Introduction
This manual provides essential information for the proper installation and maintenance of your Improvedhand BS-03 HEPA Filter Replacement. Adhering to these instructions will help ensure optimal performance and longevity of your air purifier filter.
Product Overview
The Improvedhand BS-03 filter is a 3-in-1 filtration system designed to enhance air quality. It integrates three distinct filtration stages into a single unit:
- Washable Pre-filter: Captures larger particles such as dust, lint, and pet dander, extending the life of subsequent filters.
- H13 True HEPA Filter: Removes up to 99.97% of airborne particles as small as 0.3 microns, including pollen, mold spores, and fine dust.
- Activated Carbon Filter: Utilizes carbon column material for strong adsorption of unpleasant odors, including cooking fumes, smoke, pet odors, and volatile organic compounds (VOCs).

Image: The BS-03 filter effectively captures various airborne particles and odors, as shown by the arrows indicating air intake and clean air output.

Image: Detailed view of the three distinct filtration layers within the BS-03 filter.

1. Fine Preliminary Filter

2. True HEPA Filter

3. Activated Carbon Filter
Compatibility
The Improvedhand BS-03 HEPA Filter Replacement is specifically designed for use with PARTU Air Purifier models Part U and Part X. This filter is not an OEM product but is manufactured to be fully compatible with the specified PARTU air purifiers.

Image: The BS-03 filter is compatible with the PARTU Home Air Purifier.
Installation (Filter Replacement)
Follow these general steps to replace the filter in your PARTU Air Purifier. Refer to your specific PARTU Air Purifier manual for detailed instructions if available.
- Power Off: Before attempting any filter replacement, ensure your air purifier is powered off and unplugged from the electrical outlet.
- Access Filter Compartment: Locate and open the filter compartment on your PARTU Air Purifier. This usually involves twisting or unlatching a cover at the bottom or back of the unit.
- Remove Old Filter: Carefully remove the used filter. Dispose of the old filter according to local regulations.
- Insert New Filter: Place the new Improvedhand BS-03 filter into the compartment. Ensure it is seated correctly and securely.
- Close Compartment: Close and secure the filter compartment cover.
- Reset Filter Indicator (if applicable): Plug in and power on your air purifier. If your unit has a filter replacement indicator, follow its instructions to reset it.
WARNING: Always power off and unplug the air purifier before replacing the filter to prevent electric shock or injury.
Operation
The Improvedhand BS-03 filter operates passively within your PARTU Air Purifier. Once installed, the air purifier's fan draws air through the filter, where it undergoes the multi-stage purification process. No direct user interaction with the filter is required during operation.
Maintenance
Regular filter replacement is crucial for maintaining the efficiency and performance of your air purifier.
- Replacement Frequency: It is recommended to replace the Improvedhand BS-03 air purifier filter every 3-6 months. Actual replacement time may vary depending on air quality, usage frequency, and environmental factors.
- Visual Inspection: Periodically inspect the filter for visible signs of dirt and debris accumulation. A heavily soiled filter indicates it's time for replacement.

Image: Dimensions of the Improvedhand BS-03 filter.
Troubleshooting
If you encounter issues after replacing your filter, consider the following:
- Filter Not Fitting: Double-check that you have the correct filter model (BS-03) for your specific PARTU Air Purifier (Part U or Part X). Ensure the filter is oriented correctly according to your air purifier's instructions.
- Reduced Airflow/Performance: If airflow seems reduced or air quality does not improve after replacement, verify the filter is installed correctly and the air purifier's compartment is fully sealed. Ensure the filter indicator (if present) has been reset.
- Unusual Noises: Ensure the filter is securely seated and not obstructing any moving parts within the air purifier.
If problems persist, refer to your PARTU Air Purifier's user manual or contact Improvedhand customer support.
Specifications
| Feature | Specification |
|---|---|
| Brand | Improvedhand |
| Model Number | BS-03 (Part Number: BS-03-2) |
| Compatible Air Purifiers | PARTU Air Purifier Part U, PARTU Air Purifier Part X |
| Filtration Type | 3-in-1 (Pre-filter, H13 True HEPA, Activated Carbon) |
| HEPA Grade | H13 |
| MERV Rating | 17 |
| Product Dimensions (L x W x H) | 5.2" x 5.2" x 3.3" |
| Item Weight | 10.2 ounces |
| Included Components | 2 Pack BS-03 Air Purifier Replacement Filters |
| UPC | 746939984379 |
Warranty
Specific warranty details for the Improvedhand BS-03 filter replacement are not provided in this manual. For information regarding product warranty, please contact Improvedhand customer support directly.
Support
For any questions, concerns, or assistance with your Improvedhand BS-03 HEPA Filter Replacement, please contact Improvedhand customer support. We are committed to resolving any issues that may arise.
Contact information can typically be found on the product packaging or the official Improvedhand website.