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Boiler leak/crack repair
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mthedude
Senior Member


Joined: 28 Jan 2008
Posts: 313
Location: IA
Expertise: I live coffee

Espresso: Nuova Simonelli Oscar
Grinder: La Spaziale Junior
Vac Pot: n/a
Drip: Cuisinart Grind & Brew
Roaster: n/a
Posted Fri Jun 17, 2011, 6:03am
Subject: Boiler leak/crack repair
 

Well, my NS Oscar problems keep popping up. I thought the steam leak was around the threads of the boiler safety valve so I used some JB Weld water sealant on it and it still leaked. I looked a bit closer and found the reason for the leak...see pic.

Keep in the mind, the boiler looks terrible because I removed the insulation that was already flaking off so most of that grunge is glue residue. So now it would appear a heating torch, some flux and some solder are in my future.

Anyone ever experience a solder repair on a boiler like this? Any advice?
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mthedude
Senior Member


Joined: 28 Jan 2008
Posts: 313
Location: IA
Expertise: I live coffee

Espresso: Nuova Simonelli Oscar
Grinder: La Spaziale Junior
Vac Pot: n/a
Drip: Cuisinart Grind & Brew
Roaster: n/a
Posted Fri Jun 17, 2011, 6:04am
Subject: Re: Boiler leak/crack repair
 

pic won't upload, I'll keep trying.

mthedude: IMG_20110616_165908.JPG
(Click for larger image)
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,864
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 Fri Jun 17, 2011, 8:49am
Subject: Re: Boiler leak/crack repair
 

It is hard to see on mt tiny phone screen but hard soldering is not a hard thing to do. The parts need to be VERY clean. Use a non toxic flux and lead free solder (available at the hardware store). Don't over heat the boiler, this is a comon mistake beginners make. When the flux starts to smoke, take off the heat and apply the solder, that should be all it takes for most solder repairs.

 
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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CarolinaEspresso
Senior Member


Joined: 17 Sep 2010
Posts: 40
Location: Aberdeen, NC
Expertise: Professional

Espresso: JADA by Astoria
Grinder: Nuova Simonelli
Drip: BUNN
Roaster: Probat
Posted Fri Jun 17, 2011, 10:01am
Subject: Re: Boiler leak/crack repair
 

Good answer above,

We have had copper pipes soldered for our espresso machines, from what I understand silver solder is what you have to use...

 
Carolina Espresso Repair
910.366.2044
service@carolinaespressorepair.com
www.carolinaespressorepair.com
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