Water is essential for life, and it covers about 71% of the Earth's surface, with a total volume of approximately 1.37 billion cubic kilometers. More than 97% of this water is saltwater found in the oceans, leaving less than 3% as freshwater—only a small fraction that we can actually drink. As one of the most fundamental needs for survival, water plays a critical role in our daily lives, making its importance undeniable.
However, despite its significance, many freshwater sources are being polluted by human activities. Even after treatment by water companies, the quality may still not be sufficient for safe consumption. That’s why many households choose to install water purifiers to ensure the water they drink is clean and safe. But when it comes to maintaining these devices, questions often arise: Can the filter elements be cleaned? How long do they last? And how should they be replaced?
Let’s take a closer look at these common concerns.
**1. Can the Water Purifier Filter Be Cleaned?**
Yes, some filters can be cleaned, depending on the type and design of your water purifier. Here are some tips:
- **Initial Flush:** Before using your new purifier, flush it thoroughly to remove any protective liquid. Open the tap, inlet valve, and purification faucet, and 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, which helps dislodge debris more effectively.
- **Regular Flushing:** Daily use of the purified water tap also serves as a form of flushing. After washing dishes or using the tap, allow the purifier to flush out any trapped impurities. This keeps the system efficient and extends the lifespan of the filter.
- **Backwashing:** If the water flow becomes slow, consider backwashing the unit. Most purifiers have a backwash button that reverses the water flow to clean the filter element.
- **Filter Replacement:** While some parts can be cleaned, others must be replaced regularly. For example, PP cotton filters should be changed every 1–3 months, while activated carbon filters typically last around 3–6 months. It’s important to follow the manufacturer’s guidelines to avoid secondary contamination from dirty internal components.
- **Cleaning the Front Filter:** If the water flow slows down, check the front filter. Open the cover, remove the non-woven fabric, and rinse it under running water. Avoid using soap on black carbon fiber filters—just rinse them gently.
**2. How Long Can the Water Purifier Filter Be Used?**
The lifespan of each filter depends on the type and usage:
- **PP Cotton Filter:** 3–6 months
- **Reverse Osmosis Membrane (RO):** Approximately 2 years
- **Activated Carbon (T33):** About 1 year
- **Hollow Fiber Ultrafiltration Membrane (UF):** 3 years or more
- **Coconut Shell Activated Carbon:** 6–12 months
Always refer to the user manual for specific recommendations, as different models may vary.
**3. How to Replace the Water Purifier Filter?**
Replacing a filter is a straightforward process if done correctly:
1. Use a wrench to unscrew the filter housing. Hold the filter cap with your other hand to prevent loosening the pre-filter connection.
2. Remove the old filter and replace it with a new one. Make sure to purchase a certified brand, such as those with an official stamp.
3. Check the internal white plastic washer and the outer black washer. If they’re loose, press them tightly by hand.
4. Observe the color of the PP cotton through the transparent front panel. If it looks dark or clogged, it’s time to replace it. Don’t skip this step just to save money—your health matters.
5. Before replacing, close the main water valve (or the three-way ball valve if available), then open the faucet to drain any remaining water from the system.
6. Fill the filter bottle halfway with tap water, place it back into the housing, and tighten it securely.
Understanding how to maintain your water purifier is key to ensuring the water you drink remains safe and clean. While some people may think a water purifier is unnecessary, the reality is that even water from the tap can become contaminated during its journey through aging pipes. A water purifier acts as a crucial barrier against harmful substances that can’t be seen with the naked eye.
Investing in a water purifier isn’t just about convenience—it’s about protecting your health and the health of your family. So, whether you're new to water purifiers or looking to improve your current setup, knowing how to properly clean and replace filters can make all the difference.
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