1. Introduction
Thank you for choosing the Cegsin AP005C-B Air Purifier. This manual provides important information regarding the safe operation, installation, maintenance, and troubleshooting of your new air purifier. Please read this manual thoroughly before use and keep it for future reference.
2. Safety Instructions
- Always place the air purifier on a firm, level surface.
- Keep the appliance away from water or other liquids.
- Do not block air inlets or outlets.
- Unplug the air purifier before cleaning or performing any maintenance.
- Do not operate the appliance with a damaged cord or plug.
- This appliance is for indoor use only.
- Keep out of reach of children and pets.
3. Product Overview
The Cegsin AP005C-B Air Purifier is designed to improve indoor air quality by filtering various airborne particles. It features a multi-stage filtration system and user-friendly controls.
Key Features:
- 3-in-1 HEPA Filtration: Captures 99.97% of particles as small as 0.3 microns, including odors, smoke, pollen, dander, and hair.
- 360-Degree Air Intake: Ensures efficient air circulation throughout the room.
- Quiet Operation: Features a dedicated sleep mode with a low noise level of 25 dB.
- Aromatherapy Function: Includes a dedicated box for essential oils to enhance your environment.
- Timer Function: Set the purifier to operate for up to 12 hours.
- Child Lock: Prevents accidental changes to settings.
Filtration System:

Image: Illustration of the 3-stage filtration process. Air enters, passes through a pre-filter, then an efficient HEPA filter, and finally an activated carbon filter, removing hair, dander, dust, pollen, VOCs, and smoke.
- Pre-filter: Captures large particles like dust, lint, fibers, and pet hair.
- True HEPA Filter: Traps 99.97% of airborne particles 0.3 microns in size, such as pollen, dust mites, and pet dander.
- Activated Carbon Filter: Absorbs odors from cooking, pets, smoke, and harmful VOCs.
4. Setup
4.1 Unpacking and Filter Installation
Before first use, remove all packaging materials and ensure the filter is properly installed.
- Flip the machine over and twist to remove the bottom cover.
- Remove the plastic packaging from the filter.
- Insert the filter back into the unit, ensuring it is seated correctly.
- Replace the bottom cover and twist to secure it.

Image: Four-step diagram showing how to remove the bottom cover, take out the filter, remove its packaging, insert the new filter, and replace the cover.
4.2 Placement
Place the air purifier on a flat, stable surface. Ensure there is at least 15 cm (6 inches) of space around all sides for optimal air circulation. The unit is compact (17 x 17 x 28.5 cm) and suitable for desktops, bedrooms, and living areas.

Image: Side view of the air purifier with dimensions indicated as 11.22 inches (height) and 6.7 inches (width/depth).
5. Operating Instructions
The air purifier features a touch control panel on the top for easy operation.
5.1 Power On/Off
- Plug the power cord into an AC outlet.
- Touch the Power Button to turn the unit on or off.
5.2 Fan Speed Adjustment
- Touch the Fan Speed Button to cycle through 3 fan speeds (Low, Medium, High).
- The air purifier can clean the air 5 times per hour in a 23.2m² (250 sq ft) room and is effective for areas up to 102m².

Image: An air purifier in a room showing 360-degree air circulation, indicating it purifies the air 5 times per hour in a 250 sq ft area.
5.3 Sleep Mode
- Touch the Sleep Mode Button to activate a quiet operation mode (25 dB).
- In sleep mode, display lights dim or turn off to ensure an undisturbed environment.

Image: An air purifier operating quietly in a bedroom while people sleep, highlighting its low noise level (22dB in sleep mode) and features like low noise, night light, and 12H timer.
5.4 Timer Function
- Touch the Timer Button to set the operating time for 2, 4, 8, or 12 hours. The unit will automatically turn off after the set time.
5.5 Child Lock
- To activate the child lock, long press the Child Lock button for 3 seconds. This prevents accidental changes to settings.
- Long press the button again for 3 seconds to deactivate the child lock.

Image: A child and a dog near the air purifier, with a graphic overlay indicating the child lock feature and instructions to long press for 3 seconds to turn it on/off.
5.6 Aromatherapy Function
- Locate the aroma box on the side of the air purifier.
- Pull out the aroma box. Add a few drops of your favorite essential oil onto the aroma pad.
- Slide the aroma box back into the unit. The fan will diffuse the scent into the air.

Image: A hand adding essential oil drops into a small tray on the side of the air purifier, demonstrating the aromatherapy feature.
6. Maintenance
6.1 Filter Replacement
The filter should be replaced every 3-6 months, depending on usage and air quality. A filter indicator light on the control panel will illuminate when it's time to replace the filter.
- Unplug the air purifier.
- Flip the machine over and twist to remove the bottom cover.
- Remove the old filter and dispose of it properly.
- Insert a new, original replacement filter (Model: AP005C-B Filter) into the unit.
- Replace the bottom cover and twist to secure it.
- Plug in the air purifier. To reset the filter indicator, long press the Filter Reset Button (if available, or Power button for 5 seconds) until the light turns off.
6.2 Cleaning
- Always unplug the unit before cleaning.
- Wipe the exterior of the air purifier with a soft, dry cloth.
- Do not use abrasive cleaners or solvents.
- Clean the air inlet and outlet vents with a soft brush or vacuum cleaner to remove dust.
7. Troubleshooting
If you encounter any issues, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on | Not plugged in; Power outage; Child lock activated | Ensure power cord is securely plugged in; Check power supply; Deactivate child lock (long press button for 3s) |
| Reduced airflow or poor purification | Filter is dirty or clogged; Air inlets/outlets blocked | Replace the filter; Clear any obstructions from vents |
| Unusual noise | Foreign object inside; Unit not on a level surface; Filter not installed correctly | Unplug and check for foreign objects; Place on a stable surface; Reinstall filter correctly |
| Odor persists | Filter needs replacement; Strong odor source | Replace the filter; Remove or address the odor source |
If the problem persists after trying these solutions, please contact customer support.
8. Specifications
| Specification | Detail |
|---|---|
| Model | AP005C-B |
| Brand | Cegsin |
| Color | Black |
| Product Dimensions (D x W x H) | 17 cm x 17 cm x 28.5 cm (6.7 in x 6.7 in x 11.22 in) |
| Item Weight | 1.46 kg (3.22 lbs) |
| Power Source | AC |
| Control Method | Touch |
| Filter Type | HEPA (3-in-1) |
| Effective Coverage Area | Up to 23.2 m² (250 sq ft), purifies 5 times/hour; effective for larger areas up to 102 m² |
| Noise Level | 25 dB (in Sleep Mode) |
| Compliance | Certified by Environmental Technology Lab |
9. Warranty and Support
The Cegsin AP005C-B Air Purifier comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms and conditions.
For technical support, replacement parts, or any inquiries, please contact Cegsin customer service through the retailer where you purchased the product or visit our official website.