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technivorm mocca master cd
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espressonewb1
Senior Member


Joined: 11 Mar 2012
Posts: 78
Location: NY metro
Expertise: Just starting

Espresso: Mini Vivaldi
Grinder: Nuova Simonelli Mdx
Drip: Technivorm Mocca Master
Posted Wed May 28, 2014, 9:09am
Subject: technivorm mocca master cd
 

I've recently gotten back into brewing drip occasionally and am having some issues with the spray arm on the technivorm. There is no uniform distribution of the coffee bed and one needs to stir in order to make this happen. The dispersion is from all of the holes in the spray arm initially and then it just jets out from the one nearest the end of the arm. I've descaled twice with dezcal but no improvement. Thinking of ordering a new spray arm but not sure it will do anything. There is some slight discoloration on the spray arm but no scale from what I can see. Looks more like rust but I think it's just the coating that wore off. I'll try to post a pic.

My water is borderline hard between 3 and 7 dkh.

If I don't stir I get an uneven extraction resulting in a bitter cup.

Just wondering what members are doing to try to fix this or if this is a common problem. A quick search here on CG seems to indicate that the spray arm does not distribute the water uniformly and it could be a common issue.

I know this is subjective but what is the brew ratio that is being used and grind setting? I've tried 25g per 1/2 liter. Brewing a 1/2 pot on the technivorm from what I remember doesn't taste the same as a full pot.

Thanks in advance.
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espressonewb1
Senior Member


Joined: 11 Mar 2012
Posts: 78
Location: NY metro
Expertise: Just starting

Espresso: Mini Vivaldi
Grinder: Nuova Simonelli Mdx
Drip: Technivorm Mocca Master
Posted Wed May 28, 2014, 9:17am
Subject: Re: technivorm mocca master cd
 

Also wanted to add that I've found brewing drip and chemex a bit more challenging that espresso.  I can replicate the espresso taste if not better that what I get at a cafe in NYC by using the mini vivaldi and/or cremina but can't with the technivorm. Tried brewing intelli house blend and when I get it at the cafe in NYC I can taste the chocolate, caramel notes. They are using a bunn grinder and brewing on a Fetco brewer.

I think I need to check the temp on the technivorm and also perhaps invest in a better grinder for drip. Using a capresso infinity right now but also have an NS MDx that I could use exclusively for drip. Suggestions welcomed.
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LiferJuice
Senior Member
LiferJuice
Joined: 27 Jul 2009
Posts: 74
Location: USA
Expertise: I love coffee

Grinder: Capresso Infinity Stainless
Drip: Behmor, Technivorm
Posted Wed Jun 18, 2014, 9:45am
Subject: Re: technivorm mocca master cd
 

I own the TV KBT-741.

  1. I only use bottled water

  2. I closed the water drain and let the grounds pre-soak for about a minute before releasing the coffee into the carafe
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__________
Senior Member


Joined: 12 Sep 2006
Posts: 919
Location: .
Expertise: Just starting

Espresso: Machine now fixed ;o)
Grinder: None
Vac Pot: None
Drip: None
Roaster: None
Posted Wed Jun 18, 2014, 3:01pm
Subject: Re: technivorm mocca master cd
 

I don't think the water distribution arrangement on the Technivorms is that brilliant (I own 2 of them) although I'm not convinced it makes that much difference to the resulting brew.  

What seems to happen is that having dripped out of the holes it sorta "sticks"to the underside of the arm and runs along and then forms into single flow from the end of the arm.  It's too long since I did physics, but is this an example of surface tension ?  In another other good brewer like the Melitta (aka Bonavita in N.America) the holes are raised from the distribution arm, and this tends not to happen. Don't know if this is the design or the fact that the water distribution arm on the Melittas is plastic as against s/s on the Technivorms (or it may be chromed copper - never looked that closely).

A temporary solution, but you need to repeat it fairly often, is to rub the underneath of the water distribution arm with just the tiniest trace of cooking oil - this seems to stop it happening.

Worth a try.
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steamer
Senior Member
steamer
Joined: 11 Feb 2005
Posts: 900
Location: socal
Expertise: I live coffee

Espresso: Expobar Brewtus IV R
Grinder: Mazzer Mini-B Baratza...
Vac Pot: Krubs Moka Brew, vacPot
Drip: TechV, and many more
Roaster: Hottop
Posted Fri Jun 20, 2014, 10:26am
Subject: Re: technivorm mocca master cd
 

having own two of the TV, I can say mine soak the ground evenly and after it is done brewing, the grounds are evenly settled on the basket. I have never had a pad pour based no grounds soaking. Understand for brews LESS than 32 ounces, you must close the bottom of the basket to the smaller opening, anything over 32 ounces of brew should you keep it fully open. I use 2 tablespoons of whole beans for each 16 oz serving.
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