Vibration pump how does it work

Your average vibe pump clocks in at sixty pushes per second. Unlike a vibratory pump, a rotary pump is mechanical. It is also a complex mechanism. A motor spins a disc that is offset inside a large, round chamber. The spinning disc is segmented into sections by vanes. As the disc spins, the vanes press against the wall of the outer chamber, diminishing the size of the section, creating pressure.

Water enters in during the large phase and is pushed out as the section shrinks. Water flow to the GH seems fine and unrestricted…. Put the Portafilter gauge back on but now cannot get more than 8 bar pressure. The opv is operating fine, I can reduce below 8 bar but can go no higher. My thought now is perhaps the pump is failing it is about 3 years old now?

Close the OPV completely, look for no flow and then run the pump against a pressure measuring portafilter, or the gauge and see what pressure you get. If no water is coming out of the OPV tube, cant get more than 8 bar and you don't have a de aerator , and your boiler pressure isn't rising a lot. If water is still gushing out of the OPV, then remove it and try with just the pump and see what pressure you get…. It could also be more scale logged in the pump.

Last night the pressure increased to 9bar but no more so i have coffee but as we all know unregulated the pump should be pushing out closer to 15bar. I don't believe this is the opv as i have both screwed it right down effectively bypassing it and cleaned it so there is no blockages.

I can happily reduce the pressure with it. The water flow is normal, to my mind a blockage anywhere in the system would reduce flow, not pressure. There are no leaks anywhere. Sponsored by Flair Espresso. How many times it's turned on and off, or how long it's used? Running it too long generally over 60 seconds will heat it up, so it needs at least as long to cool down before starting up again.

Habitually leaving it in for more than a few seconds at full pressure during backflush is unnecessary and hard on it, as is waiting over a minute to see a drop or two from a choking grind. Ulkas are tough - the same pumps we use power many things, e. I have a Strega that uses a vibe pump and have it plumbed in.