maxing out due to fan speed...

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mr. bean
Posts: 38
Joined: Tue 24 Mar, 2020 12:06 am
Location: Sydney, NSW
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maxing out due to fan speed...

#1167

Post by mr. bean » Mon 29 Jun, 2020 12:00 pm

Following on from todays discussion on fan speed profile, I thought I'd post a recent roast of El Salvador Bourbon on Steve's Washed All Purpose profile (120g).
You can see it flat lines towards the end, with the ROR bottoming out in the last minute.
I had 237V, which is low for me, but probably on the higher end for lots of users (I'm gathering).
Screen Shot 2020-06-29 at 9.54.35 am.png
El Salvador with Washed AP profile
Screen Shot 2020-06-29 at 9.54.35 am.png (113.04 KiB) Viewed 897 times
log0106.klog
El Salvador with Washed AP profile
(86.42 KiB) Downloaded 79 times
Any ideas on how much the fan speed would have to come down at the 7min mark to continue supplying the necessary power?

I also note that the actual temp line is well below the blue line in the first minute, and our conversation this morning makes me wonder if the preheat charge temp should be ramped up to match the higher fan speed?

Steve
Posts: 173
Joined: Fri 30 Aug, 2019 7:04 pm
Location: NSW central coast
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Re: maxing out due to fan speed...

#1196

Post by Steve » Mon 06 Jul, 2020 5:40 pm

This would likely be fine batch size 100g.
All my profiles were specifically using 100g with 237 - 240V.

You could try swapping the fan profile for the one used in Darkside as that is a steadily decreasing slanted line as opposed to the flat line.

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