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Giotto P+ group seal dropping out and correct dosing.

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  • Giotto P+ group seal dropping out and correct dosing.

    Hi,

    have noticed in my GPP that the group seal is occasionally dropping out if I dont have the portafilter in.

    Does the rubber on these shrink or could it be another issue besides shrinkage/wear?

    Machine seems to be working properly otherwise...

    As an aside... do owners of this machine feel a small overdose works best for a double basket?

    Im leveling off and tamping to 12 pounds and it seems to be a bit muddy on top of the puck yet there is a mark from the showerscreen.

    Puck seems quite solid and I notice regularly that there is some channeling at the handle of the portafilter (always in the same spot though I have adjusted my filling with grinds to see if that was a cause).

  • #2
    Re: Giotto P+ group seal dropping out and correct dosing.

    I thought it was 16 grams for double?

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    • #3
      Re: Giotto P+ group seal dropping out and correct dosing.

      not sure . I dont weigh my shots.

      Im more interested in what may be up with the group seal to be honest...

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      • #4
        Re: Giotto P+ group seal dropping out and correct dosing.

        A new seal is about $5.00 I would try that first.

        You are putting the seal in with the curved side uppermost arent you.

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        • #5
          Re: Giotto P+ group seal dropping out and correct dosing.

          the seal comes out with the showerscreen. I have not tried to separate them...
          yes it is in the correct way .

          Ill source a spare and go from there

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