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The pressure gauge on a Hayward S240 sand filter should typically read between 8 to 12 psi when the system is running normally. If the pressure rises significantly above this range, it may indicate that the filter is dirty and needs to be backwashed or cleaned. Conversely, a reading below this range may suggest a problem with the pump or a leak in the system. Regular monitoring of the gauge helps maintain optimal filtration performance.

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1mo ago

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