Following my blog of Wednesday the 11th October about the build up of the water pressure in machines that aren't constantly in use, I had a response from "Fracino", the leading UK manufacturer of espresso coffee machines. As you will read from the following, they acknowledge that they did experience an issue in the past, however they have now modified their machines. Older machines can have a simple modification made to them to eliminate the problem. The power of the Blog!
Reply from Adrian Maxwell Director of Fracino
"This is not really a problem but just a question of settings. This must be an old machine ie more than 2 years as we now as standard fit the temperature control on all machines as people are now much more aware of " Italian style espresso" which is a good thing. In the past people always wanted very hot milky coffee. The second thing that probably happened is that the Barista over heated the milk because this would make the cappuccino far hotter than the group temperature. The other solution is to fit the temperature control parts which is very simple. This consists of replacing the 2 heat exchanger dip tubes for longer ones and fitting 2 PTFE restrictors into the the top heat exchanger fittings. This will then act as a brake slowing the water flow down and thus cools the group. The smaller the orifice the lower the temp. With this mod the group will run at 89-92 degrees c and makes perfect espresso with any coffee.
This would also explain why you have noticed this on some machines but not others. We are getting in Dip tubes and restrictors for any one who requires them."
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