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Homeroasters - Home Roasting Coffee Community » ALL ABOUT ROASTERS » Fresh Roast 8 and NEW SR 500

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Fresh Roast 500 intenals / cleaning
8675309	#1 Posted on 12/22/2019 5:00 PM
1/4 Pounder Posts: 92 Joined: August 02, 2018	So I've finally got my SR500 to perform for me over the past several months by drilling a hole in the chaff collector and inserting a temp probe and that gave me very good information - For instance on the low heat setting I could leave it there all the way into FC ( around 400-410 ) and move to medium setting way into 2C ( 450-455 )... Now I'm finding that the low setting barely gets me to the 350 mark and medium setting may get me to the 400 mark but I gotta pump to the high setting to get to 425-440-455 etc... slower too. The machine makes a whir noise like it's losing power when I adjust the fan speed ( nothing else is drawing power ) and I wonder if the lifespan (18 months??) is all it has. Can some internal part be cleaned or am I looking at buying another machine? I basically leave the fan speed on high and drop it to low fan speed if I need a quick kick-up in temp. I live in Arizona so it's dry as heck out here, machine is outside it's not a moisture issue. It's bad luck to be superstitious


renatoa	#2 Posted on 12/23/2019 1:58 AM
Administrator Posts: 2599 Joined: September 30, 2016	Could be the motor brushes wear. If the motor is the same Johnson/Mabuki RS-385 24v, as in most poppers, you can find easily an replacement.


Mcaffeinated	#3 Posted on 01/21/2021 8:50 AM
Newbie Posts: 1 Joined: January 21, 2021	I've read somewhere a warning about manually stirring the beans through browning. This led to the fans picking up chaff when the lid was off. I only acknowledge the temp drop on my second-hand FR500 whenever using the Timer buttons. Despite owning second-hand for 2 years and roasting 3x 150g batches a week, I have not had any significant drop in performance. After the third batch in a row, I do recognize the heating element struggling to maintain same ROR. Once and a while I will vacuum out the fan inlets. I'd advise lowering the fan speed as the roast progresses. And tipping the roaster instead of stirring. Just learned this about the SR800/540: Recommend a dedicated 20 Amp breaker with nothing else running on the circuit: 5:30 min mark on video https://thecaptainscoffee.com/pages/sr-300-and-sr-500-tip-sheets I definitely see a lag in fan power if I am running the vacuum for my bean-cooler.

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