Re: Volumetric Bezzera BZ07 DE Update
From your description of how the OPV is letting water back into the tank, it seems that the problem with the machine is something simple
There was a blockage in the line after the OPV... something blocked the flow of the water and caused the pressure to build above the pressure release setting.
I dont know what that blockage was, but I DO have a guess at what could have caused it.
In short it sounds to me like like youve tightened the nut on the portafilter a bit too far, loosen it up a bit and it might actually work better
From your description of how the OPV is letting water back into the tank, it seems that the problem with the machine is something simple
There was a blockage in the line after the OPV... something blocked the flow of the water and caused the pressure to build above the pressure release setting.
I dont know what that blockage was, but I DO have a guess at what could have caused it.
In short it sounds to me like like youve tightened the nut on the portafilter a bit too far, loosen it up a bit and it might actually work better


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