What you describe is likely. But the OP still needs to have all of these details confirmed.

A 220V, 1PH pump motor is more common & I don't dispute that machines are often configured to allow a choice of 1PH or 3PH. Usually this means that everything except the heating element is 1PH and it's just a matter of configuring the element wiring. But I have seen commercial Italian machines that have true 3PH motors, usually the larger, 3 or 4 group ones.

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another_jim wrote:The US three phase standard is 440V

Uhh, what? I thought it was 208v or 480v line-to-line, which would be 120v or 277v line-to-neutral. 440v L-L would be 255v L-N, numbers that I don't hear a lot of around these parts. (380V L-L = 220V L-N, a little more common.)

I do agree on the VFD idea if it turns out 3 phase is needed. Ideally the electrician involved has worked with industrial tools and won't be surprised by one.

Your electrician will probably appreciate having the installation instructions available, which would describe the various ways it could be wired up. These are probably in the manual, which may be a part that can be ordered from a Fiorenzato dealer.

Motor says 230v 50-60hz
sirai pressurestat 240vac 20 amp.

this is looking brighter for me que no?

Espin wrote:Uhh, what? I thought it was 208v or 480v line-to-line, which would be 120v or 277v line-to-neutral. 440v L-L would be 255v L-N, numbers that I don't hear a lot

480V is the better description, but 440V is not unheard of.

For trivia or history buffs, it is more accurate/modern/standardized to say 480/277Y per ANSI C84.1. But there is a legacy in North America of having nominally incompatible distribution systems. Early utilities often distributed different voltage steps so that customers could not change utilities without incurring capital expenses. This was later standardized, but even today there are a few older distribution systems that use 440Δ, 460Δ or 480/240, rather than 480/277Y.

And more to the point, NA 3-phase power is sometimes described as 440V, although 480V is a more accurate description. A similar situation exists with respect to household voltages. It is more accurate to say 120/240 (3 wire) or 208Y/120 (4 wire), but you will often hear manufacturers and even authorities refer to the distribution voltage as 110/115/120V nominal and 220/230/240V nominal. This is part legacy and part overlapping specification.

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Dickwayne wrote:Motor says 230v 50-60hz
sirai pressurestat 240vac 20 amp.
this is looking brighter for me

It's encouraging & you appear to have some luck on your side. It means that your pump motor and pressurestat will run properly on an existing 240V circuit in your house. This would be an electric range or dryer type branch circuit. The heating element being resistive will almost certainly work as well, provided that someone confirms that the terminals are appropriately wired for 240V.

However there may or may not still be an issue with the voltage and line frequency for the control electronics and solenoids. Probably the solenoids and control electronics will also be 240V. So the real issue is whether anything essential in the electronics is synchronized to a 50Hz line frequency. But it is looking like you got off lightly & the machine will be relatively easy to install.

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wookie wrote:480V is the better description, but 440V is not unheard of.

I'll admit that I'm not as up on electrical history as I should be. 440v just jumped out as a real oddball for me. (Like "Gee, when I'm out back in the plant, I can't recall seeing any units being produced for 440v or 255v... but 480v, 415v, 400v, 380v, 277v, 240v, 230v, 220v, 208v, 120v, 100v... all come up pretty regularly.")

Still, if it is an historical system, it may be difficult to order new 440v service... I'd expect a customer-side step-down would be required.


As for frequency issues, if the previous owner was running it successfully on 60hz, I'd expect that Dickwayne will be able to as well, once it's wired up. (I didn't hear any magic phrases like "I just got it off the boat from Italy" or "finally cleared customs" that would suggest it was previously a 50hz installation.)

wookie wrote:It's encouraging & you appear to have some luck on your side. It means that your pump motor and pressurestat will run properly on an existing 240V circuit in your house. This would be an electric range or dryer type branch circuit. The heating element being resistive will almost certainly work as well, provided that someone confirms that the terminals are appropriately wired for 240V.

However there may or may not still be an issue with the voltage and line frequency for the control electronics and solenoids. Probably the solenoids and control electronics will also be 240V. So the real issue is whether anything essential in the electronics is synchronized to a 50Hz line frequency. But it is looking like you got off lightly & the machine will be relatively easy to install.

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thanks! you all have been awesome help!!! the control pads are connected to 230v boxes, the power knob also indicates 230v. I have learned more about circuitry and wiring in the past two days than i have in my entire life! i love every bit of it!

and here's a pic of the setup so far!