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Quickmill Anita Boiler Pressure Shut Off
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GRC123
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Joined: 10 Dec 2009
Posts: 20
Location: Santa Barbara
Expertise: I live coffee

Posted Tue Oct 1, 2013, 9:38pm
Subject: Quickmill Anita Boiler Pressure Shut Off
 

My 4 year old Anita is not behaving properly. It seems that the boiler pressure will continue to rise well beyond its shut off limit such that it eventually trips the GFC breaker in my kitchen. I flipped the breaker back on and watched the pressure gauge as the machine reheated up. The pressure climbed right up past normal and was still climbing past 2.3 when I shut it down.

Any ideas what is going wrong?
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,949
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Wed Oct 2, 2013, 4:36am
Subject: Re: Quickmill Anita Boiler Pressure Shut Off
 

Anita is a HX machine, the most common way to regulate temp on a HX machine is with a pressure stat, it sounds like the Pstat has failed.

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

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GRC123
Senior Member


Joined: 10 Dec 2009
Posts: 20
Location: Santa Barbara
Expertise: I live coffee

Posted Wed Oct 2, 2013, 7:17am
Subject: Re: Quickmill Anita Boiler Pressure Shut Off
 

I just got off the phone with Chris Coffee (those guys are amazing) who confirmed it was my pressure stat.
$36 + shipping and I'm back in business.
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,949
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Wed Oct 2, 2013, 9:37am
Subject: Re: Quickmill Anita Boiler Pressure Shut Off
 

I love a happy ending. Too bad about being out of order until the part gets there but at least, it was inexpensive :D

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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SStones
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SStones
Joined: 24 Nov 2012
Posts: 506
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 Fri Oct 4, 2013, 4:06am
Subject: Re: Quickmill Anita Boiler Pressure Shut Off
 

GRC123 Said:

My 4 year old Anita is not behaving properly. It seems that the boiler pressure will continue to rise well beyond its shut off limit such that it eventually trips the GFC breaker in my kitchen. I flipped the breaker back on and watched the pressure gauge as the machine reheated up. The pressure climbed right up past normal and was still climbing past 2.3 when I shut it down.

Any ideas what is going wrong?

Posted October 1, 2013 link

I would check both element leads for a short to boiler ground...

Your element is cracked, filled with water and short-circuited through boiler-water to body-ground...
Even when the pressostat is open (Off) current continues to flow through the element and boiler, and pressure keeps going up...  The hotter it gets, the more surface area of the element is shorting until...  Well, you're the one who gave the most obvious clue.  Your GFCI told you.

Sorry. I wish I'd read this wednesday.  But replacing the P-Stat as well isn't going to hurt. Pressostats do age.
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GRC123
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Joined: 10 Dec 2009
Posts: 20
Location: Santa Barbara
Expertise: I live coffee

Posted Fri Oct 4, 2013, 9:24am
Subject: Re: Quickmill Anita Boiler Pressure Shut Off
 

My hypothesis is that the first time my machine over pressurized (from whatever cause), the pressure relief valve opened releasing moisture inside the case seeping into contacts, causing the short and GFC trip. It continued to trip no matter what the pressure indicated. I opened the case up and let it air out and don't have the GFC breaker tripping anymore. In fact, now when I turn on the machine, it acts normally - comes up to pressure and shuts off as it should, maintaining the proper pressure. So I don't know if the P stat malfunctioned originally to cause the pressure relief valve to open. Regardless, I'll get the new one tomorrow, install it and hope all is good.

If I had a cracked element, wouldn't it malfunction each and every time?
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GRC123
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Joined: 10 Dec 2009
Posts: 20
Location: Santa Barbara
Expertise: I live coffee

Posted Tue Oct 8, 2013, 6:40am
Subject: Re: Quickmill Anita Boiler Pressure Shut Off
 

After installing the new pressure stat and setting the boiler pressure, all seems well.
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