How to change 230V 50HZ to 380V,50HZ ?

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Steps:
1.Open the control box, find out these two short wires(white and blue),
take out of them.
2.Connect the firing line(3pcs),zero line(1pc),ground line(1pc).
3.Put this black line(see follow picture) from J25 to J28.

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Signs of a High-Quality Hot Tub jacuzzi

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Sometimes it's difficult to differentiate between the best hot tubs and something that looks like a quality spa , but is really a bust. As a good rule of thumb, if it seems like a too-good-to-be-true deal, it probably is. Below are a few points on how to spot a hot tub spa that may be a little subpar. Inflatable spas are by far the lowest of quality, because, unlike the best spas, the outside shells are not built to endure a lot of bumps and abuse and will eventually puncture. While inflatable hot tubs are cheap options, and they are easy to take down and move, they don't come with the jet streams and other features necessary to meet any therapeutic needs. One thing to look for is where the components, especially the pumps, are made. Stay away from products that have been imported from outside of the U.S. where manufacturing of these parts is not as closely regulated. Often these cheaper parts run hotter and use more electricity, both of which will end up costing y...
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How does a hot tub or sauna affect HBP?

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