1. Introduction and Product Overview
Thank you for choosing the FlossJet Cordless Oral Irrigator FC5240. This device is designed to provide an efficient and personalized oral care experience, helping to improve gum health and achieve a comprehensive clean. Please read this manual thoroughly before use to ensure proper operation and maintenance.

Image 1.1: FlossJet Cordless Oral Irrigator FC5240 with included tips and USB charging cable.
Key Features:
- Deep Cleaning: Adjustable water pressure from 20 to 115 PSI for effective stain and plaque removal.
- Large Water Tank: 300ml detachable water tank for uninterrupted use and easy cleaning.
- Waterproof Design: IPX7 rating allows for safe use in the shower.
- Multiple Modes: 4 cleaning modes (Low, Medium, High, Pulse) to suit various oral care needs.
- Memory Function: Automatically recalls the last used mode.
- Versatile Tips: Includes 5 professional 360° rotating tips for comprehensive oral hygiene.
- Extended Battery Life: High-capacity lithium battery provides 14 to 21 days of use on a single charge.
- Portable Design: Compact and lightweight with USB-C charging for travel convenience.
- Ergonomic Design: Features an ergonomic curved handle and electroplating technology for comfortable grip and durability.

Image 1.2: Overview of the FlossJet FC5240's versatile features.
2. Safety Information
To ensure safe operation and prevent injury or damage, please adhere to the following safety guidelines:
- Always keep the device dry when not in use.
- Do not submerge the device in water for extended periods. While IPX7 waterproof, it is not designed for continuous submersion.
- Keep the device out of reach of children.
- Do not use the device if you have any medical conditions that make you prone to infection or if you have any open wounds in your mouth. Consult a dental professional if unsure.
- Always follow the instructions provided in this user manual for safe use and maintenance.
- Do not attempt to disassemble or repair the device yourself. Contact customer support for assistance.
- Use only clean water or dentist-recommended mouthwash in the water tank.
- First-time users and individuals with sensitive gums should start on the lowest pressure setting and gradually adjust.
3. Product Components
The FlossJet Cordless Oral Irrigator FC5240 kit includes the following items:
- 1 x FlossJet Oral Irrigator (Model FC5240)
- 2 x Standard Tips (for daily oral hygiene)
- 1 x Orthodontic Tip (for braces)
- 1 x Periodontal Pocket Tip (for gum line cleaning)
- 1 x Tongue Scraper Tip (for fresh breath)
- 1 x USB-C Charging Cable (adapter not included)
- 1 x User Manual

Image 3.1: The five professional 360° rotating tips included with the FlossJet FC5240.
4. Getting Started: Setup and Charging
4.1 Initial Charge
Before first use, fully charge the device. Connect the provided USB-C charging cable to the charging port on the device and plug the other end into a compatible USB power adapter (not included), PC, power bank, or car charger. The charging indicator light will show the charging status. A full charge provides approximately 14 to 21 days of use, or up to 60 uses.

Image 4.1: The FlossJet FC5240 charging via USB-C, compatible with various power sources.
4.2 Attaching a Tip
Select the desired tip for your oral care needs. Insert the tip into the opening at the top of the irrigator handle until it clicks securely into place. To remove a tip, press the release button on the side of the irrigator and pull the tip out.
4.3 Filling the Water Tank
Rotate and open the detachable 300ml water tank from the base of the device. Fill the tank with lukewarm water. For enhanced cleaning, a dentist-recommended mouthwash can be added. Securely reattach the water tank to the device, ensuring it is properly sealed to prevent leaks.

Image 4.3: Visual guide for setting up the FlossJet FC5240, including filling the tank and attaching tips.
5. Operation
5.1 Selecting a Mode
The FlossJet FC5240 offers 4 cleaning modes to suit various preferences and needs. Press the mode selection button to cycle through the options:
- Low: Gentle care for sensitive gums or first-time users.
- Medium: Balanced cleaning for daily use.
- High: For a deep and thorough clean.
- Pulse: Intermittent bursts to massage gums and improve circulation.
The device features a memory function that automatically recalls the last used mode for convenience.

Image 5.1: Detailed view of the control panel and the four distinct cleaning modes.
5.2 Using the Oral Irrigator
- Lean over a sink and place the tip into your mouth, directing it towards your gumline at a 90-degree angle.
- Long press the power button to turn the device on. A short press will turn it off.
- Keep your mouth slightly open to allow water to flow into the sink.
- Guide the water jet along your gumline and between your teeth, pausing briefly between each tooth. Ensure all areas are reached.
- The device has a 2-minute timer to ensure adequate cleaning time.
- After use, short press the power button to turn off the device.
6. Maintenance and Cleaning
Regular cleaning and maintenance will prolong the life of your FlossJet Oral Irrigator.
- After Each Use: Empty any remaining water from the tank. Detach the water tank and rinse both the tank and the irrigator head under running water.
- Cleaning Tips: Rinse the tips thoroughly under running water. For deeper cleaning, tips can be soaked in a denture cleaning solution or a mixture of water and vinegar.
- Drying: Allow all components to air dry completely before reassembling or storing the device.
- Tank Cleaning: The open design of the 300ml detachable tank allows for easy cleaning, helping to prevent residue buildup.
- Exterior Cleaning: Wipe the exterior of the device with a soft, damp cloth. Do not use abrasive cleaners or harsh chemicals.

Image 6.1: The detachable water tank design of the FlossJet FC5240 facilitates easy cleaning and prevents residue accumulation.
7. Troubleshooting
If you encounter any issues with your FlossJet Oral Irrigator, please refer to the following common troubleshooting steps:
- Device Not Turning On: Ensure the device is fully charged. If the battery is low, connect it to the USB-C charger.
- Weak Water Pressure: Check if the water tank is sufficiently filled. Ensure the tip is securely attached and not clogged. Clean the tip if necessary.
- Water Leakage: Verify that the water tank is correctly and securely attached to the main unit. Ensure the rubber seal is intact and free from debris.
- Unusual Noise: A slight humming sound is normal during operation. If the noise is excessive or unusual, ensure the water tank is properly seated and the tip is correctly installed.
- Device Not Turning Off: If the power button is unresponsive, try holding it down for a few seconds. If the issue persists, allow the battery to drain completely and then recharge. If problems continue, contact customer support.
For further assistance, please contact FlossJet customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | FC5240 |
| Brand | FlossJet |
| Water Tank Capacity | 300ml |
| Water Pressure Range | 20 to 115 PSI |
| Cleaning Modes | 4 (Low, Medium, High, Pulse) |
| Tips Included | 5 (2 Standard, 1 Orthodontic, 1 Periodontal, 1 Tongue Scraper) |
| Waterproof Rating | IPX7 |
| Battery Life | 14-21 days / up to 60 uses per charge |
| Charging Port | USB-C |
| Noise Level | Below 58 decibels |
| Dimensions | 9.92 x 3.35 x 2.99 inches |
| Weight | 13.05 ounces |
9. Warranty and Support
For information regarding warranty coverage, product registration, or technical support, please refer to the warranty card included in your product packaging or visit the official FlossJet website. Please retain your proof of purchase for warranty claims.
Legal Disclaimer: Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition. This product is an oral hygiene device.


