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Thread: Replacing a Nuova Simonelli Oscar II pump

  1. #1
    Senior Member matth3wh's Avatar
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    Exclamation Replacing a Nuova Simonelli Oscar II pump

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Started up Oscar II yesterday morning and could instantly tell the pompa was not well. Noisy as anything. Well, extra noisy with rattling sounds instead of the normal noisy Ulka pump vibes.
    Fortunately I have a spare Ulka EX5 ready for this day.

    Pressure is definitely less based on more watery liquid produced but that may also work with the new research. Sadly probably only 1-2 bar.

    Anyway, will open up the case and see what shakes loose. May the Coffee Snobs gods smile on this machine.

  2. #2
    Senior Member matth3wh's Avatar
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    These Ulka pump pressure/flow rate graphs may be useful.




    vs. something posted on HB


  3. #3
    Senior Member matth3wh's Avatar
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    Replacing a Nuova Simonelli Oscar II pump


  4. #4
    Senior Member matth3wh's Avatar
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    Replacing a Nuova Simonelli Oscar II pump

    I think the pump was trying to rotate itself in situ

    Handy access panel on bottom of machine and easy access via side panels meant it wasn’t too much drama to change over to new pump.

    Old



    New

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  5. #5
    Senior Member Jackster's Avatar
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    How's the coffee now?
    matth3wh likes this.

  6. #6
    Senior Member matth3wh's Avatar
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    Quote Originally Posted by Jackster View Post
    How's the coffee now?
    Coffee is much better. New pump sounds are much better thanks Jackster
    Dimal likes this.



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