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My Isomac Tea is leaking
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Discussions > Espresso > Machines > My Isomac Tea is...  
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BicaGuy
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Joined: 25 Sep 2006
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Location: Sweden-Norway-Portugal
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Posted Mon Nov 6, 2006, 12:56pm
Subject: My Isomac Tea is leaking
 

My new Isomac Tea is leaking water.  I received it only last week and this morning I discovered water dripping from underneath the machine.  I have checked that it isn't the water container and not the water tray.  I suspect the water comes from the boiler, however the temperature is not hot, so probably it is from a pipe/hose connecting from the water container (tank).  Anyone has any great ideas what it could be without looking under the hood?

Should I attempt to solve it myself or have my (italian) supplier help?
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jim_schulman
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jim_schulman
Joined: 19 Dec 2001
Posts: 3,772
Location: Chicago
Expertise: I live coffee
Posted Mon Nov 6, 2006, 2:43pm
Subject: Re: My Isomac Tea is leaking
 

It's probably that the hose has slipped of the overpressure valve -- a common problem. The overpressure valve is connected to the second hose going into the tank, it opens to keep the pressure of the shot from exceeding 10 or 11 bar (or wherever it has been set, the factory sets at 10 to 11). When the hose slips off,  the water relief drips onto the counter rather than going back to the tank.

Take of the case, and search along the pump line. There are two pressure relief valves (one's a safety) and wach has a silicone hose attached to a nipple on the valve. These hoses along with the one bacjk to the tank attach to a tee. Somewhere along the line, one of the hoses has slipped off, just put it back on.

One way to prevent this in future is to use tie wraps to secure the hoses.

 
Jim Schulman
www.coffeecuppers.com
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hamm
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hamm
Joined: 22 May 2003
Posts: 530
Location: Kettering, Ohio
Expertise: I live coffee

Espresso: Alex Duetto (1st gen)
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Drip: From the faucet occasionally
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Posted Mon Nov 6, 2006, 4:38pm
Subject: Re: My Isomac Tea is leaking
 

I had leaks in mine (still dealing with other problems too) and one was in the gasket where the heating element enters the boiler. I don't think that should go out on a newer machine though.

(edit:) I never found my leak until the machine was off and cool.  I reread your post and I missed the part where you said the water was cool.  But you still might want to check that anyway.

Hamm
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BicaGuy
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Espresso: Andreja Premium, La Pavoni...
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Posted Tue Nov 7, 2006, 1:32am
Subject: Re: My Isomac Tea is leaking
 

Thanks Jim and Hamm,

the problem only occurs wheh the machine is on and the boiler is on.  Once I have turned the machine off, the leakage stops.  Will follow your tips and have a look inside.
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iZappa
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iZappa
Joined: 14 Sep 2006
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Location: Norway
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Espresso: Isomac Millenium
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Drip: French press will do
Roaster: Gene Cafe
Posted Tue Nov 7, 2006, 3:22am
Subject: Re: My Isomac Tea is leaking
 

When you are looking for leakage, be shure to check for water stains under the exit tube of the pump. Thats where the pump connects to the water tube that takes the water into the boiler. My guess is that this is a minor and easy problem to fix. Unscrew the cover and turn it on and see if you can see any water leakage. Try butting preasure on the pump also. Some teflon tape or some tightening propably would do it.

 
Let's make the water turn black
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BicaGuy
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Posted Tue Nov 7, 2006, 6:54am
Subject: Re: My Isomac Tea is leaking
 

Takk for hjelpen, iZappa!
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BicaGuy
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Joined: 25 Sep 2006
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Location: Sweden-Norway-Portugal
Expertise: I love coffee

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Grinder: Rancilio Rocky, Braun
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Posted Thu Nov 9, 2006, 2:08am
Subject: Re: My Isomac Tea is leaking
 

Just want to tie up this one.  After having opened up the hood and turned on the machine I found that the leakage is caused by oxidation on the boiler itself.  Once the boiler starts heating up, water starts trickling out of a small hole on the edge of the boiler.  The hole, or crack to be more precise, seems to be caused by oxidation (or corrusion).  

Anyone has seen this happen before?  

I am very surprised.  If it was a hose that went loose or a clip that wasn't tightened enough I would understand it - things happen during assembly and transportation.  But when a vital metallic part has a defect so serious like this, from day 5 of use, I am seriously questioning Isomac's craftsmanship.  I hope I am slightly overreacting but never the less this is a let down.
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jim_schulman
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jim_schulman
Joined: 19 Dec 2001
Posts: 3,772
Location: Chicago
Expertise: I live coffee
Posted Thu Nov 9, 2006, 8:01am
Subject: Re: My Isomac Tea is leaking
 

BicaGuy Said:

Just want to tie up this one.  After having opened up the hood and turned on the machine I found that the leakage is caused by oxidation on the boiler itself.  Once the boiler starts heating up, water starts trickling out of a small hole on the edge of the boiler.  The hole, or crack to be more precise, seems to be caused by oxidation (or corrusion).  

Anyone has seen this happen before?  

I am very surprised.  If it was a hose that went loose or a clip that wasn't tightened enough I would understand it - things happen during assembly and transportation.  But when a vital metallic part has a defect so serious like this, from day 5 of use, I am seriously questioning Isomac's craftsmanship.  I hope I am slightly overreacting but never the less this is a let down.

Posted November 9, 2006 link

That's a serious defect. The boiler isn;t made by Isomac (it's also found on other companies' E61 machines), but they should take a look at them before they install them. The hole is probably not corrosion, since the boiler is nickel plated brass (on my machine it's the only part that looks like new after 5 years). It may have gotten damaged at some point.

In any case, unless you're good at plumbing and very patient, you'll need to return the machine, since fitting a replacement boiler will involve a lot of work.

 
Jim Schulman
www.coffeecuppers.com
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BicaGuy
Senior Member


Joined: 25 Sep 2006
Posts: 25
Location: Sweden-Norway-Portugal
Expertise: I love coffee

Espresso: Andreja Premium, La Pavoni...
Grinder: Rancilio Rocky, Braun
Drip: Braun
Posted Thu Nov 9, 2006, 11:04am
Subject: Re: My Isomac Tea is leaking
 

Will do - thanks Jim!
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1stline
Senior Member
1stline
Joined: 24 Jan 2002
Posts: 496
Location: Freehold, NJ USA
Expertise: Professional

Espresso: Undisclosed
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Vac Pot: Bodum Electric
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Posted Mon Nov 13, 2006, 5:48pm
Subject: Re: My Isomac Tea is leaking
 

BicaGuy Said:

Just want to tie up this one.  After having opened up the hood and turned on the machine I found that the leakage is caused by oxidation on the boiler itself.  Once the boiler starts heating up, water starts trickling out of a small hole on the edge of the boiler.  The hole, or crack to be more precise, seems to be caused by oxidation (or corrusion).  

Anyone has seen this happen before?  

I am very surprised.  If it was a hose that went loose or a clip that wasn't tightened enough I would understand it - things happen during assembly and transportation.  But when a vital metallic part has a defect so serious like this, from day 5 of use, I am seriously questioning Isomac's craftsmanship.  I hope I am slightly overreacting but never the less this is a let down.

Posted November 9, 2006 link

Pal,

I emailed Isomac about your situation as we were concerned that the problem may occur in the TEA II units were coming into the USA. Isomac stated that there was a batch of 100 boilers for the TEA in Europe (produced in June-July timeframe) that had a boiler defect. They recommended you take it back to the retailer to get the issue resolved.

Jim S is correct that another company manufacturers the boilers. As far as testing with water, sometimes water tests are not performed because it is sometimes difficult to remove all the water inside the lines, and in freezing weather, the water could freeze and thus damage the machine.

 
Sincerely,
Jim Piccinich
Business Partner
1st-line Equipment, LLC
www.1st-line.com

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