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Ratio Six Series Coffee Machine User Manual

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Ratio Six Series Coffee Machine

Ratio Six Series Coffee Machine product image

IMPORTANT SAFEGUARDS

When using electrical appliances, basic safety precautions should always be followed to prevent the risk of fire, electric shock, burns, or other injuries and damage.

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 the cord, plug, or appliance in liquid.
  • Unplug from the outlet when not in use, and before cleaning. Allow it to cool before putting on or taking off parts and before cleaning the appliance.
  • The machine must be turned off 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 the appliance with a damaged cord or plug.
  • Do not operate the appliance if it malfunctions, has been dropped, or has been damaged in any manner.
  • If you did not purchase your machine directly from Ratio in the USA, please reach out first to the business where you purchased your coffee maker.
  • 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 the plug from the 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.
  • 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 the 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.

SAVE THESE INSTRUCTIONS.
YOU MIGHT NEED THEM.

DETAILED INSTRUCTIONS

  • Fill the tank.
    Fill to the desired level with fresh, cool water. If using the Ratio carafe to transfer water, ensure it is free of coffee residue from previous brews.
  • Choose your filter.
    The Ratio Six thermal carafe was designed to use either a flat-bottom basket filter or a #4 paper filter, depending on the region.
  • Add coffee grounds.
    Add freshly ground coffee to the filter. We recommend starting with 14 level tablespoons, or 70 grams, for a full batch. For a half batch, add 8 level tablespoons, or 40 grams. When placing the carafe back in the Ratio Six, make sure you tilt the carafe and/or brew basket so that you do not hit the shower head.
  • 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 coffee. Alternatively, 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 off the tank as needed.

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Suggested brew ratios of water to ground coffee

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Replacement filters available at ratiocoffee.com

THE BREWING PHASES

  • Bloom
    The Ratio Six 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 coffee to breathe, and the coffee will begin to “Bloom.” The coffee will bubble slightly signaling it is ready for the next phase.
  • Brew
    After a few moments, the Ratio Six 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 5 and 7.5 minutes, including bloom rest period and final draining of coffee grounds. The Ratio Six delivers enough water during the bloom phase to fully saturate the grounds bed for optimal extraction at any brew volume. For a full batch, this is roughly 5 ounces / 140ml of water. 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 off.
  • 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.

Ratio Six Series Coffee Machine 4

Remove the carafe from the base of the unit, and then remove the filter with the spent coffee grounds inside. The Ratio Six will turn itself off 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 coffee grounds.

TROUBLESHOOTING

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Still need help? Contact [email protected]

CLEANING

To keep the Ratio Six looking and performing its best, we recommend a 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 allow for a monthly washing cycle. You may use other cleaning and descaling products, but be sure that they are intended for home coffee machines. Commercial cleaning products, or those not designed for coffee machines, could damage your Ratio Six and might invalidate the warranty. We also do not recommend using vinegar to descale your machine, as it is often not strong enough of an acid to remove mineral buildup, and it can leave behind residue that will affect the aroma of your coffee. 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 the 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.Ratio Six Series Coffee Machine 7

  1. Add one package of cleaning powder to a clean pouring vessel, then add about 40oz/1.3L 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 the brew cycle three times with clean water.
    In case of contact with the 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.

MAINTENANCE

  • Thermal carafe care
    The Ratio thermal carafe is a double-walled vacuum-sealed stainless steel vessel. 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.
  • Optional glass carafe
    You may also purchase the Ratio Glass carafe, which is hand-blown and made of borosilicate glass. This carafe uses a Chemex filter or Able Kone stainless steel filter.
  • Metal care
    Use a microfiber towel to wipe up water from the surface of the machine. Most coffee stains can be removed with a moistened towel. You may use diluted Ratio Machine Wash on the metal parts to remove coffee stains. Do not use an abrasive brush or scrub pad on the machine, as it can scratch the surface.

5-YEAR LIMITED WARRANTY

We proudly offer this Limited Warranty for the Ratio Six coffee machine in the USA.

What This Warranty Covers

Ratio LLC warrants the Ratio Six coffee machine for 5 years from the date of original purchase against defects in material and workmanship. If during this period, your Ratio Six coffee machine is determined to be defective following our inspection, we will repair or replace your coffee 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

How To Get Warranty Service in the United States

  • If your Ratio Six coffee machine needs service, please contact us at [email protected] 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 Six coffee 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 coffee machine in our records.
  • Do not ship your coffee machine to us without a return authorization. You are responsible for shipping charges. Returned coffee 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 coffee machine and determine that the unit is covered by warranty, we will repair or replace your coffee machine at our discretion. If we determine that your unit only requires cleaning or requires repairs under Warranty Exclusions, we will contact you and offer 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 terms and service outside the USA, please visit ratiocoffee.com/warranty

DISCLAIMER AND LIMITATION OF LIABILITY

THE WARRANTIES SET FORTH HEREIN ARE EXCLUSIVE AND NO OTHER EXPRESS WARRANTIES ARE MADE BY RATIO OR ARE AUTHORIZED TO BE MADE WITH RESPECT TO THE PRODUCT. RATIO LIMITS THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO THE DURATION OF THIS LIMITED WARRANTY. IN NO EVENT WILL RATIO, ITS DISTRIBUTORS, OR ITS RESELLERS BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE WHATSOEVER, INCLUDING BUT NOT LIMITED TO LOST PROFITS OR COMMERCIAL LOSS ARISING FROM USE OR FAILURE OF OUR PRODUCTS, TO THE FULL EXTENT THOSE DAMAGES CAN BE DISCLAIMED UNDER APPLICABLE LAW. THE REMEDIES PROVIDED UNDER THIS LIMITED WARRANTY ARE EXCLUSIVE.

Some states do not allow limitations on how long an implied warranty lasts or do not allow the exclusion of incidental or consequential damages, so the above limitations may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

For more manuals by Ratio Coffee, visit ManualsLibraryy

Ratio Six Series Coffee Machine-FAQs

 

How many cups of coffee can the Ratio Six brew?

The Ratio Six brews up to 6 cups (40 oz / 1.25 L) per batch, perfect for home use.

What is the secret to great-tasting coffee with Ratio Six?

Use fresh, high-quality beans, the correct grind size, filtered water, and the recommended coffee-to-water ratio.

What is the golden ratio for coffee?

The golden ratio is 1:16–1:18, meaning one part coffee to 16–18 parts water, for a balanced and flavorful brew.

Who owns Ratio Coffee?

Mark Hellweg is the Founder & CEO of Ratio Coffee.

What is the 80/20 rule for coffee?

80% of coffee flavor comes from the bean and its origin, while 20% depends on brewing method and equipment.

How long does a Ratio Six coffee machine last?

With proper maintenance, it typically lasts 5–10 years, depending on usage and cleaning habits.

Can I reuse the coffee filter in Ratio Six?

Yes, if using a reusable filter, rinse thoroughly after each use. Paper filters are single-use only.

Is Ratio Six a plastic-free coffee maker?

No, it has minimal BPA-free plastic components, but most key parts are stainless steel or glass.

Can I make espresso with the Ratio Six?

No, the Ratio Six is a drip coffee machine, not an espresso machine.

What water temperature is ideal for brewing in the Ratio Six?

The machine heats water to the optimal 200°F (93°C) for proper extraction.

Does Ratio Six make coffee taste like a coffee shop?

Yes, using the right beans, grind size, water, and brew ratio can replicate café-quality coffee at home.

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