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
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".
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
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 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.
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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