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Coffee residue from 3-way valve
One of the three groups of our Cimbali M39 Dosatron HD suddenly started dispensing some of the ground coffee from the 3 way valve along with the water when the valve is releasing pressure after brewing. The pressure release is also much much more violent than the two other groups, causing it to splash outside the drip tray.
Yesterday I also discovered a slight dripping of greyish/black liquid coming from the top on the outside of the group (same side as the 3 way valve). It’s covered in insulation, so I can’t directly see where it comes from (but perhaps group-split or valve). Group has an internal heating element, so top/bottom of the group is joined by a 109mm o-ring, and the 3 way has it’s usual 2 pcs 9.25mm o-rings.
Could these 3 “problems” stem from the same fault?
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