Hello, I have a Brewtus II and I recently replaced both a leaky OPV and then the Ulka vibe pump. Since then, I am unable to get the brew consistent pressure as I used to when I had the machine completely dialed in for beautiful shots.
First, the pressure was varying up and down during brew cycle, and after turning the OPV adjustment up and down all the way several times, the pressure now is mostly steady during a shot. However, when the wand is pulled down to complete the shot, the water in the brew head is not completely expelled, and the machine brew pressure gauge holds steady at the brew pressure of around 9 bars. For the pressure to drop down to 1-2 bars, I have to quickly lift the wand up and down again, and let little water drain out of the group head drain. This behavior is also evident when back flushing - earlier the back flush ended with a strong "whooosh!" and expelled the water with considerable force from the drain. Now, the outflow of the water from the drain is not strong, but ends more with a slow stream. Again, the pressure is not strong enough when the brew wand is pulled down again. The spent grounds in the portafilter loose and watery top surface - not like a dry puck that I used to have earlier. Any thoughts on how I can solve this pressure problem? I have made sure the water lines are not kinked, I have also replaced the rubber gasket in the group head sieve. Any thoughts/help much appreciated! My shots are nowhere near the beautiful ones I used to have!! Ken. -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/brewtus. For more options, visit https://groups.google.com/d/optout.
