日常工作中，經常收到客戶反饋說淨水器出水量越來越少了，是不是RO膜的問題呀？這都是習慣性思維，畢竟反滲透膜在淨水器中的角色太重要了，且價格不菲。但是更換了新的RO膜後，出水仍然緩慢。淨水器出水慢或者出水少是很多原因的。

Some customers may complain that the water output of the water purifier is getting less and less。 Is it caused by the reverse osmosis membrane？ Maybe they are right， as the RO membrane is quite important to water purifier， and it’s expensive。 However， after replacing the RO membrane， why the water flow is still slow。 Let’s find out the reasons。

第一，RO膜堵塞

RO膜的更換週期一般為12到24個月，如果使用時間超過膜的壽命，膜就容易堵塞，淨水器出水慢。

First， RO membrane is blocked。

It’s recommended to replace ro membrane every 12 to 24 months。 If the use time exceeds the working life of membrane， the membrane will be easily blocked and the water output will be slow。

另外，原水水質太差，像印度南部或者巴基斯坦的原水，高達3000ppm 以上，而廢水回收率過高，容易導致廢水電磁閥或清洗組合閥堵塞，機器幾乎不排放廢水，膜的壽命也會縮短。

In addition， like South India or Pakistan， the quality of raw water is very poor with tds > 3，000ppm， and the recovery rate is quite high， which will easily cause the waste water solenoid valve or the cleaning combination valve to be blocked。 There is almost no waste water to be discharged， and the working life of membrane will be shortened。

還有一種情況是，膜本身的質量不好，影響產水，也起不到淨化水的效果。

Another reason is that the quality of membrane is not good。 This not only affects the water production， but also cannot purify water。

第二，前置預處理濾芯堵塞

其他前置預處理濾芯，PP棉和其他活性炭濾芯，使用時間太長，濾芯堵塞，機器內部的水質濃度就會被堆積，比進入濾芯前的水質差得多。除了出水慢，還會汙染整個淨水器。所以，及時更換濾芯，儘量購買有自動沖洗功能的淨水器，可以讓濾芯和RO膜乾淨點。

Second， the pre-pretreatment filter element is blocked。

For other pre-pretreatment filter elements， like PP and other activated carbon filter elements， if they are used for a longer time， the filter elements will be blocked。 In this way， the water concentration inside the purifier will be accumulated， which is much worse than the water before entering the filter element。 Besides slow water output， it will also pollute the whole water purifier。 Therefore， replacing the filter element in time， trying to buy a water purifier with automatic flushing function， can keep the filter element and RO membrane as clean as possible。

第三，泵的壓力小

水泵壓力不足，會導致原水達不到膜制水的水壓，影響產水量。特別水質不好的地方，增壓泵壓力要根據原水質量適當調整。一般來說，使用2年以上的反滲透淨水器或長期執行的反滲透淨水器，增壓泵的壽命也將相應縮短的。

Third， the pump pressure is low。

Due to insufficient water pump pressure， the raw water fails to reach the pressure of membrane， and cannot produce too much water。

Especially when the water quality is not good， the pressure of the booster pump should be adjusted appropriately according to the quality of the raw water。

Generally speaking， if you use a RO water purifier for more than 2 years， or the RO purifier keeps long-time running， the life of booster pump will be shortened accordingly。

第四，溫度低

產水速度與溫度有關，一般以25℃為基準，每減少1℃，水產量就會減少3%。所以冬天比夏天的出水速度下降一半以上，北方地區和南方地區出水也有很大區別。因此，冬季淨水器要做好防寒防凍措施。

Fourth， the temperature is low

The rate of water production is related to temperature， generally based on 25 ℃， and every 1 ℃ decrease will reduce water production by 3%。

Therefore， the water output rate in winter is over 50% lower than that in summer， and there is a big difference of water output between northern and southern regions。 So， it should take cold-resistant measure of the purifiers in winter。

如果以上情況都沒辦法解決淨水器產水問題，請及時聯絡專業售後人員。

If still cannot solve the water production problems， please contact local professional after-sales personnel in time。