HomeRoast Digest


Topic: Is my fan out on my FR-8? (5 msgs / 237 lines)
1) From: Bryan Wray
I posted this on CoffeeGeek, so I apologize for those who frequent that site as well as this list, but I am curious to know if I am missing something.
     I bought a Fresh Roast through Sweet Marias about a week ago and ran  3 batches through it over the course of about and hour and a half.  All the batches turned out well, and I was impressed with the flavor given the quick roasts and simple method so I took it into work to show a couple of my fellow baristas my new "toy."  However, when I plugged the roaster in and put the recommended 64g in, there was no bean agitation what-so-ever.  I realized that the beans on the bottom were problem burning (and they were) so I stopped the roast about 10 seconds in and had half a batch of (as Tom puts it) "Fully Carbonized" and half that were still as green as when I put them in the chamber.  Thinking that perhaps it was something to do with low voltage at work I took the roaster home to try again.  I used the same outlet (and socket even) as I had used on the first three successful roasts, and still no luck.  I thought that perhaps I had overloaded the chamber, given the type of
 bean (in this case Guat- Finca Aqua Tibia) and so I used only 50g of coffee, but with the same result: no bean agitation.  The second and third roasts that I performed went pretty dark, about 7 minutes in (for a customer/friend who likes "New Orleans Style").  By roasting two batches darker did I harm something on the roaster?  I did clean the chaff collector after each batch, and the roaster was given at least 20 minutes between each roast.  The machine still gets plenty hot (it burns the beans on the bottom in a matter of seconds) so I don't think this is the cause.  I am really stumped as to how I could have killed the roaster after only 3 batches.  Someone have some insight?
Did I just get a machine with a faulty fan, or have I done something very stupidly wrong here and not known better?
Appreciate any help!
-Bry
Bryan Wray
"It is my hope that people realize that coffee is more than just a caffeine delivery service, it can be a culinary art"- Chris Owens.
 	      
---------------------------------
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2) From: raymanowen
Please excuse me, but it is not possible for a Fresh Roast to do any
roasting in 10 seconds.
If the fan does not run on the Fresh Roast, you'll immediately notice how
QUIET it is!
Second, No Fan = NO airflow = no heat transfer = No roasting.
Mine doesn't even make much heat in 10 seconds from a cold turn-on. It is
definitely noticeable but inadequate for roasting coffee in 10sec. I was
roasting 45g samples before I stepped up to 400g roasts using a heat gun an=
d
deep bowl or bread machine  la Vicki Smith.
If you just connect the FR base unit to electric power and turn it to
, the fan should run without heat, in normal operation.
Is the roasting chamber clean, and are you weighing out the 50g samples?
What can I say- if you're doing any roasting within 10sec, maybe the clock
is busted.
Hook up a vacuum to blow, and blow air down into the base unit. It's hard t=
o
imagine the blower could get plugged up with dust and chaff after such a
short period of use, but maybe- This back flush would blow it out.
Again, if the fan doesn't work, it can't blow any heat through the beans, s=
o
no roast. Green coffee in, green coffee out. The heater doesn't make enough
heat to roast in 10sec.
Cheers -RayO, aka Opa!
"I am not a failure, I've just found ten thousand ways that won't work." -
-Thomas A. Edison

3) From: Bryan Wray
You know... your right, it may have been damn close to 20 seconds... but either way, it was just a matter of a few seconds, I know it sounds strange, but I know what I witnessed  (I was as confused as you probably are).  It's not that the entire chamber is so hot that the beans are getting scorched (such as at the end of a roast), it's that because they aren't moving, the bottom layer of beans are essentially sitting on the heating element.  It's actually very easy for a Fresh roast to roast in 10 seconds, let me tell ya!  Place a bean over an open flame or on a burner on your stove and see how long it takes for it to scorch...  That's exactly what I have happening.
The fan runs... I knew that.  I guess "out" isn't the correct word... how about, 'is/why is my fan running with lower speed than it should be despite the fact that it ran fine previously...  Did I blow something up?' 
Yes everything is clean, and I had already taken a vacuum to it before you mentioned anything.  I also used one of those air-duster things after I used the vacuum.  There was a tiny little bit of really small chaff that blew out (the stuff that makes it through the screen sometimes when you are roasting), but nothing major at all.  I am weighing out my samples with the Salter Digital scale that Tom sells on the site.  The first three batches I simply dosed by volume using two rounded scoops because my scale was at the cafe I work at.  When I went to show the baristas I weighed it out on the scale.  When it didn't work, I poured the beans back into the provided scoop twice to verify that it was (within a few beans) the same dose.  The original batch at the shop was using a 64g dose (as the SM website recommends), then the batches have gotten smaller and smaller (56g, 50g).  The one I attempted tonight was a 48g batch.
Tonight I thought I would give it another try.  I took the roaster into my garage and let it actually run through a full 5 minute cycle without any beans in it.  I then, even though there were no beans in it, checked the chaff collector to make sure it hadn't blown any chaff up into the collector, and there was none.  I left the roaster outside to let it cool and came back an hour later to try a batch with some beans.  I started my timer as I turned the dial.  I figured, "Heck, I'm outside (smoke not an issue) why not let them run through, maybe as they get lighter they will float around better, and I'll just have a burnt bottom half with a top half that turns out just great."  And, indeed the bottom did try to push it's way up through as it got lighter, but by the time I was exactly 24 seconds into the roast I had rolling second crack on the bottom half of the bean mass, and they were only just starting to circulate around.
It's not that I don't know how to roast or anything.  I have roasted probably close to 50 batches on my popcorn popper, and one of the three original batches that worked out I kept (Rwanda Buture City- other two I sold) and have been brewing and drinking and it tastes great.
I really don't know what the problem is.  Tomorrow I am going to give them a call and see what I can find out.
(and just fyi- no extension cord was used)
Again, if anyone has had similar problems (even if it was after 100 batches), any help would be greatly appreciated!
-Bry
-Bry
 
Bryan Wray
"It is my hope that people realize that coffee is more than just a caffeine delivery service, it can be a culinary art"- Chris Owens.
       
---------------------------------
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4) From: Pete
Bryan,
It sounds like the fan does run but just to slow?
You may want to take a look at this site about
adjusting the fan speed.  http://www.sweetmarias.com/freshroast_fan_adjustment.htmlSeems like this isn't the answer since you had
successful roasts and then something changed w/ the
fan speed.  Maybe if you open it up you'll see an
obvious problem like blockage or perhaps the connector
on the green coil is loose.
I haven't used a popcorn popper but I think the FR8+
is pretty similar in design.  
Is the fan as loud as it always was?  
-Pete
Message: 6
Date: Fri, 20 Jul 2007 00:31:36 -0700 (PDT)
From: Bryan Wray 
Subject: Re: +Is my fan out on my FR-8?
To: homeroast
Reply-To: homeroast
--0-1184486656-1184916696=:83968
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
You know... your right, it may have been damn close to
20 seconds...
 but either way, it was just a matter of a few
seconds, I know it sounds
 strange, but I know what I witnessed  (I was as
confused as you probably
 are).  It's not that the entire chamber is so hot
that the beans are
 getting scorched (such as at the end of a roast),
it's that because they
 aren't moving, the bottom layer of beans are
essentially sitting on
 the heating element.  It's actually very easy for a
Fresh roast to roast
 in 10 seconds, let me tell ya!  Place a bean over an
open flame or on a
 burner on your stove and see how long it takes for it
to scorch...
  That's exactly what I have happening.
The fan runs... I knew that.  I guess "out" isn't the
correct word...
 how about, 'is/why is my fan running with lower speed
than it should be
 despite the fact that it ran fine previously...  Did
I blow something
 up?' 
Yes everything is clean, and I had already taken a
vacuum to it before
 you mentioned anything.  I also used one of those
air-duster things
 after I used the vacuum.  There was a tiny little bit
of really small
 chaff that blew out (the stuff that makes it through
the screen sometimes
 when you are roasting), but nothing major at all.  I
am weighing out my
 samples with the Salter Digital scale that Tom sells
on the site.  The
 first three batches I simply dosed by volume using
two rounded scoops
 because my scale was at the cafe I work at.  When I
went to show the
 baristas I weighed it out on the scale.  When it
didn't work, I poured the
 beans back into the provided scoop twice to verify
that it was (within
 a few beans) the same dose.  The original batch at
the shop was using
 a 64g dose (as the SM website recommends), then the
batches have gotten
 smaller and smaller (56g, 50g).  The one I attempted
tonight was a 48g
 batch.
Tonight I thought I would give it another try.  I took
the roaster into
 my garage and let it actually run through a full 5
minute cycle
 without any beans in it.  I then, even though there
were no beans in it,
 checked the chaff collector to make sure it hadn't
blown any chaff up into
 the collector, and there was none.  I left the
roaster outside to let
 it cool and came back an hour later to try a batch
with some beans.  I
 started my timer as I turned the dial.  I figured,
"Heck, I'm outside
 (smoke not an issue) why not let them run through,
maybe as they get
 lighter they will float around better, and I'll just
have a burnt bottom
 half with a top half that turns out just great." 
And, indeed the bottom
 did try to push it's way up through as it got
lighter, but by the time
 I was exactly 24 seconds into the roast I had rolling
second crack on
 the bottom half of the bean mass, and they were only
just starting to
 circulate around.
It's not that I don't know how to roast or anything. 
I have roasted
 probably close to 50 batches on my popcorn popper,
and one of the three
 original batches that worked out I kept (Rwanda
Buture City- other
 two I sold) and have been brewing and drinking and it
tastes great.
I really don't know what the problem is.  Tomorrow I
am going to give
 them a call and see what I can find out.
(and just fyi- no extension cord was used)
Again, if anyone has had similar problems (even if it
was after 100
 batches), any help would be greatly appreciated!
-Bry
-Bry
 
Bryan Wray
Moody friends. Drama queens. Your life? Nope! - their life, your story. Play Sims Stories at Yahoo! Games.http://sims.yahoo.com/

5) From: Floyd Lozano
if you are having a problem after only 3 or 4 uses, don't tweak the unit is
my advice - it's still under warranty!  you can tweak it if you find it's
'working as designed'.  Otherwise, you may (will) void the warranty and then
will be on your own.
as a reference, I have 114v at the outlet on the circuit i used for
roasting, nothing else running at the time.  FR8+ roasted 50g of gethumbwini
for 8 min, got to FC (don't judge me), and 50g of El Caucho, same ending, no
scorching.  That's a tiny bean and a medium sized bean (don't know screen
sizes, just eyeballing), so if my FR8+ is indicative of standard operation,
then something is a little wonky over there with yours.
-F
ps incidentally, the gethumbwini post roast crunch was like eating a piece
of coffee flavored hard candy.  i am looking forward to brewing that in the
morning!
On 7/20/07, Pete  wrote:
<Snip>


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