Question about Nuova Simonelli Mac 2000 I Group Espresso & Coffee Maker

2 Answers

Boiler pressure low

I just purchased a used Nuova Simonelli Mac 200v single group espresso machine for my cafe. I love it, but I feel like the boiler pressure is low, preventing me from pulling a really good shot. It won't go up past 4 bars and I feel like it should really be at around 7-9 bars. Does anyone know how to adjust this. My steam pressure is ideal, right at 1.2 bars. There are no leaks in the machine either.

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  • cookie973 Dec 20, 2008

    The steaming elements work great. I have no problem with steam. I cleaned the group and lines and still no pressure gain. It looks like the pump motor switch is trying to kick on the pump, but I get no action. The manometer's bottom gauge pulls back to around 1 bar for about 2-3 seconds then jumps back to 4 bars, but no motor is heard and pressure does not increase,

  • cookie973 Dec 20, 2008

    I'm sorry, but you must be mistaking me for someone who knows what that means? I am new to the technical side of all this, so I need you to "hold my hand" through all this and try to explain it to me like I'm a six year old. Thanks and sorry.

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You said you clean the machine with vinergar or descaller use descaller vinegar not strong enought descaller melt the calcium vinergar remove it in chunks and can still be block after the cleaning and dont forget maybe the person who had that before you never did maintenanse on it descal it a few time let me noww pierre and how do you descalled it thanks

Posted on Dec 20, 2008

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Do a full cleaning cycle, if there is scale on the element water wont reach temperature and you get less pressure.

Posted on Dec 20, 2008

  • Ginko
    Ginko Dec 20, 2008

    If steam does not come out of the nozzle , and pressure is poor, it is usually a broblem with clogged lines or heating element.
    If the element is covered in scale it won't heath sufficiently.

    Check also that the nozzle sprayer is not clooged.

    If the lines are free, then either the heating element, or the pressure switch are defective.


  • Ginko
    Ginko Dec 20, 2008

    If the pump does not kick in at all, the pump mest be tested by energizing it.

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