1. Introduction
Thank you for choosing the Mellif High Volume Compressed Air Duster. This powerful, battery-powered tool is designed for efficient cleaning and inflation/deflation tasks. Equipped with a brushless motor and multiple speed settings, it provides versatile performance for various applications. Please read this manual thoroughly before use to ensure safe and optimal operation.
2. Safety Information
- Always wear appropriate personal protective equipment, such as safety glasses, when operating the air duster.
- Ensure the battery is securely attached before operation and removed when not in use or during maintenance.
- Do not point the air duster at people or animals.
- Keep hands, hair, and loose clothing away from the air inlet and outlet during operation.
- Do not operate in wet conditions or near flammable liquids or gases.
- This product is not for commercial use.
- Store the tool in a dry, secure place out of reach of children.
3. Package Contents
Please check the box for the following items:
- 1 x High Volume Air Dust Blower (Battery NOT included)
- 1 x Air Vent Hose
- 5 x Nozzles (various shapes and sizes)
- 1 x Flexible Nozzle
- 1 x User Manual

Figure 1: Mellif Air Duster and included accessories.
4. Product Overview
Familiarize yourself with the components of your Mellif Air Duster:

Figure 2: Key components of the Mellif Air Duster.
- Hanging Hole: For convenient storage.
- Dust Cap: Protects the motor from debris.
- Work Light: Illuminates dark areas for precise cleaning.
- Trigger-Lock Button: Engages continuous operation.
- Switch Trigger: Activates the air duster.
- Lock Button: Secures the trigger for continuous use.
- Adjusting Air Volume: Controls the airflow speed.
5. Setup
5.1 Attaching Nozzles and Hoses
- Select the appropriate nozzle or air vent hose for your task.
- Align the nozzle/hose with the air outlet on the front of the duster.
- Push firmly until it clicks into place. Ensure it is securely attached before use.
5.2 Battery Installation
The Mellif Air Duster is compatible with 18V/20V Max Dewalt, Makita 18V, and Milwaukee 18V batteries. (Battery not included).
- Ensure the air duster is turned off before installing or removing the battery.
- Slide a compatible battery into the battery slot at the base of the tool until it locks into place.
- To remove, press the battery release button (if present on your battery model) and slide the battery out.



6. Operating Instructions
6.1 Basic Operation
- Ensure a charged battery is installed and a nozzle is attached.
- Press the Switch Trigger to activate the air duster. The built-in LED work light will illuminate automatically.
- To maintain continuous operation, press the Lock Button while holding the Switch Trigger. Release the Lock Button to stop continuous operation.
- Adjust the air volume/speed using the Adjusting Air Volume control.
6.2 Speed Control
The air duster features a 3-speed brushless motor:
- 1st Gear: 18000 RPM (for delicate tasks)
- 2nd Gear: 35000 RPM (for general cleaning)
- 3rd Gear: 50000 RPM (for maximum power and stubborn debris)

Figure 3: Three-speed control for varied tasks.
6.3 Using the LED Work Light
The integrated LED work light automatically turns on when the duster is activated, providing illumination for cleaning in dark or poorly lit areas, such as inside computer cases.

Figure 4: LED work light for dark corners.
6.4 Multi-Purpose Applications
The Mellif Air Duster is a versatile 4-in-1 tool:
- Powerful Cleaner: Use various nozzles to remove dust and debris from electronics, keyboards, desktops, window crevices, and fans.
- Inflator: Attach the pinch valve nozzle to inflate items like swimming rings, air mattresses, and other inflatable tools.
- Deflator: Use the air vent hose for fast deflating of air mattresses and similar items.
- Mini Desktop Vacuum: The air vent hose can also be used for light vacuuming tasks.

Figure 5: Versatile applications of the air duster.

Figure 6: Fast deflating and dust collection capabilities.
Video 1: Demonstration of the Mellif Air Duster cleaning a dusty air filter.
7. Maintenance
- Cleaning: After each use, wipe the exterior of the air duster with a clean, dry cloth.
- Nozzles and Hoses: Clean any debris from the nozzles and hoses to ensure optimal airflow.
- Storage: Store the air duster and its accessories in a dry place, away from direct sunlight and extreme temperatures.
- Battery Care: Follow the battery manufacturer's instructions for charging, storage, and maintenance.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Duster does not turn on | Battery not installed correctly or discharged. | Ensure battery is fully charged and properly inserted. |
| Weak airflow | Nozzle/hose blocked or incorrect speed setting. | Check for obstructions in nozzles/hoses. Increase speed setting. |
| Nozzle falls off during use | Nozzle not securely attached. | Ensure nozzle is firmly pushed onto the air outlet until it clicks. |
9. Specifications
| Feature | Specification |
|---|---|
| Power Source | Battery Powered (18V/20V compatible) |
| Motor Type | Brushless Motor |
| Max RPM | 50,000 RPM |
| Max Airflow | 150 m/s |
| Speed Settings | 3 (18000 RPM, 35000 RPM, 50000 RPM) |
| Weight (without battery) | 1.4 lbs (approx. 635g) |
| Dimensions (approx.) | 6.69 x 3.62 x 9.25 inches (17 x 9.2 x 23.5 cm) |
| Certification | CE |
| Special Features | Integrated LED Work Light |
10. User Tips
- For optimal performance, ensure your battery is fully charged before extended use.
- The Mellif Air Duster is compatible with Milwaukee M18 batteries, in addition to Dewalt 18V/20V and Makita 18V.
- Experiment with different nozzles and speed settings to find the most effective combination for each cleaning or inflation task.
- When cleaning delicate electronics, start with the lowest speed setting to avoid damage.
11. Warranty and Support
Your Mellif High Volume Compressed Air Duster comes with a 5-year warranty. Please retain your proof of purchase for warranty claims. For any technical support or service inquiries, please contact Mellif customer service through your retailer or the official Mellif website.

Figure 7: 5-Year Warranty information.