MANUAL
MLR010019N | MLR010554N | MLR010555N | MLR010556N
WITH POWERFUL
GRINDING CAPACITY
electric
coffee grinder
2 | IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY
INSTRUCTIONS
When using electrical appliances, basic safety
precautions should always be followed to reduce the
risk of fire, electric shock, and/or injury to persons.
– Read all instructions thoroughly before use.
– Do not use the appliance for anything other than
its intended use.
– This appliance is only to be used indoors.
– Check Grinding Hopper for presence of foreign
objects before using.
– Avoid contacting moving parts. Do not remove the
transparent window Lid while the grinder blades are
in motion.
– During grinding, if the coffee stops spinning, shake
the Grinder while holding the Lid closed.
– Inspect blade and blade assembly before and after
use. If damaged, do not use and contact Manufacturer
orauthorized repair facility for assistance.
– Do not grind more than 2.12 oz (60 g) of coffee. Before
grinding the next batch of coffee, wait 30 minutes to
cool down the mill.
– The applicable voltage is AC 120 V, 60 Hz. For safety
reasons, it is not appropriate to connect multiple
devices to one power outlet.
– Never leave the product connected to the power
source without supervision. Even when use is
interrupted for a short time, or when it is left
unattended, remove plug from outlet. To unplug,
grasp the plug and pull from the outlet. Never pull
from the Power Cord.
– Always disconnect the appliance from the power supply
before assembling, disassembling, or cleaning it.
Do not immerse the unit in water. To protect
against electrical shock, do not put any parts
in water or other liquid.
CAUTION!
IMPORTANT SAFETY INSTUCTIONS | 3
– Inspect the power cable before each use. Never use
the product with a damaged power cable or if it was
dropped or damaged in any other way or if it does
not work properly. Do not try to repair the defective
product yourself because it can lead to electric
shock. Any repair that was done incorrectly can
cause hazardous situations for the user.
– If the power cable or plug is damaged, the product
should be returned to the manufacturer, its service
agents, or similarly qualified persons.
– This appliance has a polarized plug (one blade is
wider than the other). To reduce the risk of electric
shock, this plug should fit in a polarized outlet
only one way. If the plug does not fully fit in the
outlet, reverse the plug. If it still does not fit, contact
aqualified electrician. Do not modify the plug in
any way. Do not let cord hang over edge of table or
counter or touch hot surfaces.
– To provide additional protection, it is recommended
to install Residual Current Device (RCD) in the power
circuit, with residual current rating not more than
30mA. Contact a professional electrician in this
matter.
– Never expose the product to direct sunlight or rain,
etc. Never use the product in humid conditions.
– Never put the product on or close to the hot or
warm surfaces or the kitchen appliances like the
electric oven or gas burner. Never use the product
close to combustibles.
– Do not wash the body of the Grinder under running
water or immerse it in water.
– Do not operate the Grinder with an empty Grinding
Hopper or tank. Add coffee beans before use. Do not
overfill the Grinding Hopper or tank.
– This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge unless they have been given supervision
and instruction concerning use of the appliance by
aperson responsible for their safety.
SAVE THESE INSTRUCTIONS
4 | OVERVIEW OF PARTS
OVERVIEW OF PARTS
Grinder Housing
with Motor
ON/OFF
Switch
Stainless Steel
Grinding Hopper
Stainless Steel
Wing-Blade
Power Cord
and Plug
Transparent Lid
BEFORE FIRST USE
– Wipe the Grinding Hopper, Wing-Blade,
and Lid with adamp cloth.
– Parts must be completely dry before using.
– Before connecting the product to the power supply,
check that the power supply voltage and current rating
corresponds with the power supply details shown
on the product rating label.
EASY STEPS | 5
Plug in
then
remove
the Lid.
Put coffee
beans inside the
Grinding Hopper.
Do not fill above
the rim.
NOTE: Grinder
capacity: up to
2.12 oz (60 g).
Close
the Lid.
Unplug. Next, invert the Grinder
and gently tap grounds into the
Lid. Carefully remove the Lid
(with Grinder still upside down).
Pour the ground powder from
the Lid into your coffee filter.
Do not operate the
appliance for more than
20 seconds at a time.Let
the appliance cool down
for 30 minutes before
resuming operation.
CAUTION!
STEP 1 STEP 2
STEP 3
STEP 5
To operate, press and hold the
On/Off button for up to 20
seconds. Release when done.
STEP 4
NOTE: Change
grinding time to
adjust grounds
(coarse to fine). See
next page for more.
NOTE: You can
stop grinding any
time by releasing
pressure on the
On/Off button.
EASY STEPS
20
SEC
30
MIN
6 | COFFEE bEST PRACTICES | GRINDING SUGGESTIONS
COFFEE BEST PRACTICES
GRINDING SUGGESTIONS
Fine Ground
Espresso Machine &
Turkish Coffee
20 Seconds
Medium Grind
Automatic Drip Coffee
10–15 Seconds
Coarse Grind
French Press & Percolator
8–10 Seconds
Bean Quantity
Ground Coffee
(Tablespoons)
Yields
(5 oz cup)
1.5 scoops 3 tbsp (1.5 oz) 2 cups
2.5 scoops 5 tbsp (2.5 oz) 4 cups
3 scoops 6 tbsp (3 oz) 6 cups
4 scoops 8 tbsp (4 oz) 8 cups
5 scoops 10 tbsp (5 oz) 10 cups
5.5 scoops 11 tbsp (5.5 oz) 12 cups
NOTE: This Grinder grinds up to 2.12 oz (60 g) coffee
beans. Avoid putting the coffee bean exceeding the level
of the bowl top edge, overfilling could cause grinding
powder uneven. We recommend unplugging the grinder
when not in use.
NOTE: Use less grind time for smaller batches of
coffee beans.
– Grinding fresh coffee beans right before brewing will
produce the best flavor.
– We do not recommend reusing coffee grounds.
– Pre-ground beans will keep their aroma for about 7–8
days. Coffee sealed in a cool place may retain its aroma
longer. Do not store ground coffee in fridge or freezer.
– Adjust the grind times according to your coffee brew type
using the chart below. Experiment with grind size to suit
your personal preference. Smaller batches of beans will
use less grind time.
CLEANING AND MAINTENANCE | WARRANTY | TECHNICAL DATA | 7
CLEANING AND MAINTENANCE
– Always unplug the unit before cleaning.
– Remove all coffee grounds after each use.
The Grinding Hopper and Wing-Blade should
be cleaned with a small brush.
– The Transparent Lid can be washed by hand with mild
soap and water; do not clean it in the dishwasher.
– DO NOT IMMERSE IN WATER.
– Wipe the Grinder Housing with a damp cloth only.
– Do not try to oil or sharpen the blades.
1-YEAR LIMITED WARRANTY
This product is warranted to be free from defects in material
and workmanship under normal use and service for one
year from the date of the original purchase with the receipt.
The manufacturer’s obligation shall be limited to repairing
or replacing any part of the product that is defective.
Such warranty shall not apply to damages resulting from
accidents, abuse, or misuse.
Model 550K Max. Capacity 2.12 oz (60 g)
Voltage AC 120 V Max. Operating Time
Frequency 60 Hz
20 seconds per cycle. 30 minutes
cool down period between cycles.
Power 130 W
TECHNICAL DATA
muellerdirect.com
support@muellerdirect.com
888-632-9981
If there is any problem with
Mueller Electric Coffee
Grinder, please contact
Customer Service.
37 E 18TH STREET
NEW YORK, NY 10003
UNITED STATES
MUELLERDIRECT.COM
SUPPORT@MUELLERDIRECT.COM
888-632-9981
SKU:
MLR010019N
MLR010554N
MLR010555N
MLR010556N
MADE IN CHINA
happiness is homemade
WITH POWERFUL GRINDING CAPACITY
electric coffee grinder
