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how to flush pool filter

Author: PoolKing - Pool Sand Filter Manufacturers

Introduction

Pool filters are essential in keeping swimming pool water clean and clear. Over time, debris, dirt, and other particles accumulate on the filter media, making it less efficient in trapping contaminants. When this happens, it's time to flush the pool filter to maintain its optimal performance. Flushing the pool filter is a simple and easy process that can be done in a few steps.

Types of Pool Filters

There are three common types of pool filters, namely sand filters, cartridge filters, and diatomaceous earth (DE) filters. Each type has its way of flushing or cleaning the filter. It's essential to know which type of pool filter you have to determine the right way to flush it.

Flushing a Sand Filter

Sand filters are the most commonly used type of pool filter. To flush a sand filter, follow these steps:

1. Turn off the pool pump and switch the valve to the "backwash" position.

2. Turn on the pump and let it run until the water runs clear. This usually takes about 3 to 5 minutes.

3. Turn off the pump and switch the valve to the "rinse" position.

4. Turn on the pump and let it run for about 1 to 2 minutes.

5. Turn off the pump and switch the valve back to the "filter" position.

6. Turn on the pump and resume normal filtration.

Flushing a Cartridge Filter

Cartridge filters are easy to maintain and clean. To flush a cartridge filter, follow these steps:

1. Turn off the pump and remove the cartridges from the filter housing.

2. Rinse the cartridges with a high-pressure hose to remove any debris or dirt.

3. Soak the cartridges in a filter cleaning solution for about 8 hours.

4. Rinse the cartridges with a high-pressure hose again to remove any remaining dirt or cleaning solution.

5. Reinsert the cartridges into the filter housing and turn on the pump to resume normal filtration.

Flushing a DE Filter

DE filters are the most efficient type of pool filter, but they require more maintenance than sand or cartridge filters. To flush a DE filter, follow these steps:

1. Turn off the pump and turn the valve to the "backwash" position.

2. Remove the drain plug and let the water drain out.

3. Remove the filter grid assembly and rinse it thoroughly.

4. Replace any damaged or worn out parts.

5. Reassemble the filter grid assembly and add new DE powder according to the manufacturer's instructions.

6. Turn on the pump and resume normal filtration.

Conclusion

Flushing the pool filter is an essential part of maintaining clean and clear pool water. It's crucial to know the type of pool filter you have to determine the right way to flush it. With proper care and regular maintenance, your pool filter will last for many years and keep your pool water sparkling clean.

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----It is best to replace the silica sand of sand filters every 1-2 years for the following reasons:
a During backwashing, the filtration bed volume will expand upwards by 1.2 to 1.3 times. The water flow will drive the filtration layer to flow up and down, causing the filtration material particles to collide with each other. Backwash will let the small sand evacuate.
b.Some silica sands will be welded when the acid and alkali are changed due to insufficient purity;
Therefore, the longer the time, the worse the filtering effect of the sand tank. Since backwashing will consume and take away some sand, we need to replace the sand in the sand tank within the specified period.
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 .
Poolking provides hundreds of sand filters for Sanya Haichang Fantasy Town
With the theme of " Silk Road" culture, the park is divided into 8 theme areas: Haitang Bay, African Sea, Persian Gulf, Bengal Bay, Java Sea, South China Sea, as well as a water promenade and a fantasy ocean theater. It combines rare marine animals, amusement equipment and novel themed performances, original African music, Persian Gulf dome and Bengal Bay food, etc. to create a fantastic marine world for everyone.
a.Firstly you can tell me the pool size such as wide, length and depth.The circulation period is 4 hours,then we can use the pool volume divide by 4 to know the flow rate.Based on this we can know choose the suitable model for sand filter and pump.
b.Usually 4 meters can install a pool light.Both ends of the pool can install the ladders.
The basic filtration equipment can be chosen like above method.The other accessories can be fixed according to the using environment and requirement.
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Contact: Sandy

Email: sandy@poolking.co

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WhatsApp:+86-13922334815

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