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If you are considering a 3-group machine, and cost is no issue, I would recommend two 2-group machines, instead.
First of all, in a 3-group machine, the middle group is virtually unusable when the other two groups are being used. There just isn't enough space for a barista to work in there, if other baristi are using the outer groups.
With a single 3-group machine, you are still susceptible to too many single point failures. As some one already pointed out recently, on another topic on this board, if your espresso machine is down, you are virtually out of business. With two 2-group machines, there are no machine related single point failures to cripple you.
You can arrange your machines on the counter with all the grinders in between the two espresso machines.
It is not uncommon in heat exchange machine to over size the boiler to minimize the temperature fluctuations in brew water, thus the use of 3-group machines when a 2-group machine can handle the traffic. No such consideration is necessary for a double boiler machine.
I will be happy to put you in touch with one of our customers who started planning for a 3-group machine and then switched to two 2-group machines. You can see what their experience has been. If you are interested, send me an e-mail.
Good Luck.
.............We use a 3 group and it is the best way for us. I would NOT want to have 2 - 2 groups. When we are busy and have two baristas working together, the one does cups, flavoring and shots the other steams milk and hands off to customers. So the "two baristas making shots" is never an issue, because to do that you would need to have 2 sets of grinders (which we tried for w short while when we redid our bar area years ago and didn't work).
At the end of the day I would choose a 3 group LM FB/80. Oh yeah, that's what I did choose!
That's a great question. The PID on the Aurelia has really brought the temperature stability question to a new level (that is in comparison with the LM with PID). The old two boiler vs one boiler argument has less distance between extremes of the argument. We have both and I would say my staff prefers the LM over the Nuova. They are both great machines. The one thing about the Aurelia is the steam lever is preferred over the knob on the LM. But the newly designed knob is so much better than the old style I think it is much less of a disparity.
And Joseph, you know I love you, but I disagree on the 2 - 2 groups vs the 3 group. We use a 3 group and it is the best way for us. I would NOT want to have 2 - 2 groups. When we are busy and have two baristas working together, the one does cups, flavoring and shots the other steams milk and hands off to customers. So the "two baristas making shots" is never an issue, because to do that you would need to have 2 sets of grinders (which we tried for w short while when we redid our bar area years ago and didn't work).
At the end of the day I would choose a 3 group LM FB/80. Oh yeah, that's what I did choose!
Jack Groot said:.............We use a 3 group and it is the best way for us. I would NOT want to have 2 - 2 groups. When we are busy and have two baristas working together, the one does cups, flavoring and shots the other steams milk and hands off to customers. So the "two baristas making shots" is never an issue, because to do that you would need to have 2 sets of grinders (which we tried for w short while when we redid our bar area years ago and didn't work).
At the end of the day I would choose a 3 group LM FB/80. Oh yeah, that's what I did choose!
Jack: Are you using all three groups efficiently? I don't see you having three baristas working on this machine at one time. My point was that one uses only two, out of the three groups, effectively and in that case, all you are gaining is a larger boiler.
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