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Minimum operating temperature!!

Posted: Mon 07 Dec, 2020 11:29 pm
by JamesG
We recently discovered that our kitchen extractor fan runs only in recirculating mode (!!! Our house is airtight, and actual ventilation occurs elsewhere!) so had taken to roasting outside. However, it just errored out. It is possibly around 1 degree outside, and the message said Temp <5 ... I'm assuming this means when its that cold we have to revert to roasting inside?

Re: Minimum operating temperature!!

Posted: Tue 08 Dec, 2020 1:26 pm
by kaffelogic
Yes it does. The roaster can only raise the intake air temperature by so much, so this limit has been set to ensure it can get to roasting temperature. You might want to consider using an air purifier when roasting indoors.

Re: Minimum operating temperature!!

Posted: Tue 15 Dec, 2020 11:30 pm
by JamesG
It's not usually so cold, we just happened to be out of beans. We'll just try and keep a better idea on the weather through winter :lol:

Re: Minimum operating temperature!!

Posted: Wed 16 Dec, 2020 12:20 am
by JamesG
Got round to looking at the log, and yes, it's clear it wasn't managing to hold the curve, though it was still heating at the point it aborted. Most importantly, the beans still made OK coffee!! :lol: :lol: :lol: :lol:
log0332 too cold.png
log0332 too cold.png (36.54 KiB) Viewed 5659 times

Re: Minimum operating temperature!!

Posted: Wed 16 Dec, 2020 1:35 pm
by kaffelogic
The cut off at 5 deg C is set at a point where we are pretty certain the roaster won't cope. As you have found it doesn't mean it will follow the roast profile curve just because the temperature is above 5 deg, but not following the curve is not necessarily a disaster for the coffee. We have on occasions had a roast where the roaster maxxed out and the roast fell below the profile line, and we preferred the coffee. Then it was back into Kaffelogic Studio to trace over the log line and make a new profile from that!

Re: Minimum operating temperature!!

Posted: Wed 23 Jun, 2021 7:48 pm
by Matt S
kaffelogic wrote: Tue 08 Dec, 2020 1:26 pm Yes it does. The roaster can only raise the intake air temperature by so much, so this limit has been set to ensure it can get to roasting temperature. You might want to consider using an air purifier when roasting indoors.
Do you have any suggestions as to air purifiers that work well with the kaffelogic? Does it need to be a larger unit, or would a smaller one do the job?

Re: Minimum operating temperature!!

Posted: Tue 29 Jun, 2021 3:19 pm
by kaffelogic
Matt S wrote: Wed 23 Jun, 2021 7:48 pm Do you have any suggestions as to air purifiers that work well with the kaffelogic? Does it need to be a larger unit, or would a smaller one do the job?
See the answer to your question here: https://kaffelogic.com/community/viewto ... =313#p1997

Re: Minimum operating temperature!!

Posted: Tue 29 Jun, 2021 7:31 pm
by Matt S
Thanks! Appreciate the detailed answer!