MOCCAMASTER KM5 Coffee Grinder User Guide
- October 30, 2023
- MOCCAMASTER
Table of Contents
KM5 Coffee Grinder
User Guide
KM5 Coffee Grinder
Warranty
5-Year Limited Warranty
The Science Behind the Perfect Cup of Coffee
Welcome, and thank you for your purchase!
Gerard Clement Smit
Founder and Designer
When Technivorm founder Gerard Clement Smit debuted his coffee grinder in
1965, it was revolutionary – the first coffee grinder designed for home use.
The Macmaster KM5 Burr Coffee Grinder continues this legacy of industry-
leading quality. Its precision engineering allows you to grind your preferred
coffee beans to an exact, uniform size.
And when combined with Moccamaster coffee brewers’ optimal temperature and
brewing time, these perfectly crafted grinds burst with flavor and freshness,
for the real taste of coffee.
Now you can taste the entire journey of your coffee from origin to roaster to
extraction — by starting with the perfect grind.
The Macmaster Difference
| Recyclable, Repairable, Sustainable, Cleanable
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| Industry-Leading 5-Year Warranty
| Handmade
in the Netherlands Since 1964
Industry Certified for Optimal Performance
The KM5 Macmaster coffee grinder is certified to grind to the strict standards
of the European Coffee Brewing Center (ECBC); a certification awarded only
after extensive and rigorous quality control and laboratory testing.
This Macmaster Grinder, excluding removable parts, is warrantied by Macmaster
USA to be free from defects in materials and workmanship existing at the time
of manufacture and appearing within one of the following warranty periods:
Five (5) years from the date of purchase of a NEW GRINDER. One (1) year from
the date of purchase of a REFURBISHED GRINDER.
If Macmaster USA inspects the grinder and finds it to be defective, it will be
repaired or replaced without charge to you. If a replacement product is
provided, it will assume the remaining warranty of the original product, as
described above.
This warranty does not apply to any defect arising from a buyer or user’s
misuse of the product, including negligent handling, failure to follow
manufacturer’s instructions, modification, alteration, or repair not
authorized by Macmaster
USA. If you choose to have someone other than an authorized service center
service your grinder, THIS WARRANTY WILL AUTOMATICALLY BECOME NULL AND VOID.
Any liability is expressly limited to an amount equal to the purchase price
paid, and all claims for special, incidental, or consequential damages are
hereby excluded.
Unless otherwise specified, Macmaster USA makes no other warranty of any kind,
expressed or implied, as to the merchantability or fitness of any product for
any particular purpose. Macmaster
USA expressly disclaims all warranties and conditions not stated in the
limited warranty.
Macmaster USA is not liable for any claim made by a third party or made by a
buyer or user for a third party.
This warranty gives you specific legal rights, and you may also have other
legal rights, which vary from state to state. Some states do not allow the
limitation or exclusion of incidental or consequential damages, so the above
limitation or exclusion may not apply to you.
If you believe your grinder is defective, return it to the location of
purchase (within first 30 days) or contact Macmaster USA Consumer Relations
at [email protected], or 855.662.2200.
KEEP ORIGINAL SALES RECEIPT OR INVOICE AS PROOF OF PURCHASE FOR WARRANTY
PURPOSES.
For out-of-warranty product repair services visit
moccamaster.com
Did you know that a “perfect cup of coffee” is a quantifiable metric?
When awarding their Seal of Approval, the European Coffee Brewing Centre
(ECBC) uses science-backed guidelines to evaluate how coffee grinders and
brewers perform across the following benchmarks:
COFFEE GRINDING
| GRINDING TEMPERATURE
Coffee is not heated during grinding
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| GRIND QUALITY
Each ground particulate is consistent in size
| GRIND UNIFORMITY
The grinder reproduces the exact same results grind after grind
| FORMULA
Coffee to water ratio: 2 TBSP to 6 oz.
COFFEE BREWING
| BREWING TEMPERATURE
Brews at 196°F – 205°F
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| BREWING TIME
Full carafe in 4-6 minutes
| TURBULENCE OF THE GROUNDS
Perfect coffee bloom and even extraction
| TOTAL DISSOLVED SOLIDS
Coffee solubles between 18%-22%
Moccamaster grinders and brewers hit these benchmarks every time, consistently
producing delicious coffee over a lifetime of use.
To learn more about ECBC certification, visit ecbc.no.
Do Not Return to Store!
FOR IMMEDIATE ASSISTANCE WITH ASSEMBLY, USE, OR TROUBLESHOOTING PLEASE CONTACT
US!
WARRANTY REGISTRATION
To register your grinder, please visit the following URL:
MOCCAMASTER.COM/PAGES/REGISTER
S 99999999
PR 99999999
To register your product and request repairs, please have your Art.no. and
Serial Number (S/N) ready for Consumer Relations. This information is found on
the base plate of the grinder and will look like the sample image to the left.
HOW TO CONTACT US
Email [email protected]
Phone 855.662.2200
Find Help Online
support.moccamaster.com
Business Hours
Monday – Friday, 8AM-5PM CST
We look forward to hearing from you!
IMPORTANT SAFEGUARDS
When using electrical appliances, basic safety precautions should always be
followed including the following:
READ ALL INSTRUCTIONS
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The appliance is intended for indoor use in households and similar applications such as:
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staff kitchen areas in shops, offices, and other working environments
• farmhouses
• clients in hotels, motels, and other residential-type environments
• bed & breakfast-type environments -
Unwrap the coffee grinder with care. Remove all packaging materials. Keep plastic and cardboard packaging out of reach of children.
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Confirm the voltage of the grinder matches your main voltage. The grinder must be plugged into a socket with safety grounding.
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Place the grinder on a flat surface in a frost-free room.
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To protect against risk of electrical shock do not put cord, plugs or coffee grinder in water or other liquid.
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This appliance can be used by persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.
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Close supervision is necessary when any appliance is used by or near children. Children should be supervised to ensure they do not play with the appliance.
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Turn the appliance OFF, then unplug from the outlet when not in use, before assembling or disassembling parts and before cleaning. To unplug, grasp the plug and pull from the outlet. Never pull from the power cord.
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Do not operate any appliance with a damaged cord or plug or after the appliance malfunctions, or is dropped or damaged in any manner. Contact the manufacturer at their customer service telephone number for information on examination, repair or adjustment.
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Avoid contacting moving parts.
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Do not use outdoors.
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Do not let cord hang over edge of table or counter.
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Do not place on or near a hot gas or electric burner or in a heated oven.
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The use of attachments not recommended or sold by the manufacturer may cause fire, electric shock or injury.
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To disconnect, ensure power switch is in “OFF” position, then remove plug from wall outlet.
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Do not use grinder for any purpose other than its intended use.
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lways place all lids in the correct position, as shown in the descriptive images in this manual.
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NOT DISHWASHER SAFE.
ENVIRONMENTAL RECOMMENDATIONS
Dispose of filters and coffee grounds in an organic waste container or compost
heap where available. If not available, filters and grounds may be disposed of
in normal household waste. Please recycle all packaging and parts responsibly.
MOTOR OPERATION AND REST ALLOWANCE
A maximum of 225 grams or 8 ounces of coffee beans may be placed into the bean
hopper. For proper use, operate this appliance for less than 90 seconds per
time with a minimum of 90 seconds of rest time maintained between two
continuous cycles. The grinder can not work for 6 minutes continuously within
10 minutes, and it must rest for 30 minutes if the working time exceeds 6
minutes.
GLASS GROUNDS CONTAINER CAPACITY
To ensure correct operation, avoid filling the glass grounds container past
the top marker as indicated below. Overfilling the glass grounds container can
clog the dispensing spout and cause the motor to jam.
Product Overview
The KM5 McMaster Grinder
Grinder Identification Key
A. Bean Hopper Lid
B. Bean Hopper
C. Power Plug
D. Power Switch
E. Glass Grounds Container
F. Glass Grounds Container Lid
G. Glass Grounds Container Storage Lid
H. Dispensing Spout
I. Grind Setting Indicator
J. Grind Setting Adjustment Knob
Cleaning Your Grinder
Basic Cleaning
Make sure to unplug the grinder before cleaning. Wipe the inside surfaces of
the bean hopper with a moist cloth at least once a week to avoid a buildup of
the coffee oils, which can cause discoloration. When needed, you may also
clean the exterior surfaces with a moist cloth, wiping dry. Do not use any
cleaning agents to clean the interior or exterior of the coffee grinder. Do
not wash any grinder parts in the dishwasher. Do NOT use rice to clean your
grinder.
Maintenance Cleaning
We recommend cleaning the inside of your grinder every 3-6 months, depending
on how frequently you grind coffee and the type of coffee you’re using. Darker
roasts are typically oilier and tend to stick to the inside of the grinder
more easily. If you do not clean your grinder regularly, you may find that it
negatively impacts the flavor of your ground coffee. The inside of your
grinder can either be cleaned manually or automatically by using a dedicated
coffee grinder cleaning product.
Manual Cleaning
Refer to our Burr Replacement instructions on our website to learn how to
disassemble your grinder. For best results, use a soft brush and a vacuum
cleaner to clean the grinding chamber.
Automatic Cleaning
A grinder cleaning product will remove coffee oils and particles stuck inside
the grinder without disassembly. Purchase a grinder cleaner product from your
preferred retailer such as Biocaf Coffee Grinder Cleaning Tablets by Urnex.
The product you choose should be suitable for burr grinders. To use, follow
the manufacturer’s directions on the packaging.
FIND MORE ONLINE
To learn more about your grinder, including how to replace your burrs and dial
in your grind setting, scan the QR code to the right or visit us at
www.moccamaster.com.
https://us.moccamaster.com/pages/moccamaster- KM5-grinder-101
Use Fresh Beans
The fresher the grind, the better. We recommend grinding your coffee beans
right before you brew, and grinding just the amount you need. If you do grind
more, you can store the grounds in your grinder’s glass grounds container with
storage lid.
Grind Size
How coarse you’ll need to grind your beans depends on your brewing method;
when brewing on a Macmaster, you’ll want your beans ground to medium-coarse.
See our chart below for a range of brewing methods.
Dial In Your Grind
Coffee grounds that are too fine can produce an over extracted cup of coffee.
Too coarse, and your coffee may be weak or flavorless. Use our chart below as
a starting point, but experiment with small adjustments to find the grind
that’s perfect for your palate.
Keep it Clean
If you don’t use your grinder daily, you may want to clear out old grounds
before grinding a fresh batch. Pre-grind a small amount of coffee first and
discard.
Water
If it tastes good to drink, it will make good coffee. We recommend fresh tap,
filtered, or bottled water. We do not recommend using reverse osmosis filtered
water or distilled water, as it can damage the brewer’s boiling element and
lacks minerals necessary for making great coffee.
What’s in the Cup
The coffee-to-water ratio we recommend is the approved industry standard, but
your taste preferences may vary. If your coffee is too strong, add hot water
to your finished cup. If it’s too weak, DO NOT add more coffee – instead, try
a different coffee roast or growing region.
REPLACEMENT PARTS
Replacement parts are available through many retailers, online at
www.moccamaster.com, or through Consumer
Relations at 855.662.2200.
Adjusting Your Grind Settings
Grind Setting Details
The adjustment knob on the KM5 Coffee Grinder allows you to produce coffee
grounds that range from fine (1) to coarse (9). When grinding for a Macmaster
coffee brewer, we recommend starting at the ECB approved setting of 5. We
suggest not grinding below 5 for your Macmaster as a finer grind size may
negatively affect the flavor of your brew and the performance of your
machine.
The Importance of Grind Size
Your grind size and your water-to-coffee ratio are the first steps to perfect
coffee. To find your ideal grind, make minor adjustments to the grind setting
and taste how it changes the flavor of your coffee. Your grind size will
affect your final extraction – the amount of coffee solubles in your cup.
Learn more about how to dial in your perfect grind online at
www.moccamaster.com.
Recommended
Coffee-to-Water Ratio
The industry standard for optimal flavor is 2 tbsp. of ground coffee to every
6 oz. of water – or 55 grams of ground coffee per liter. Getting Started
For first use, set the adjustment knob to 5. On subsequent use, always
activate the power switch before adjusting the grind setting. This allows the
burrs to clear any partially ground beans that may be present from previous
use. If bean remnants are trapped in the burrs, adjusting the grind setting
without activating the grinder may cause the motor to jam. Step 1.
Activate the grinder by holding the Power Switch (D).
Step 2.
With the grinder running, adjust the grind setting by rotating the
Adjustment Knob (J) clockwise or counterclockwise.
- Turning the knob clockwise will produce a finer grind.
- Turning the knob counterclockwise will produce a coarser grind.
• For more information about grinder use and functionality, see the Important Safeguards section in this manual.
KM5 Grinding Guide
Step 1.
Place Glass Grounds Container Lid (F) in position. Place Glass Grounds
Container (E) underneath the Dispensing Spout (H).
Fill Hopper (B) with coffee beans – up to a maximum of 225 grams or 8 ounces.
Place Hopper Lid (A) on top of the hopper. Step 2.
Insert Power Plug (C) into a grounded outlet. Press and hold the Power Switch
(D) until you have ground the desired amount of coffee.
Note: Do not fill the glass grounds container past the top marked line
(approx. 110 grams). Allowing the container to overflow may result in jamming
the grinder motor. Step 3.
Remove the Glass Grounds Container from underneath the Dispensing Spout and
remove the Lid. Step 4.
Measure or weigh your grounds and transfer to your prepared brew basket or
coffee brewer. If you have leftover grounds, seal the grounds container with
Storage Lid (G).
You’re ready to brew great coffee!
References
- ECBC
- Moccamaster USA: Premium Pour-Over Coffee Brewers
- Moccamaster USA: Premium Pour-Over Coffee Brewers