精细滤芯在使用一段时间后，易被污染物逐渐堵塞，引起滤筒压力升高，当压力达到0.4MPa时，需及时更换精细滤芯。
Dirt might stick to the elements of fine filter, causing a rise of the pressure in the filter bowl. When the pressure hits 0.4mpa, the elements should be the changed in time.
精细滤芯在使用一段时间后，易被污染物逐渐堵塞，引起滤筒压力升高，当压力达到0.4MPa时，需及时更换精细滤芯。
Dirt might stick to the elements of fine filter, causing a rise of the pressure in the filter bowl. When the pressure hits 0.4mpa, the elements should be the changed in time.
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