1. Introduction
Thank you for choosing the Slevoo C1-M20 Smart Countertop Reverse Osmosis Water Filter System. This advanced 6-stage filtration system is designed to provide clean, great-tasting water for your home or office. It features alkaline remineralization, a TDS display, and a 5L capacity tank, all without requiring complex installation.
This manual provides essential information for the safe and efficient operation of your water filter system. Please read it thoroughly before first use and keep it for future reference.
2. What's in the Box
Upon unpacking, please verify that all components are present and undamaged:
- RO Drinking Water System (Main Unit)
- High Borosilicate Glass Carafe
- Alkaline Remineralization Filter (2 units)
- High Borosilicate Glass Infuser Basket
- Instruction Manual
- Fruit Tea Recipe Card
- 5-IN-1 Composite Filter

Image: The Slevoo C1-M20 main unit with the 5-in-1 filter and glass carafe.
3. Safety Information
- Ensure the power source is compatible with the unit's requirements (AC 100-240V, 60Hz).
- Do not immerse the main unit in water or other liquids.
- Keep the appliance away from heat sources and direct sunlight.
- Operate the system within the specified temperature range: 39.2°F (4°C) to 104°F (40°C).
- Do not allow children to operate the appliance without supervision.
- Only use original Slevoo replacement filters.
4. Setup
Follow these steps for the initial setup of your Slevoo C1-M20 water filter system:
- Unpack and Place: Remove all packaging materials. Place the unit on a stable, flat countertop.
- Wash the Feed Water Tank: Lift and remove the feed water tank from the back of the unit. Wash it thoroughly with clean water.
- Fill the Feed Water Tank: Fill the feed water tank with tap water up to the MAX fill line (5L/169oz). Place the tank back into the system, ensuring it is securely seated.
- Wash the Glass Carafe: Wash the glass carafe with clean water.
- Install Alkaline Remineralization Filter: Insert the mineralized filter into the designated slot in the glass carafe lid.
- Initial Flushing (Important for First Use):
- Plug in the machine.
- Place the empty glass carafe on the water tray. The machine will automatically make water until the carafe is full (40oz).
- Empty the water from the carafe and the feed water tank into a sink. Note: This water is not drinkable during the flushing process.
- Repeat steps 3-5 four (4) times to flush out the protective liquid from the filter.
Video: Step-by-step guide on how to set up the Slevoo C1-M20 Reverse Osmosis Water Filter Countertop system, including initial flushing procedures.

Image: Detailed diagram illustrating the 6-stage filtration process, including PP Sediment, Activated Carbon, RO Membrane, and Alkaline Mineral Filter layers.
5. Operating Instructions
Your Slevoo C1-M20 offers multiple ways to dispense purified water:
5.1 Automatic Water Purification (40oz Carafe)
- Place the empty glass carafe on the water tray.
- The machine will automatically detect the carafe and begin filling it with purified water.
- The system will automatically stop when the carafe reaches its 40oz capacity, preventing overflow.

Image: Visual representation of the auto-fill and auto-stop function when filling the 40oz glass carafe.
5.2 Dispensing Specific Volumes
- Place your cup or container on the water tray.
- Use the touch controls on the top panel to select your desired volume: 8oz, 20oz, or 40oz.
- The machine will dispense the selected volume and stop automatically.
5.3 Manual Dispensing (Any Volume)
- Place your cup or container on the water tray.
- Short press the manual water button (often indicated by a water droplet icon) to start dispensing.
- Press the button again to stop dispensing when you have reached your desired volume.

Image: The control panel displaying real-time TDS values for raw and purified water, along with volume selection options.
5.4 Using the Glass Infuser Basket
The included glass infuser basket allows you to create fruit-infused water:
- Place your desired fruits or tea leaves into the infuser basket.
- Insert the infuser basket into the glass carafe.
- Fill the carafe with purified water using the automatic or manual dispensing methods.
- Allow the water to infuse for a period to achieve desired flavor.

Image: The Slevoo C1-M20 system with the glass carafe and infuser basket, demonstrating how to add fruits for flavored water.
6. Maintenance
6.1 Filter Replacement
The Slevoo C1-M20 uses a 5-IN-1 composite filter. The system's monitoring display will indicate the filter's lifespan and when replacement is needed. Typically, the filter requires replacement once every 12-24 months, depending on usage and water quality.
- To replace the filter, ensure the unit is unplugged.
- Remove the old filter by twisting and lifting it out.
- Insert the new 5-IN-1 composite filter and twist to secure it.
- After replacement, perform an initial flushing cycle as described in the Setup section to prepare the new filter.

Image: The Slevoo 5-in-1 composite filter, highlighting its compact design and long lifespan.
6.2 Cleaning
- Regularly clean the feed water tank and glass carafe with mild soap and water. Rinse thoroughly.
- Wipe the exterior of the main unit with a soft, damp cloth. Do not use abrasive cleaners.
- If the machine will not be used for an extended period, remove the filter and store it in the refrigerator.
7. Troubleshooting
If you encounter issues with your Slevoo C1-M20 system, please refer to the following common solutions:
- No Power: Ensure the power cord is securely plugged into both the unit and a working electrical outlet.
- No Water Dispensing: Check if the feed water tank is properly installed and contains sufficient water. Ensure the glass carafe is correctly placed on the water tray.
- TDS Readings Seem Incorrect: Ensure the unit has completed its initial flushing cycles. If issues persist, contact customer support.
- Slow Water Flow: Check the filter life indicator. A clogged filter can reduce flow rate. Replace the filter if necessary.
- Water Taste/Odor Issues: Ensure the filter is new or within its lifespan. Perform additional flushing cycles if the taste is unusual after filter replacement.
For more complex issues, please contact Slevoo customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Product Dimensions | 15.2"L x 7.3"W x 16.1"H |
| Item Weight | 10 Pounds |
| Installation Type | Countertop |
| Power Source | Corded Electric |
| Special Features | Automatic Shut-Off, Built-In TDS Meter, Change Filter Indicator, LED Display, Reduce TDS |
| Lower Temperature Rating | 39.2 Degrees Fahrenheit |
| Upper Temperature Rating | 104 Degrees Fahrenheit |
| Maximum Flow Rate | 378.5 Liters Per Day |
| Operating Pressure Range | 14.5-58 PSI |
9. Warranty and Support
Slevoo provides up to 1 year of reliable after-sales service and dedicated customer support for your C1-M20 water filter system. All components are built with food-grade materials and tested to SGS standards for quality and safety.
If you have any questions or require assistance, please do not hesitate to contact our trained water specialists:
- Phone: 1-800-301-8808 (Mon-Fri, 9:00 am - 5:00 pm PST/PDT)
- Email: serviceslevoo@gmail.com
We are committed to supporting you throughout the product's life.



