Water is one of the most essential elements for life on Earth. Covering about 71% of the planet’s surface, the ocean holds an enormous volume of water—around 1.37 billion cubic kilometers—and makes up over 97% of the world’s total water supply. The remaining less than 3% is fresh water, which is vital for human consumption and daily activities. As a fundamental necessity, water plays a critical role in our survival, making its quality and availability a major concern.
However, despite its importance, many freshwater sources are being polluted by human activity. Even after treatment at water plants, the water that reaches our homes may still contain harmful impurities. This has led many households to invest in water purifiers to ensure the safety of their drinking water. But with this comes a series of questions: Can the filter be cleaned? How long does it last? And how should it be replaced?
Let’s take a closer look at these common concerns and uncover the answers.
**1. Can the Water Purifier Filter Be Cleaned?**
Yes, some filters can be cleaned, but the process varies depending on the type of filter. Here’s what you can do:
- **Initial Rinse:** When first installing your water purifier, it’s important to flush it out to remove any protective liquid. Open the tap, the inlet ball valve, and the purified water faucet, then let the water run for 15 minutes. Switch the taps on and off periodically (off for 3 seconds, on for 10 seconds) to create a pulsating flow that helps clean more effectively. Afterward, close the waste water valve and wait 5 minutes before using the purified water.
- **Regular Flushing:** Using the purified water tap regularly helps keep the system clean. It’s recommended to flush the purifier after each use to remove trapped particles and maintain high water flow.
- **Backwashing:** If the water flow slows down, consider backwashing the unit. Most modern purifiers have a backwash button that reverses the water flow to clear blockages in the filter.
- **Filter Replacement:** Some filters cannot be cleaned and must be replaced. For example, PP cotton filters typically need to be changed every 1–3 months, while activated carbon filters may last up to a year. Always check the manufacturer's recommendations for your specific model.
- **Cleaning the Pre-Filter:** If your front filter becomes clogged, open the cover and remove the non-woven fabric. You can rinse it under running water or wash it gently with a mild detergent. However, avoid washing black carbon fiber components, as they should only be rinsed.
**2. How Long Can the Water Purifier Filter Be Used?**
The lifespan of different types of filters varies:
- **PP Cotton Filter:** 3–6 months
- **Reverse Osmosis Membrane (RO):** About 2 years
- **Activated Carbon (T33):** Around 1 year
- **Hollow Fiber Ultrafiltration Membrane (UF):** 3 years or more
- **Fine Coconut Shell Activated Carbon:** 6–12 months
It’s important to follow the manufacturer’s guidelines to ensure optimal performance and safety.
**3. How to Replace the Water Purifier Filter?**
Replacing a water purifier filter is a straightforward process:
1. Use a wrench to unscrew the filter bottle clockwise. Hold the filter cap with your other hand to prevent it from loosening.
2. Remove the old filter and replace it with a new one. Make sure to purchase certified brands, such as those with official stamps or logos.
3. Check the internal white plastic washer and the external black washer inside the filter cap. If they are loose, press them tightly by hand.
4. Observe the color of the PP cotton through the transparent front panel. If it has turned dark or is heavily soiled, it’s time to replace it.
5. Before replacing, make sure to turn off the water supply valve. If your purifier doesn’t have a three-way ball valve, turn off the main water valve at home and open the faucet to drain any remaining water.
After installation, fill the filter bottle halfway with tap water, reinsert it into the housing, and tighten it securely.
Although some people might think a water purifier is unnecessary, it’s important to remember that even water that looks clean when it leaves the treatment plant can become contaminated during transportation through aging pipes. These pollutants may not be visible to the naked eye, but they can harm your health over time. A water purifier acts as a crucial barrier, helping to remove harmful substances and ensuring the water you drink is safe and clean.
Investing in a water purifier isn’t just a convenience—it’s a smart decision for your health and well-being.
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