How often should I change the pre-filter in my NATIONAL PRIDE NPRO2000S reverse osmosis system

[MarcusRose]

To keep your NATIONAL PRIDE NPRO2000S reverse osmosis system running at its best, it's important to replace the pre-filter cartridges. The user manual suggests changing the 5-micron pre-filter about once a month, but this can change based on how much water the system is producing. The pre-filter is there to protect the membrane from any particles that might be in your water. If you notice the water pressure dropping by 8 psi or more, that's a sign it's time to swap out the filter. Always use a pre-filter rated at 5 microns or less when replacing it. Regular pre-filter changes are key to keeping your NATIONAL PRIDE NPRO2000S working efficiently.