We just got a used kitamura Mycenter 1, and the spindle oiler has air in the lines.
I'm not familiar with it. Is this an oil reservoir with thin clear hoses going to the spindle bearings? They should have air, that's what delivers the oil to the bearings.
The compressor runs continuously.
I don't know what you mean by compressor.
Have you called Kitamura? They would be the best to answer those specific questions, since they built the machine.