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Tag Archives: Coffee Roaster

  • Probat L12 Coffee Roaster Restoration Project | Part 3

    Posted on July 8, 2013 by Venia Coffee Roasters | Keith

    OK, We have been busy, busy, busy around here and I haven't gotten around to an update on the our Probat L12 Coffee Roaster restoration project. Thanks for all the interest in the project, we are sorry to keep you waiting!

    Tear-down has been a bit slower than I had hoped, but the need to document the process so re-assembly will happen smoothly is important. I really don't want to finish putting the roaster back together only to have that proverbial extra mystery part in hand leaving scratching our heads...more to come on that.

    Drum removal had me a bit nervous as I didn't really know exactly how heavy it was going to be. The good folks a Probat Burns said it was s 2-3 person job. Turns out it was a bit easier than anticipated. Whew!


    Drum Removed


    Up to now, we have run into 5 bolts and screws that would not break loose easily. One has required a tap and die set to remove, others broke loose with plenty of PB Blaster and patience, while two snapped off entirely.

    One of the broken bolts was one of the tie-rods that hold the front and rear plates of the roaster together. After nearly 30 minutes of trying to coax the nut loose with everything at my disposal, I busted out the air-ratchet. Within 5 seconds the end of the tie-rod snapped off. Doh! Not sure if these are replaceable but something I think we can easily fabricate on the lathe using some rod stock.


    Tie Rod holding drum together.  Tie Rod holding drum together.

    Broken Tie Rod Broken Tie Rod


    The other breakage occurred from the threaded rod that holds the heat shield in place that protects the drum from direct flame contact from the burners. Three of the four came right off, but the fourth wouldn't budge. Knowing this was an easy rod to replace I intentionally gave the socket wrench a full 1 1/2 turns before the snapped in half.


    Heat shield. Heat shield.

    L12 Disassembly_20130706_0410 Hole where the burner assembly resides.

    Doh! Doh!


    Turns out the rear bearing on the drum is the same used on KTM 450 4-stroke motorcycles...who knew?


    L12 Disassembly_20130706_0400

    Rear drum bearing & assembly.  Rear drum bearing & assembly.  It looks like at some point the roaster was operated without the bearing in place as there is a significant amount of wear where there should be no contact with the drum shaft.  Perplexing.


    My day ended a bit short when I realized that a special tool would be required to disassemble the rear cooling tray agitator bearing.


    Cooling try agitator rear bearing. Cooling try agitator rear bearing.

    Thinking a special tool that we don't have is needed to remove... Thinking a special tool that we don't have is needed to remove...


    Once the rest of the roaster is stripped down we will start the sand blasting process in preparation of powder-coating.


    Calling it a day. Calling it a day.


    On clean-up, I discovered this little piece.  I currently have no clue where it came from.  could it be the proverbial extra part?

    The proverbial extra part. The proverbial extra part.



    This post was posted in News and was tagged with Coffee Roasting, Coffee Roaster, Probat, Probat L12 Rebuild

  • Probat L12 Project | Part 2

    Posted on June 5, 2013 by Venia Coffee Roasters | Keith

    Quick update:

    The Probat L12 arrived this morning to our secret lair where she will live during the restoration. Lost a few heartbeats bringing her down off the truck, but it went really smooth, all things considered.




    The driver didn't know what it was. His response when I told him was, "I was thinking it might be a still of some sort". I might be wishing it myself come a few weeks.




    Can't hardly wait to give her a thorough inspection and figure out exactly what needs to be done, but that will have to wait a few days unfortunately.


    This post was posted in Coffee Roasting and was tagged with Coffee Roasting, Coffee Roaster, Probat, Probat L12 Rebuild

  • Probat L12 Restoration & Modification

    Posted on June 4, 2013 by Venia Coffee Roasters | Keith

    We have just purchased a used Probat L12 coffee roaster and will be going through an extensive rebuild over the next few months. We thought it would be fun to share this process with our customers. It has been in use for 18 years without any major servicing, and the second owner of the last few years obviously didn't stick to any routine cleaning or preventative maintenance schedules. We have ourselves a fun summer project!


    Probat L12 Removal from old location.


    Mechanically, I was prepared for the worst and was pleasantly surprised that she turned right on and all systems seemed to work. The drum rotated smoothly and it sounded great. The fan guard on the motor was dented causing it to clatter.  That was fixed with a screwdriver and a mallet in about 2 minutes.  The gas line had been disconnected so our tests stopped there.

    Probat L12 Backside


    However, it was obvious that general maintenance and cleaning the past few years was not a priority.  The cooling airflow capacity was likely reduced to about half from the build-up of chaff in and below the cooling tray.  Upon taking the cooling tray off,  the shaft that rotates the cooling arm was completely lacking grease. I doubt any of the bearings have been greased in a few years.

    Moving this beast was causing me a few sleepless nights.  I have done a lot of things in life, but moving one of these was not yet one of them.  Many thanks to our friends at Vitae Springs Vineyards, Tilla-Bay Farms, Olson Homes and Oregon Coastal Flowers for helping coordinate the move from Oregon to Washington.


    Probat L12 on the Truck


    My heart skipped a few beats lifting her into the truck, but all went smoothly.  Once we get this delivered to us in Seattle we will give it a more thorough examination.  We already have a laundry list of restoration and modifications we want to accomplish.  I am sure there will be a few surprises along the way too!

    This post was posted in Coffee Roasting and was tagged with Coffee Roaster, Probat, Probat L12 Rebuild

  • Better Business Bureau Accredited | Venia Coffee is Serious About Trust

    Posted on June 7, 2012 by Venia Coffee Roasters | Keith

    If you have done business with us in the past, you know that we are serious about making sure you find a product that suits you and that you are satisfied with your purchase. As an symbol of our commitment to our values of trust and satisfaction, we are now an Accredited Business with the Better Business Bureau (BBB).


    Venia Coffee, Coffee Brewing Devices, Bothell, WA


    We know that we are not the only coffee roaster selling top quality commercial and home coffee makers, espresso machines and grinders out there, but we are striving hard to be one of the best.  We can't promise you that we won't ever make a mistake, but what we can promise you is that if we do, we will do everything in our power to make it right.


    If you ever have any questions about our products or services, we are always Continue Reading

    This post was posted in News and was tagged with Coffee Grinders, BBB, Better Business Bureau, BBB Accredited Business, coffee makers, espresso makers, Coffee Roaster

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