What is the normal operating pressure of a HAYWARD 14 m³/h sand filter?

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For the HAYWARD 14 m³/h sand filter, there is no single "normal" pressure, as the initial pressure varies depending on the installation. However, the manual defines important thresholds:

Reference initial pressure

The reference pressure is the one displayed on the manometer during the first startup of the filter or just after a backwash (cleaning). Note this value precisely, as it will serve as a reference point throughout the life of the filter.

Backwash threshold

The filter should be cleaned (backwashed) as soon as the pressure exceeds 0.7 bar (or 10 PSI) above this initial pressure. For example:

If the filter starts at 0.3 bar, backwash it when it reaches 1.0 bar
If the filter starts at 0.5 bar, backwash it when it reaches 1.2 bar

Pressure monitoring

The filter comes with a manometer attached to the valve. Regularly check this pressure during operation: it naturally increases as the filter accumulates impurities. This signal indicates that a backwash is necessary.

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