Vesuvius Pressure Profiling Machine - General Discussion

Hi all, not solved, the machine remains in Naples.

Paolo asked us to remove the gliceur and try to reproduce the problem. I did it and there is no difference in my machine. Service boiler on and hot, there is always a “barrier” during the first seconds at about 1,8-1,9 bars on the screen, that is what makes the pump increasing the speed and overshooting. Service boiler on but under 120º, no problem at all. I have tried it many times and have sent the videos asked to the factory. Removing the gliceur would find out if the problem is related with scale or debris.

Hi everybody, exactly as @tocateclas has written the machine is in Naples we are in contact with @Paolo_Cortese sending videos with test without glicer but the machine follow failing!

Dear @DavecUK the valve named as “one way” is the only part shared between both boilers if the pressure in steam boiler is high when we find the fail, Is it possible the problem happen if the valve don’t work right ? What do you think?

In Naples only could see a jump when @Paolo_Cortese removed the glicer but in this case the circuit had air, in the next test the machine didn’t jump the pressure.

Thanks very much!!!

Regards and happy new year for everybody, i hope to find the solution this year!!!

kautivo Dear @DavecUK the valve named as “one way” is the only part shared between both boilers if the pressure in steam boiler is high when we find the fail, Is it possible the problem happen if the valve don’t work right ? What do you think?

It might be that there is am intermittent and momentary leak to the steam boiler (autofill solenoid) when the pump starts, so it speeds up thinking it needs more power to get the pressure. Then the leak stops as the pressure rises and this causes the pressure to peak momentarily (like a water hammer effect) before the pumps PID can respond…once peaked, the peak will take a while to come down as the brew circuit has a lot of resistance due to the puck now being wet.

Is @kautivo’s machine not in Naples? Did Kautivo not fly to Naples to visit ACS factory to investigate the problem with the machine at the factory? The last couple of messages are suggesting not?

Ah ok, so your machine is working ok now? Air trapped in the circuit caused the issue?

DavecUK That makes sense. The pump struggles to pass the 2 bars during the preinfussion probably because the autofill valve is not 100% closed, this would explain why this happens only when the service boiler is under pressure. But I already changed this electrovalve so don’t know what to do next…

DavecUK

Thanks again,

This one (photo not from my machine):

I changed the whole brass piece, everything but the pressure sensor. Problem was there before changing all these spares.

No, steam is always normal, not super strong. The steam boiler seems to work all right.

It happens when the steam boiler is hot, no matter if it’s on or off.

prezes Hello, do you have the link where to buy the mirror?

Kape17 sure, ordered from the shop below. The link will take you to the size in the photo (32cm long x 3cm high). I also ordered 4cm but couldn’t make it fit at right angle.

https://www.perspexsheet.uk/perspex-made-to-measure/?plastic-type=Mirror%20Perspex&colour=Silver%20Mirror&thickness=3%20mm&length=320&width=30

prezes It looks really good. How did you manage to fix it there? I assume it is removable so you can clean the tray every now and then?

John_Yossarian I was planning on attaching some foam to support on both sides so it’s stable but flexible. Funnily enough this size just sits perfectly on its own at right angle and doesn’t vibrate or move at all so can be easy removed as and when required

That’s fine. It’s the anti vacuum

Cuprajake thanks. I was convinced it never done this before so thought I’ll check !

Yeah mine does it too

prezes Cuprajake thanks. I was convinced it never done this before so thought I’ll check !