How to Inspect an Inground Pool Sand Filter

A properly functioning inground pool sand filter is essential for maintaining clean and clear pool water. Over time, however, the filter can become clogged with debris and require inspection and cleaning. Here is a step-by-step guide for inspecting an inground pool sand filter:

Step 1: Turn off the Pool Pump
Before beginning any work on the sand filter, turn off the pool pump and wait for it to come to a complete stop. This will prevent any accidents or injuries.

Step 2: Release Pressure
Next, release the pressure from the sand filter. This can be done by turning the multiport valve to the “backwash” position and running the pump for a few minutes until the water flowing out is clear. Then turn off the pump and return the valve to the “filter” position.

Step 3: Remove the Sand Filter Cover
Remove the sand filter cover by loosening the bolts or clamps that hold it in place. Carefully lift off the cover and set it aside.

Step 4: Inspect the Sand
Inspect the sand inside the filter for any signs of wear or damage. If the sand appears to be discolored or has a foul odor, it may need to be replaced. Check for any cracks or chips in the sand filter itself, as these can cause leaks.

Step 5: Check the Laterals
Inspect the laterals, which are the small tubes that run from the bottom of the sand filter to the pool return line. Make sure they are all intact and not cracked or broken.

Step 6: Clean the Sand Filter
If the sand filter appears dirty or clogged, it will need to be cleaned. This can be done by backwashing the filter, which involves running the pump in reverse to flush out any debris. After backwashing, run the pump on the “rinse” setting for a few minutes to remove any remaining debris.

Step 7: Replace the Sand Filter Cover
Once the sand filter has been inspected and cleaned, replace the cover and tighten the bolts or clamps to secure it in place.

Step 8: Turn on the Pool Pump
Finally, turn on the pool pump and monitor the pressure gauge on the sand filter. If the pressure rises quickly, it may indicate that the filter needs to be cleaned again.

By following these steps, you can ensure that your inground pool sand filter is functioning properly and keeping your pool water clean and clear. Regular inspection and maintenance of the sand filter will extend its lifespan and save you money in the long run.