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Topic: First Behmor Chaff Fire - Any Suggestions? (8 msgs / 141 lines)
1) From: Seth Grandeau
I was roasting 325 grams of IMV (saved it for Christmas gifts!) on P1 and
just after I hit cool, I smelled smoke and saw sparks flying inside.  It
seemed to die out after about a minute and a half, so I let it continue on
the cooldown cycle.  I'll do a full scrubbing with Simple Green and will run
a cleaning cycle.  Any other suggestions.
I was worried that it was too big a batch of very chaffy coffee, so I'm not
surprised I got a chaff fire.  I'll dial the batch size down next time.  I'm
more concerned about anything I should do to ensure the roaster is fine.
Thanks for any help.
-Seth
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2) From: Rich
Roaster is fine.  I roast 1lb batches of Ethiopian coffee all the time 
and do not get real excited when I pull that stunt.  I mark the time 
remaining at the first crack of 1st crack and then initiate cool at 2:20 
to 3:00 later.  The 3:00 is pushing it a bit far into FC++.  Many pounds 
and very few light shows.  Never had to pitch the coffee though.
Seth Grandeau wrote:
<Snip>
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3) From: Ira
At 02:52 PM 12/22/2009, you wrote:
<Snip>
I don't think glowing chaff is really a problem. Flames and 
especially burning beans is a problem.
Ira
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4) From: Ira
At 03:15 PM 12/22/2009, you wrote:
<Snip>
I guess I should clarify. I don't think it needs you to do anything 
other than keep your face glued to the window to make sure it doesn't 
become something else.  I've seen it a number of times and the only 
side effect seems to be a really dirty spot in the left rear corner 
of the chaff tray, made by sparks on the right side looking through 
the window.  Never seen sparks on the left side.
Ira
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5) From: Rich
You get sparks on the left side if you try harder.  Roast it for another 
10 seconds and you get a bigger lump of fired chaff in the corner and 
sparks all around.  Its still about the same size clean up job.  Easy 
Off Oven Cleaner works very well on the chaff collector (only!).
Ira wrote:
  > I guess I should clarify. I don't think it needs you to do anything
<Snip>
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6) From: John Mac
Seth-
That's NOTHING compared to the 1/2lb. of Peru I incinerated the other day
when I got distracted by the kids fighting while I was roasting. I turned
the beans into pure carbon! I'm sure there was a fire but I wasn't there to
see it :) I spent a couple of hours taking the machine completely apart to
clean away the terrible burnt smell/residue ( have pictures) and put her
back together and away I went  on to roast another four batches. My smoke
suppressor coil went out some time ago but since I roast outside I didn't
seem to notice/care. It the almost two years I've had the B16 I've done this
more than once and it keeps bouncing back. Who ever says a Behmor can't
produce dark roasts doesn't know what they are talking about. I also gave up
on the cleaning cycle since it's a waste of energy and I'd rather have beans
in there when it's on ;-) Hasn't slowed it down a bit.
Cheers!
John in Nor Cal
On Tue, Dec 22, 2009 at 2:17 PM, Seth Grandeau  wrote:
<Snip>
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7) From: Seth Grandeau
Thanks for the advice, guys.  roasted tonight without incident.  Funny how
it's always the same corner. :)
On Wed, Dec 23, 2009 at 12:18 AM, John Mac  wrote:
<Snip>
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8) From: Brad Baker
On Wed, Dec 23, 2009 at 12:18 AM, John Mac  wrote:
[snip]
<Snip>
[/snip]
I would be interested in seeing those.  I asked Behmor tech support.
They had no guide to a complete disassembly. I have a victim of a
serious bean fire in need of an internal cleaning.  My early
experiments seem to show that acetone will cut through the dark resin
quickly on the bare metal surfaces, mineral spirits on the powder
coated surfaces though much more slowly.
-- 
---  b r a d  b a k e r  ---\\
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