City to Full City that is. Saturday did some more profile testing with the
USRC. The 14:30 4# auto-roast batch ran flawlessly, I mean within 5f every
30sec check point I manually logged. Tanning end at 5:30 1 f off programmed
temp, 1st crack within 5 seconds of target (10:05), EOR 14:34 instead of
14:30 programmed. Oh gee, auto-roast auto-dump missed by 4 seconds:-) Was
somewhat "ecstatic" over that roast run. Getting a good feel for the
roaster's thermal dynamics and PLC programming. (Ok, more like jumping for
joy and singing a chorus of hallelulahs:-) So decided to go for the gusto
and do a first 8 pound max capacity roast. Mid-roast an intermittent problem
reared it's ugly head, a problem which changing gas regulator had thought to
have fixed. FLAME-OUT! Aborted the auto-profile, re-ignited and continued
manual mode. A couple minutes later and wham bam no thank-you mam, no burner
again. Damn, 8 pounds of Columbia down the drain. Was getting late Saturday
evening so went home with definite mixed emotions.
Called Dan at USRC this morning and discussed the problem. He suspected the
pilot wind shield needed to be bigger or adjusted and or really thinks going
to a high flame pilot would do the trick. So while he's shipping the new
pilot I fashioned a shield from a Shitake Straw mushroom can. (Used in
today's Masaman Beef soup:-) A related issue was taking a long time for
initial ignition, which it never did when running NG in Oklahoma but has
been a problem LPG here. After adding the Shitake heat shield over a dozen
test roast starts almost instant ignition every time. Difference in NG LPG
So to really test ran an 8 pound batch Columbia, 16:14 FC no problem. Now
this is with a 3kg=7.2lb rated roaster mind you. Unlike the under powered
Diedrich IR series this USRC sucker can walk the talk with power to spare.
Actually had a minor "problem" or really just part of learning curve. A bit
low on the turning temp so next 8 pounder will raise the charge temp from
420f to 440f for a bit faster tanning stage.
We be smokin'!
Kona Konnaisseur miKe mcKoffeehttp://www.mckoffee.com/Ultimately the quest for Koffee Nirvana is a solitary path. To know I must">http://www.mcKonaKoffee.comURL to Rosto mods, FrankenFormer, some recipes etc:http://www.mckoffee.com/Ultimately the quest for Koffee Nirvana is a solitary path. To know I must
first not know. And in knowing know I know not. Each Personal enlightenment
found exploring the many divergent foot steps of Those who have gone before.
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