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Gaggia Classic without enough pressure!
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Discussions > Espresso > Machines > Gaggia Classic...  
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sf_roma
Senior Member


Joined: 10 Jan 2008
Posts: 2
Location: San Francisco
Expertise: I love coffee

Posted Thu Jan 10, 2008, 7:01pm
Subject: Gaggia Classic without enough pressure!
 

Hello, my 6 years old Gaggia Classic over the past 3 months hads been losing pressure.
I had to grind my coffee coarser, and now it takes 45 seconds to pass 4 oz. of just water without even the portafilter placed.
I cleaned it (again) descaled it with CleanCaf 3 times. No good.

I called service, and they want $100 to look at it. Plus parts. I'm wondering how much it's going to cost. It's about $400 new, I think. And mine needs a new portafilter anyways ($50).
Any suggestions to what the problem might be and the cost of the part?
Thank you
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Philg
Senior Member


Joined: 6 Jun 2004
Posts: 51
Location: NYC
Expertise: Just starting

Posted Thu Jan 10, 2008, 8:16pm
Subject: Re: Gaggia Classic without enough pressure!
 

It's been a while since I looked at mine and I had a Gaggia Espresso, so this is just a wild guess, but when I had very little water coming through the group it turned out to be a clog in a pressure relief screw - I forget what it was called - a nut with a small plastic stopper and spring up in the group was clogged, taking it apart and cleaning it out fixed the problem. If this is on track someone else here will be able to give you detailed instructions (if you need them) it was in the booklet that came with my machine. -

Not sure this is right but if I remember right, I took off the screen, a block behind the screen, then saw the bolt, I screwed that out and took it apart to get the stopper and spring out, blew out the hole - ran a bunch of cleancaf through while I had it open, and then put it back together.

Good luck!
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stevier
Senior Member


Joined: 4 Jan 2008
Posts: 157
Location: So. California
Expertise: I love coffee

Espresso: Expobar Office Control,...
Grinder: Rancilio MD-50
Drip: Aeropress
Roaster: HG/BM
Posted Fri Jan 11, 2008, 1:15am
Subject: Re: Gaggia Classic without enough pressure!
 

Yeah - definitely check to see if it is the OPV - on my gaggia baby, the reservoir is on the bottom - on the left is the intake tube, and on the right, the OPV drips down back into the reservoir.  You could fill a cup with water, put the intake tube in that, and put an empty cup under the opv return, and see if you get lots of water in the empty cup, that would def. indicate a OPV issue.  Does the pump sound like its straining?
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sf_roma
Senior Member


Joined: 10 Jan 2008
Posts: 2
Location: San Francisco
Expertise: I love coffee

Posted Fri Jan 11, 2008, 9:44am
Subject: Re: Gaggia Classic without enough pressure!
 

Hello,
I took it apart, cleaned what was visible. Nothing.
I placed a cup under the OPV return. Not a drop.
It just trickles out from the portafilter.
Anyone else?
Thank you.
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SJM
Senior Member


Joined: 17 Nov 2004
Posts: 1,677
Location: CA
Expertise: I love coffee

Espresso: SAMA, Gaggia Classic
Grinder: K-10PB, Rancilio MD-50
Vac Pot: no like
Drip: no like
Roaster: HotTop
Posted Fri Jan 11, 2008, 11:58am
Subject: Re: Gaggia Classic without enough pressure!
 

Here are some simple diagnostic tests for your Gaggia

Click Here (home.earthlink.net)

Susan
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Philg
Senior Member


Joined: 6 Jun 2004
Posts: 51
Location: NYC
Expertise: Just starting

Posted Fri Jan 11, 2008, 9:47pm
Subject: Re: Gaggia Classic without enough pressure!
 

Sorry, so much for my guess - if it's got a 3 way valve I assume it's a different design then mine, I don't know if there'd be something up there to clog or not. Look like you've gotten some more helpful responses, good luck figuring it out.
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