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Step 1
Insert a cartridge filter into the system. You want to make sure you turn the timer to "off" and the valves to "closed" to prevent the system from trying to run without a filter. Most new filters come with installation directions.
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Step 2
Program your system to filter on an economically-friendly schedule. To maintain your pool's quality, you want to filter for 6 to 8 hours a day during high-use times. You can reduce the time for filtering during winter months. The type of functions your system uses depends on the type of timer installed in the filter system.
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Step 3
Monitor the pressure for the filtration system. When you need to clean the swimming pool, the pressure rises to 8 to 10 lbs. above the clean reading.
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Step 4
Remove the filter and clean it every 6 months or when your observation dictates a cleaning time. Every time you clean the cartridge filter, it reduces its ability to clean as efficiently. Most cartridges need to be replaced every two to five years. To clean the filter, remove it from the tank and hose it down with a high pressure wash. Some people like to use a self-service car wash to do this.
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Step 5
Watch for indications of a decrease in the water's quality. If the water seems to filter slowly or the water looks dirty, you may have a problem in your system.
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Step 6
Change the filter for your cartridge filter system every 2 to 5 years, unless your filter experiences hard use.
