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Muddy cold water instead of coffee out of gaggia classic
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Discussions > Espresso > Machines > Muddy cold water...  
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nightrave
Junior Member


Joined: 19 May 2014
Posts: 2
Location: dubin
Expertise: Just starting

Posted Mon May 19, 2014, 10:49pm
Subject: Muddy cold water instead of coffee out of gaggia classic
 

Hi guys! This is my first post here so please excuse me if I don't do it 100% right.

Just bought a used gaggia classic and gaggia mdf grinder in addition to it. I have backflushed it, descaled it and cleaned the gasket plus changed the group gasket. The seller was claiming the machine is working fine.
I turn it on, wait for about 5 mins, grind the coffee with Gaggia MDF at level 7, put the coffee in and turn it on. Ir buzzes and then muddy cold water comes out of it. Any ideas on where should I check first?
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,672
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Tue May 20, 2014, 2:14pm
Subject: Re: Muddy cold water instead of coffee out of gaggia classic
 

Hi and welcome.

It takes about half an hour for the machine to stabilize at temp, not 5 minutes. By then though, you should be able to feel heat in the boiler if you have the machine open. If the boiler is getting hot then wait longer but if it is not getting warm, you need to check that the heater is getting power or more likely, the machine has been run dry and the heater is burned out and needs to be replaced. Off the top of my head, I seem to remember that that machine has the heater cast into the boiler so the above statement about burning it out may not apply.

 
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g0bez
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g0bez
Joined: 16 May 2014
Posts: 27
Location: Chicago, IL
Expertise: I love coffee

Espresso: Gaggia Classic
Grinder: Macap MX (eBay Specia)
Roaster: Local Roaster:...
Posted Wed May 21, 2014, 7:12am
Subject: Re: Muddy cold water instead of coffee out of gaggia classic
 

I just bought a new gaggia classic about a month ago, and I do like to let it warm up for closer to 20 - 30 minutes, but I can get hot water moving through the system within minutes... certainly under 5, and probably closer to 2.

I agree that this sounds like something with the heater / boiler. Hopefully it was not allowed to sit powered on and heat up without water in it (which can burn out the boiler). Depending on whether or not it was well maintained, it could just be a load of buildup... you may want to check out the Gaggia User Group (GUG) -- they have a great Gaggia-specific reference library and forum, and specifically give some good tips that you may find useful in troubleshooting this.

For example, here is their descaling page:

Click Here (www.gaggiausersgroup.com)

Fortunately you can pretty much disassemble the whole machine and replace just what needs to be replaced (if you're up for it, and if it comes down to needing to replace parts). The crew over at GUG have way more experience than I do...

Good luck!
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nightrave
Junior Member


Joined: 19 May 2014
Posts: 2
Location: dubin
Expertise: Just starting

Posted Wed May 21, 2014, 7:31am
Subject: Re: Muddy cold water instead of coffee out of gaggia classic
 

Thanks guys!

Went to the gaggia user group and the suggestion is, that the thermostat is faulty. Ordered new one and hope for the best!
Thank you again!
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RichardCoffee
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Joined: 2 Dec 2010
Posts: 115
Location: Long Beach
Expertise: I live coffee

Espresso: gaggia baby twin, mini...
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Roaster: weber grill with rk drum
Posted Wed May 21, 2014, 7:44am
Subject: Re: Muddy cold water instead of coffee out of gaggia classic
 

This has nothing to do with the heat, but I have a Gaggia Baby Twin and MDF grinder.  When you get the boiler working, I'd suggest you'll need to grind finer  then 7 on the grinder.  I'd start at least at 5.  Depending on the coffee, I sometimes go as low as 3.
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D4F
Senior Member


Joined: 15 Mar 2012
Posts: 1,981
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Baratza Forte-AP
Posted Wed May 21, 2014, 9:24am
Subject: Re: Muddy cold water instead of coffee out of gaggia classic
 

Just to clarify, the post on GUG mentions long warm up, not 5 minutes.  That removes warm up as the cause and changes to a b'stat problem.

 
D4F also at
http://www.gaggiausersgroup.com/
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