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Starbucks Sirena permanent leak repair
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dirtydabe
Senior Member


Joined: 30 Mar 2013
Posts: 1
Location: North Carolina
Expertise: I like coffee

Posted Sat Jun 8, 2013, 5:00am
Subject: Starbucks Sirena permanent leak repair
 

I picked up a Sirena a few months ago on craigslist a couple months ago quite cheap.  It worked great and has been a great learning tool.

However, last week, there was a large puddle under and around it.   I took it apart to discover that it had the typical leak in the steam line as shown in this video: http://www.youtube.com/watch?v=u0vZhzH-5X4

I decided that just replacing the flexible hose would not really fix the problem, since I could see from mineral deposits in the machine that it had failed before.   So I decided to replace the rubber hose with a copper line.  

I bought a 3 pack of 5/32" by one foot copper lines from Amazon ($3.75) and a 3/16" brass hose barb "splicer" at my local home improvement store ($2.78).  This was a lot cheaper than a replacement flexible hose, too.

I then bent the copper line so it would replace almost all of the flexible hose.   I bored out the hose barb with a drill so it would fit over the copper line.   Unfortunately, I bored it off center and destroyed one end.  The hardware store was closed by then, so I just cut it smaller and used the shorter barb ends.


http://imageshack.us/a/img94/609/img2323ha.jpg

A bit of silver solder and it started to look real:
http://imageshack.us/a/img401/5716/img2324gt.jpg

Clamp it in using stainless steel wire clamps (using a ClampTite tool: Click Here (www.amazon.com)) and it was back together.

http://imageshack.us/a/img4/588/img2327ue.jpg


So far, it is working great and I don't expect the steam line to leak again.

dirtydabe: IMG_2327.jpg
(Click for larger image)
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