I've picked up a second hand Gast 'ring compressor' - the kind used to blow air for pneumatic systems at banks and the big box stores -- and the occasional pet store with plenty of fish tanks.

It's wired for 240VAC one-phase... it's a nominal 2.5 hp motor... start cap -- run cap -- and thermal protection via solid state inside the pecker-head.

But the capacitors are all mixed up/ missing.

I don't normally work this side of street... and was hoping that the ECN crew would/ could guess a first approxmation for suitable values.

The internal wiring megs out fine.

Near as I can tell, the motor was either wired Monday morning by a hung over trooper or it was pumped at 120 VAC by a prior owner -- or some such.

I don't have a motor test bench -- no decade boxes. I'd rather not throw every capacitor in the world at this little project.



Tesla