www.ptscoffee.com: without the love, it's just coffee

Restoring a 2 group La Marzocco Linea with Frozen Water Damage!

Postby godlyone on Wed Apr 06, 2011 4:11 pm

I have been looking for a 2 group linea for quite some time, but they have all been out of my price range...

I recently found one at my favorite coffee shop in Philly (Chestnut Hill Coffee) that the owner/John Hornall bought from some lady off of craigslist.

It was initially advertised as fully working, but when they went to buy it, they found that it was quite damaged!
Image

The ended up picking the machine up anyway (for MUCH cheaper than advertised obviously) and really didn't get around to doing any work on it (these guys do have a coffee shop to run lol!)

As a frequent customer there I always hinted that they should sell it to me, and they did so last week.

Here's what It looked like when I brought it home:
Image

And the tear-down begins!
Image
Image
This is where the site glass assembly (which is nowhere to be found) used to be connected

The steam boiler also had some fittings completely missing (must have broken off):
Image

After taking out the brew boiler, I was AMAZED at how powerful freezing water really is!
Image

Here is the frame, which needs some hammering and a few spot welds on the right lower side (also you can see my ghetto method of labeling the electronics with scotch tape + paper):
Image

Thankfully BOTH groups were in good shape - that was one of my main worries:
Image
I really like this picture - it seems to convey the feeling of "trying to bring it back to life"

It also has the stupid "auto-frother" which means the L side steam wand is solenoid controlled and has a thermocouple sticking out of the tip. It can be run in manual mode (turn switch off to close) or auto where it turns off at some preset temperature. Not really sure what I'm doing about this - switch back to normal or not?
Image

Here are all of the parts getting a nice descale:
Image
please note.. that is just the flowmeter bottom - YOU DONT want to stick the top (with electronics) into descaling solution!

And this last picture, I found kind of hilarious. The "Brain" of the machine has all of the wires running to it, and on the PCB they are labeled "CN1,CN2,etc".. as a medical student I literally started laughing [CN is cranial nerve]...
Image
too bad CN1 doesn't allow the machine to smell the coffee :lol:


So of course all of the gaskets/o-rings are going to be changed... but the major damage ($) was:
- brew boiler
- steam boiler
- steam heating element
- sight glass assembly + associated tubing

The steam element was not burst like the brew boiler, but as seen in the pictures, many fitting were broken off:
Image

These would all have to be welded back on, which would have even been doable, but when I was removing the heating element on the steam boiler (used paul pratt's technique with the chain vice grips holding the boiler) the steam element literally ripped a hole in the side of the boiler instead of turning out of the threads.
The boiler must have been so scaled and internally weakened that imo it would be safer to get a new boiler.

You must be wondering... WOW you bought literally a DEAD paper weight?!
I thought so too... especially after looking at prices on boilers :cry:

I called many parts suppliers, and finally got in touch with a guy (can't recommend him right now.)
He really went out of his way to give me some advice and hook me up with some EXCELLENT prices on the parts.
Needless to say, I will be doing many future orders with him!
If you need to order any parts, I highly suggest him! You can mention that you were referred by Ilya from home-barista.com forums and he may throw you a nice deal :D


Now the waiting game for parts to be delivered!
godlyone
 
Posts: 360
Joined: Feb 16, 2009
Location: New York, NY

Postby DrCoffee on Thu Apr 07, 2011 1:21 am

It's hard to really appreciate how wrecked this thing was when I picked it up with the OP...
but the pictures get close!
DrCoffee
 
Posts: 3
Joined: Feb 25, 2011
Location: Philadelphia, PA

Postby mute on Thu Apr 07, 2011 4:12 pm

Yikes, that boiler looks like a bomb went off inside. Looks like despite some big expenditures it shouldn't be that hard to restore. Subscribing for pics!
User avatar
mute
 
Posts: 85
Joined: Dec 15, 2008
Location: Phoenixville, PA

Postby mitch236 on Fri Apr 08, 2011 6:09 am

If I were replacing my steam boiler, I would consider trying to get the GB-5 boiler to work. That way, you could have preheated brew water! Looks like a fun project. Keep posting pics as you progress.
mitch236
 
Posts: 871
Joined: Jul 21, 2010
Location: Florida

Postby cannonfodder on Fri Apr 08, 2011 9:04 am

I have seen that machine many times. It sat upstairs by the roaster. I almost asked them about selling it more than once. Glad I did not. More work than I would want to do. I guess on the good side, you do not have to descale the boilers.
Dave Stephens
User avatar
cannonfodder
Team HB
 
Posts: 6812
Joined: May 23, 2005
Location: Downingtown PA

Postby Coffee-Mark on Fri Apr 08, 2011 9:23 am

I love the Linea line, .. We still have one in our training room but its been awhile since ive seen it plugged in or turned on. I was going through some old parts and found some LM keypads and my old tool for working on the group heads.

Your gonna love that machine .. the only caution i give is to make sure that wiring is not brittle, ive seen it get brittle in that era Linea!

Enjoy the journey
Mark
admittedly old school, .. but still learning new tricks!
&
I regret that i can only drink so much Espresso!
Coffee-Mark
 
Posts: 44
Joined: Mar 30, 2011
Location: Chapel Hill, North Carolina

Postby godlyone on Sat Apr 09, 2011 7:12 pm

Removed the group Diffuser today...

LM makes a 60 dollar tool for the job:

Image

I think we can improvise... haha!
Image
Image
guess where the part is from?
Works like a champ and available for rent to anyone who needs lol!
Image

Image
Group heads getting a much needed citric acid soak [lower concentration than other parts] (after a carfiza soak first)
Image
godlyone
 
Posts: 360
Joined: Feb 16, 2009
Location: New York, NY

Postby godlyone on Sun Apr 10, 2011 5:02 pm

Image

That looks a lot better!


I don't think the exhaust tubing ever looked this good!
Image
godlyone
 
Posts: 360
Joined: Feb 16, 2009
Location: New York, NY

Postby goldsholl on Fri May 06, 2011 11:40 pm

Your post is fabulous.
thanks for doing it.
I can't wait to see it done.
i'm jealous. When i worked on my cimbali jr.
it was in better shape than your linea, but
i remember long days and being exhausted and
damn frustrated. I took i phone photo's of every conceivable angle
before this gutted it.

can't wait to see the results.

btw.. how much was the boiler and did you send the photo's of the
frozen bomb to lm?

thanks
m
goldsholl
 
Posts: 6
Joined: Jul 23, 2009
Location: long beach ms

Postby jonniewishbone on Sun May 15, 2011 9:36 am

Thanks for your effort. Will be following your progress. Very interesting.
jonniewishbone
 
Posts: 19
Joined: Oct 31, 2006
Location: Canada

Next

Return to Espresso Machines