.00): http://www.homedepot.com/p/General-Tools-Laser-Photo-Tachometer-LT2234C/202074536

 

[turbosl2]

Ok I will try that. If I am 1725 then I am turning to slow which is why it takes 20mins to pump up my 80 gallon tank! I want to be at 900

 

[Zeke]

Plug it in, start it and use a photo tach and you will have the RPMs, with no guessing.

Here is one for sale at HD (amazon has them as low as $15.00): http://www.homedepot.com/p/General-Tools-Laser-Photo-Tachometer-LT2234C/202074536

No need for a tach. You will know a 3450 motor instantly.