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Behmor will not crack
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microb
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Joined: 13 May 2010
Posts: 35
Location: canada
Expertise: I live coffee

Espresso: Saeco Aroma w/ Naked...
Grinder: Baratza Vario
Roaster: Behmor 1600
Posted Thu Jan 23, 2014, 2:34pm
Subject: Behmor will not crack
 

Hi guys,

My behmor started to take longer time recently to make it to 1st crack. When I noticed the difference, I went in and cleaned thoroughly as per their instructions (with simple green and all), and it did make a huge difference. For a week or so, all went well.

Then it started again, but this time, it went downhill quite fast. On the 3rd roast today, it was light-brown-yellowish after 1lb/P1-B++ - which is the max time/temp one can get, with only 0.5lbs in there.

I opened the behmor up after the cooling session, and everything was quite hot in there. Usually, it's warm, but not hot.

So I opened the back cases and side panel, and started a cooling cycle, and indeed, the fan turns slowly (like 100 rpm max).

I also looked at the sensors "inside" the behmor - they're clean as clean can be.

My questions to you:

1) Do you think the cooling fan can have any impact on the roast itself? Can it be it cannot evacuate the smoke, so the sensor shut down the elements for too long (wrongly)?

2) Is it the time for replacement? If yes, should I stick to Behmor knowing that I roast average 10lbs of coffee per week (I roast for some others as well)?

3) Anyone has any suggestions on things to try? I tried multiple outlets - all same results. The one I currently use used to work fine (I'm in Quebec, Canada and our electricity is quite stable).

Thanks!

M
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CraigA
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CraigA
Joined: 19 Dec 2001
Posts: 11,242
Location: Rexdale, Toronto, Ontario, Canada.
Expertise: I live coffee

Espresso: PID/PressureMod 2001...
Grinder: BUNN FPG-2 DBC, Baratza...
Vac Pot: Bodum Santos manual, Yama 5...
Drip: Behmor BraZen, BUNN VPR-APS,...
Roaster: Refurb Behmor 1600, BBQ...
Posted Thu Jan 23, 2014, 2:54pm
Subject: Re: Behmor will not crack
 

Hi Michel,

How old is the roaster?
Can you measure your outlet voltage with a volt/ohm meter, & if you can., what is the AC voltage please?

Is the side circuit boards cooling fan blades (directly above the right hand 2/3'rd side of the board) covered/plugged up in chopped up fuzzy chaff?
Is the rear end back of the roasters bean cooling fan (long squirrel cage fan) covered/plugged up too/also?

The roast program "B" cycle will cause the roaster to cycle (turning the heating elements on/off) more often.

That's a lot of roasting every week, & possibly the nichrome heating elements aren't up to snuff.

 
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kboom1
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kboom1
Joined: 31 Aug 2009
Posts: 310
Location: Northeastern Pennsylvania
Expertise: I live coffee

Espresso: Alex2HX,Alex Duetto,Rancilio...
Grinder: Rancilio Rocky,Vario
Roaster: Behmor x2 / USRC Sample...
Posted Fri Jan 24, 2014, 6:34am
Subject: Re: Behmor will not crack
 

Sounds like your elements might need replaced. They start to weaken at around 200 lbs. I have to replace my elements once a year.  Try leaving the stainless baffle off the back to promote better air flow around the temp sensors while doing a roast. Bet your time will improve. I also took notice that after the bean cooling fan gets gunked up with coffee oils roast times seem to get a little longer but I have found no good way to clean the fan/turbine. the vanes are thin and bend easy.
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