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1, according to the cleanliness of the environment, the general regular (initial effect is generally 1-6 months, the effect is generally 3-8 months, high efficiency is generally 6-12 months) to replace the filter.
2, regular (usually once a week test) with the laser dust particle counter to determine the cleanliness of the product with the cleanliness of the region cleanliness, cleanliness and measured when the cleanliness does not match the requirements, the cause should be identified (whether there is leakage , High efficiency if there is failure, etc.) If the high efficiency filter has failed, you should replace the new high efficiency filter.
3, replace the high efficiency filter and the initial effect of the filter should be shut down.
4, the replacement of high efficiency filter should note the following:
(1) the replacement of high efficiency filter should pay special attention to unpacking, handling and installation access to ensure that the filter paper intact, prohibit hand touch filter paper damage.
(2) Before installation, the new high efficiency filter on the bright spot to the naked eye to see whether the high efficiency filter due to transport and other causes of damage, such as filter paper can not be used loopholes.
(3) replace the high efficiency filter should first remove the lid, then remove the pressure, and then the failure of the high efficiency filter out, put on a new high efficiency filter (note that the high efficiency filter air flow arrow signs and purification unit The direction of the same air flow), to ensure that the box will be sealed back cover in situation.

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