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Flush It Out: How to Backwash and Rinse a Hayward Sand Filter
Is your pressure gauge creeping up or your pool water looking a little murky? It’s time to give your Hayward sand filter a refresh. In this tutorial, we’ll walk you through the quick and easy steps to backwash and rinse your filter so your pool stays crystal clear and your system stays efficient.
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Key Takeaways:
1. Backwashing clears built-up debris from the sand filter tank.
2. Rinsing prevents loosened debris from re-entering your pool after a backwash.
3. Monitor your pressure gauge — 8–10 psi above normal means it's time to backwash.
Step-by-Step Process:
1. Turn off the pump.
2. Set the multiport valve to “BACKWASH.”
3. Turn the pump on and backwash until the sight glass runs clear (about 1–2 minutes).
4. Turn off the pump, switch to “RINSE,” and restart the pump for about 30 seconds.
5. Turn off the pump and return the valve to “FILTER” mode.
