Behmor roasting problems after 1 year - Page 4

Discuss roast levels and profiles for espresso, equipment for roasting coffee.
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Brewzologist
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#31: Post by Brewzologist »

Pardon if I misunderstand your last post; did you pre-heat with beans IN the roaster to 200F? If so, would recommend pre-heating empty to 250F, then pull the basket out with heat-proof gloves, add beans, reassemble and start your roast at P5 as you described.

As for white pitting on the IR heating elements, I think it's normal as it ages and mine were quite pitted but worked fine. You could try watching the lower element glow as compared to upper element during normal cycling of the roaster for any big differences in intensity which may indicate the element is wearing out. But IMO, when elements fail they burn out and supply no power so if anything would expect the roast to be underdeveloped.

potterybean (original poster)

#32: Post by potterybean (original poster) »

No i preheated, then put the beans in. it actually gives me more time this way, but honestly the beans are getting worse lots more scorching now it's almost all of them. This unit is under warranty not sure why behmor thinks its operating fine.

-Mirinda

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#33: Post by Brewzologist »

Well, if Behmor support walked you through a check of your machine, then I suppose using a process of elimination the next thing would be to get some similar but different greens and roast them to rule our your current Brazilians. If that too fails then you'd have more evidence which points to the roaster as likely culprit.

EDIT: the picture in your last post shows pretty marked differences in colors of some of the beans. Did they used to roast to a more uniform color when everything was working well?

potterybean (original poster)

#34: Post by potterybean (original poster) »

Did yet another Roast, different bean. Preheat to 250 then placed beans in. Went quickly to 312 reduced p3 bring temps down once 295 put back up to p4 till 1c after crack lower to p3 to finish out 1c lowered p2 ran 2 min then p1 and cool removed manually to finish cooling externally.
Results: Scorched
-Mirinda

yufeng66

#35: Post by yufeng66 »

I have had a Behmor 2000 since January. It's doing fine with Brazil beans thus far. I did notice If I let the heating element glow bright yellow for too long, the beans will be scorched and uneven. This tends to happen if I start with a cold machine or if I increase the temperature too quickly. Preheat 3-4 minutes helped a lot. I also end up using the auto mode. The heating element is mostly dark reddish that way.
Here is how I do it.
1. preheat (1/4 and start) with the tray but without drum for 3-4 minutes.
2. 300g bean in, 1/2 and start, press start at 9 minutes and C when necessary.
3. Take the drum out and shake in front of a fan around 14:30 to 15 minutes.
The end results are not scorched but still slightly uneven. I just accept the unevenness as one of the limitation of the machine :(

potterybean (original poster)

#36: Post by potterybean (original poster) »

Behmor can roast uniformly, i have 10 months of proof. It can produce a great roast. Don't give up

I am trying beans from diff region, altitudes to watch the progress.

These are Brazilian
-Mirinda

potterybean (original poster)

#37: Post by potterybean (original poster) »

15 min is a long time to cool. Lay fan on side use rectangle colander sit beans on top of fan they cool in 4 min. Sweet marias recommends 4 min. to fast impacts beans to slow keeps cooking them. Like food it continues to cook unless you cool it down (ie ice water bath)
-Mirinda