HomeRoast Digest

Topic: Urnex (12 msgs / 220 lines)
1) From: MMore
I just ordered and received a big thing of Urnex from SM, planning to clean 
out my Sylvia.  I was looking at the directions, and they don't say anything 
about running it through the system - only how to use it to clean out the 
portafilter.  Is this too strong to run through the machine itself?  Did I mess up?  
Can this be run through the system to clean out scale buildup?  Did I waste 
my $12.50?
Michael A. Roaster of Vienna, Va.

2) From: miKe mcKoffee
Not a waste of $ IMO. That $12.50 of Urnex will last a LONG time. I use
Urnex for regular weekly back flush cleaning Miss Silvia (about 1/2 tsp or
3gr) which means the 20oz container good for around 200 chemical cleaner
back flushes. Plain water back flush after each shot session. Plus Cleancaf
every few months through the tank. I don't think it's advised to run Urnex
through an espresso machine, too strong.
Kona Konnaisseur miKe mcKoffee
URL to Rosto mods, FrankenFormer etc.http://mdmint.home.comcast.net/coffee/Rosto_mod.htm

3) From: MMore
Just what is a "back flush"? 
Michael A. Roaster of Vienna, Va.

4) From: Ed Needham
Urnex is not intended to dissolve scale.  It's for cleaning coffee oils.
You'll need a solution for scale to use in the boiler.
Ed Needham
To Absurdity and Beyond!
homeroaster ... d.o.t ... com

5) From: Wandering John
Ed Needham wrote:
I wish you hadn't said that Ed!  All I've ever used on the SM5K is 
Urnex.  I guess I'm glad that I run RO in the machine.   So what do you 
suggest?   My machine boiler must be getting full.
John - drinking a weak private blend (OK - Mongrel)

6) From: John Blumel
On Apr 27, 2004, at 1:33am, Wandering John wrote:
Urnex makes several products. I suspect Ed is referring to Cafiza, 
which is basically a detergent for cleaning coffee oils and other crud 
and typically recommended for backflushing, cleaning portafilters, etc.
There is also Urnex Activated Descaler (or something close to that), 
which Tom also sells. My understanding is that this is basically citric 
acid with some other chemicals that I suspect act as catalyzing and 
buffering agents, although I don't know for sure. Jim Schulman also 
suggests citric or tartaric acid in his Insanely Long Water FAQ (you 
can search Google Groups for this). There are other details in the 
ILWFAQ and I suspect there is information on what concentration to use. 
If not, maybe it's time for an update Jim.
John Blumel

7) From: Rick Farris
I'll tell you what not to use -- CLR.  It'll eat the gasket right out of
your boiler.  (Ask me how I know!)
-- Rick

8) From: John Blumel
On Apr 27, 2004, at 11:53am, Rick Farris wrote:
So Rick, how do you happen to know that?
John Blumel

9) From: Rick Farris
Let me put it this way, I'm intimately familiar with the inside of the Solis
5K.  It took about 10 weeks for the boiler[*] to begin leaking enough that
we finally figured out why the first shot in the morning was always
-- Rick
[*]They say it's a thermoblock, but it sure seems like a boiler to me.  I
wonder what the technical difference is.

10) From: Wandering John
On Tue, 2004-04-27 at 21:58, Rick Farris wrote:
I'm with you Rick - I've always called it a boiler.  What ever it is, I
cleaned mine today after all the discussion.  With the cleaner turning
white its hard to tell what it purged.  Coffee tastes good though!
John - loving life in the slow lane

11) From: Ed Needham
Urnex makes a product called Cleancaf that is intended to remove mineral
Ed Needham
To Absurdity and Beyond!
homeroaster ... d.o.t ... com

12) From: Wandering John
On Wed, 2004-04-28 at 22:50, Ed Needham wrote:
Thanks Ed - its on the way!
John - who is really trying to clean up his act :o)

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