HomeRoast Digest

Topic: Cleaning the Bunn burs (7 msgs / 201 lines)
1) From: The Scarlet Wombat
I have a Bunn B CG home grinder that I've been using for about three 
years.  I suspect it really needs cleaning, but cannot for the life of me 
figure out how to disassemble it.  It is not the finest of grinders, but 
the gasket sealed receiving hopper that keeps grounds from flying around is 
nice, I admit.  The adjustments are not good and I would never use it for 
espresso, but it suits for a press pot grind.
But, now, I really need to take it apart and clean the burrs.  I do not 
even know if it has flat or conical burrs.  Any help would be definitely 
Thanks and happy roasting,
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2) From: floyd burton
Have one also-this thing is a real PITA to clean.  First remove the clear
plastic grind shield and use a old dish towel to clean the inside of the
hopper.  If you grind oily beans, this will take some effort and maybe you
should wet the towel with a bit of detergent and water to remove the oil.
Then take the allen wrench you got with the beast-it should be located under
the grinder and turn the grinder on it's top and in the center of the
grinder assembly, you will see where to unscrew the "dechaffer" and cutting
burr.  Turn it clockwise.  When you get it apart, clean clean and clean.  I
have had one for 3 years and only cleaned it once.
Replaced with a used commercial Bunn G3.  The Bunn home model while yielding
good grind results, is too slow, loud and hard to clean.  Good luck-a good
grinder if you are patient, hard of hearing and don't mind fiddling around
to clean the beast or like me does not get concerned with a bit of grunge on
your grinder.  Oh unplug it before doing anything-the fingers you shred
maybe your own.

3) From: The Scarlet Wombat
Thanks Floyd, I was able to get it apart and do some cleaning.  The entire 
assembly does not seem to come out, but there was some junk there that 
needed cleaning.  I had long since lost the allen wrench, but fortunately, 
I'm an inveterate tinkerer and have a large toolbox with the right size.
I think I see a used Bunn G3 in my future, I'll be offering the little 
grinder to a good home when I find one.
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4) From: Ed Needham
Hi Dan...
I have one in a box down in the basement.  There is a hex wrench in a little
built in hiding place back near where the electric cord attaches.  Take that
out and use it to remove the bottom burr.  Remove the grinds hopper and you
should feel the hole in the middle of the burr.  A thin piece of sheet metal
covers the actual burr, and I think is designed to act like a little fan to
help with grinds movement.  The hex screw has standard threads and is
removed turning the standard way.  I take the thing outside with a stiff
bristle brush and a can of compressed air, as well as a roll of paper
towels.  Brush, blow and wipe all surfaces.  You can also remove a plastic
guard protector inside the bean hopper to get at the inner parts where the
beans go down to the burrs.
As to the grind adjustment, there is a weird rubber knob "INSIDE' the
hopper.  The knob pulls off and allows you to make the grind finer than the
standard factory setting.  Turn the unit on and adjust the burrs until they
just touch.  It won't hurt the burr.  Then back it off just a bit and put
the knob back on to make this your lower limit.  It's still not enough to
grind a good espresso grind, whish really disappointed me since the box said
it would do an espresso grind, and it cost a hundred dollars.
I think it is very poorly designed and difficult to clean.  It does a so-so
job of grinding, but is very loud.  The burrs are sort of a hybrid design,
different than standard flat burrs.  I liked the counter appearance and I
really liked the coffee hopper.  It overcame the typical problem of grinds
going everywhere and escaping the grinds hopper as in the cheaper grinders.
I'll probably sell mine at a yard sale this spring.
Ed Needham

5) From: floyd burton
I am hanging on to mine and using it as a loaner for friends to use before
they buy a decent grinder and hopefully start roasting.  Gotta spread the

6) From: The Scarlet Wombat
Thanks Ed, I did find the allen wrench after some searching.  The burr on 
the bottom comes off fine and I cleaned it.  However, the plastic cover to 
the mechanism inside, the slanted one, will not budge.  I cannot figure out 
how to remove it.
I admit to finding the unit a pain in the hinder parts, with the exception, 
as you noted, o the gasket sealed hopper, which keeps the counter clean and 
me out of trouble. [grin]  I still want a grinder that has easier 
adjustments and produces less dust.  I'm beginning to search the used 
restaurant supply places for a G1 or G3.  Maybe just giving in and geting a 
Rocky is the thing, but I suspect I need two grinders, one for press pot 
and one for espresso, as returning to any given adjustment is pretty hard 
when you can't see it, counting clicks when the unit is running is iffy.
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7) From: Ed Needham
The plastic guard is held on by tabs that allow the whole thing to slide
straight up.  You've got to wiggle it to get it to move, and if it gets
crooked, it has a tendency to bind.  Pull up with most of the force near
where it attaches to the grinder.  Wiggle side to side as you pull up and
also wiggle front to back (no, silly, wiggle the plastic piece!)
I don't have a Solis Maestro, but it seems to be getting rave reviews as a
home grinder.  $130 bucks isn't bad either.
Ed Needham

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