HomeRoast Digest


Topic: Hottop Roasting Profiles (5 msgs / 208 lines)
1) From: Lex Johnson
I've been roasting with a programmable HotTop roaster for about 6 months and
would love to see some roasting profiles from other HotTop programmable
roasters.
Thanks,
-Lex
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2) From: Cameron Forde
Lex,
So is Michael sending you a replacement board?  I'd recommend swapping
out the old one.  The added power from the new board provides a lot
more control over your roast.
As far as profiles go I'm still working on getting experience with my
newly converted HT-B.  I'm shooting for 15-20F/min ramp to start of
first and then about 3 min to start of second.  In terms of the
settings for the fan and the heater, I start with the fan off, at 3
min run the fan at 25%, at 7 min increase to 50% fan, at 12 min
increase to 75% fan and then 100% fan at first crack.  The heater
starts at 100% and I drop it to 90% at the 12 min mark (1 min before
first), decrease to 80% at first crack, then decrease by 10% each
minute (still working out the details here).  This is loosely based on
a profile that Mike Chester posted here a few weeks ago.
I roasted four batches of Tanzania Ngorongoro to FC with this profile
last weekend.  First crack was within fifteen seconds of 13 min each
time and I stopped the roast just at second crack between 16-17 min
total.  I've been enjoying this roast this week.  My roasts of this
coffee before the upgrade weren't very good.  I also roasted up some
Monkey with the same profile and it will hit the grinder this weekend.
 Looking forward to tasting the difference from the upgrade.
Hope that helps,
Cameron
PS I've tried to send this half-a-dozen times without success.
On Fri, Feb 29, 2008 at 4:52 PM, Lex Johnson  wrote:
<Snip>
-- 
ceforde
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3) From: Barry Luterman
These are the three I use the most besides the 2 that are pre programmed in
by Hottop.To stay away from the confusing C,FC etc descriptions I will
describe the roast instead:
 Used for Espresso Type 20 sec into 2nd crack
Segment    Time    Temp    Fan
1                    2        245        off
2                    1:30    291        off
3                    2:30    333        off
4                    1:30    351        off
5                    1:30    369        off
6                    2:00    392        2
7                    2:00    400        2
8                    3:00    405        2
End of First not approaching 2nd
Note: Put beans in when Temp reaches 250 degrees (pre-heat roaster)
Segment    Time    Temperature    Fan
1                    3:00    243                    off
2                    1:30    291                   off
3                    3:00    333                   off
4                    1:30    351                   off
5                    1:30    369                   off
6                    1:30    392                    2
7                    1:30    392                    2
8                     3:00    401                   2
Verge of 2nd couple of snaps into 2nd (My most used profile:Extend time as
needed
Segment    Time    Temp    Fan
1                   3:00    243        off
2                   1:30    291        off
3                    3:00    333       off
4                    1:30    351       off
5                    1:30    369       off
6                    1:30    392        2
7                    1:30    400        2
8                    3:00    405        2
On Fri, Feb 29, 2008 at 2:59 PM, Cameron Forde  wrote:
<Snip>
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4) From: Lex Johnson
Hi Cameron:
Here's what Micheal had to say:
	Just wanted to make it clear regarding main power supplier board....
We introduced KN-8828P back in Jan./Feb. of 2007. At that time, we produced
(50) KN-8828P main power supplier board (said old P main circuit board).
Later on, we come up with KN-8828B model. At that time, we found out the old
P main circuit board can't be used for B. To make the main power supplier
board to work for both P and B, we need to replace the 6-pin component, so
we only need to manufacture ONE power supplier board for both P and B
models. 
 
This also means the old P main circuit board can only work for KN-8828P. The
newer main circuit board will work for both P and B. So if you are
converting from old P main circuit board to KN-8828B, then you need the
newer version of main circuit board. Since you are asking from P to B, that
is why I need to know which main power supplier board you have. Having say
that, if you are not going to covert from P to B, you don't need to swap out
the old P main circuit board. But if you don't feel comfortable or would
like to swap it out later, I will send you a newer main circuit board for no
charge.
 
They are nothing to do with the voltage or roasting results
 
Michael
-Lex

5) From: Cameron Forde
Lex,
Nice to know that there wasn't a problem, but that they were still
willing to fix it!  Thanks for letting us know.
Cameron
On Fri, Feb 29, 2008 at 7:42 PM, Lex Johnson  wrote:
<Snip>
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ceforde
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