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Pressure to high
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Discussions > Espresso > Machines > Pressure to high  
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Jack14
Senior Member


Joined: 8 Dec 2013
Posts: 2
Location: Canada
Expertise: Just starting

Posted Sun Dec 8, 2013, 6:37pm
Subject: Pressure to high
 

I have a La Scalla, Butterfly model. The pressure rises too high and pops the pressure relief valve. Had machine into shop on a few occasions. Couldn't resolve the problem. Ultimately, the stock relief value was replaced with a Cimbali commercial relief valve. Problem fixed temporarily, but now Cimbali relief valve popping.  Before my dog has a heart attack, does any one have a suggestion to put an end to this rather annoying problem?

Thanks very much.
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SStones
Senior Member
SStones
Joined: 24 Nov 2012
Posts: 452
Location: Canada
Expertise: Professional

Espresso: Giga 5, ECM Giotto, Rocket...
Grinder: Anfim Milano-Best
Vac Pot: No  :(
Drip: Some $30 thing from Walmart
Roaster: I buy pre-roasted.
Posted Sun Dec 8, 2013, 8:06pm
Subject: Re: Pressure to high
 

Check resistance from each terminal of the Element to boiler ground. If there's any continuity at all, that short will constantly be heating. Replace the element if it has shorted to ground, it is quite likely cracked.

Check the pressostat. Does the boiler not heat at all with the p-stat disconnected?  If it's heating with the wire removed from the p-stat, it has to be a shorted element.

Does the relief pop at less than 1.5 Bar? If not, it's working well and doesn't need replacement.
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alanfrew
Senior Member
alanfrew
Joined: 19 Dec 2001
Posts: 630
Location: Melbourne
Expertise: Professional

Posted Mon Dec 9, 2013, 12:41am
Subject: Re: Pressure to high
 

Replace your pressurestat. In Oz the parts are
1/8inch BSP thread Ma-ter XP110 Pressurestats Item code: 703013
and
1/8" F BSP to 1/4" M BSP Fitting Item code: 620399
both ex http://www.coffeeparts.com.au/misc/pressurestats .

Alan
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Jack14
Senior Member


Joined: 8 Dec 2013
Posts: 2
Location: Canada
Expertise: Just starting

Posted Mon Dec 9, 2013, 2:17pm
Subject: Re: Pressure to high
 

Thanks very much for your assistance.

Doesn't pop at less than 1.5 Bar.

I'll do as you suggested.
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