Gallery, Projects and General > How do I??
Coolant pump alternative?
super7:
Has anyone had any luck with alternatives to your regular vertical type coolant pumps? My machine came with a 440v pump, but I can't use it.
Cheers :thumbup:
John Rudd:
I use a seperate pump system for my mill and lathe....
Why cant you use the 3 ph pump?
Adding a capacitor to the pump and a bit of wiring ought to get it running....
super7:
Is this the ghost phase trick? I'd be interested to know how it's done, although I'm sure I have read it's a bit of a cladge up.
The lathe came to me as a 400v 3ph machine. I can deal with the spindle motor by wiring it in delta and using a single phase to 3 phase 230 inverter, but the coolant motor had left me stumped.
This is the pump motor plate, its 3 terminal, so assume I'm stuck with 440v?
awemawson:
Find a small 240 to 415 volt transformer and then generate the third phase with a capacitor. You really only need an auto transformer, so anything that has a 240 and a 415 volt primary tapping would work. Or even a 240 volt isolating transformer with primary and secondary wired in additive series.
John Rudd:
Yes, the cap trick is a bit of a fudge but does work....plenty of info on the net....easier than getting hold of a transformer....
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