• Check the Circuit: Always try plugging the appliance into a different outlet or circuit first. This is the most common fix for power issues.
• Safety Auto Shut-Off: The Ottomatic features a safety shut-off mechanism. If the machine turns off unexpectedly, it may be due to a circuit overload or an internal blockage.
• Clear Blockages: If the machine remains unresponsive, it may require a Descaling Cycle to clear internal mineral buildup that is triggering the safety sensor.

• Adjust Your Grind: If water is passing through too quickly, your coffee grounds are likely too coarse. We recommend a medium-coarse grind (similar to sea salt).
• Check Your Ratios: Ensure you are using enough coffee. A good rule of thumb is one rounded tablespoon of coffee grounds per 5oz cup.

• Is this normal? Yes. It is perfectly normal for a small amount of residual water to remain in the tank after a brew cycle is complete.
• Maintenance Tip: To prevent moisture buildup, we recommend removing the tank lid after use to let it air dry, or simply wiping the interior with a clean, dry cloth.

• Standard Maintenance: While we generally recommend descaling every 40 brew cycles or three months, you may need to do so more frequently if you live in a hard water region.
• Hard Water vs. Filtered Water: Mineral buildup (scale) can clog internal pipes and cause the machine to run poorly. For the best performance and flavor, we highly recommend using filtered water for every brew.
• Signs You Need to Descale: If you notice a slower brew time, unusual noise, or the machine failing to complete a cycle, it is time to use the CHEMEX® Cleaning Solution.

If you notice white "flaking" or crust inside your tank, this is calcium buildup. Increase your descaling frequency to once a month to extend the life of your Ottomatic.

If you are still having trouble after trying the below options, contact us by email or phone.
Email: Info@chemexcoffeemaker.com
Phone: 413-331-4460

The Ottomatic is BPS/BPF/BPA and Phthalates free. All Parts are FDA approved.

Polypropylene, Styrenic acrylic, platinum cured food safe silicone, and aluminum

The water starts in the Styrenic acrylic tank then moves to a platinum cured food safe silicone tube to an aluminum water boiler component. From there it goes back to the platinum cured food safe silicone tube to the polypropylene spray head.

The Handblown 3 and 5 cup coffeemakers are compatible with the Ottomatic.

The Ottomatic is made in China.

It is normal for a small amount of water to be left in the tank after a brew cycle.

When set in “Iced Coffee Mode” the warming plate remains off during the brewing process.

12 ½ “ X 7 ½ “ X 13 “

90 Minutes.

There should be a minimum of ½ an inch of liquid in the carafe at all times when on the warming plate.

The Ottomatic uses "Greedy Cup" spray head technology to pull and push the water on a staged brewing cycle. All 9 points on the spray head contribute to this process although water does not come out of all 9 points.

The Ottomatic uses a “Flash Boiler” to heat the water and push it up into the spray head. For it to work, the water must be in the stated range of 197.6-204.8. Therefore, just by the fact that the machine is operating, it is an indication that the water is heated to the correct temperature.

Within two pulses the water will have reached optimal temperature. The brewed coffee in the carafe will have cooled and not be in that high of a range, which is the normal process of pour over brewing.

For best results, we recommend using the CHEMEX® Coffeemaker Cleaning solution designed specifically for your Ottomatic®. Keeping cleaner on hand makes it easy to stay on top of regular maintenance and ensure your machine continues to perform at its best. Additional cleaning solution can be ordered anytime from our website.
CHEMEX Automatic Cleaner