Pump runs but filter pressure is much higher than normal and flow is reduced

Safety first: Turn off the pump before changing valve positions or opening the filter.

• Backwash or clean filter: For sand filters, perform a full backwash and rinse. For cartridge filters, remove and hose off or replace cartridges.
• Open valves: Verify that all return‑side valves are fully open and that any water features are not restricting flow excessively.
• Check for obstructions: Inspect return fittings in the pool for blockages (e.g. toys, leaves).
• Adjust speed: On variable‑speed Saci pumps, reduce speed to a level appropriate for your filter and plumbing to avoid excessive pressure.

Operating with very high filter pressure can damage equipment; correct the restriction before continued use.