KitchenAid A9 Manual

							9
How the Grind Affects Flavor
The flavor of coffee depends on a
variety of factors, including the
quality, freshness, and roast of the
beans, the purity of the brew water,
the cleanliness of the brewing
equipment, and the brewing
temperature. The fineness and
consistency of the grind is also critical. 
Coffee that is ground too fine for a
particular brewing process – using too
fine of a grind in a drip coffee maker,
for example – will result in the brew
water over-extracting the oils and
aromatic compounds in the coffee,
yielding a brew that is extremely
pungent and bitter.
Conversely, coffee that is too
coarsely ground for a particular
process will result in the under-
extraction of the oils and essences,
resulting in a very thin and weak
flavor. The consistency of the grind is also
an important factor in the flavor of
coffee. If the grounds are uniform,
equal amounts of soluble compounds
will be extracted from each. If the
grounds vary in size, some will be
over-extracted and some will be
under-extracted, leading to extremely
poor quality. 
The Model A-9
®Coffee Mill uses a
pair of stainless steel cutting burrs to
grind coffee with precision. This helps
ensure that your coffee is the best it
can be.  
						

							10
Care and Maintenance
IMPORTANT:
•Make sure the Coffee Mill is switched
“Off” and unplugged before cleaning.
•Do not immerse motor housing 
in water.
•Do not use abrasive cleaners or
scouring pads.
•Never immerse the cutting burrs,
burr-shaft assembly, or face-plate
assembly in water. Keep them dry 
at all times.
Cleaning the Coffee Mill
1. Loosen and scrape leftover grinds
from the grinding spout with the
cleaning tool after each use.
2. Wipe the motor housing and cord
with a clean damp cloth.
3. Dry with a soft cloth.
4. Wash the bean hopper, lid, and
glass in hot soapy water.
5. Dry all parts thoroughly before
attaching them to the Coffee Mill.
NOTE:The bean hopper, bean hopper
lid, and measuring glass are dishwasher
safe, but repeated dishwasher cleaning
may cause the graduated markings on
the measuring glass to fade.Cleaning the Cutting Burrs
If the mill is used frequently, the
cutting burrs need to be cleaned every
few weeks for best performance.
Cleaning enables the burrs to achieve
the most consistent grinds possible.
Without regular cleaning, the mill may
clog, which could cause damage to
the Coffee Mill.
Foreign objects – like pebbles or
twigs – sometimes find their way into
whole bean coffee. These objects may
cause the mill to jam. If this happens,
follow the burr-cleaning procedure to
remove the foreign material.
To clean the removable burrs:
1. Empty the bean hopper and
remove from the base.
2.Locate the removable-burr set screw
on the back of the Coffee Mill.
3. Using a Phillips-head screwdriver,
turn the set screw counter-
clockwise to loosen, and remove. 
						

							To reassemble:
1. After cleaning, align the keyed
burr-shaft assembly with the motor
shaft. Lower the burr-shaft assembly
onto the motor shaft and rotate
until the burr-shaft assembly falls
into place inside the motor housing. 
2. Place the grind-adjustment ring
onto the motor housing. Press and
turn the grind-adjustment ring
clockwise several rotations until the
gear offers complete resistance,
then rotate it counterclockwise
until the selection arrow aligns
with the initial “M” for the
Medium grind selection. 
3. Replace the set screw and tighten
with the Phillips-head screwdriver.
Your Coffee Mill is now ready 
for use.
11
4. Turn the grind-adjustment ring
counterclockwise several complete
rotations, and remove it from the
base.
5. Lift the burr-shaft assembly out of
the motor housing.
6. Using the cleaning tool, clean the
burr mounted on the burr-shaft
assembly and the burr mounted
underneath the grind-adjustment
ring.
NOTE:Never wash the burrs or burr-
shaft assembly in water. Keep them
dry at all times.
Care and Maintenance 
						

							12
4. Attach the replacement burrs to
the burr-shaft assembly and the
grind-adjustment ring with the
burr-mounting screws. Make
certain the cutting surfaces of the
burrs face outward (see the
illustration above), and the burr-
mounting screws are tight.
5. Insert the burr-shaft assembly into
the motor housing and attach the
grind-adjustment ring. For
instructions, see “To reassemble”,
page 11, steps 1-3. Replacing the Cutting Burrs
If the cutting burrs are damaged, or
have reached the end of their life
(usually after grinding 600-800 lbs. of
coffee), they can be easily replaced.
Contact KitchenAid at 
1-800-541-6390to order a set of
replacement burrs.
To replace the burrs:
1. Unplug Coffee Mill.
2. Remove the grind-adjustment ring
and burr-shaft assembly. For
instructions, see “Cleaning the
Cutting Burrs”, pages 10-11, 
steps 1-5.
3. With a Phillips-head screwdriver,
remove the burr from the burr-
shaft assembly by turning the two
burr-mounting screws counter-
clockwise until free.
4. Remove the burr from the grind-
adjustment ring by turning the 
two burr mounting screws counter-
clockwise until free.
Care and Maintenance 
						

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©2005. All rights reserved. (4380dZw205)
FOR THE WAY IT’S MADE.™
®
9707030 Rev. C