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Espresso: Questions and Answers
Nuova Simonelli Ellimatic Rebuilding

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Discussions > Espresso > Q and A > Nuova Simonelli...

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Coffeenoobie
Senior Member

Joined: 11 Dec 2011
Posts: 2,313
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: Vario W

Posted Fri Mar 23, 2012, 6:15pm Subject: Re: Nuova Simonelli Ellimatic Rebuilding

See I told you not to panic. It will be fine and you will be a pro soon! Think how much you learned!

Coffeenoobie Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder. My coffee treasure map... Click Here (maps.google.com)

JDHarding
Senior Member

Joined: 31 Aug 2007
Posts: 1,099
Location: WA, USA
Expertise: I love coffee

Espresso: Ascaso Steel Pro PID
Grinder: Nuova Simonelli MDX,...
Vac Pot: None
Drip: Hario v60
Roaster: Behmor, Fresh Roast

Posted Fri Mar 23, 2012, 9:48pm Subject: Re: Nuova Simonelli Ellimatic Rebuilding

I think I know which side is positive on the heating element. One of them has some red ink on it. I bought a new thermostat 'cause I have no idea how the old one hooks up. It only cost me $10, and I probably would have blown the old one anyway by not connecting it right. The only thing I'm still having trouble with is the pressurestat. It doesn't have + or - symbols anywhere on it. There's three plugs. There's a 1, a 2, and a 4. It doesn't make any sense. I'll have to search around and find instructions on this particular pstat. Plus, the only 2 wires that reach the pstat are both blue, which also makes no sense, unless the pstat uses 2 positive connections? If that's true, then there's no wire for the negative/ground. Update: Found a picture of the pstat. Mine is the Mater pstat. Click Here (www.home-barista.com) I don't remember a wire connected to common, so the 2 wires I have were connected to normally open and normally closed. One of the cables also goes to the boiler's positive connection. So I'm guessing the boiler's cable goes to open, and when things hit the right pressure, it switches to closed and the other cable stops the boiler from continuing to heat up? Or something like that.. Another update: The over pressure valve is tightened so tightly I cannot untighten it. It seems I may need to get a new one. I wonder if the Oscar's OPV will fit the Ellimatic.

JDHarding
Senior Member

Posted Sat Mar 24, 2012, 5:34pm Subject: Re: Nuova Simonelli Ellimatic Rebuilding

Looks like I need a new over pressure valve for the group. I've heard it's set at 14 bars, which I guess is okay for now. It's way too tight to ever budge loose. I think Chris' coffee carries the right opv, but I also need a compatible 3-way valve because I can't get that loose from the opv. I've looked at Lowes and Home Depot, and neither carries the right 3-way valve. I guess the easiest route is to keep it the way it is. 14-bars is sorta high, but I can't change it otherwise. Update: And NOW it needs new steam wand gaskets! Grrrr! I'm sick of messing with this thing.

Coffeenoobie
Senior Member

Joined: 11 Dec 2011
Posts: 2,313
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: Vario W

Posted Sun Mar 25, 2012, 11:08am Subject: Re: Nuova Simonelli Ellimatic Rebuilding

But when you are done it should last a really really long time and you know it inside out. You have learned a lot, you have a lot to be proud of.

Coffeenoobie Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder. My coffee treasure map... Click Here (maps.google.com)

JDHarding
Senior Member

Posted Sun Mar 25, 2012, 12:11pm Subject: Re: Nuova Simonelli Ellimatic Rebuilding

If I want to make these brass parts shiny again, how do I go about refinishing them? I tried extra fine sandpaper and a wire brush. I thought about getting a dremel and using it's polishing tools. My only other thought is would citric acid make everything shiny again?

JtothaR
Senior Member

Joined: 20 Dec 2010
Posts: 681
Location: Albuquerque, NM
Expertise: I live coffee

Espresso: Faema D92/A1 Smart
Grinder: B VARIO, Krups Conic
Drip: Manual Pour-Over, Bodum...
Roaster: Redbird, Metropolis

Posted Sun Mar 25, 2012, 1:48pm Subject: Re: Nuova Simonelli Ellimatic Rebuilding

Citric acid makes it all look like new after an overnight soak.

Load and Lock.

JDHarding
Senior Member

Posted Sun Mar 25, 2012, 2:10pm Subject: Re: Nuova Simonelli Ellimatic Rebuilding

I found NOW Citric Acid, which is supposedly 100% pure. Only health food and vitamin stores seem to carry it. Sears also carries it, not sure why. How much should I use if I want to soak the parts in a big 5 gallon bucket? And would it eat through plastic?

JtothaR
Senior Member

Posted Sun Mar 25, 2012, 2:36pm Subject: Re: Nuova Simonelli Ellimatic Rebuilding

This is how I did it. You can see how good it makes all the parts look. As to how much to add, the more you add the stronger the solution will be and the less soak time. (Click for larger image)

Load and Lock.

JtothaR
Senior Member

Posted Sun Mar 25, 2012, 2:38pm Subject: Re: Nuova Simonelli Ellimatic Rebuilding

From 5% to 20% solution according to the label. Stronger would be for more hardcore nasty-ness or scale. (Click for larger image)

Load and Lock.

JDHarding
Senior Member

Posted Sun Mar 25, 2012, 3:03pm Subject: Re: Nuova Simonelli Ellimatic Rebuilding

Mmmm.. shiny. :D I hope mine can look that good too. Update: I decided to try using some lemon and lime juice from those plastic lemons/limes. I doubt there's any actual juice in them as they're mostly lemon/lime flavoring and citric acid. Nobody makes real juices anymore. Flavoring and citric acid is cheaper to use. I added water and also added some baking soda. The mixture turned a funny green color, then I started to notice the metal turning a brighter color, and dirt started floating on top, so the mixture seems to be working.

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