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Unmounted my Saeco Boiler because of a leak and found a disconnected pipe
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jpcote
Senior Member


Joined: 6 Jun 2011
Posts: 4
Location: Canada
Expertise: I like coffee

Posted Mon Jun 6, 2011, 9:37pm
Subject: Unmounted my Saeco Boiler because of a leak and found a disconnected pipe
 

Hi coffee lovers,

I've received an old Saeco Espresso machine, I don't know it's model, I guess it's from the 90 or even the 80ies.
Here is the album :
Click Here (picasaweb.google.com)
https://picasaweb.google.com/jepcote/OldSaecoEspressoMachineUnmounted#

So when I first tried it, it was leaking so I've tried to tight the screws but I've broken one so I've decided to look inside if the seal was in good shape. When I opened it, a pipe fall appart. As you can see in the album, I figure it was fit to be where I show it.

So what this pipe does?
If I mount the boiler back, I don't know a lot about this Saeco functionnality, I can't see any valve, so I guess there is a trick in case too much pressure build up ???

Any cue appreciated, thank you!
JP
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smurphy917
Senior Member


Joined: 15 Jun 2011
Posts: 3
Location: Chicago, IL
Expertise: I love coffee

Espresso: Saeco Via Venezia
Posted Wed Jun 15, 2011, 7:49am
Subject: Re: Unmounted my Saeco Boiler because of a leak and found a disconnected pipe
 

Interesting that I happened upon this post. I just recently (like 2 days ago) completely dismantled my Saeco machine, a few-years-old, *$-re-branded Via Venezia, including the boiler. The tube that you found was intact inside my boiler. As I understand it, and this is pure guessing but I'm confident its a fairly accurate guess, that tube is part of the delivery valve from the boiler to the grouphead. Its basically a pressure valve assembly that ensures that not too much boiler water (preferably not any) leaks into the group until the pump is activated. It basically just restricts/combats flow at, or slightly above, boiler pressure.  However, i'm fairly sure that the valve part of it is actually at the base of the boiler. The long tube that broke off on your boiler is meant to take in water from the top of the boiler where the water is hottest--again, I'm guessing but pretty confident. The other end of the tube doesn't really attach to anywhere, it just sits slightly below the top of the boiler. What this means, is that as long as the valve is intact at the bottom, the machine should still function, but you'll get (significantly?) lower brew temperatures. This machine is not fantastic as far as temperature stability goes anyway--thats what you get with entry level equipment--so perhaps it won't even make a big difference...who knows.

As far as the leak goes, did you find a gasket between the two halves of the boiler?? Mine has one, but mine is probably a good deal newer than yours.
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jpcote
Senior Member


Joined: 6 Jun 2011
Posts: 4
Location: Canada
Expertise: I like coffee

Posted Wed Jun 15, 2011, 9:21am
Subject: Re: Unmounted my Saeco Boiler because of a leak and found a disconnected pipe
 

Thank you! You've got a good assumption.
I've been to an espresso shop close to my office and they exchange, for free, the bottom part of the boiler with a good one. This pipe is actually used for making sure the water is hottest. At the shop, i could see one waiting on the shelves for reparation, they call it Saeco Rio Vapore, I now know this machine is precisely a Saeco Rio Profi combi. I got a new O-Ring seal and there is no leak anymore.

But now I'm facing new problems. I've tested the water temp yesterday with the portafilter and it was working good (except that the temperature was only 70C but this is now a secondary problem), but this morning, with coffee and the portfilter freshly grounded, I got this NOISY sound from the pump. The water pipe get actually ejected after the pump get off from the supporting rubbers. I try to prime the pump by only opening the steam valve...  But that doesn't work... Well I don't want anything to explode... I don't have any manual priming thing for now, I guess I would need one.
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smurphy917
Senior Member


Joined: 15 Jun 2011
Posts: 3
Location: Chicago, IL
Expertise: I love coffee

Espresso: Saeco Via Venezia
Posted Wed Jun 15, 2011, 10:21am
Subject: Re: Unmounted my Saeco Boiler because of a leak and found a disconnected pipe
 

When I first got my machine--a steal from a fellow barista friend for $40!--It had been sitting dry for about 18 months, and I had the same problem with the pump. After trying some things myself, I eventually called the manufacturer's help line and was told I needed to manually prime it. I used a little squeeze bottle full of water to slowly fill the intake tubing with water and turned on the machine and opened the steam/hot water valve which turned on the pump. After some stuttering, it caught and has been fine ever since. So yes, I would recommend manually priming and then running water through the pump, boiler, and steam wand until all air is out of the system. Hopefully that will fix you up.

As far as temps go, I've never been brave enough to measure the output of my machine. I know its a cheap machine, hopefully yours is better (was that an all brass boiler? mine is just pressed steel), so I would not expect it to be anywhere higher than 190F or so. And it probably drops dramatically through the extraction. Right now I'm saving up for something a bit better, but until then, my trusty Saeco will have to suffice.
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frcn
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frcn
Joined: 23 Dec 2001
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Posted Wed Jun 15, 2011, 10:42am
Subject: Re: Unmounted my Saeco Boiler because of a leak and found a disconnected pipe
 

That tube looks similar (if not identical) to the one in the Rancilio Silvia boiler. In Silvia it is designed to channel hot water into the group in such a way that the incoming cold water from the pump, during an extraction, affects the brew temperature as little as possible.

 
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jpcote
Senior Member


Joined: 6 Jun 2011
Posts: 4
Location: Canada
Expertise: I like coffee

Posted Wed Jun 15, 2011, 11:46am
Subject: Re: Unmounted my Saeco Boiler because of a leak and found a disconnected pipe
 

frcn Said:

That tube looks similar (if not identical) to the one in the Rancilio Silvia boiler. In Silvia it is designed to channel hot water into the group in such a way that the incoming cold water from the pump, during an extraction, affects the brew temperature as little as possible.

Posted June 15, 2011 link

Yep, That's what a technician told me! Thank you for your comment.

I just come back from the workshop, my pump is broken, pumping manually doesn't help much. 75$ + 30 minutes. He will also check for the water temp, normaly it's only the white substance between the thermostat and the boiler that needs do be added.

I would had love to change the pump myself, but he told me there is some adjustments to be made... Arg... I hate not knowing everything :)
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