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Thread: Low pressure on Expobar minore

  1. #1
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    Low pressure on Expobar minore

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi all

    I just acquired the minore IV and would love so ke advice on why the group pressure reading is low
    Stays between 2-4 bars, and when running with blind in, it only goes to about 3.

    Ive tried to adjust the OPV but doesnt change it.
    Could something be loose?

    Thanks in advanced

  2. #2
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    Re: Low pressure on Expobar minore

    Also, just to add, the steam pressure looks ok, reads 1 bar.

    And the flow from the group seems quite weak.

    Love your wisdom

  3. #3
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    Re: Low pressure on Expobar minore

    Joyo;

    Take out the filter from the water tank, some times this filter does not allow the water to come through.

    otherwise look like is your pump is gone, take to your local teck, they will check all this for you.

    Regards
    Renzo
    Di Bartoli Home Barista Centre

  4. #4
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    Re: Low pressure on Expobar minore

    Wow that serious. A blown pump.

    Ill check the filter when I get home.

    Just wondering, How does a pump fail?

  5. #5
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    Re: Low pressure on Expobar minore

    Over time mechanical parts do fail, how old is your unit?

    Though having said that I believe an OVP is meant to address the longevity of the pump (correct me if im wrong).

  6. #6
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    Re: Low pressure on Expobar minore

    Do you know the history of the machine? How much use? correctly filtered water used? backflushed regularly? Does it need descaling? etc, etc. Is the group head gauge on the machine reading correctly? Can you check with an external pressure gauge on the group head.

  7. #7
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    Re: Low pressure on Expobar minore

    Hi all
    Thanks for your help

    Its only a couple of months old, still under warranty.

    Its just beyond me what went wrong.

    Ill try to test it with a portafilter gauge.


  8. #8
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    Re: Low pressure on Expobar minore

    When you purchased the machine did you get the person to make you a coffee or demonstrate that its working?

  9. #9
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    Re: Low pressure on Expobar minore

    It was working fine
    So its beyond me.

  10. #10
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    Re: Low pressure on Expobar minore

    Was this the one purchased off Mike Squires I had a laugh?

    Anyway, if youre that concerned you might better off bringing it to Chris at Talk Coffee for a look? Saves you the stress and gives you a piece of mind at least?

  11. #11
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    Re: Low pressure on Expobar minore

    If its still under warranty, best not mess with it and just contact the reseller or distributor.

  12. #12
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    Re: Low pressure on Expobar minore

    Yes thats the plan now
    Thanks

  13. #13
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    Re: Low pressure on Expobar minore

    thanks all for your help.
    my noob mistake,
    preinfusion takes time, so the pressure doesnt rise until after a while.



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