Quote Originally Posted by m_c View Post
Looks a like a pressure switch, or possibly sensor.
What's stamped on the side of it?
And is there a small adjusting screw between the terminals? It may of been sealed over with some sealer/paint (if it has a screw, then it's most likely a switch)
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Probably some form of monitoring that tells the controller that lube is actually being pumped. Where does the wiring go to?
Do you know if it's a one shot type pump (fires single shot every xx minutes), or a continual pressure pump (pumps/maintains pressure constantly)?
The wiring goes nowhere. It ends with a wire with 2 ends and labelled 'lube pump'. Thing is - pump runs with a relay activated. I dont know what this does. I might try and open it to see.

The manual talks about only running the lube pump once the slides have moved 16meters. Since this is now a Mach 3 system, there will be no such logic.