Ratio Eight User manual

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RATIOCOFFEE.COM

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The Eight was designed
to make your coee brewing routine
something you look forward to.

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01 Important Safeguards
02 Detailed Instructions
03 The Brewing Phases
04 Troubleshooting
05 Cleaning
06 Maintenance
07 5-Year Limited Warranty
08 Disclaimer and Limitation of Liability
CONTENTS

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When using electrical appliances, basic safety precautions should always be followed to prevent the risk of
fire, electric shock, burns, or other injuries and damages.
READ ALL OPERATING AND SAFETY INSTRUCTIONS CAREFULLY.
• Do not touch hot surfaces. The top of the unit will get hot when brewing. Use the side arms of the
machine to move the unit.
• To protect against fire, electrical shock, and injury, do not immerse cord, plug, or appliance in liquid.
• Unplug from outlet when not in use, and before cleaning. Allow it to cool before putting on, or taking
o parts and before cleaning the appliance.
• Machine must be turned o before unplugging from the outlet.
• The voltage in your home should correspond to the voltage indicated on the bottom of your appliance.
• Close supervision is necessary when any appliance is used by or near children.
• Do not operate appliance with a damaged cord or plug.
• Do not operate appliance after the appliance malfunctions, or has been dropped or damaged in any
manner.
• If the unit is damaged or dropped, return to Ratio for service.
01 IMPORTANT SAFEGUARDS

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• The use of accessory attachments not recommended by Ratio may result in fire, electric shock or injury.
• Do not use outdoors or in a damp area. Do not place the appliance on a hot surface.
• Do not let the cord hang over the edge of a table or counter, or touch hot surfaces.
• Do not place on or near a hot gas burner, electric burner, or in a heated oven.
• To disconnect the appliance, remove plug from electrical wall outlet. When the carafe is removed from
the base of the unit, the heating element cannot be turned on.
• Do not use this appliance for anything other than its intended use.
• Place the appliance on a level surface.
• Do not operate the appliance without water.
• Do not use hot water. Only fresh, cold water should be used to fill the water tank.
• Do not use a cracked carafe, or a carafe with a loose or weakened handle.
• Do not clean any part of the machine or carafe with harsh detergents, steel wool pads or other
abrasive materials.
• Do not place the carafe in the dishwasher. Hand wash only.
• The carafe is designed for use with this appliance. It must never be used on a range or stove top.
• Do not hit the showerhead with the carafe, as it may damage the carafe.
01 IMPORTANT SAFEGUARDS

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• A short power supply cord is provided to reduce the risk resulting from becoming entangled in or
tripping over a longer cord.
• Extension cords are available and may be used if care is exercised in their use.
• If an extension cord is used, (1) the marked electrical rating of the extension cord should be at least
as great as electrical rating of the appliance, and (2) the longer cord should be arranged so that it
will not drape over the counter or table top where it could be pulled on by children or tripped over
unintentionally.
01 IMPORTANT SAFEGUARDS

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SAVE THESE INSTRUCTIONS.
YOU MIGHT NEED THEM.

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Fill the tank.
Fill to desired level with fresh, cool water. If using Ratio carafe to transfer water, ensure it is free of coee
residue from previous brews.
Choose your filter.
The Ratio carafe was designed to use Chemex paper filters or our custom perforated stainless steel filter,
the Ratio Kone.
Add coee grounds.
Add freshly ground coee to the filter. We recommend starting with 14 level tablespoons, or 70 grams for a
full batch. For a half batch, add 7 level tablespoons, or 35 grams. When placing the carafe back in the Ratio
Eight, make sure you tilt the carafe so that you do not hit the showerhead.
Begin the brewing cycle by pushing the start button.
You can preheat the carafe with hot water from your sink, a kettle, or by running a brew cycle of any size without coee.
Alternately, you can fill the tank beyond your intended batch size and stop the brew cycle when the tank reaches the
desired level by touching the button. If you run more than intended, just top o the tank as needed.
02 DETAILED INSTRUCTIONS

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02 DETAILED INSTRUCTIONS

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Cups/Tank Marking Water (oz/g) Grams of Coee Tablespoons of Coee (approx)
3 17/500 26 5
4 22/650 35 7
5 27/800 44 9
6 33/975 53 11
7 38/1125 61 12
8 44/1300 70 14
Suggested brew ratios of water to ground coee
02 DETAILED INSTRUCTIONS

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Able Kone Chemex Paper Filter
Replacement filters available at ratiocoee.com
02 DETAILED INSTRUCTIONS

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Bloom
The Ratio Eight will deliver a small amount of water to pre-saturate the grounds in preparation for the full
brewing cycle. The water distributed then allows the fresh-roasted coee to breathe and the coee will
begin to “Bloom.” The coee will bubble slightly signaling it is ready for the next phase.
Brew
After a few moments, the Ratio Eight will switch from “Bloom” to “Brew”, and the hot water will again be
delivered from the shower head. Depending on the amount of water you add to the tank, the brewing time
will take between 4 and 7 minutes, including bloom rest period and final draining of coee grounds. The
Ratio Eight optimizes the amount of “Bloom” and “Brew” time, while the powerful heating element will keep
the water temperature between 195ºF/90ºC and 205ºF/96ºC. If the tank is empty, the heating element will
turn o.
Ready
Your brew cycle will complete when the “Ready” indicator is on. The water may continue to drip through the
grounds for the next 10-40 seconds depending on the grind.
03 THE BREWING PHASES

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Remove the carafe from the base of the unit, and then remove the filter with the spent coee grounds
inside. The Ratio Eight will turn itself o automatically after the carafe has been removed. If you do not
remove the carafe the “Ready” light will blink for 20 minutes. You can discard or compost the coee
grounds.
03 THE BREWING PHASES
Bloom Brew Ready

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What’s Wrong? Indicator Status Potential Problem Try This
Machine will not
turn on or brew.
No lights The power supply
is interrupted.
Make sure machine is correctly
plugged into a working outlet.
All three lights are
blinking slowly.
The carafe is not in place, or
not centered on base.
Place the carafe in the
machine under the
shower head.
There is not enough water
in the tank.
Add at least 15oz/450g of cold
water to the tank.
Coee brewing time
takes longer than
7 minutes.
Normal
There may be mineral
(scale) build-up in the
machine that is preventing
normal operation.
Descale your machine and
carafe with the Ratio Machine
Wash (see section 05
for details).
Water dripping out of
shower head slowly.
Glass tube, tank, and
carafe are cloudy.
04 TROUBLESHOOTING

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What’s Wrong? Indicator Status Potential Problem Try This
Brew basket overflows. Normal
Too much coee or the
grind is too fine.
For a full batch, start with 70g
of coee. The Eight uses a
coarser grind than standard
drip machines. Grind should
resemble raw sugar.
Using two or more paper filters,
or a permanent filter together
with a paper filter.
Use one Chemex paper filter
or the Able Kone for Ratio.
Coee tastes bitter. Normal Too much coee or the
grind is too fine. See suggested brew ratio
chart. Texture of ground coee
should resemble raw sugar.
Coee tastes weak. Normal Too little coee or the grind
is too coarse.
Coee does not bloom. Normal Coee is stale. Use coee within 2-3 weeks
of roast date.
Still need help? Contact help@ratiocoee.com
04 TROUBLESHOOTING

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To keep the Ratio Eight looking and performing its best, we recommend a regular routine of cleaning the
machine with the Ratio Machine Wash. This is an all-natural detergent and descaler that will keep the tank,
supply lines, and carafe clean and free of mineral build-up. Depending on the water quality in your area, you
may want to use the wash as often as every other week. Most public water sources will lend to a monthly
washing cycle.
You may use other cleaning and descaling products, but be sure that they are intended for home coee
machines. Commercial cleaning products, or those not designed for coee machines, could damage your
Ratio Eight and might invalidate the warranty.
Upon the completion of the brew cycle there may be some condensation build-up on the front of the
machine. This can be easily removed by wiping down machine with a lint free cotton or microfiber towel.
Please use caution, as the water vapor and shower head may still be hot. If left on the surface, this
condensation should evaporate within a few minutes, but depending on the mineral content of your water,
over time spots may appear on the surface of the machine. Use the Ratio Machine Wash to remove any hard
water spots on your machine.
05 CLEANING

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1. Add half a bottle of liquid to carafe, then add about 40oz/1150g of warm, not hot, water to dilute.
2. Pour into the Ratio water tank. Top up with more water to the fill line.
3. Brew one complete cycle.
4. Rinse all components. Repeat brew cycle three times with clean water.
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. After contact
with skin, wash immediately with plenty of water. If swallowed, seek medical advice immediately and show
the container or label.
05 CLEANING

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Glass care
The Ratio carafe is made of borosilicate glass, similar to laboratory glass. After each brew, rinse the carafe
in warm tap water, using a drop of dish soap if you’d like. As a reminder, do not put the carafe in the
dishwasher or microwave.
Wood care
The hardwood on the Ratio Eight is sealed with varnish that is formulated to handle extreme marine
environments. Over time, the wood will develop a patina. To refresh the finish, use a clean towel to apply a
natural oil intended for wood surfaces, such as butcher block oil. After 1-2 minutes, use another clean towel
to bu the finish and remove excess oil. If you prefer a matte finish, use an ultra fine steel wool (such as
0000 grit) to remove any gloss.
Metal care
Use a microfiber towel to wipe up water from the surface of the machine. Most coee stains can be
removed with a moistened towel. You may use diluted Ratio Machine Wash on the metal parts to remove
coee stains. Do not use an abrasive brush or scrub pad on the machine as it can scratch the surface.
06 MAINTENANCE

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We proudly oer this Limited Warranty for the Ratio Eight coee machine in the USA.
What This Warranty Covers
Ratio LLC warrants the Ratio Eight coee machine for 5 years from the date of original purchase against
defects in material and workmanship. If during this period, your Ratio Eight coee machine is determined to
be defective following our inspection, we will repair or replace your coee machine at our sole discretion.
These are the exclusive and sole remedies available under this Warranty.
Warranty Exclusions
Our warranty does not apply to any product failure arising from:
• Mineral build-up in tank and supply lines (failure to “descale”)
• Use of improper or unregulated voltage or power supply
• Abuse or misuse (including accidental damage to unit or glass parts)
• Improper or incorrectly performed maintenance or repairs
• Normal wear and tear
• Commercial use
For warranty terms and service outside the USA, please visit ratiocoee.com/warranty
07 5-YEAR LIMITED WARRANTY

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How To Get Warranty Service
• If your Ratio Eight coee machine needs service, please contact us at help@ratiocoee.com or call us
at 800.261.9640. Our team will arrange the inspection of your machine at our service center.
• You may be asked to register your Ratio Eight coee machine with proof of purchase and serial
number on the warranty & returns section of our website before we issue warranty service. Without
proof of purchase, your warranty period will run from the date of our first sale of the coee machine in
our records.
• Do not ship your coee machine to us without a return authorization. You are responsible for shipping
charges. Returned coee machines must be shipped in proper packaging, with insurance for loss or
damage, as we are not responsible for products lost or damaged in shipment.
• Once we receive your coee machine, and determine that the unit is covered by warranty, we will
repair or replace your coee machine at our discretion. If we determine that your unit only requires
cleaning, or requires repairs under Warranty Exclusions, we will contact you and oer service for a fixed
charge, or return your unit without repair. In this case you are responsible for all return shipping charges.
• Replaced or repaired units will be subject to the same 5-year warranty period dating back to the
purchase date of the original product.
For warranty service outside the USA, please visit ratiocoee.com/warranty
07 5-YEAR LIMITED WARRANTY