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Issues with technivorm sprayer
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dekerivers
Senior Member


Joined: 11 Dec 2011
Posts: 1
Location: Chicago
Expertise: I love coffee

Posted Sun Dec 11, 2011, 10:34am
Subject: Issues with technivorm sprayer
 

I have the model with the 9 hole water sprayer but i notice lately it only sprays out of all 9 holes once at the beginning of the brew cycle. I know its not clogged or anything as I onlly use filtered water and run cleancaf in the machine once a month. Anyone else run into this? seems the grounds are not being saturated properly now
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__________
Senior Member


Joined: 12 Sep 2006
Posts: 883
Location: .
Expertise: Just starting

Espresso: Awaiting spare parts ;o(
Grinder: None
Vac Pot: None
Drip: None
Roaster: None
Posted Mon Dec 12, 2011, 8:07am
Subject: Re: Issues with technivorm sprayer
 

I don't think the Technivorm spray arm is one of their best bits of design. Seem to recall it was a fairly late mod to the domestic machines.  Always seems that it would benefit from being about 1 or 2 cm longer. On mine most of the water comes out of the holes nearest the tank - I say most - not all. If they made it a bit longer, or the holes closest to the tank a bit smaller it might do a better job of evening out the spread.

I sometimes just give the technivorm filter a quick stir after a minute or so, but if I don't, it doesn't seem to make much difference to the final brew.

There are separate threads running on here about the "Bonavita" branded machine now becoming available in N.America.  I would agree with the comments made about that, in particular that the water dispersion is a whole lot better - very effective even wetting across the filter..

Have you descaled the machine ? Have only ever used puly-caf and cafiza (*), so don't know whether cleancaf is a descaler or not. Even with filtered water, if it's hard to start with, depending on how effective the filter is  you might have a scale build up inside the heater pipe which is restricting the amount of water pushed up the tube with each "pulse".

Edit (*) which aren't descalers
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rmongiovi
Senior Member


Joined: 7 Feb 2006
Posts: 405
Location: Atlanta, GA
Expertise: I like coffee

Grinder: Ditting KR805
Drip: Technivorm; Bonavita...
Roaster: Hottop B
Posted Tue Dec 13, 2011, 9:24am
Subject: Re: Issues with technivorm sprayer
 

+1.  Make it longer so the holes are centered over the basket.  Make it out of plastic so it isn't a heat sink and the water stays hot.

But since to me the big advantage of the TV is the ability to start with the basket drip turned off and stir when it gets partially filled I'm not that upset.  It's not really an automatic brewer so standing there when it starts up and giving it a stir isn't a hardship.  I keep a chopstick next to it for just that purpose.
Roy
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Eiron
Senior Member
Eiron
Joined: 12 Nov 2007
Posts: 343
Location: Loveland, Colorado
Expertise: I love coffee

Espresso: Quick Mill 0930
Grinder: Quick Mill 031,...
Drip: TechniVorm KBTS
Roaster: Behmor 1600, Presto Poplite
Posted Thu Jan 5, 2012, 1:23pm
Subject: Re: Issues with technivorm sprayer
 

rmongiovi Said:

...  Make it out of plastic so it isn't a heat sink and the water stays hot. ...

Posted December 13, 2011 link

Roy,

I actually made an insulative sleeve for my KBTS's sprayer arm, but y'know what? It made no measureable difference in the brewing temperature. That told me it's really only the initial brew water that loses its heat to the arm. Once the metal of the arm is heated, the water that follows is flowing thru a pre-heated channel & loses no additional (measureable) heat.

Also, I felt it detracted from the appearance so much that it wasn't worth keeping on the machine. :-)

 
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steamer
Senior Member
steamer
Joined: 11 Feb 2005
Posts: 894
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 Jan 6, 2012, 3:52pm
Subject: Re: Issues with technivorm sprayer
 

One thing, the basket adjustment, your grounds and adjusment may make or brake your saturation. My basket fiills to 1/2 inch of the top of basket, so I know I'm getting full saturation of grounds, my trick, 32 oz or less I use the small setting, max water, larger setting. If your grounds are just a pile in the basket, your grounds are too coarse and could me finer, or your flow is too fast. My grounds line the basket evenly all the way around and no lump in the center.
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tomd
Senior Member


Joined: 23 Jan 2012
Posts: 10
Location: Central NJ
Expertise: I like coffee

Posted Sat Feb 4, 2012, 7:15pm
Subject: Re: Issues with technivorm sprayer
 

i've taken to running an extra cup through before i brew in order to pre-heat the spray arm.....and come to think of it,  that initial cup also flushes out whatever water is internally in there from the last cycle....

but to the original question, i agree the spray arm isn't the greatest.  Maybe you can try a shim under one side, just enough to help the water flow through the length of the spray arm....i'll check it out on my own in the a.m.  But I can't see how any configuration of the setup will ever leapfrog the need to assist the saturation (close the filter for a bit, then take the cap off the filter holder and stir the wet grinds).
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