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| Coolant pump alternative? |
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| 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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