1. Product Overview
This document provides instructions for the Kinetico Reverse Osmosis Membrane, Part No. 9428. This membrane is a replacement component for Kinetico K2 and A200 Aqua-Kinetic water filtration systems. It is designed to remove impurities from water, ensuring high-quality filtered water for your household.

Image: Kinetico Reverse Osmosis Membrane, Part No. 9428. This black cylindrical filter features the Kinetico logo and product details on its label.
2. Specifications
| Material | Thin Film Composite (TFC) / Cellulose Acetate (CA) |
| Product Dimensions | 3"D x 3"W x 13.5"H |
| Item Weight | 1.65 Pounds |
| Product Benefits | Removes impurities from water |
| Set Name | Kinetico K2 and A200 Aquakinetic system |
| Unit Count | 1.0 Count |
| Number of Items | 1 |
| Item Model Number | 9428 |
3. Maintenance and Replacement
General Maintenance
The Kinetico Reverse Osmosis Membrane (Part No. 9428) should be replaced approximately every 12 months. This timeframe can vary based on local water quality and household usage. Regular replacement ensures the continued optimal performance of your Kinetico K2 or A200 Aqua-Kinetic system and consistent delivery of high-quality filtered water.
Replacement Procedure
Follow these steps to replace your Kinetico Reverse Osmosis Membrane:
- Turn off Water Supply: Locate and turn off the cold water supply valve to your Kinetico system. This valve is typically situated behind or near the filter unit.
- Release Pressure: Open the filtered water faucet to release any residual water pressure from the system lines. Allow the water to drain completely.
- Prepare for Spills: Place a towel or absorbent material directly beneath the filter unit to catch any water that may drip during the cartridge removal.
- Remove Old Cartridge: Identify the membrane cartridge (Part No. 9428). Gently twist the old cartridge counter-clockwise to unlock it, then pull it downwards and out of the system.
- Drain Old Cartridge: Invert the removed cartridge over a sink to drain any remaining water inside.
- Unpack New Cartridge: Carefully unwrap the new Kinetico Reverse Osmosis Membrane (Part No. 9428) from its packaging.
- Install New Cartridge: Align the top of the new cartridge with the corresponding slot in the filter system. Push it upwards firmly and then twist it clockwise until it is securely locked into place. You should feel or hear a click.
- Restore Water Supply: Turn the cold water supply valve back on.
- Flush System: Open the filtered water faucet again to allow the system to fill with water and flush out any trapped air. Let the water run for a few minutes to ensure proper flow and to clear any initial carbon fines. Check for any leaks around the newly installed cartridge.
4. Troubleshooting
Common Issues and Solutions
- Reduced Water Flow: If you notice a significant decrease in the flow rate of your filtered water, it often indicates that the membrane or other pre-filters are becoming clogged. This is a primary sign that the membrane requires replacement.
- Unpleasant Taste or Odor: A change in the taste or odor of your filtered water suggests that the filtration media, including the reverse osmosis membrane, is exhausted and no longer effectively removing impurities. Replace the membrane as soon as possible.
- Leaks: If leaks occur after installation, first ensure that all cartridges, especially the newly installed membrane, are properly seated and twisted clockwise until they are firmly secure. Check the O-rings on the cartridge for any damage or improper placement during installation.
5. Warranty and Support
For detailed warranty information regarding your Kinetico Reverse Osmosis Membrane or your Kinetico K2/A200 Aqua-Kinetic system, please refer to the original documentation provided with your complete water filtration system. The EU Spare Part Availability Duration for this product is 1 year.
For technical support, troubleshooting assistance, or to inquire about replacement parts, please contact Kinetico customer service directly through their official website or the contact information provided in your system's manual.