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cleaning starbucks barista machine
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jocoffee
Senior Member


Joined: 1 Jan 2010
Posts: 12
Location: Fircrest
Expertise: I love coffee

Espresso: starbucks barjista
Grinder: starbucks burr grinder
Posted Sat Nov 13, 2010, 8:06pm
Subject: cleaning starbucks barista machine
 

I am cleaning my niece's starbucks barista espresso machine today.  I ran the descaler and then let the portafilter sit in the solution for most of the day.   When I ran water thru the portafilter a lot of black/brown "stuff" came out and continued to come out thru a full tank of water.   I am now resoaking the portafilter in lemon juice.
    Is this coffee residue or mold that is coming out when I run the water thru the filter.  Yes, I did run 2 tanks of clean water thru the steam wand and espresso area prior to putting the portafilter back on after it's all day soaking
    I hope this isn't mold, but wondered if anyone out there has seen the same thing.

thanks all you experts out there in COFFEE WORLD.
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toenail
Senior Member


Joined: 8 Feb 2008
Posts: 125
Location: Maine
Expertise: I love coffee

Espresso: Modified Saeco Aroma
Grinder: Kyocera, Maestro
Drip: Bialetti Moka, Bodum press
Posted Sun Nov 14, 2010, 1:18am
Subject: Re: cleaning starbucks barista machine
 

The pressurized portafilter for this machine has many internal plastic parts that hold onto old coffee residue. If you are mechanically inclined you can take it apart and scrub it with a toothbrush. That's what I ended up doing with mine. Amazing the disgusting gunk that was lodged in there.
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AndyPanda
Senior Member
AndyPanda
Joined: 12 Jul 2010
Posts: 769
Location: San Francisco Bay Area
Expertise: I love coffee

Espresso: Olympia Cremina, Various...
Grinder: Mazzer Major, Fiorenzato,...
Vac Pot: vintage Corey
Drip: AeroPress
Roaster: BreadMachine/HeatGun
Posted Sun Nov 14, 2010, 8:20am
Subject: Re: cleaning starbucks barista machine
 

Descaler is for removing limescale (mineral deposits) from inside the boiler - it is acidic.  There would never be any coffee residue inside the boiler - only the minerals left behind after the water is boiled out. So descaler really isn't designed for removing coffee residue.

Detergent is for removing coffee oils and coffee residue. It is for the parts outside the boiler that come in contact with the coffee.

I doubt you would have any limescale in your portafilter - so soaking it in descaler (acid) isn't something I would do - especially your pressurized PF with plastic parts. Soaking it in detergent is good though.

The suggestion to take it apart and clean it is a good one - but use detergent, not descaler, to clean it.
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