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Hi,
I am running into some problems with my roast profile on my Diedrich IR-12. Below are two15# profile roasts that I have completed and am getting a coffee taste with a flat flavor. Any help from you all would be greatly appreciated.


15# Costa

Drop 415 f – gas @ 80%

After 1 min. drop gas to 50%

Bottom out – 167 f

240 f @ 3:75 – 4:00min

280f – 50/50 air

305f @ 6:00min

370f @ 10:30 – Full air

1st crack 382f @ 11:00

Finish temperature 432f – start of second crack (15:20 min)

Roast development 4:20 min.

Coffee is flat w/o flavor


15# Guat

Drop 415f – gas @ 80%

After 1 min drop gas to 50%

Bottom out – 163f

240f @ 4:00 min

280f @ 5.5 – 6:00 min

280f - 50/50 air

305f @ 7:00 min.

370f @ 10:05 min – Full air

1st crack 381f @ 11:00min

Finish temperature 431f – start of second crack (15:42 min)

Roast development 4.42 min

Coffee is flat w/o flavor


15# El Sal

Drop 415f – gas @ 80%

After 1 min drop gas to 50%

Bottom out – 163f

240f @ 4:00 – 4:30 min

280f @ 5.5 min

280f - 50/50 air

305f @ 6:30 - 7:00 min.

370f @ 10:05 min – Full air

1st crack 376f @ 11:00min

Finish temperature 432f – start of second crack – 15:00 min

Roast development 4:00 min.

Coffee is flat w/o flavor