- 1). Unplug the old system. Most pool filters run on a timer. You don't want to risk the timer causing the filter to turn on during the replacement process.
- 2). Disconnect the hoses from the old filter. If you have a shut-off valve on the return or the skimmer hoses, set them to the "off" position. This will help prevent the flow of water from the pool. If you don't have a shut-off valve, stick the open end of the removed hose into the pool to stop the water flow
- 3). Open the air valve and loosen the top of the filter basket. By opening the valve and the filter basket top, air is able to get into the filter system to allow the water to drain out of the filter. An empty pool filter is easier to lift and remove than one filled with water.
- 4). Remove the old filter from the pump. This step is not necessary if you have purchased a new filter system and pump combo. If, however, you are only replacing the filter, then disconnect the filter from the pump and take the old filter away.
- 5). Position and level the new filter. Most often the new filter will go in the exact same location and position as the old filter. However, if the new filter is larger or wider than the old filter, you will have to adjust the set-up so the filter is level. A filter placed on unleveled ground will cause unwanted vibration.
- 6). Connect the new filter to the pool pump. When connecting the filter to the pump, apply plumber's tape at the point of connection to help prevent leaking.
- 7). Attach the hoses from the pool return and the skimmer to the corresponding ports on the pool filter. Once the hoses are attached, open the air valve on the filter. This will allow the water to begin to fill the new pump and filter system.
- 8). Plug in the filter and turn it on. Make sure to close the air valve once water begins to spray out of the valve.
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