Question about Nuova Simonelli Oscar Coffee Maker, Espresso Machine

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Hi, THe boiler element has been replaced by service as well as the p'stat with a commercial one. Machine is 1.5yrs old. Everything works fine except grouphead temperatures are extremely low.(165Fmax) after 2.5hrs of being on. I double checked with a new digital thermometer and a manual one. the temps were identical. The steam is incredible and the pump works great. Please advise. cheers

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  • nudgeb Apr 15, 2008

    I have exactly the same situation. Oscar is only 7 months old and used very little , but grouphead water temperature tops around 160f. Steam is phenomenal however. This i think is the cause of the ulta fast extraction....and almost immediate blonding. 2 oz in around 10 seconds



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Descale boiler and group then make sure steam gauge reads 1.2 bar. If not adjust p.stat.

Posted on Nov 18, 2009


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