All kinds of filters in front of the equipment, are not allowed to open packaging or packaging film; And follow the direction indicated on the packing for the filter; In the process of transfer, should take put down, light, avoid violent vibration and knock against. In the process of delivery, equipment, and use, in accordance with the requirements of, to ensure the use function. All kinds of filters in use after a period of time, due to capture the dust filter material appearance, which makes the power and resistance of the filter down, affected the supply air cleanliness, requirements in a timely manner to replace filters at the moment. About the need for high efficiency filter of high humidity and high temperature environment, it is necessary to select filter resistance to high temperature and high humidity. All kinds of filters in front of the equipment, are not allowed to open packaging or packaging film; And follow the direction indicated on the packing for the filter; In the process of transfer, should take put down, light, avoid violent vibration and knock against. In the process of delivery, equipment, and use, in accordance with the requirements of, to ensure the use function. All kinds of filters in use after a period of time, due to capture the dust filter material appearance, which makes the power and resistance of the filter down, affected the supply air cleanliness, requirements in a timely manner to replace filters at the moment. About the need for high efficiency filter of high humidity and high temperature environment, it is necessary to select resistance to high temperature and high moisture of filter paper with a partition, the box body data, produce with satisfaction. Biological clean room and pharmaceutical clean room, it is necessary to choose metal frame body of the filter, and its appearance is not easy to rust. Do not allow the use of wooden frame filter, to prevent bacteria, affecting the product percent of pass. About the above filters, assume that the filter before and after have differential gauge or differential pressure sensor, with coarse filter, when the pressure difference value is greater than 250 pa, it is necessary to replace them. To effectively filter, the pressure difference is greater than 330 pa, there is a need to be replaced; About the high efficiency filter, when the pressure difference value is larger than 400 pa, it is necessary to replace them, and the original filter can't reuse; For high efficiency filter, when the filter resistance value is greater than 450 pa; Or when the wind surface to minimize the air velocity limits, even replace the efficient filter, in effect, the airflow speed still cannot be enlarged; Or when there is unable to repair the leakage of high efficiency filter appearance condition, shall be replaced a new efficient filter; Without the above conditions, generally can be applied according to the environmental conditions, 1 - 2 years to replace one more time. In order to give full play to the role of the filter, in the process of selection and use, the filter head on wind speed, in effect, effectively filter should not be greater than 2. 5 m/s, and the efficient filter and high efficiency filter should not be greater than 1. 5 m/s, such not only to ensure that the power of the filter can also extend the filter using become old, yea, to save money. In the operation of the equipment, general don't replace filter; As a result of the filter is to replace the deadlines to replace downtime, are only allowed on the continuing fan to replace coarse, medium efficiency filter; The efficient filter and high efficiency filter is necessary to have after the air supply, can replace; Filters and gaskets between the connecting structure, it is necessary to close, no leakage, to ensure that the filtering effect.