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Probat pictures, anyone?
Lawnmowerman
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Posted on 04/29/2012 1:36 AM
The local roaster where i purchase my green beans has graciously agreed to let me take pics of his roastery. He has a 25lb capacity and i think 250lb capacity probat gas fired for both. The larger has afterburner. Any interest? If so, any specifics that you would like to see detailed shots of? The shop will be dismantled shortly to move a few blocks away. Seems a bit daunting but if there is a need...
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
jkoll42
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Posted on 04/29/2012 5:15 AM
Of course we are interested... and pictures of everything!
-Jon
Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3
 
allenb
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Posted on 04/29/2012 8:42 AM
Internals of drums and burners would be nice.

In addition to pics please ask about heat controls for each of them. Specifically, on smaller one is it gas valve throttled manually or multi-staged?

On larger one, manually throttled, 3 stage or pulsed (proportional on-off.)

Seems the larger gas fired roasters are still a bit of a mystery on controlling the roast.

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
Lawnmowerman
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Posted on 05/04/2012 12:46 AM
Heres the first a probat l12
Lawnmowerman attached the following image:
0503120909a.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Dan
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Posted on 05/04/2012 7:07 AM

Quote

Brew a man a cup of homeroasted coffee, you spoil him for a moment or two. Teach a man to roast, he is ruined for life.


Cute!
 
Web
Lawnmowerman
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Posted on 05/04/2012 8:54 AM
more to come
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 12:18 AM
One more of the l12. Gas is throttled manually. The remainder i have for now are of the big one.
Lawnmowerman attached the following image:
0503120910a.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 12:24 AM
Here is where the beans are loaded. Up to a hundred pounds
Lawnmowerman attached the following image:
0503120911a.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 12:40 AM
The blower behind it pushes the beans up the chute into this hopper. Blower also provides convective flow in the drum
Lawnmowerman attached the following image:
0503120913c.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 12:43 AM
Gas controls are three stage for this one.
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 12:53 AM
Here is the full frontal view
Lawnmowerman attached the following image:
0503120912a.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 12:59 AM
Tried to get an internal shot on this one but poor lighting
Lawnmowerman attached the following image:
0503120915a.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 1:06 AM
The afterburner
Lawnmowerman attached the following image:
0503120912b.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 1:20 AM
The bottom of the afterburner. And some of the control machinery
Lawnmowerman attached the following image:
0503120918b.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 1:49 AM
Gas connections
Lawnmowerman attached the following image:
0503120914b.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 2:06 AM
The rear of the drum casing
Lawnmowerman attached the following image:
0503120913b.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 2:14 AM
Another shot
Lawnmowerman attached the following image:
0503120918a.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 2:22 AM
The bean cooler. Too bad the one i have with it full of beans is of too high a resolution.
Lawnmowerman attached the following image:
0503120917b.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 2:34 AM
The column in the forground is one more vacuum conveyance to get it to the last hopper, elevated so as to allow the rolling bins to park under. It takes them from the destoner, positioned at the trap door output of the cooler. A hundred pounds totally hands free!
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 2:43 AM
The damper. Has three settings. Can only be run wide open or the afterburner smoke alarm goes off. On this setup. Designated as espresso setting.
Lawnmowerman attached the following image:
0503120917a.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/07/2012 2:57 AM
And a very busy control panel. Enjoy. Thanks to don clayton of clayton coffee and tea. If you are in the central valley of california, they are topnotch.
Lawnmowerman attached the following image:
0503120915b.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
allenb
Top  #22 Print Post
Posted on 05/07/2012 3:57 PM
Thanks for taking and posting the pics. Very nice.

So the big boy is a 3 stage burner. From what I've seen over the years, the larger Probat roasters (bigger than an L-12) are typically set up that way with or without profiling capability.

If you get a chance I'd love to hear how they make changes to the heat input using the gas valve. Seems like it would be a very crude, non-repeatable control method. OTOH, that's all I've typically seen for control on the L-12 and smaller.

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
Lawnmowerman
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Posted on 05/09/2012 2:24 AM
A sacrifice had to be made in the acquisition of the foregoing probat photos. Something had to die. Allen, you wanted internal shots. I got a couple. Scott, you had mentioned something about a total roaster meltdown. I got a couple roaster related meltdown photos. The lower roasted chamber.
Lawnmowerman attached the following image:
0508122117c.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/09/2012 3:11 AM
Upper roasted chamber.
Lawnmowerman attached the following image:
0508122117b.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
Lawnmowerman
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Posted on 05/24/2012 2:44 AM
i finally got more beans and a couple more pics. Three tube burners, flat on top. Holes the entire length. Controlled by this knob.
Lawnmowerman attached the following image:
0523120818a.jpg
Bad coffee prevails when good coffee roasters stand by and do nothing.
 
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