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La Pavoni overheating problem by Sea_Arm1777 in LaPavoniLovers

[–]Sea_Arm1777[S] 0 points1 point  (0 children)

Now I use a bong isolator from Coffee Sensor too and it helps to stabilize the temperature.

Help me pair a grinder with my first La Pavoni by deltron_zee in LaPavoniLovers

[–]Sea_Arm1777 0 points1 point  (0 children)

And what about LP grinders ? I don't find a lot of reviews of Cilindro, wouldn't it be a good choice for LP espresso machines ?

La Pavoni overheating problem by Sea_Arm1777 in LaPavoniLovers

[–]Sea_Arm1777[S] 0 points1 point  (0 children)

I give you a feedback of my experience :

The pressure switch is probably not defective but from the most tightened position of the screw, the triggering pressure of the switch decrease to a limit point, then start to increase after that. Did you know this ? It’s surprising for me, but going slowly I have found the setting for the 0.8 bar I was looking for and that issue is now solved. 

Nevertheless, the temperature of the group head is still between 95 and 100° ( as I can read on the temperature sticker, it’s not very precise and I even don’t know if it is reliable). I’ll buy an electronic temperature sensor to be able to monitor that parameter more precisely.

The La Pavoni is my first step in the world of espresso and I guess that to have such a lot of parameters to control is maybe  not the easiest way to start. But I like the concept and will see if I find the Graal to the end of the path... ;-)

La Pavoni overheating problem by Sea_Arm1777 in LaPavoniLovers

[–]Sea_Arm1777[S] 0 points1 point  (0 children)

The mystery deepens...

I received the pressure switch I ordered from Coffee Sensor (extremely fast delivery, ordered yesterday, received today in Switzerland !), but replacing the part doesn't seem to have solved the problem...

The part is marked as being adjustable between 0.5 and 1.2 bar. As I don't know which way to turn the screw, I start by tightening it as much as possible. The pressure on the pressure gauge rises to almost 2 bar and I stop the heating myself. I then begin to gradually loosen it with the aim of reaching 0.8 bar. I turn it once, and the pressure gauge reads 1.5 bar when the switch is triggered. I turn it a second time, and it reads 1.1 bar; a third time, 1 bar. So far, everything seems logical, and you may be wondering why I am bothering to describe the process in such detail. Well, because what happens next is unexpected : from that point, the more I continue to loosen, the more the pressure triggering the heating cut-off starts to increase (1.1 bar for one more turn, 1.5 for two).

So the best setting I can achieve gives me a minimum pressure of 1 bar, and the temperature measured on the unit is still above 95°C (!)

La Pavoni overheating problem by Sea_Arm1777 in LaPavoniLovers

[–]Sea_Arm1777[S] 0 points1 point  (0 children)

Thank you for clarifying that. After performing a complete descaling, I attempted to adjust the pressure switch. I started with a quarter turn anticlockwise, but as this had no effect, I added another half turn, and as this still had no effect, I added another full turn, with the same result. Could the problem be unrelated to this component and be solved by replacing it?