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Discussions > Espresso > Machines > Silvia pump leak  
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swartz23
Senior Member


Joined: 1 Dec 2005
Posts: 79
Location: Rochester NY
Expertise: I love coffee

Espresso: Miss Silvia
Grinder: Rancillio MD50 st
Posted Thu Sep 14, 2006, 5:17pm
Subject: Re: Silvia pump leak
 

CraigA Said:

Rich, the outermost thread on the brass fitting is flush with the outside of the white plastic outlet piece.

Posted September 14, 2006 link

Thats where i put it into, even though it wasnt befor.

Cakesniffer Said:

Out of curiosity, was this

http://coffeegeek.com/forums/espresso/machines/203779

your problem?

Posted September 14, 2006 link

Yup, I googled silvia pump leak, and nothing about that thread came up.......i just assumed it would, other threds from here have showed up.
Hopefully, it will not leak again, not thats it is hard to fix.......but just annoying.

CraigA Said:

Great!, what did you use? I'm not familiar with that area of the pump.
Look above, my P.S..

Posted September 14, 2006 link


just used some teflon tape.


Just filled the boiler, steamed some milk for hot cocoa, and filled the boiler back up, and no drops!
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Cakesniffer
Senior Member


Joined: 1 Jan 2006
Posts: 51
Location: Boulder, CO
Expertise: I love coffee

Espresso: Silvia Watlow PID
Grinder: Rocky
Drip: Bodum Kenya FP
Roaster: Calder's Coffee
Posted Thu Sep 14, 2006, 5:27pm
Subject: Re: Silvia pump leak
 

swartz23 Said:

Yup, I googled silvia pump leak, and nothing about that thread came up.......i just assumed it would, other threds from here have showed up.
Hopefully, it will not leak again, not thats it is hard to fix.......but just annoying.

Posted September 14, 2006 link

Well, it's not hard to fix the leak, but in my case the steel frame had already begun to rust.  This was less than one month in.  I noticed it only because water was coming through to the front of the machine (which is where the rust happened).

WLL was very good about it and sent me a new one--and paid for shipping the leaky/rusty one to them.

Make sure you don't have the same problem....
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swartz23
Senior Member


Joined: 1 Dec 2005
Posts: 79
Location: Rochester NY
Expertise: I love coffee

Espresso: Miss Silvia
Grinder: Rancillio MD50 st
Posted Thu Sep 14, 2006, 7:08pm
Subject: Re: Silvia pump leak
 

Cakesniffer Said:

Well, it's not hard to fix the leak, but in my case the steel frame had already begun to rust.  This was less than one month in.  I noticed it only because water was coming through to the front of the machine (which is where the rust happened).

WLL was very good about it and sent me a new one--and paid for shipping the leaky/rusty one to them.

Make sure you don't have the same problem....

Posted September 14, 2006 link

I took a look, and there was a lil rust, but it wiped away with a damp cloth, this only came  out the back, right near the cord, so none other than whats in the drip pan corners.
Hopefully when i backflush tomorrow it holds up. Does anyone know what that plastic "star" looking thing is in that plastic piece? You can see in the pic that it has a spring behind it, i guess maybe its to close it up after the return pressure drops.
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CraigA
Moderator
CraigA
Joined: 19 Dec 2001
Posts: 11,249
Location: Rexdale, Toronto, Ontario, Canada.
Expertise: I live coffee

Espresso: PID/PressureMod 2001...
Grinder: BUNN FPG-2 DBC, Baratza...
Vac Pot: Bodum Santos manual, Yama 5...
Drip: Behmor BraZen, BUNN VPR-APS,...
Roaster: Refurb Behmor 1600, BBQ...
Posted Thu Sep 14, 2006, 7:17pm
Subject: Re: Silvia pump leak
 

I'm guessing, but I believe by looking at it that it acts like a gicleur (restrictor), that dampens the positive water pulse from the vibe pump & cushions the water like a check valve on the negative or non pumping part (backpressure) of the cycle.

Dan Kehn ( dan_kehn ) has posted graphs, specs, & technical info about Ulka vibe pumps here on the forums & there's info over on the Home Barista forums also. {:-)

The Word document below is only a graph of the model Ulka E4, the bitmap (.bmp) didn't display so I put it in Microsort Word.





.

 Doc9.doc

 
http://twitter.com/CoffeegeekCraig
http://www.facebook.com/craig.andrews.169

Excellent coffee doesn't just happen!
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swartz23
Senior Member


Joined: 1 Dec 2005
Posts: 79
Location: Rochester NY
Expertise: I love coffee

Espresso: Miss Silvia
Grinder: Rancillio MD50 st
Posted Thu Sep 14, 2006, 8:29pm
Subject: Re: Silvia pump leak
 

Thanks craig and everyone else who has given a helping hand. THATS WHY I LOVE THIS PLACE
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CraigA
Moderator
CraigA
Joined: 19 Dec 2001
Posts: 11,249
Location: Rexdale, Toronto, Ontario, Canada.
Expertise: I live coffee

Espresso: PID/PressureMod 2001...
Grinder: BUNN FPG-2 DBC, Baratza...
Vac Pot: Bodum Santos manual, Yama 5...
Drip: Behmor BraZen, BUNN VPR-APS,...
Roaster: Refurb Behmor 1600, BBQ...
Posted Thu Sep 14, 2006, 8:34pm
Subject: Re: Silvia pump leak
 

Anytime Rich!

I'm glad I/we could help out, that's what it's all about! {;-D


P.S. Rich, how old is your machine?, I was just wonderin'.











.

 
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ila
Senior Member


Joined: 24 May 2012
Posts: 12
Location: Italy
Expertise: I love coffee

Posted Thu May 24, 2012, 12:54am
Subject: Re: Silvia pump leak
 

CraigA Said:

No, but I see now what you're referring too Rich! I thought you meant the area circuled in red.. {;-D

I wouldn't seal this up so that it's permanent & cannot be fixed without destroying the plastic nose piece. I'd just use a layer, at most two of teflon tape, but not enough to stress the internal diameter of the nose piece & crack it.

P.S. I'm online right now Rich with Aim & added you as a Buddy., do ya want to IM about it?

Posted September 14, 2006 link

Hi,
i'm italian. Excuse me if i write on this old discussion. On my country there is no the same culture for this coffee machines...
I've same problem with my miss Silvia. How do i do for disassembly the 90 curve? must i unscrew the nut that it's rappresented on red circle?
thank's!
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alanfrew
Senior Member
alanfrew
Joined: 19 Dec 2001
Posts: 642
Location: Melbourne
Expertise: Professional

Posted Thu May 24, 2012, 3:44am
Subject: Re: Silvia pump leak
 

ila Said:

Hi,
i'm italian. Excuse me if i write on this old discussion. On my country there is no the same culture for this coffee machines...
I've same problem with my miss Silvia. How do i do for disassembly the 90 curve? must i unscrew the nut that it's rappresented on red circle?
thank's!

Posted May 24, 2012 link

Hi Ila, you do not have to unscrew the compression fitting nut from the pipe going to the boiler. The outlet "nose" fitting of the ULKA pump rotates in place. If you look at it closely you will see notches for a 12mm spanner. You can hold the right angle fitting still and unscrew it from the pump side.

The original cause of the problem is the use of liquid thread sealant. I use plumbers teflon tape as a substitute on the threads of the right angle fitting and it fixes the leak permanently.

Alan
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ila
Senior Member


Joined: 24 May 2012
Posts: 12
Location: Italy
Expertise: I love coffee

Posted Thu May 24, 2012, 4:47am
Subject: Re: Silvia pump leak
 

Let's see if I understand. the brass fitting I keep it fixed, I keep the pump fixed, rotate only the piece of white plastic? this is my situation ...
the piece of white plastic turn respect the pump or he must turn all the pomp (with thewhite plastic)?

ila: silvia.jpg
(Click for larger image)
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