how to check pool filter

2023/06/30

Author: Poolking - Swimming Pool Equipment Manufacturer

How to Check Your Pool Filter: A Comprehensive Guide


Your pool’s filter is responsible for keeping the water clean and healthy for swimming. It catches debris, dirt, and other unwanted particles that can cloud and contaminate your pool. Like any equipment with moving parts, your pool filter requires regular maintenance and inspections, especially during swimming season. If you’re not sure how to check your pool filter, follow this guide to maintain optimal pool cleanliness.


Why You Should Check Your Pool Filter


A functioning pool filter should remove particles up to 5 microns from the pool water. That’s equivalent to the size of a grain of sand or a human hair. Even if your pool has clear and sparkling water, it doesn’t always mean that the filter is working efficiently. A clogged or malfunctioning filter can cause:


- Algae growth: When the filter isn’t working correctly, it can’t remove organic matter from the water. Organic matter is food for algae, and when it’s not filtered out, it creates a breeding ground for algae that can turn your pool green.

- Contamination: Debris and dirt not caught by the filter can cause your water to become cloudy and dirty. A dirty pool can cause skin irritations, such as rashes, and eye irritation.

- Pool pump damage: When the filter is dirty or clogged, it can cause your pool pump to work harder than it should. This extra work will wear out the pump’s motor, which can result in costly repairs or replacements.


When to Check Your Pool Filter


You should check your pool filter at least once a month and during swimming season. But there are certain times when you should pay closer attention to your filter:


- After a storm: Storms can dump dirt, debris, and other contaminants into your pool.

- After heavy usage: When you have a lot of people using your pool, the filter will be working overtime, and it’s best to check it to make sure it’s not clogged.

- When you open your pool: If you closed your pool during the winter, it’s best to check the filter before you start using your pool in the summer.


How to Check Your Pool Filter


There are three types of pool filters: sand, diatomaceous earth (DE), and cartridge. The type of filter you have will determine how you inspect and clean it.


Sand Filter


A sand filter is the most common type of pool filter. It’s easy to maintain and can last up to five years. Here’s how to check your sand filter:


Step 1: Turn off the pool pump and switch off the power source.


Step 2: Turn the filter’s multiport valve to the “backwash” position.


Step 3: Turn the pump back on and let it run until the water running out of the waste pipe is clear. This should take about two to three minutes.


Step 4: Turn off the pump and switch off the power source.


Step 5: Turn the multiport valve to the “rinse” position.


Step 6: Turn the pump back on and let it run for 30 seconds.


Step 7: Turn off the pump and switch off the power source.


Step 8: Turn the multiport valve back to the “filter” position.


Step 9: Turn the pump back on and let it run.


Diatomaceous Earth (DE) Filter


A DE filter catches particles as small as 3 microns, which makes it a popular choice for people with algae problems. Here’s how to check your DE filter:


Step 1: Turn off the pool pump and switch off the power source.


Step 2: Open the filter’s air relief valve to release pressure.


Step 3: Remove the filter’s tank lid and take out the internal parts.


Step 4: Rinse the internal parts with a hose.


Step 5: Inspect the filter’s tank for any cracks, leaks, or signs of wear and tear. Replace any damaged parts.


Step 6: Reinstall the internal parts and the tank lid.


Step 7: Turn the power source and the pump back on.


Cartridge Filter


A cartridge filter is low maintenance and lasts up to five years, but it’s not ideal for pools with heavy usage. Here’s how to check your cartridge filter:


Step 1: Turn off the pool pump and switch off the power source.


Step 2: Open the filter’s tank and remove the cartridge.


Step 3: Rinse the cartridge with a hose.


Step 4: Inspect the cartridge for signs of wear and tear, such as cracks or holes.


Step 5: Reinstall the cartridge.


Step 6: Turn the power source and the pump back on.


Conclusion


A clean and healthy pool relies on a functioning filter. Regular inspections and maintenance can prevent algae growth, contamination, and pump damage that can lead to costly repairs. Check your pool filter at least once a month, and call a professional if you need help with any repairs or replacements. By following this guide, you can enjoy a clear and sparkling pool all summer long.

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