1. Introduction
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your Cegsin Air Purifier Model AP005C. Please read this manual thoroughly before using the appliance and retain it for future reference.

Image 1: The Cegsin AP005C Air Purifier, a compact device designed for air purification.
2. Product Overview
2.1 Key Features
- 3-in-1 HEPA Filtration: Effectively captures 99.97% of airborne particles as small as 0.3 microns, including dust, pollen, pet dander, smoke, and odors.
- Rapid Air Circulation: Features a 3-speed fan and 360-degree air intake, refreshing air up to 5 times per hour in rooms up to 250 sq ft, and steadily purifying spaces up to 1100 sq ft.
- Quiet Operation: Operates at a low noise level, with a dedicated Sleep Mode reducing sound to 22dB.
- Integrated Timer: Programmable timer for 2, 4, 6, 8, 10, or 12 hours of continuous operation.
- Night Light Function: Provides a soft ambient light.
- Aromatherapy Box: Allows for the addition of essential oils to diffuse scents into the purified air.
- Safety Lock: Prevents unintended changes to settings, ideal for households with children or pets.
2.2 Filtration System
The AP005C utilizes a multi-stage filtration system to ensure comprehensive air purification:
- Pre-filter: Captures larger particles such as dust, lint, and pet hair.
- Efficient HEPA Filter: Traps fine particles like pollen, dust mites, and pet dander.
- Activated Carbon Filter: Absorbs odors, smoke, and volatile organic compounds (VOCs).

Image 2: Diagram illustrating the three stages of the air filtration process, showing how different particles are captured.
3. Setup
3.1 Unpacking
Carefully remove the air purifier from its packaging. Ensure all packing materials are removed from the unit and its components.
3.2 Filter Installation
The filter comes pre-installed but is sealed in plastic packaging. This packaging must be removed before first use.
- Disconnect Power: Ensure the air purifier is unplugged from the power outlet.
- Access Filter Compartment: Flip the machine over and twist the bottom cover counter-clockwise to unlock and remove it.
- Remove Packaging: Take out the filter and remove its plastic packaging.
- Reinstall Filter: Place the unwrapped filter back into the air purifier, ensuring it is seated correctly.
- Secure Cover: Replace the bottom cover and twist clockwise to lock it into place.

Image 3: A visual guide demonstrating the steps to install or replace the air filter, including removing the cover and unwrapping the new filter.
3.3 Placement
Place the air purifier on a flat, stable surface. Ensure there is at least 15 inches of clear space around the unit for optimal air intake and circulation.
4. Operating Instructions
After proper setup, plug the air purifier into a standard electrical outlet. The control panel is located on the top of the unit.

Image 4: A detailed view of the control panel on the top of the air purifier, showing various touch-sensitive buttons for operation.
4.1 Power On/Off
- Press the Power Button (symbol: circle with vertical line) to turn the unit on or off.
4.2 Fan Speed Adjustment
- Press the Fan Speed Button (symbol: fan blades) repeatedly to cycle through three fan speed settings: Low, Medium, and High.
4.3 Sleep Mode
- Press the Sleep Mode Button (symbol: crescent moon) to activate Sleep Mode. In this mode, the fan operates at its lowest speed (22dB), and all indicator lights are dimmed or turned off for minimal disturbance. Press again to exit Sleep Mode.

Image 5: The air purifier operating in a bedroom, demonstrating its quiet performance during sleep mode.
4.4 Timer Function
- Press the Timer Button (symbol: clock) repeatedly to set the desired operating duration: 2, 4, 6, 8, 10, or 12 hours. The unit will automatically turn off once the set time expires.
4.5 Night Light Control
- Press the Light Button (symbol: light bulb) to turn the night light on or off.
4.6 Aromatherapy Function
- Locate the aroma box on the side of the unit. Open the box and add a few drops of your preferred essential oil onto the aroma pad. Close the box. The purified air will then carry the scent.

Image 6: A hand carefully adding essential oil into the designated aroma box on the side of the air purifier.
4.7 Safety Lock (Child Lock)
- To activate the Safety Lock, press and hold the Lock Button (symbol: padlock) for 3 seconds. This will disable all other control panel functions.
- To deactivate, press and hold the Lock Button again for 3 seconds.

Image 7: A child and a dog are shown near the air purifier, illustrating the benefit of the child lock feature to prevent accidental operation.
5. Maintenance
5.1 Filter Replacement
For optimal performance, the 3-in-1 HEPA filter should be replaced every 3-6 months, depending on usage and air quality. Only use genuine Cegsin replacement filters.
- Disconnect Power: Unplug the air purifier from the power outlet.
- Access Filter: Flip the machine over and twist the bottom cover counter-clockwise to remove it.
- Remove Old Filter: Carefully lift out the used filter. Dispose of it properly.
- Install New Filter: Remove the plastic packaging from the new filter. Place the new filter into the unit, ensuring it fits securely.
- Secure Cover: Replace the bottom cover and twist clockwise to lock it.
5.2 Cleaning the Exterior
Wipe the exterior of the air purifier with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the unit is unplugged before cleaning.
5.3 Aroma Pad Maintenance
Periodically clean or replace the aroma pad in the aroma box to prevent oil buildup and maintain scent diffusion effectiveness.
6. Troubleshooting
If you encounter issues with your air purifier, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on | Not plugged in; Power outage; Filter packaging not removed. | Ensure power cord is securely plugged in; Check power supply; Verify filter packaging is removed (see Section 3.2). |
| Poor air purification | Filter is dirty or expired; Unit placed in an obstructed area. | Replace the filter (see Section 5.1); Ensure adequate space around the unit (see Section 3.3). |
| Unusual noise | Filter not installed correctly; Foreign object inside. | Reinstall filter securely; Disconnect power and check for obstructions. |
| Aromatherapy not working | Aroma pad is dry or saturated; Aroma box is closed improperly. | Add more essential oil or replace aroma pad; Ensure aroma box is securely closed. |
If the problem persists after attempting these solutions, please contact customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | AP005C |
| Product Dimensions | 6.7"D x 6.7"W x 11.22"H (17 x 17 x 28.5 cm) |
| Item Weight | 2.65 Pounds (1.2 kg) |
| Rated Power | 10 Watts |
| Coverage Area | Up to 250 sq ft (5x air changes/hour); Up to 1100 sq ft (steady purification) |
| Noise Level | As low as 22dB (Sleep Mode) |
| Filter Type | 3-in-1 HEPA Filter (Pre-filter, HEPA, Activated Carbon) |
| Certifications | CARB Certified, DOE Certified, ETL Certified, FCC Certified |
8. Warranty and Support
8.1 Warranty Information
This product is covered by a manufacturer's warranty. Please refer to the warranty card included with your purchase or contact customer support for specific details regarding warranty terms and conditions.
8.2 Customer Support
For any questions, technical assistance, or warranty claims, please contact Cegsin customer support. Contact information can typically be found on the product packaging or the official Cegsin website.