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how to change sand in intex pool filter

Author: Poolking - Swimming Pool Equipment Manufacturer

Introduction:

Intex pool filters are popular among pool owners for their reliability and durability. These filters ensure that the pool water remains clean and clear throughout the swimming season. However, just like any other filter, the sand in Intex pool filters needs to be changed periodically to maintain their efficiency. In this article, you will learn how to change the sand in your Intex pool filter step by step.

Why change sand in Intex pool Filter?

Over time, the sand in your Intex pool filter will become clogged with dirt, debris, and algae, which can cause the pool water to become cloudy or discolored. If you notice that the water is not as clear as it used to be, or if you find it difficult to maintain adequate chlorine levels, then it is time to change the sand in your Intex pool filter.

Steps to change sand in Intex pool Filter

Step 1: Prepare the Equipment

Before starting, make sure that you have all the necessary equipment for the job, including safety goggles, a wrench, a shop vac or a scoop, lubricant, and new sand. Turn off the filter, drain the pool water below the level of the filter, and disconnect the electrical supply to the pool pump.

Step 2: Open the Filter

Remove the pump motor assembly and the sand filter tank from the pool filter base. Unscrew the drain cap at the bottom of the filter tank to drain out any remaining water. Next, loosen and remove the air relief valve located on the top of the tank. Unscrew the clamps or bolts holding the tank top in place, and lift it off.

Step 3: Remove the Old Sand

Using a scoop or shop vac, remove all the old sand from the filter tank. Be sure to dispose of the sand in a way that complies with local regulations. Check the laterals at the bottom of the filter tank for any signs of damage or wear, and replace them if necessary.

Step 4: Clean and Inspect the Tank

Once you have emptied the sand in the filter, clean the tank with a garden hose or pressure washer to remove any remaining debris or algae. Inspect the filter tank for any cracks or signs of damage, and replace it if necessary.

Step 5: Install New Sand

Add the new sand to the filter tank. Be sure to use only the type and amount of sand recommended by the manufacturer. Spread the sand evenly in the filter tank, and make sure that it is level across the surface.

Step 6: Reassemble the Filter

Reassemble the filter in reverse order of disassembly. Make sure that you lubricate the O-ring on the filter top with silicone lubricant before reinstalling it. Tighten the clamps or bolts securely to prevent any leaks. Replace the air relief valve and the pump motor assembly.

Step 7: Backwash and Rinse

Before starting the pool filter, backwash the filter tank to remove any dirt and debris that may have accumulated. Run the filter on the rinse cycle to remove any fine sand particles from the filter system.

Conclusion

Changing the sand in your Intex pool filter is a straightforward process that anyone can do. By following the steps outlined in this article, you can ensure that your filter remains in top condition, and your pool water stays clear and clean throughout the swimming season. Remember to follow the manufacturer's guidelines for the amount and type of sand to be used in your filter.

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After about 5~10days ,or when the reading of the pressure gauge on the pump side of the filter has increased by about 0.2bars since the last backwash , backwash the filter as follows:
1. Stop the pump
2.Close the valves on the suction and return lines.
3.Open the cover of the pump and empty the filter gasket .
4.Refit the cover
5.Open the valve to the drain outlet
6.Turn the lever to BACKWASH
7. Open the valves to the suction and return lines.
8.Start the pump .Rinse the filter for about 1 to 2 minutes until the water in the sight glass is clear .
NOTE : Any electric heater must be off .
9. Stop the pump
10. Turn the lever to RINSE , start the pump and rinse for about 15~30 seconds. Stop the pump and turn the lever to FILTER . This is the normal operating position .
11. Close the drain outlet valve and start the pump . Switch on the electric heater if any .
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a. Power failure or motor protection tripped
b. Pump doesn't vent
c. Pump doesn't fill the water
d. Suction line/hose leaking
e. Transparent cover not properly installed - check filter basket - even bolts
f . Inlet suction process is too large g.) Total resistance loss exceeds the allowable range of the pump - recalculate the required pressure
h. Mechanical shaft seal leakage
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