Weird pressure gauge or pump?

If something breaks post warranty, let us know about it. Tell us how you fixed it. Let us know how much the parts cost.
Post Reply
Hatchibombotar
Freeze Dried
Posts: 2
Joined: Fri Apr 19, 2019 3:15 am
Location: Sweden

Weird pressure gauge or pump?

Post by Hatchibombotar » Wed Jun 12, 2019 5:30 am

My Vivaldi II har worked (almost) like a charm for many years until now.
The indication for the steam boiler seems to be working fine, but the indication for the brew-boiler is seriously wrong.

When the machine is turned off the gauge reads almost 15 bar!
When the boiler is at working temp the gauge reads about 7 bar.

Pulling a shot:
As the preinfusion starts the gauge vibrates a bit (like normal) and falls to about 6 bar.
When the pump activates the gauge stays at 6 bar!

This is confusing to me….

My initial reaction was that there was something wrong with the pump.
But my thoughts now is that the there is something wrong with the pressure gauge.
I believe that when the machine is turned off, the gauge shows the pressure from my water inlet.
Before I had these problems the water pressure from my inlet was not 14bar!….. I think it was about 5-7 bar.

Anyone has any idea what might be wrong?

I'm grateful for any help I can get.

MDL
Barista
Posts: 329
Joined: Sat Apr 07, 2007 11:29 am
Location: San Diego

Re: Weird pressure gauge or pump?

Post by MDL » Wed Jun 12, 2019 9:45 pm

If your coffee is still good the pump must be working correctly. Everything that you describe sounds like a failure of the gauge.

User avatar
chas
Vivaldi Dreamer
Posts: 2789
Joined: Wed Jun 02, 2004 11:52 pm
Location: Central Maryland
Contact:

Re: Weird pressure gauge or pump?

Post by chas » Thu Jun 13, 2019 8:24 am

If you turn off the water supply and disconnect the water hose from the VII the pressure gauge should show zero. If it does not it probably is the gauge.
Chas
LM GS/3 & LaSpaziale Dream v 1.23 (US 120V)
Mazzer Kony E, Customized Rocky
Hottop P/B

Hatchibombotar
Freeze Dried
Posts: 2
Joined: Fri Apr 19, 2019 3:15 am
Location: Sweden

Re: Weird pressure gauge or pump?

Post by Hatchibombotar » Fri Jun 14, 2019 5:30 am

Good idea chas!

When i disconnected water supply, the gauge went to zero 🙁 (damn... this could get expensive)
I think there was some kind of relief of pressure when i disconnected.

Weird thing is that when connecting water again the pressure reads about 6 bar.

Same thing as before... when i activate the pump the pressure stays at 6 bar but the gauge is vibrating a bit.

Any ideas what could be wrong?

Post Reply

Return to “VII Out-of-Warranty Problems”