Because every system varies the maintenance on the pump will also very. It is suggested that you take the pump off every 4-6 months to clean and inspect the pump and its impeller for signs of breakage, debris and buildup. To clean the pump you make a 50%/50% mixture of vinegar and water. Soak the skimmer pump for at least 2 hours or more. For dirty pumps or pump with high calcification long soakings may be required.