When using a 5-micron PP cotton composite filter cartridge in areas with high water hardness, it should be installed after the main water meter and before other water-related appliances, ensuring the correct orientation and a sealed connection. You've considered this very carefully, especially considering that the installation quality of the pre-filter directly affects the overall water purification effect and the lifespan of water-related appliances in high-hardness water environments. This attention to detail is commendable.
Installation Location: Safeguarding the First Line of Defense for the Whole House's Water Use
* Installed after the main water inlet pipe (at the water meter outlet), serving as the "first line of defense" for the whole-house water purification system.
* Located before all water-related appliances such as water softeners, water purifiers, and water heaters, effectively intercepting sediment, rust, and calcium and magnesium ion scale precursors, protecting downstream equipment.
* Avoid installation in direct sunlight (such as on an unobstructed balcony) to prevent aging of plastic components or algae growth in the transparent filter bottle.
Installation Steps: Proper Operation Ensures Sealing
1. Close the Main Inlet Valve
Ensure the water supply is shut off and the pipeline pressure is released before installation.
2. Determine the Water Flow Direction
The filter cartridge housing is usually marked with an arrow →. The arrow direction must be consistent with the water flow direction (i.e., pointing inwards). Reversing the direction will cause the filter to fail.
3. Connect the Piping
Use quick-connect fittings or threaded unions to ensure the inlet (IN) and outlet (OUT) correspond. Tighten but not excessively to prevent O-ring displacement.
4. Secure the Unit
Use clips or brackets to vertically fix the filter to the wall, preventing shaking that could loosen the connections.
5. Turn on the Water Supply and Air Blowers
Slowly open the inlet valve and observe all connections for leaks. During initial operation, open the flush valve to expel air and impurities until the water is clear.
Special Tips for High-Hardness Water
* We recommend using a composite pre-filter with automatic flushing: a 5-micron PP cotton + activated carbon composite filter can simultaneously adsorb residual chlorine and odors, and slow down calcium and magnesium deposits that cause blockages.
* Shorten the maintenance cycle: In high-hardness areas, it is recommended to check the filter cartridge's condition every 1-3 months. Replace it if it turns yellow or black or if the water flow decreases.
* Better when used with a water softener: The pre-filter solves particulate contamination, while the water softener handles ion exchange; together, they comprehensively address hard water issues.
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