Y-BRUSH FC3840 Water Flosser User Guide

: June 12, 2024
: Y-BRUSH

Table of Contents

Y-BRUSH FC3840 Water Flosser
Product Information
IMPORTANT SAFETY PRECAUTIONS
FCC STATEMENT
Pack Contents
Accessories and technical data
Product Use
Cleaning and Maintenance
Troubleshooting
After-Sales Services
References
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Download This Manual (PDF format)

Y-BRUSH FC3840 Water Flosser

Y-BRUSH-FC3840-Water-Flosser-PRODUCT

Product Information

The Water Flosser is a dental jet device designed for oral hygiene. It effectively cleans between teeth and below the gumline using water pressure. The product comes with two interchangeable nozzles and a power cord. The battery voltage is 3.7V, and the adapter voltage is the nominal value. The product is manufactured by Y-BRUSH and is intended for use in various countries.

IMPORTANT SAFETY PRECAUTIONS

When using electrical products, particularly around children, basic safety precautions should always be followed, including the following:
READ ALL INSTRUCTIONS BEFORE USING.
DANGER: To reduce the risk of electric shock:

Do not use while bathing.
Do not place or store the appliance where it can fall or be drawn into a bathtub, shower stall or sink/basin.
Do not immerse or drop it in water or any other liquid.
Do not attempt to catch a device that has fallen into water. Unplug it immediately.
Do not handle the charger with wet hands when charging.

WARNING: To reduce the risk of burns, electric shock, fire, or injury:

Never leave product unattended when plugged in.
Exception: contact lens disinfectors, toilet seat assemblies and similar products.
Close supervision is necessary when this appliance is used by, on or near children or invalids.
Use this device only for its intended purpose as described in this manual. Do not use attachments not recommended by the manufacturer.
Never use this appliance if it has a damaged cord or plug, if it is not working properly, if it has been dropped or damaged, or if it has fallen into water. Resend unit to a service center for examination and repair.
Keep cord away from hot surfaces.
Never block the ventilation openings of the device or place it on a soft surface, such as a bed or sofa, where the ventilation openings may be blocked. Keep ventilation openings free of lint, hair, etc.
Never use it while sleeping or drowsy.
Never drop it or insert any object into any openings or pipes.
Unplug unit before filling. Fill (the tank) with water only, unless otherwise specified by the manufacturer. Do not overfill unless there are special filling instructions.
The device must only be supplied with the very low safety voltage corresponding to the marking of the device (5V, 1A).
This device contains a battery which is not replaceable.
This appliance can be used by children aged 8 and over and by adults. people with reduced physical, sensory or mental capacities or devoid of experience and knowledge under supervision. Cleaning and user maintenance shall not be made by children without supervision. Children should not play with the device.
This appliance should only be used with cold or hot water (max 40°C).
Use this device only for its intended purpose as described in this manual. Do not use attachments not recommended by the manufacturer.
Do not use outdoors or operate in areas where aerosol products (spray) or oxygen is (are) being administered.
Warning: To reduce the risk of electric shock and other hazards, follow these safety instructions:

FCC STATEMENT

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

this device may not cause harmful interference,
this device must accept any interference received, including interference that may cause undesired operation.

Warning: Any changes or modifications to this device not expressly authorized by the party responsible for compliance could void the user’s authority to operate the device.
NOTE: This device has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy and, if not installed and used instructions, it may cause harmful interference to radio communications. However, there is no guarantee that such interference will not occur in a particular installation. If this device does cause unwanted interference to radio or television reception, which can be determined by turning the device on or off, the user can try to correct the interference by one or more of the following measures:

Reorient or move the antenna;
Increase the space between the device and the receiver;
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected;
Consult the dealer or an experienced radio/TV technician for help.

Safety Measures

Basic precautions should be followed when using electrical products, especially when children are present. Please read all safety instructions before using this device.

Warning: To reduce the risk of electric shock and other hazards, please observe the safety guidelines below:

Check whether the charger or power cord is damaged before first use and during continued use of this device. If either is damaged, do not attempt to use the device. Instead, contact the after-sales service to replace it.
Do not throw the device into fire or other heated environment.
Never immerse the device in water or other fluids.
Do not attempt to plug or unplug the charger when your hands are wet. To plug or unplug the device, grasp the charger, not the power cord.
Be careful not to modify, damage or destroy charging equipment. Avoid stretching, bending or twisting the power cord with force. Do not place heavy objects on the power cord or trap it between other objects.
Do not drop or insert foreign objects into any openings on the device.
Do not place the device, charger or power cord on hot surfaces.
Do not place the device in a hot or humid place, or in a place exposed to direct sunlight.
Before cleaning and maintenance, make sure the device is turned off and not charging.

Warning: To reduce the risk of burns, electric shock, fire, and other risk of injury, please observe the following safety precautions:

Do not use this device for any purpose other than that described in the manual.
Do not use this device without a mouthpiece installed.
Users with periodontitis or those who have had oral surgery in past two months should consult a physician before using this device.
Only bits and accessories included, sold or recommended for this device should be used.
Do not disassemble or replace parts of this device.
To avoid burns, do not fill the tank or attempt to clean your mouth with water hotter than 40°C.
Do not use this device for any purpose other than oral hygiene.
To avoid injury, do not press the mouthpiece forcefully against your gums or teeth.
Do not use this device in outdoor locations where aerosols (sprays) or oxygen supplies are used.
Remove all cosmetic dental accessories before using this appliance.
Do not use iodine, salt water, or concentrated essential oils that are insoluble in water with this device. This will reduce its performance and shorten its lifespan.
Do not fill the device with pure mouthwash. If you want to use a mouthwash, dilute it in the correct proportions.

Pack Contents

Y-BRUSH-FC3840-Water-Flosser-FIG-1

Accessories and technical data

Product accessories

Y-BRUSH-FC3840-Water-Flosser-FIG-2

Product Specifications

Product Name	Y-BRUSH Oral Irrigator

Oral Irrigator

Product Use

Before Starting: Very Important! Ensure the device is fully charged before using it for the first time by connecting the USB cable to the charging port and turning on the power. This device cannot be used while charging.

Fill the Water Tank
Remove the water tank by rotating it clockwise and pulling downwards. Pour water into the tank, then reattach the tank by aligning it with the snap joint and rotating counterclockwise. Note: Ensure that the device is turned off before filling the water tank.
Install the Tip
Insert the tip into the hole on the top of the controller. You should hear a “click” sound on successful installation. Rotate the tip to adjust the direction of water outflow. If you need to replace the irrigator, press and hold the uninstall button, then remove the irrigator.
Select Mode
This device can only operate in a single mode.
Before Use
Before using the device, lean slightly over the sink, extend the Tip into your mouth and aim it at the teeth, gums, or between the teeth. Rotate the tip to adjust the direction of the water outflow so that it is perpendicular to the part of your mouth you wish to clean. Ensure that your mouth is open enough so that any water flows right out.
Note: You may experience itching or minor gum bleeding during use. This is normal and should typically stop after 1-2 weeks.
Use
Press and hold the switch button for 1 second to start the device. To pause the device during use, tap the switch button. Press and hold the button again to resume operation. This device is equipped with a 120-second shutdown timer. Automatic shutdown will only trigger if the water tank is empty. If you wish to keep using the device, tap the switch button to turn it off, then restart the device after refilling the water tank. Turn off the device after you are finished using it.
Usage tips: For best results, start with the molars (posterior teeth) and start cleaning towards the front teeth. While cleaning, move the tip 90° along the gum line. Stay between each tooth for a short period. Close your lips slightly to avoid the water from spraying out, but leave enough space so that water can flow freely from your mouth to the sink.
After Use
After use, open the water tank and pour out any remaining liquid. Turn on the device and drain any liquid left until the irrigator no longer sprays out any liquid, then turn off the device.
Charging
The indicator light is white, and will remain on while the device is in use. When the device is on low charge, the indicator light will flash for 5 seconds, after which the device will turn off. When the device is turned on while on low charge, the indicator light will flash for 3 seconds and then the device will turn off, which indicates that charging is required. While the device is charging, the indicator light will gradually darken over time. While the device is fully charged, the indicator light will remain on.

Cleaning and Maintenance

Cleaning the Body

Clean this device only with clean water or a neutral detergent. Do not use corrosive or abrasive detergents. Do not use water above 50¥ to clean any part of this device, as this may lead to damage or reduced performance.
Do not soak the oral irrigator in water. If necessary, clean the surface of the device by wiping with a soft cloth dipped in mild, non-corrosive detergent.

Cleaning the Tank

Remove the water tank.
Rinse the inside of the tank with clean room temperature water. Do not clean the tank with any type of detergent.
Reinstall the water tank after it has been cleaned.

Removing Hard Water

Depending on the mineral content of the water used, hard water deposits may build up on the device. Failure to remove hard water buildups will reduce product performance.
Point the Tip at the sink, turn on the device, then let it run until all water has been used. Fill the water tank with clean warm water, then repeat the above steps to clean the tank. This cleaning process should be repeated every 1-3 months to maintain product performance.

Maintenance

Ensure that the battery is fully charged before initial use.
Ensure that the battery is fulled charged before storing the device for an extended period.
In order to prolong battery life, charge the device immediately when the battery is low.

Troubleshooting

Problem	Cause	Solution

There is a leak between the tip and the body

| The seal of the Tip holder is damaged, or the tip was not installed in the proper position| Contact the vendor for repairs, or reinstall the tip in the proper position
There is a leak in the water inlet| The seal is damaged, or there are impurities on the inlet| Contact the vendor for repairs
There is a leak in the water tank|

The seal is damaged

| Replace the seal, or contact the

vendor for repairs

There is not enough water pressure|

Not enough charge

| Try again after charging the device

The device cannot start

|

Not enough charge

| Try again after charging the device or contact the vendor for repairs

The device is not releasing any water

| The device is being used for the ﬁrst time, or has not been used in an extended period| Add a suitable amount of water to the tip installation hole and try again after reinstalling the tip.

If you were not able to solve the problem with the troubleshooting instructions above, please contact the vendor you purchased the device from or visit a designated after-sales repair location.

After-Sales Services

When you purchase this device, ask the vendor to provide a valid sales certificate to serve as your warranty.
In accordance with national regulations, this device includes a 2-year free warranty period for failures not attributable to user error. This warranty does not include Tips. If the warranty period is exceeded, the device can be sent to designated after-sales locations for paid maintenance.
Charges and service fees may still be applied during the warranty period in the below circumstances.
- The device was damaged due to improper use, maintenance, or storage by the consumer.
- The device was damaged by a service agent that has not undertaken the “three guarantees”.
- The sales voucher is not valid or already two years over the expiration date.
- The device was damaged during commercial use.
- The device was damaged by a force majeure event (such as lightning, earthquake, or fire).

Email : customers@y-brush.com
Number : + 33 7 83 47 71 58
Site : www.y-brush.com

We reserve the right to final interpretation in case of any typographical errors or misunderstandings found in the contents of this manual. Device upgrades and updates will be incorporated into a new version of the manual without notice. The appearance and color of the product is subject to the packaged model, which shall take precedence over any illustrations of descriptions found in this manual.

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customers@y-brush.com
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