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Friday, 9 December 2011

Model 110E - Stella - Desider Stern - Vienna - Part 11

If you didn't want to rely on the signal whistle... you could still visually check the pressure with the manometer.

Not all the machines had a manometer, it could be bought separately.

The sufficient pressure to use the coffee machine was 1 to 1,5 ATÜ.

ATÜ stands for "Atmosphere Überdruck".
1 ATÜ is equivalent to 0,981 bar.

If you still have the original manometer on your machines, the right pressure was signaled by a red line, like on these machines i have seen so far:

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