1. Introduction
This manual provides instructions for the LINNIW KJ150/SY910 Replacement Air Purifier Filter. It covers compatibility, product features, installation, maintenance, and troubleshooting to ensure optimal performance and longevity of your air purifier filter.
2. Compatibility
This replacement filter is designed for specific air purifier models. Please verify your air purifier model before installation.
2.1 Compatible Models:
- Druiap KJ150 Black+White Air Purifier
- Muliap & Generic KJ910 Air Purifier
- Cwxwei SY910 (AF3001) Air Purifier
2.2 Incompatible Models:
- Druiap KJ80 Model Air Purifier
- SilverOnyx KJ150F-C02 Air Purifier

Figure 1: Visual guide for compatible and incompatible air purifier models.

Figure 2: Comprehensive compatibility overview for various air purifier models.
3. Product Features
The LINNIW KJ150/SY910 replacement filter features a 3-stage filtration system designed to improve air quality.
3.1 3-Stage Filtration System:
- Pre-Filter: Captures large airborne particles such as dust, lint, fibers, hair, and pet fur. This initial layer helps extend the lifespan of the subsequent filters.
- HEPA Filter: Filters 99.97% of airborne particles as small as 0.3 microns, including fine dust, pollen, smoke, and pet dander.
- Activated Carbon Filter: Efficiently absorbs various household odors and fumes from sources like pets, cooking, smoke, wildfire, and Volatile Organic Compounds (VOCs).

Figure 3: Overview of the efficient 3-stage filtration system.

Figure 4: HEPA filter and 360° air intake system capturing various pollutants.

Figure 5: Detail of the upgraded activated carbon filter for odor absorption.

Figure 6: Air purification process through the 3-stage filtration system.

Figure 7: Function of the Pre-Filter layer.

Figure 8: Function of the HEPA Filter layer.

Figure 9: Function of the Activated Carbon Filter layer.
4. Installation (Filter Replacement)
Replacing the LINNIW KJ150/SY910 air filter is a straightforward process that requires no special tools.
Step-by-Step Guide:
- Power Off: Ensure your air purifier is turned off and unplugged from the power outlet before proceeding.
- Locate Filter Compartment: Identify the filter compartment on your air purifier. This is typically located at the bottom or back of the unit.
- Remove Old Filter: Open the compartment cover and carefully remove the used filter.
- Dispose: Dispose of the old filter according to local waste disposal guidelines.
- Unpack New Filter: Remove the new LINNIW KJ150/SY910 filter from its protective packaging.
- Insert New Filter: Place the new filter into the compartment, ensuring it is oriented correctly. Refer to your air purifier's manual for specific orientation instructions if needed.
- Close Compartment: Securely close the filter compartment cover. Ensure it clicks into place if applicable, as some purifiers have safety mechanisms that prevent operation if the cover is not fully closed.
- Power On: Plug the air purifier back into the power outlet and turn it on.
- Reset Filter Indicator: If your air purifier has a filter life indicator, follow its specific instructions to reset it after replacement.
5. Operation
Once the new LINNIW KJ150/SY910 filter is correctly installed, operate your air purifier according to its manufacturer's instructions. The filter will continuously work to purify the air by capturing particles and absorbing odors, contributing to a cleaner indoor environment.

Figure 10: Air purifier in operation with a new filter.
6. Maintenance
Regular filter replacement is crucial for maintaining the efficiency of your air purifier and ensuring consistent air quality.
6.1 Recommended Replacement Schedule:
For optimal air purification performance, it is recommended to replace the LINNIW KJ150/SY910 air purifier filter every 3-6 months. This duration may vary based on:
- Usage Frequency: Continuous operation may require more frequent replacement.
- Environmental Air Quality: Environments with higher levels of pollutants (e.g., pet dander, smoke, dust) may necessitate earlier replacement.

Figure 11: Comparison of new and used filters, highlighting the replacement recommendation.
7. Troubleshooting
If you encounter issues after replacing your filter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Filter does not fit | Incorrect model filter or improper orientation. | Verify your air purifier model against the compatibility list. Ensure the filter is inserted with the correct orientation. |
| Reduced air quality after replacement | Filter compartment not securely closed or air purifier settings incorrect. | Ensure the filter compartment is fully closed. Check your air purifier's settings to ensure it is operating correctly. |
| Unusual odors from air purifier | New filter absorbing strong odors, or filter damage. | Allow a few hours for the new filter to acclimate. If odors persist, re-install the filter or inspect it for any damage. |
| Air purifier not turning on | Filter compartment not fully closed (safety switch). | Ensure the filter compartment is completely closed. Check the power connection to the air purifier. |
8. Specifications
Key specifications for the LINNIW KJ150/SY910 Replacement Air Purifier Filter:
| Attribute | Detail |
|---|---|
| Brand | LINNIW |
| Model Number | KJ150 |
| Item Weight | 1.23 pounds (approx. 0.56 kg) |
| Product Dimensions | 5.79 x 5.9 x 5.9 inches (approx. 14.7 x 15 x 15 cm) |
| Material Type | Paper |
| MERV Rating | 13 |
| Compatible Devices | Druiap KJ150, Muliap & Generic KJ910, Cwxwei SY910 (AF3001) Air Purifiers |
| Filtration Stages | 3-Stage (Pre-filter, HEPA filter, Activated Carbon filter) |
9. Warranty Information
Warranty information for the LINNIW KJ150/SY910 Replacement Air Purifier Filter is not provided within this manual. For details regarding product warranty, please refer to the manufacturer's official website or contact LINNIW customer support directly.
10. Customer Support
For any questions, concerns, or assistance regarding your LINNIW KJ150/SY910 replacement filter, please contact LINNIW customer service. Refer to the contact information provided on the product packaging or the official LINNIW website for the most current support options.
11. Environmental Considerations
This product is recognized for its environmentally conscious design through the Climate Pledge Friendly program.

Figure 12: Climate Pledge Friendly certification.
11.1 Compact by Design:
Products with the 'Compact by Design' certification are designed to reduce carbon emissions through more efficient packaging. This includes features such as:
- Less packaging material.
- Reduced air in containers.
- More efficient product shapes.

Less Packaging

Less Air in Container

More Efficient Shape