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Discussions > Espresso > Lever Espresso > La Pavoni safety...  
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deejayc
Senior Member


Joined: 25 Sep 2012
Posts: 3
Location: LA
Expertise: Just starting

Posted Tue Sep 25, 2012, 12:38am
Subject: La Pavoni safety valve problem
 

I just bought a pre-millennium Europiccola from craigslist from a guy who hasn't used the machine in 2 years. I descaled the machine and tried to make a shot. Problem is, after the boiler heats up after 5 minutes, steam blows out of the safety valve with ridiculous force and I have to turn off the machine. Please help!
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NobbyR
Senior Member
NobbyR
Joined: 10 Jul 2011
Posts: 2,061
Location: Germany
Expertise: I love coffee

Espresso: Poccino Opus One, Ariete
Grinder: Eureka Mignon Istantaneo
Vac Pot: N/A
Drip: Melitta Linea Unica de Luxe
Roaster: N/A
Posted Tue Sep 25, 2012, 12:57am
Subject: Re: La Pavoni safety valve problem
 

It's possible that descaling broke off a little bit of limescale which is now stuck in the safety valve.

 
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"This drink of the Satan is so delicious that it would be a shame to leave it to the infidels." (Pope Clement VIII on coffee, when he was urged to ban the beverage)
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deejayc
Senior Member


Joined: 25 Sep 2012
Posts: 3
Location: LA
Expertise: Just starting

Posted Tue Sep 25, 2012, 1:16am
Subject: Re: La Pavoni safety valve problem
 

This video shows what's happening to my machine:

http://www.youtube.com/watch?v=zrDBY62cBrI
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SeekingGodShots
Senior Member


Joined: 21 Jan 2006
Posts: 24
Location: California
Expertise: I live coffee

Posted Tue Sep 25, 2012, 6:48pm
Subject: Re: La Pavoni safety valve problem
 

While the machine is cold, use a 16mm thin walled socket wrench or a 16mm wrench* and remove the safety valve.  Carefully observe the order of components which includes a spring, valve ball and the valve.  Most likely a bit of debris or scale fused the free movement of the valve so it could not engage.  Clean.  Reassemble. Test.

*If you must use a crescent wrench, be careful in the removal and installation of the valve.  The shield reduces the contact area for the wrench and you might damage the chrome plating.

 
La Pavoni Europicola
Rocky Doserless
Barber Tampers
Technivorm Moccamaster
Hario Kettle & V60
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mayhew
Senior Member


Joined: 31 Aug 2005
Posts: 202
Location: Pittsburgh
Expertise: I love coffee

Espresso: La Pavoni Europiccola
Grinder: Baratza Maestro +
Posted Thu Sep 27, 2012, 7:12am
Subject: Re: La Pavoni safety valve problem
 

Forgive my ignorance but does that white switch have two settings on it, I and II. If so your machine is doing what it's supposed to (eg II to heat up, I for leaving it on). But I think that's for machines older than yours. I've just not seen that white switch before.

I've had that problem a lot.  As others said, pull it apart and inspect. Bicycle cone wrenches will serve you well in servicing the machine and they are fairly cheap. In my experience once you get that problem the easiest thing to do is replace the spring and plug that goes on the end.
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SteveRhinehart
Senior Member
SteveRhinehart
Joined: 27 Dec 2009
Posts: 855
Location: Syracuse, NY
Expertise: I live coffee

Espresso: 1970s La Pavoni Europiccola
Grinder: Baratza Vario, Hario Skerton
Vac Pot: Yama Tabletop 3-cup
Drip: Chemex, CCD, Kalita Wave,...
Roaster: Flavorwave/Stir Crazy
Posted Sun Sep 30, 2012, 10:52am
Subject: Re: La Pavoni safety valve problem
 

Mine does this when set to Maximo, and it is perfectly normal. The release is essentially "set" for a particular pressure, as the only means of regulating temperature/pressure in the older models. I'm not familiar with the switch type you have on your machine, but if you're heating on the high mode, this should be considered normal operation. If this is happening during the low heating mode, or if the machine has a pressurestat, however, this could be problematic, and should be addressed as the others have recommended.
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gamo6969
Senior Member
gamo6969
Joined: 6 Aug 2012
Posts: 13
Location: Taiwan R.o.c
Expertise: I love coffee

Espresso: Caravel ,Lapavoni...
Grinder: Firoenzato
Posted Fri Oct 26, 2012, 6:51pm
Subject: Re: La Pavoni safety valve problem
 

problem 1:presure switch must be reset at low position.
problem 2:presure switch does't work .replace a new one.

gamo6969: presure sw..jpg
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