COSLUS T50

COSLUS T50 Portable Water Dental Flosser Instruction Manual

Model: T50

1. Product Overview

The COSLUS T50 is a compact, portable water dental flosser designed for effective oral hygiene. It features a telescopic design, multiple pressure settings, and a screen display for ease of use, making it suitable for daily use and travel.

COSLUS T50 Portable Water Flosser

Image: COSLUS T50 Portable Water Flosser, showcasing its compact design and features.

2. Package Contents

Verify that all items are present in the package:

  • COSLUS T50 Water Flosser Unit
  • 4 Replacement Nozzles (Jet Tips)
  • Type-C Charging Cable (Note: Power adapter is not included)
  • User Manual
  • Storage Pouch

Video: This video demonstrates the contents included in the COSLUS T50 Water Flosser package.

3. Setup and Assembly

3.1 Charging the Device

Before first use, fully charge the water flosser. The device uses a Type-C charging port. A full charge takes approximately 2.5 hours and provides up to 30 days of use.

  • Connect the provided Type-C charging cable to the flosser's charging port.
  • Connect the other end of the cable to a compatible 5V Type-C power adapter (not included), such as a wall charger, computer, car charger, or power bank.
  • The battery indicator on the screen will show charging status.
COSLUS T50 charging with Type-C cable

Image: The COSLUS T50 Water Flosser being charged via a Type-C cable, illustrating compatibility with various Type-C power sources.

3.2 Installing the Nozzle

  • Select the desired nozzle (jet tip).
  • Insert the nozzle into the opening at the top of the flosser until it clicks into place. Ensure the button protrudes and you hear a click for correct installation.
  • To remove, press the nozzle release button and pull the nozzle out.
Correct and incorrect nozzle installation for COSLUS T50

Image: Visual guide demonstrating the correct and incorrect methods for installing the nozzle and extending the water tank on the COSLUS T50 Water Flosser.

3.3 Filling the Water Tank

  • Extend the telescopic water tank fully until it is flush with the main body and you hear a click.
  • Open the water tank cover.
  • Fill the 240ml tank with lukewarm water. The wide mouth design allows for easy filling.
  • Close the water tank cover securely.
Filling the 240ml water tank of COSLUS T50

Image: Instructions on how to fill the 240ml water tank of the COSLUS T50, highlighting its wide opening for easy refilling and detachable design for cleaning.

4. Operating Instructions

4.1 Power On/Off

  • To power on, press and hold the power button for 3 seconds.
  • To power off, press and hold the power button for 3 seconds again.

4.2 Selecting Mode and Pressure

The COSLUS T50 offers 3 modes and 9 adjustable pressure levels, indicated by an LED screen and tri-color pressure light.

  • Modes: Press the "Select Mode" button to cycle through Soft, Clean, and Jet modes.
    • Soft: Gentle cleaning, ideal for sensitive gums or first-time users.
    • Clean: Daily teeth cleaning.
    • Jet: Super deep clean. In Jet mode, the device sprays only while the button is pressed and held. It auto-shuts down within 10 seconds of release.
  • Pressure Levels: Press the "Select Pressure" button to adjust the intensity within each mode (Levels 1-3, indicated by green, blue, and purple lights respectively).
COSLUS T50 display and pressure settings

Image: Detailed view of the COSLUS T50's LED screen and control buttons, illustrating the 9 pressure levels and their corresponding color indicators (Green-Low, Blue-Medium, Purple-High) across Soft, Clean, and Jet modes.

Video: This video demonstrates the clear display and tri-color pressure light feature of the COSLUS T50 water flosser, showing how to select modes and adjust pressure.

Video: This video highlights the pressure indicator light, ensuring precise control and eliminating guesswork during use.

4.3 Flossing Technique

  • Lean over a sink and place the nozzle tip into your mouth.
  • Close your lips slightly to prevent splashing, but allow water to flow from your mouth into the sink.
  • Aim the water jet at the gumline at a 90-degree angle.
  • Start with your back teeth and work your way to the front, pausing briefly between teeth.
  • Move slowly along the gumline, cleaning both the front and back surfaces of your teeth.
  • For braces, use the orthodontic nozzle and carefully clean around brackets and wires.
COSLUS T50 with different nozzle tips for targeted cleaning

Image: Illustration of the four professional tips included with the COSLUS T50, demonstrating their targeted cleaning capabilities for hidden areas, braces, and daily oral care.

Video: A comprehensive guide on how to use the COSLUS T50 water flosser, covering filling, mode selection, pressure adjustment, cleaning technique, and storage.

5. Maintenance and Cleaning

5.1 Cleaning the Water Tank

  • After each use, empty any remaining water from the tank.
  • Detach the water tank from the main unit for thorough cleaning.
  • Rinse the tank with clean water and allow it to air-dry completely to prevent mold or mildew buildup.

5.2 Cleaning the Nozzles

  • Rinse the nozzles under running water after each use.
  • For deeper cleaning, nozzles can be soaked in a solution of 2 parts water to 1 part white vinegar for 5-10 minutes, then rinsed thoroughly.

5.3 Storing the Device

  • Ensure the device is dry before storing.
  • The telescopic tank can be collapsed for compact storage.
  • The nozzles can be stored within the built-in storage compartment on the device to prevent loss and maintain hygiene.
  • Store the flosser in the provided pouch for travel.
COSLUS T50 jet tips storage

Image: The COSLUS T50 Water Flosser demonstrating its built-in storage for jet tips, ensuring they are secure, clean, and readily accessible.

6. Troubleshooting

ProblemPossible CauseSolution
Device does not turn on.Low battery or not charged.Charge the device fully using the Type-C cable.
Weak water pressure.Low battery, insufficient water, or nozzle blockage.Ensure the device is charged, the tank is full, and the nozzle is clean and free of debris. Select a higher pressure setting.
Water leaks from the device.Water tank not fully extended or improperly sealed.Ensure the telescopic tank is fully extended and clicked into place. Check that the water tank cover is securely closed.
Nozzle does not stay in place.Nozzle not correctly installed.Re-insert the nozzle until it clicks firmly into position.

7. Specifications

  • Model: T50
  • Brand: COSLUS
  • Water Tank Volume: 240 ml
  • Pressure Range: 30-140 PSI (9 adjustable levels)
  • Power Source: Battery Powered (1 Lithium Ion battery required)
  • Charging Time: Approximately 2.5 hours
  • Runtime: Up to 30 days on a single charge
  • Waterproof Rating: IPX7
  • Material: Plastic
  • Dimensions (Collapsed): Approximately 5.24 x 3.7 x 1.65 inches
  • Weight: Approximately 10.23 ounces
  • Certifications: BPA-free, CE, FCC, IPX7, RoHS

8. Warranty and Support

The COSLUS T50 Water Dental Flosser is designed for durability and reliability. It comes with a 24-month warranty, reflecting the manufacturer's commitment to quality and customer satisfaction.

  • For warranty claims or technical support, please refer to the contact information provided in your product packaging or visit the official COSLUS website.
  • Keep your purchase receipt as proof of purchase for warranty services.

© 2026 COSLUS. All rights reserved.

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