Filter general running 2000 ~ 3000 hours to change the oil and cleaning, specific visible dust by how many and decide.
过滤器一般运行2000 ~ 3000小时后要换油与清洗，具体可视所积灰尘多少而定。
Air filter to smaller screen and through the dust grain and oil droplets, so as to achieve the purpose of purifying.
气流最后通过过滤网滤去较小尘粒和油滴，从而达到净化的目的。
Nepal dust filter bag, water repellent and oil acupuncture is acupuncture Neely water repellent and sparse oil used by the padding, pre-bake, baked formed.
拒水防油针刺尼除尘滤袋是针刺尼利用疏水剂和疏油剂经浸轧，预烘，焙烘处理而形成的。
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