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Hottop-B-2 End of roast question
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frcn
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Posted Mon Feb 13, 2012, 10:26am
Subject: Re: Hottop-B-2 End of roast question
 

KN-8828B-2K owners manual update.

An Interim Update to the owners manual for the KN-8828B-2k has just been added to the Hottop USA website.
It can be downloaded from this page.  The direct link for the addendum PDF is HERE. This is not a complete manual. It only includes the KN-8828B-2K section (for the most part). All other models should continue to refer to the appropriate manual, and all other important information regarding the KN-8828B-2K is in the current printed manual, a PDF version of which can be downloaded HERE.

 
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s0ckeyeus
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Posted Tue Feb 28, 2012, 6:24pm
Subject: Re: Hottop-B-2 End of roast question
 

robertl Said:

I lower the heat during the drying phase around 250f on the HT display and keep it there until around 290f. I found that the HT temp probe is accurate for a brief time period around 250f. Prior to that the HT temp is higher than the actual BT and after 250f the actual BT is higher than the HT temp. After my warranty expires I plan on installing a BT and ET probe for data logging.

Posted February 7, 2012 link

You can get a BT into the roaster without any real mods.  I took a wire thermocouple and passed it through one of the seams in the plastic casing, then routed the thermocouple through a few existing holes in the roaster.  I was able to position the thermocouple at the front of the roaster and angle the tip down so it gets solid contact with the bean mass, but doesn't hit the fins of the roaster.  It might not be perfect, but it has given me consistent results for months.  I can post pics sometime if anyone is interested.

 
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gregr
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Posted Tue Feb 28, 2012, 9:06pm
Subject: Re: Hottop-B-2 End of roast question
 

I'd love to see how you're getting that probe in there.
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RichHelms
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Posted Mon Sep 3, 2012, 5:33am
Subject: Re: Hottop-B-2 End of roast question
 

A common approach to put probes on a HotTop is via the bean chute cover. I believe the KN8828B-2K has the same chute setup.

This page documents my setup http://coffeetroupe.com/coffeetroupe/?p=130

This page the software we use to monitor the roast http://coffeetroupe.com/artisandocs/your-first-roast/
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gregr
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Posted Mon Sep 3, 2012, 6:23am
Subject: Re: Hottop-B-2 End of roast question
 

Thanks for the links- I ended up going with two wire probes- ET just above and BT just below the built in sensor. Been happily roasting away with Artisan and more accurate data ever since-- all thanks to the folks like you that paved the way.
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