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Water by-passing dispersion screen...(help)
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Reasnor
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Joined: 3 Apr 2002
Posts: 66
Location: Waterloo, IA
Expertise: I live coffee

Espresso: Nuova Simonelli Appia
Grinder: Mazzer Super Jolly, Baratza...
Vac Pot: Yama
Drip: Technivorm
Roaster: Popcorn Popper, SC/GG
Posted Thu May 13, 2004, 8:50am
Subject: Water by-passing dispersion screen...(help)
 

I posted this message on alt.coffee as well, but thought the responses might be quicker here.  Thanks!

I recently visited a church that has a coffee shop located in it.  I was asked to make coffee there for a function coming up so I inspected the machine ahead of time.  It is a GrindMaster espresso machine with some problems.  The biggest one, that I've noticed so far, is that though a little water comes through the dispersions screen, most of the water seems to come from the grouphead gasket area.  I want to try and fix this problem before I use their equipment.  Any ideas on what the problem is?  Could it be the gaskets?  Any help would be appreciated.  At the very worst, I'll bring my Oscar to do the job.  Thanks in advance.

Matt
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Woody
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Woody
Joined: 26 Jan 2004
Posts: 598
Location: Hood River, OR
Expertise: I love coffee

Espresso: La Spaziale Vivaldi I
Grinder: Mazzer Major
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Drip: yuck
Roaster: Behmor
Posted Thu May 13, 2004, 10:25am
Subject: Re: Water by-passing dispersion screen...(help)
 

In the location you describe (probably many different users) it's hard to say if it gets regular cleaning.  The dispersion screen could be pretty dirty.  You'll need to take it off to check and clean and probably replace the gasket in the process.

Jon
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korngold
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korngold
Joined: 21 Jul 2003
Posts: 636
Location: Des Moines, IA
Expertise: I love coffee

Espresso: Rancilio Audrey
Grinder: Rancilio Rocky
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Roaster: WE Popcorn Pumper
Posted Thu May 13, 2004, 10:37am
Subject: Re: Water by-passing dispersion screen...(help)
 

I'd take off the dispersion screen & clean it before replacing anything.  If all the holes are clogged in the screen, the water may just be finding a new way out.

Is it a professional machine, or a home-type machine?  I've seen grindmasters that look like 58mm pro setups and also a grindmaster that was the same as the starbucks/saeco barista zia.
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