Single phase, two cap motor

[seanf]

Not quite fridge, but someone might know.

ABAC B2800B air compressor, with Single phase Tipo M80-2M 2.2kw motor.

The electric motor has a winding to earth, so its being replaced.

But when having a look at the wiring, it looks as though it has two run capacitors? I thought Id seen something similar before, but online searches dont seem to bring up much on how its connected to the windings.

Four wires come from the motor,
One black, connected to Live.
One white, to a 35uf capacitor which is looped to another 40uf capacitor.
First red, connected to the other side of the 40uf cap.
Second red, connected to Neutral.




A link to another forum (not to promote it) where someone else is talking about the same model of air comp, where they have posted a number of pictures of the wiring and disassembled motor.
https://www.mig-welding.co.uk/forum/...ressor.132146/

It looks as though there is no centrifugal switch, or anything else to disconnect one of the caps.

Just wondering how the circuit works?

Cheers