Excessive chaff

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Postby farmerbarrett » Tue Mar 11, 2014 2:48 pm

Hi everyone, just joined the guild so hello to everyone.

We are having trouble with excessive chaff outside our roastery. Seems to be coming out of the chimney. We have checked air flow and cleaned out the pipes and we also got the afterburner checked and the heat increased. Its a diedrich IR - 24.

Can anyone think why or how the chaff may be getting blown out the chimney without being burnt off properly? is there too much going through?

Any ideas would be appreciated.

Thanks
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Postby farmerbarrett » Tue Mar 11, 2014 6:08 pm

Also the its not chaff in its normal form its kind of half burnt.
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Postby ChrisSchooley » Wed Mar 12, 2014 10:27 am

The chaff on the IR24 really should't be pulled through the afterburner, it should mostly go into the chaff collection chamber. If you're getting chaff pulling out, you might be overfilling the chaff collection chamber and should consider vacuuming it out more regularly. Is my personal opinion.
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Postby tiarichardson » Tue Mar 18, 2014 10:07 am

I too am having a similar problem as Chris.**

Roasting Guat on an IR 12 and getting a lot more chaff than normal. Complete Maintenance & Cleaning done. Seems that I might have an air-flow problem, but I am fairly new to this and feel as though I have covered the basics. I just thought that I would throw it out there to the more experienced.

Any suggestions on what to do? Or does the Guat in this batch more "chaffy". (Is that even a word?)

thanks in advance.
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Postby tiarichardson » Tue Mar 18, 2014 10:10 am

Let me clarify: I AM NOT having chaff "come out" as Chris has,
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Postby ChrisSchooley » Tue Mar 18, 2014 10:13 am

Hey Tia, haha, I think famrerbarret was the one with the chaff problem, i was only answering the question. If your problem is occurring with other coffees then it'll maybe be an airflow issue. If it's just this bean then the chances are that it's just this particular coffee.
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Roasting Since (Year): 2001
Website: http://www.coffeeshrub.com/.
Location: Fort Collins, CO.

Postby tiarichardson » Tue Mar 18, 2014 10:27 am

Thanks Chris! ;) Let's just say I didn't POST that correctly. (face palm)

Appreciate your feedback thank you.
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Postby Phil.Johnson » Mon May 19, 2014 4:11 pm

Sorry I'm late to the party, but I found that I would get chaff flying all asunder if the chaff collector did not have a really good seal. Just for grins you could crack the chaff collector from the cyclone just a bit and watch *all* the chaff fly up the chimney.
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