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Originally Posted by BRiT
Any news/progress on this at all?
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Not really. It is a big issue with Iwaki to modify these down to 12vdc as Nikhsub1 says. This is what they responded: "In addition to the change in the windings, the pump's circuit board would need to be reworked to accommodate a 12VDC design. The change in voltage and circuit board amounts to a complete redesign of the pump; therefore, we are unable to offer the RD-30 or RD-20 in this configuration."
Next week when I have more time to concentrate on this instead of my job I'll research a few more possibilities. One is finding a cheaper/smaller 12vdc to 18vdc (for the RD-30) or 24vdc (for the RD-20) voltage converter to be able to run off of a standard PSU. This would also allow it to be moved where ever there is room in a box.
The other is to take a sample pump to a guy I know in Phx, next time I'm there, that may be able to modify (redesign) these and see if cost will permit a large run.