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Black specks in the water...........
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Discussions > Espresso > Q and A > Black specks in...  
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Dudley
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Joined: 20 Apr 2013
Posts: 4
Location: Vernon
Expertise: I love coffee

Posted Sat Apr 20, 2013, 12:12pm
Subject: Black specks in the water...........
 

I have a Maxim Crema model EX400 Espresso machine. I haven't used it for a while and when I ran some plain water through it there were several black specks in the cup. I ran some cleaner through the machine...no change. I ran a mixture of vinegar through again no change.

Is anyone familiar with this type of machine and if so any ideas as how to clean it or the cause of the black specks.

Thanks.
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jonbik
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Joined: 21 Apr 2013
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Location: McLean
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Posted Sun Apr 21, 2013, 7:25am
Subject: Re: Black specks in the water...........
 

Usually, black specs are just coffee grinds stuck in the group head. Occasionally, there is sediment build up in the pipes of the machine. This is what descaling should take care of. I advise you to purchase a descaling solution and use that.
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Dudley
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Joined: 20 Apr 2013
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Location: Vernon
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Posted Sun Apr 21, 2013, 8:25am
Subject: Re: Black specks in the water...........
 

Thanks I'll try that.
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GVDub
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Posted Sun Apr 21, 2013, 8:38am
Subject: Re: Black specks in the water...........
 

Maxim machines are also sold under the Salton and Black & Decker brand in the US. I would be very leery of running any descaler through the machine until you've determined whether the boiler is aluminum or stainless. or even if it has a boiler and isn't just a thermoblock machine. I can't find anything about the EX400 on line, and the EX 450 doesn't look as if it would be professional level parts or construction.

Aluminum oxide is black, so there's a possibility that you've got an oxidizing boiler. I'd do some more research into the construction of the machine.
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Dudley
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Joined: 20 Apr 2013
Posts: 4
Location: Vernon
Expertise: I love coffee

Posted Sun Apr 21, 2013, 9:59am
Subject: Re: Black specks in the water...........
 

Thanks...I'll hold off on any descaling until I find out more. Hopefully your research will find something.
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BoldJava
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BoldJava
Joined: 2 Jun 2006
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Posted Sun Apr 21, 2013, 2:35pm
Subject: Re: Black specks in the water...........
 

Dudley Said:

...

Is anyone familiar with this type of machine and if so any ideas as how to clean it or the cause of the black specks.

Thanks.

Posted April 20, 2013 link

Do you filter the water through a carbon filter.  I find that sometimes with my Britta -- carbon flecks.

 
"On the trail for the goats' grail..."

Dave Borton
St Paul, MN
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Dudley
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Joined: 20 Apr 2013
Posts: 4
Location: Vernon
Expertise: I love coffee

Posted Sun Apr 21, 2013, 2:48pm
Subject: Re: Black specks in the water...........
 

No, just use tap water.
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