1. Introduction
Thank you for choosing the Bear 5L Cool Mist Top Fill Humidifier. This ultrasonic humidifier is designed to improve your indoor environment by quickly increasing humidity, helping to keep skin moisturized, and relieving discomfort from dry air. Its large capacity and quiet operation make it ideal for bedrooms, large rooms, nurseries, and for supporting plant health. This manual provides essential information for safe operation, maintenance, and troubleshooting.

Image: The Bear 5L Cool Mist Top Fill Humidifier, showcasing its sleek design in a modern living room environment.
2. Important Safety Instructions
Please read and save these safety instructions before using your humidifier to reduce the risk of fire, electric shock, or injury.
- Always place the humidifier on a firm, flat, waterproof surface at least 12 inches (30 cm) away from walls and appliances.
- Do not place the humidifier directly on carpet, rugs, or absorbent surfaces.
- Keep the humidifier out of reach of children and pets.
- Always unplug the humidifier before filling, cleaning, or moving it.
- Do not operate the humidifier with a damaged cord or plug.
- Use only clean, cool tap water or distilled water. Do not add essential oils directly into the water tank; use the designated essential oil tray.
- Do not block the mist outlet or air intake.
- Never attempt to disassemble or repair the unit yourself. Contact customer support for assistance.
3. Product Overview & Components
Familiarize yourself with the parts of your Bear Humidifier:

Image: An exploded diagram illustrating the various components of the Bear 5L Cool Mist Top Fill Humidifier, including the mist nozzle, water tank cover, 5L tank, water tank cap, filter element assembly, air outlet, floating ball of lever, humidifier base, and dial knob.
- 360° Mist Nozzle: Directs mist in any desired direction.
- Water Tank Cover: Protects the water tank opening.
- 5L Tank: Large capacity water reservoir.
- Water Tank Cap: Secures the water tank.
- Filter Element Assembly: Helps purify water and prevent mineral buildup.
- Air Outlet: Releases humidified air.
- Floating Ball of Lever: Detects water level for auto shut-off.
- Humidifier Base: Contains the ultrasonic transducer and control panel.
- Dial Knob: Controls power and mist output level.
4. Setup
4.1 Placement
- Place the humidifier on a flat, stable, and waterproof surface.
- Ensure it is at least 12 inches (30 cm) away from walls, furniture, and electronic devices.
- Avoid placing it near heat sources or in direct sunlight.
4.2 Filling the Water Tank
- Remove the water tank cover.
- Pour clean, cool water directly into the top opening of the water tank. Pure water or distilled water is strongly advised to minimize mineral deposits.
- Fill up to the maximum fill line indicated on the tank (5L capacity).
- Replace the water tank cover securely.

Image: A hand pouring water into the wide top opening of the humidifier, demonstrating the easy refill process. Another inset shows a hand cleaning the wide opening with a cloth.
5. Operating Instructions
5.1 Power On/Off and Mist Output Adjustment
- Plug the power cord into a suitable electrical outlet.
- Turn the dial knob clockwise from the "OFF" position to turn on the humidifier.
- Continue turning the dial clockwise to increase the mist output from minimum to maximum. Turn counter-clockwise to decrease mist output.
- To turn off the humidifier, turn the dial knob counter-clockwise to the "OFF" position.

Image: A hand adjusting the dial knob to control mist output, and another hand rotating the 360-degree mist nozzle for directional mist.
5.2 360° Rotating Nozzle
The mist nozzle can be rotated 360 degrees to direct the mist in any desired direction, ensuring optimal coverage for your space.
5.3 Essential Oil Tray
To enjoy aromatherapy, locate the built-in essential oil tray on the side of the humidifier. Add a few drops of your favorite essential oil onto the sponge in the tray. Do not add essential oils directly into the water tank or base reservoir.

Image: A close-up view of a hand adding essential oil drops to the dedicated aroma tray of the humidifier.
5.4 Auto Shut-Off Feature
The humidifier is equipped with an automatic shut-off feature that activates when the water level is too low or the tank is removed, ensuring safety and preventing damage to the unit.

Image: The Bear humidifier operating quietly in a bedroom at night, with mist gently rising, illustrating its ultra-quiet operation (less than 28dB).
5.5 Long Lasting Operation
With its 5L water tank, the humidifier can operate for up to 35 hours on a single fill, providing continuous mist without frequent refills.

Image: The humidifier shown operating in both daytime and nighttime settings, emphasizing its ability to provide continuous mist for up to 35 hours.
6. Maintenance
Regular cleaning is crucial for optimal performance and longevity of your humidifier. Using pure or distilled water helps reduce mineral buildup.
6.1 Daily Maintenance
- Unplug the humidifier.
- Empty any remaining water from the tank and base.
- Wipe the tank and base dry with a clean cloth.
6.2 Weekly Cleaning
- Unplug the humidifier and disassemble the water tank from the base.
- Pour 1 cup of white vinegar into the water tank and base. Let it soak for 30 minutes to loosen mineral buildup.
- Use a soft brush or cloth to clean the inside of the tank and the ultrasonic transducer in the base.
- Rinse all components thoroughly with clean water until the smell of vinegar is gone.
- Wipe all surfaces dry before reassembling.

Image: A hand using a soft cloth to clean the interior of the humidifier's water tank, highlighting the ease of access for maintenance.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output | Low water level; Unit not plugged in; Mineral buildup on transducer. | Refill water tank; Ensure power cord is securely plugged in; Clean the ultrasonic transducer. |
| Water leakage | Water tank not properly seated; Damaged water tank. | Ensure water tank is correctly placed on the base; Contact customer support if tank is damaged. |
| Unusual noise | Unit not on a flat surface; Foreign object in water. | Place humidifier on a flat, stable surface; Remove any foreign objects from the water tank or base. |
| White dust around humidifier | Using hard water with high mineral content. | Use distilled or demineralized water. Clean the unit regularly. |
8. Specifications
- Brand: Bear
- Model Name: JSQ-F50D2
- Color: Green-A
- Capacity: 5 Liters (1.32 Gallons)
- Floor Area Coverage: Up to 320 Square Feet (30 m²)
- Runtime: Up to 35 hours
- Operation Mode: Automatic
- Control Method: Touch (Dial Knob)
- Special Features: Adjustable Humidity Control, Auto Shut Off, Quiet Operation (<28dB), Removable Tank, Essential Oil Tray, 360° Mist Nozzle
- Voltage: 120 Volts
- Wattage: 25 watts
- Power Source: Corded Electric
- Filter Type: Carbon
- Item Dimensions (D x W x H): 17.17"D x 11.81"W x 7.68"H
- Item Weight: 1 Pounds
- Material: Plastic
9. Official Product Video
Video: An official product video from Bear US Official Store, showcasing the Bear 5L Ultrasonic Cool Mist Humidifier's features, including its top-fill design, simple controls, adjustable mist output, 360-degree nozzle, filterability, essential oil box, long-lasting operation, and ultra-quiet performance.
10. Warranty & Support
For warranty information or technical support, please refer to the product packaging or contact the Bear US Official Store directly. Keep your purchase receipt for any warranty claims.