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file Proteo Grande voltage issue

  • Tony
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14 years 1 month ago #2541 by Tony
Proteo Grande voltage issue was created by Tony
I have had a Proteo Grande (from Starbucks in the USA) for about 10 years.

It still produces decent coffee and can froth milk ok, but when I used my friends' machines recently I noticed they always get crema, whereas I almost never do.

I have tried different grinds, roasts, tamping pressure etc... and nothing has made a difference.

I suspect that the slightly lower voltage here in Japan 100v/60hz (I think it is rated at 110 or 120v) is the culprit, but I would like someone who knows to confirm it.

Any suggestions on a workaround would be great!


Thanks.
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14 years 4 weeks ago #2544 by colin
Replied by colin on topic Re:Proteo Grande voltage issue
I am not an electrical engineer but it seems reasonable that if you drop the line voltage that the unit might not heat up to working temperature -- but with additional thinking (it is morning here after all...), the Barista has a thermostat and even at the slightly lower voltage of 100VAC, the unit element should still be able to bring the water up to the right temperature.

So. Domo origato Mister Roboto -
Maybe your friends just have a better espresso maker!
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