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Restoring a Nuova Simonelli Mac 2000 S 1 Group
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,883
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 Tue Jun 12, 2012, 2:20pm
Subject: Re: Restoring a Nuova Simonelli Mac 2000 S 1 Group
 

Mpotoka Said:

Ok I pulled the tube assembly back apart and figured out how it works.  The T is just like a normal T, however the tube extends from the bottom end of the T up into the heat exchanger.  Water from the pump is forced around the tube into the heat exchanger, and the pressure pushes the hot water down out the tube.

Posted June 12, 2012 link

Yep, that was the only way I could see that it would work from one end of the main tube!

 
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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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,883
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 Tue Jun 12, 2012, 2:25pm
Subject: Re: Restoring a Nuova Simonelli Mac 2000 S 1 Group
 

Well it depends on how much you have invested in this machine.
Oscar is a nice machine but though yours is older, it is a little higher up the "food chain".
with lots of nice features that Oscar does not have.

It really depends on where the issue is in the main tube. If near one end, it should not be TOO hard to have repaired, if it is in the center of the tube, that is much tougher. Either way though, a weld shop would be able to tell you how much to repair.

We are both on the same page as to testing the rest of the machine. If it all works and a weld shop can fix your boiler for a couple hun, I would keep your machine but that is just my opinion and how I am, YMMV!

 
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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Mpotoka
Senior Member


Joined: 6 Jun 2012
Posts: 18
Location: Chicago
Expertise: Just starting

Espresso: Gaggia deluxe & Nuova Mac...
Grinder: Preciso
Posted Tue Jun 12, 2012, 3:09pm
Subject: Re: Restoring a Nuova Simonelli Mac 2000 S 1 Group
 

Yup--very official now.  I put everything back together and hooked it up to water.  I took out the heating element so I could see a majority of the heat exchanger.  Sure enough, water sprayed out an inch long crack parallel with the tube, in the middle, pointing down towards the bottom of the boiler.  Pretty sure it was stored in the garage with water in it which explains this crack and the sight glass crack.  

SO I guess I need to find out if a joint like this can be removed, the pipe replaced, and re-sealed.

I'll have to find some caps/plugs to test the other elements--I need to plug it otherwise I can't even leave the water on since the city pressure trips both the pressure stat and the safety valve.  If I turn the water off then I cannot test the pump.

Bummer.

Mpotoka: photo-23.JPG
(Click for larger image)
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,883
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 Tue Jun 12, 2012, 7:54pm
Subject: Re: Restoring a Nuova Simonelli Mac 2000 S 1 Group
 

Bummer! :(

 
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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megawayne
Senior Member


Joined: 9 Sep 2010
Posts: 71
Location: Chatsworth
Expertise: I love coffee

Espresso: Expobar Pulser, Simonelli...
Grinder: Gino Rossi RR45
Vac Pot: Yes
Drip: Technivorm
Roaster: Home Built
Posted Thu Jun 28, 2012, 8:45pm
Subject: Re: Restoring a Nuova Simonelli Mac 2000 S 1 Group
 

]]I restored one of these about 2 yrs ago.  Some shops can braze the cracks inside, but you would have to find a good shop.  Any questions or issues, email me from my account email and send pics.  I will help all I can.  I have tons of pics where I tore mine down as well.  

Here is the inside of the boiler, notice the crossover tube is the HX tube.  
Click Here (i96.photobucket.com)

Here is the inside of the HX.  
Click Here (i96.photobucket.com)

Hope this helps.
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megawayne
Senior Member


Joined: 9 Sep 2010
Posts: 71
Location: Chatsworth
Expertise: I love coffee

Espresso: Expobar Pulser, Simonelli...
Grinder: Gino Rossi RR45
Vac Pot: Yes
Drip: Technivorm
Roaster: Home Built
Posted Thu Jun 28, 2012, 8:47pm
Subject: Re: Restoring a Nuova Simonelli Mac 2000 S 1 Group
 

Get yourself a cheap endoscope from Ebay, they work wonders on looking for problems.
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,883
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 Tue Oct 2, 2012, 2:10pm
Subject: Re: Restoring a Nuova Simonelli Mac 2000 S 1 Group
 

Well how is the project coming? It has been a while since this thread was updated.

 
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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megawayne
Senior Member


Joined: 9 Sep 2010
Posts: 71
Location: Chatsworth
Expertise: I love coffee

Espresso: Expobar Pulser, Simonelli...
Grinder: Gino Rossi RR45
Vac Pot: Yes
Drip: Technivorm
Roaster: Home Built
Posted Thu Mar 14, 2013, 6:11pm
Subject: Re: Restoring a Nuova Simonelli Mac 2000 S 1 Group
 

Restored one of those a few years ago.  Mine was the Mac Digit (1997 Model).  Almost identical, I tweaked my back everytime I worked on it.  I ran across a good deal on an Expobar and I sold it shortly after.  Any questions or diagrams, pm me and I can see what I got.
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