How to Backwash an Inground Pool Sand Filter

Backwashing an inground pool sand filter is an important maintenance task that should be done regularly to keep your pool water clean and clear. Here is a step-by-step guide on how to backwash your inground pool sand filter:

Step 1: Turn off the pool pump
Before starting the backwashing process, turn off the pool pump. This will prevent any damage to the pump or filter system.

Step 2: Turn the valve to the backwash setting
Locate the multiport valve on the sand filter and turn it to the backwash setting. This will redirect the water flow so that it flows out of the waste line instead of back into the pool.

Step 3: Turn on the pool pump
Turn on the pool pump and let it run for 2-3 minutes. This will force the water through the sand filter in the opposite direction, flushing out any dirt and debris that has accumulated in the filter.

Step 4: Check the sight glass
While the pump is running, check the sight glass on the filter to see when the water runs clear. This indicates that the backwashing process is complete.

Step 5: Turn off the pump
Once the water runs clear, turn off the pool pump.

Step 6: Turn the valve to the rinse setting
Turn the multiport valve to the rinse setting. This will rinse any remaining debris out of the filter and prevent it from flowing back into the pool.

Step 7: Turn on the pool pump
Turn on the pool pump and let it run for 1-2 minutes to rinse the filter.

Step 8: Turn off the pump
Once the rinse cycle is complete, turn off the pool pump.

Step 9: Turn the valve to the filter setting
Finally, turn the multiport valve back to the filter setting. This will allow the water to flow back into the pool.

In conclusion, backwashing your inground pool sand filter is an important maintenance task that should be done regularly to keep your pool water clean and clear. By following these simple steps, you can ensure that your sand filter is working at its best and keeping your pool water crystal clear.