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Originally Posted by lolito_fr
Potentially quite a nice overclock: 20% faster shaft speed = (theoretically) 20% higher max flow, and 44% more static head (max head proportional to square of rotor speed) 
However, as with cpu's, increased frequency may require increased voltage…and more power.
As it won’t be getting more volts than it's 50Hz rating (it's now effectively "undervolted"), it probably won't run 20% faster, or maybe only at low loads. At higher loads, it may slow down more than it should (bad).
Roughly translated - It may be ok in a restrictive loop (low flow/high head = low load).
And it may tend to stall if running unrestricted (high flow=high load)…not good
Just my 2c
No knowledge of Iwaki pumps in particular, just assuming typical asynchronous motor behaviour (YMMV  ) |
iwakis will happily run on either 50hz or 60hz (in fact japan has both in differing areas of the country!)
if you look on page 6(of 8) here:
http://www.iwakipumps.jp/products_e/...f/md_w2003.pdf
you can see the performance on both...
max. head for a 15R rises from 2.4M to 3.4M...
just needs a suitable transformer - should be easy to find as the power draw is very low (compared to other domestic equipment ..)