Thinking of upgrading your outdoor swimming pool experience? If your above-ground pool isn't part of a set that already includes a filter pump, the flow clear filter pump is an essential piece of kit. Unless you want to constantly be replacing your swimming pool water, which can be costly and time-consuming, you will need some sort of pool filter system to keep your water clean and clear of debris. Filtre cartridge pumps are an economical and convenient way to keep your pool water clean and are so simple to set up. Pump maintenance: stop water flowing to the filter pump. unscrew the filter cap retainer and remove the filter cap. Clean the filter cartridge with a garden hose. insert the cleaned filter cartridge; ensure it is centred in the filter pump. Check that the filter cap seal is in place. replace the filter cap and screw the filter cap retainer into position. replace the stopper plugs with the debris screens in the pool’s inlet and outlet valves. Tighten the hose clamps. water will now flow to the pump. Open the air purge valve to remove any air from the system as outlined in the pump installation directions.