Need Help!- Don't know where to put this. Lube pump wiring

[RP Designs]

I keep coming back here looking for info because I have very poor documentation with my particular mill. It is a comet cnc knee mill with an old fanuc 10m control that I am in the process of retrofitting. I am looking at the lube pump and trying to determine the wiring. I have 4 wires coming from the pump (red, black, green and white). I am assuming it is an AC pump but I have no way to verify. Continuity across the red/black wires makes me assume the red/black are pos and negative. I assume the green is ground (shield), but what is the white? Anyone have any ideas or a way to check. All of the info on the pump seems to have been worn away.

[Al_The_Man]

Most likely it is a three phase motor, and green is ground.
Check the continuity between the R,W,B to confirm it.
The other types of pump are a simple 1 ph 120v and the other two would be a level switch, But I tend to think it is the 3 ph version.
Al.

[RP Designs]

Al, there is continuity between the red and black, but there isn't continuity between any of the other wires.

[Al_The_Man]

Then you may have to do some reverse engineering by checking the connections and wiring right at the pump.
Also, if the wiring is still intact, to trace where they originate from.
Al.

[RP Designs]

Well I was able to find a label. It looks like it is a Chiba SMD-6. The only thing I could find is that it is a chinese pump. I can't find any info on the smd-6, but it looks very similar to the sma series here:
http://www.chiba.com.tw/e/pro.htm#02
The only info it gives is 110V but doesn't specify phase. It does not appear to have a float.
Here is what the wiring looks like at the motor:

[Al_The_Man]

OK, it looks like a typical 120v 'clock' motor, most likely the R&B are the motor and the G & W are the float switch.
They do also show 220v models, but it may show it on the motor.
The details on the site are mainly in Chinglish but they do show models with a float switch.
Following the wires through should solve the dilemma somewhat.
Al.