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Help!No water pumps from grouphead, only from wand & boiler w/out spring valve
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Discussions > Espresso > Machines > Help!No water...  
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Espressoliver
Senior Member


Joined: 8 Jul 2006
Posts: 55
Location: Portlandia
Expertise: I love coffee

Espresso: Gaggia Coffee & Carezza,...
Grinder: Solis Scala (yeah!),...
Drip: Melitta cone w/ paper,...
Posted Sat Nov 30, 2013, 11:30am
Subject: Help!No water pumps from grouphead, only from wand & boiler w/out spring valve
 

Suddenly now when I turn on the pump in my Gaggia Carezza, no espresso comes out. Even with an empty basket, nothing comes out. With the pump going I can turn the steam knob and get good flow through the wand, and I even got good flow out of the boiler when I stripped away the group head parts down to and including the "spring and mushroom" valve.  Everything had been fine until suddenly it wasn't. Just now as I described my strip down experiment, it occurs to me that I should have focused more on the spring and verifying that it was still springy, but I could hear it compress when I screwed it back in place, so I don't think it was broken. I can't think of anything besides a break that would stop flow all of a sudden.

Anybody care to offer a hypothesis? I'd appreciate it! I would hate to have to junk this machine or spend more than it's worth on shipping and repairs.
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SJM
Senior Member


Joined: 17 Nov 2004
Posts: 1,718
Location: CA
Expertise: I love coffee

Espresso: SAMA (2), Maximatic, Cremina...
Grinder: K-10PB, Rancilio MD-50
Vac Pot: no like
Drip: no like
Roaster: HotTop   Huky en route
Posted Sat Nov 30, 2013, 1:11pm
Subject: Re: Help!No water pumps from grouphead
 

You've got scale :-))))

Have you been descaling it regularly?
Or just recently?
If not regularly, then you probably have a scale buildup.
If you descaled recently, you probably broke off a bit of scale that is lodged in the brew valve, in which case a paperclip could be your best friend.
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Espressoliver
Senior Member


Joined: 8 Jul 2006
Posts: 55
Location: Portlandia
Expertise: I love coffee

Espresso: Gaggia Coffee & Carezza,...
Grinder: Solis Scala (yeah!),...
Drip: Melitta cone w/ paper,...
Posted Sat Nov 30, 2013, 1:39pm
Subject: Re: Help!No water pumps from grouphead
 

Thanks for offering that answer, but can you tell me why would scale be a problem while the mushroom and spring are in place but not a problem when they aren't? When I stripped away the brew head parts, water came rushing out just fine. W  Some little kernels of scale did come out too, and it's probably overdue for a descaling (never seems urgent here in Portland, the water is so soft), so I'll go ahead and run some citric acid through it. Still, I'm having trouble picturing scale as the explanation. I'll update if this works.
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SJM
Senior Member


Joined: 17 Nov 2004
Posts: 1,718
Location: CA
Expertise: I love coffee

Espresso: SAMA (2), Maximatic, Cremina...
Grinder: K-10PB, Rancilio MD-50
Vac Pot: no like
Drip: no like
Roaster: HotTop   Huky en route
Posted Sat Nov 30, 2013, 1:55pm
Subject: Re: Help!No water pumps from grouphead
 

The thing about the scale is that bits (like the ones that you saw coming out) get dislodged and fall into the very very small spaces left after you put the valve back in place. They are too small to block the flow with the valve out of the machine.
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D4F
Senior Member


Joined: 15 Mar 2012
Posts: 2,005
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Baratza Forte-AP
Posted Sat Nov 30, 2013, 2:04pm
Subject: Re: Help!No water pumps from grouphead
 

Yep, agree, I was signing in and see that Susan already replied.

 
D4F also at
http://www.gaggiausersgroup.com/
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Espressoliver
Senior Member


Joined: 8 Jul 2006
Posts: 55
Location: Portlandia
Expertise: I love coffee

Espresso: Gaggia Coffee & Carezza,...
Grinder: Solis Scala (yeah!),...
Drip: Melitta cone w/ paper,...
Posted Fri Dec 6, 2013, 8:29pm
Subject: Re: Help!No water pumps from grouphead
 

Scale seems to have been the issue. I ran a quart of citrate solution through it, initially only through the wand, and about half way through it started flowing through the group head. Thanks for the advice!
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