HomeRoast Digest


Topic: Rocky ground to a halt - help!! (7 msgs / 191 lines)
1) From: Roy Gordon
[ Please forgive if I posted this several days ago, but I didn't see it 
show up.]
Here I was grinding a 1/2 lb of beans in my Rocky and all of a sudden 
there was a clunking noise from the burr area, as if gears were striking 
each other not unevenly as if not grinding, but only for a couple of 
seconds, then it came to a halt.
Tried again and there was only a small electrical hum.  Did several 
other permutations (different grind settings, waited some periods of 
time, etc.) Sometimes there was just the hum. Sometimes it would 
"awkwardly" grind, clunkingly, for a couple of seconds and then stop.
Any help/ideas most appreciated!
Roy
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2) From: Brian Kamnetz
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3) From: Bob Hazen
That would be my guess.  I'd suggest tearing it down to have a look.
My grinder bit into a stone a few months ago and it was a sneaky one.  It 
was nicely rounded, about the size, shape and color of a coffee bean.  I 
don't know if it picked up the color from being in the roast with the "real 
beans" or what.  I spotted it when I poured the beans back out of the 
grinder because it didn't have a split in it.
Bob

4) From: raymanowen
The Raunchillio Rocky is not a commercial grinder, even with the good burr
set. They thoughtfully include a thermal fuse in the wiring that will open
if the universal motor is run too long at a stretch. If the fuse opens, all
stop and nothing is damaged.
Surprised that the motor hums without turning, and the thermal fuse hasn't
blown yet. The current drawn by a motor with a locked rotor is much higher
the normal run current. Over temperature/ current should blow the protective
fuse, prevent motor burn out.
With the grinder Off, try turning the burr in both directions. If a tooth is
broken, you'll feel it. If you just have a chunk of gravel in the grinding
chamber, hold the grinder upside down, twist the burr and the FOD will fall
out and free the burrs. Here's hoping you don't have a broken tooth! No
dental repair possible, but the bill would be prohibitive.
Think long and hard if the gears are botched- Raunchillio probably sell the
complete gear motor as the smallest repair part. Notice how proud of it they
are, and consider an upgrade closer to a commercial grinder if you normally
grind pound-size coffee batches.
Cheers, Mabuhay -RayO, aka Opa!
-- 
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Mighty
Wichita (ex- NYC Paramount) WurliTzer- 1976
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5) From: Terry McVay (rr)
Roy, you are going to have to get it apart...  Sounds like it may be a stone
or
Something come loose. Gonna need a screwdriver, or a friend with one.  Then
follow
This link:  http://coffeegeek.com/guides/cleanrocky Shows you how to take
down, and reassemble the gears, you should find the problem.. good luck!
Terry/Kona, Hawaii

6) From: Hank Perkins
Just a guess here, were you roasting oily beans?  Try tamping the beans down
in the hopper toward the burrs and see if this helps.  With dark oily roasts
mine does this.
On Sat, Apr 18, 2009 at 5:12 PM, Roy Gordon  wrote:
<Snip>
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7) From: Dean De Crisce
Something like that just recently happened when I was running some
parboiled rice thru the Rocky to clean it. The gears stopped. I turned
the grinder off and on. I got the hum of the motor with no turning
gears. I again turned it off and on without change. So I opened the
burs from 20 to 30, turned it on again and it ran the rest of the rice
thru without incident. I never quite knew what happened. I guessed a
rice piece got stuck until I opened it up.
On 4/18/09, raymanowen  wrote:
<Snip>
-- 
Sent from my mobile device
Dean De Crisce, MD
Special Treatment Unit
8 Production Way
Avenel, NJ 07001
Mobile: 310-980-8715
decrisce.md
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