Why Is My Filter Flushing Too Often?

If a self-cleaning filter is flushing too often, the system is usually experiencing rapid debris buildup, high solids loading, an overly fine screen, or an undersized filter. Frequent flushing is not always a control problem; it often indicates that the filter is working harder than expected for the water quality or flow conditions.

Common Causes

• High suspended solids in the incoming water
• Micron rating is too fine for the application
• Filter is undersized for the flow rate
• Differential pressure setpoint is too low
• Flush cycle duration is too short

To solve frequent flushing, review the water source, screen size, flow rate, and differential pressure settings. In some cases, a larger filter or different screen selection may be needed to reduce cleaning frequency.