1. Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Qcwwy Desktop Range Hood, Model Qcwwysa70mby8up-11. Please read this manual thoroughly before using the product and retain it for future reference.
2. Safety Information
To ensure safe operation, always adhere to the following precautions:
- Do not immerse the unit in water or other liquids.
- Keep the appliance away from heat sources and direct sunlight.
- Ensure the power supply voltage matches the specifications (5V USB).
- Do not block the air inlet or outlet during operation.
- Unplug the device before cleaning or performing any maintenance.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
- Children should be supervised to ensure that they do not play with the appliance.
3. Package Contents
Carefully unpack the box and ensure all items are present and in good condition. If any items are missing or damaged, please contact customer support.
- 1 x Desktop Range Hood Unit
- 1 x Oil Filter
- 1 x Smoke Filter
- 1 x Drip Cup
- 1 x USB Cable
- 1 x Base
- 1 x User Manual

4. Product Overview
The Qcwwy Desktop Range Hood is a compact, USB-powered extractor designed for small spaces. It features a two-speed fan and a negative ion function to help manage cooking fumes and odors.

Key Features:
- Removable Oil Storage Cup: Located at the base, this cup collects oil and can be adjusted to enhance the product's height for different stove setups.
- 2-Speed Operation: Features a one-button start with two speed settings for fan operation.
- Negative Ion Switch: Activates negative ion generation to help reduce smoke and odors.
- Removable Filter: Easy-to-clean filter for effective absorption of grease, smoke, and water vapor.
- Compact and Portable Design: Lightweight and small, suitable for various indoor environments.
5. Setup
- Assemble the Base: Place the main range hood unit onto the base. Ensure it is securely seated. The removable oil storage cup should be inserted into the base first, then the main unit placed on top, allowing for height adjustment.
- Install Filters: Insert the oil filter and smoke filter into their designated slots within the range hood unit. Ensure they are properly aligned for effective filtration.
- Position the Unit: Place the desktop range hood near your cooking area. Adjust the height of the unit by manipulating the oil storage cup and main body to best suit your stove or cooking vessel.
- Connect Power: Connect the provided USB cable to the range hood's power input and plug the other end into a compatible 5V USB power source (e.g., a USB wall adapter, power bank, or computer USB port).

6. Operating Instructions
- Power On: Press the power button (usually indicated by a power symbol or a single button on the unit) to turn on the range hood. It will typically start at the first speed setting.
- Adjust Fan Speed: Press the power button again to switch to the second, higher speed setting. Pressing it a third time will turn the unit off.
- Activate Negative Ion Function: Locate the negative ion switch (if separate from the power button) and press it to activate the negative ion generation. This function helps to purify the air and reduce odors. Press again to deactivate.
- Positioning for Effectiveness: For optimal performance, position the range hood directly above or very close to the source of fumes.
- Power Off: When cooking is complete, press the power button until the unit turns off.

7. Maintenance
Regular maintenance ensures the longevity and efficient operation of your range hood.
7.1 Cleaning the Oil Storage Cup
- Unplug the range hood from its power source.
- Carefully remove the main unit from the base.
- Detach the oil storage cup from the base.
- Empty any collected oil and wash the cup with warm, soapy water. Rinse thoroughly and dry completely before reassembling.
7.2 Cleaning/Replacing Filters
- Unplug the range hood.
- Remove the filters from the unit.
- The mesh filter can be washed with warm, soapy water. Rinse and dry completely.
- The smoke filter may need to be replaced periodically depending on usage. Refer to product packaging or manufacturer's website for replacement filters.
- Reinsert clean or new filters into the unit, ensuring they are properly seated.
7.3 Cleaning the Exterior
- Wipe the exterior of the range hood with a soft, damp cloth.
- Do not use abrasive cleaners or solvents, as these can damage the finish.
- Ensure the unit is completely dry before plugging it back in.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | No power supply or loose connection. | Ensure the USB cable is securely connected to both the unit and a working 5V USB power source. Try a different USB port or adapter. |
| Fan is weak or not extracting smoke effectively. | Filters are clogged; unit is too far from cooking source; fan speed is too low. | Clean or replace the filters. Reposition the unit closer to the cooking area. Increase the fan speed to the higher setting. |
| Unusual noise during operation. | Obstruction in the fan; unit not stable. | Unplug the unit and check for any foreign objects obstructing the fan blades. Ensure the unit is placed on a stable, flat surface. |
| Negative ion function not working. | Negative ion switch not activated. | Press the negative ion switch to activate the function. If still not working, contact customer support. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | Qcwwy |
| Model Number | Qcwwysa70mby8up-11 |
| Power | 8W |
| Voltage | 5V |
| Gear Speeds | 2 |
| Power Supply | USB Powered |
| Weight | Approx. 992g (34.99 oz) |
| Product Dimensions (D x W x H) | 11.81" x 9.05" x 6.69" |
| Material | ABS |
| Noise Level | 1 Decibel (dB) |
| Air Flow Capacity | 1 Cubic Feet Per Minute (CFM) |
| Controls Type | Push Button |
| Filter Type | Mesh |
| Ventilation Type | Ductless/Recirculating |

10. Warranty and Support
No specific warranty information is provided in the product details. For warranty claims, technical support, or replacement parts, please contact the retailer or manufacturer directly using the contact information provided at the point of purchase or on the product packaging.
Please retain your proof of purchase for any warranty-related inquiries.