Installation and maintenance of filters

                  Column:Technical article Time:2018-08-18
                  All kinds of filters in front of the equipment, do not allow to open the packaging bag or packaging film; and according to the direction marked on the packaging box to store the filter...

                  All kinds of filters in front of the equipment, do not allow to open the packaging bag or packaging film; and according to the direction marked on the packaging box to store the filter; in the transfer process, should be handled lightly, to avoid violent vibration and knock. In the process of transportation, equipment and operation, it should be carried out according to the requirements so as to ensure the operation. Various filters in use after a period of time, because the filter material surface trapped dust, so that the filter power and resistance decreased, affecting the cleanliness of the air supply, now the need to replace the filter in time. It is necessary to select high-temperature and high-humidity resistant filter paper for high-efficiency filter used in high humidity and high temperature environment.

                  All kinds of filters in front of the equipment, do not allow to open the packaging bag or packaging film; and according to the direction marked on the packaging box to store the filter; in the transfer process, should be handled lightly, to avoid violent vibration and knock. In the process of transportation, equipment and operation, it should be carried out according to the requirements so as to ensure the operation. Various filters in use after a period of time, because the filter material surface trapped dust, so that the filter power and resistance decreased, affecting the cleanliness of the air supply, now the need to replace the filter in time. It is necessary to select high-temperature and high-humidity resistant filter paper, separator and frame materials for high-efficiency filters used in high-humidity and high-temperature environments to meet production requirements. It is necessary to use metal frame filter in bio-clean room and medical clean room, and its appearance is not easy to rust. It is not allowed to use wood frame filter to prevent bacteria from affecting the qualified rate of products. With regard to the above filters, it is necessary to replace the coarse-effect filters when the differential pressure is greater than 250Pa, assuming that there is a differential pressure gauge or differential pressure sensor before and after the filter; with regard to the medium-effect filters, when the differential pressure is greater than 330Pa, it is necessary to replace them; with regard to the sub-high-efficiency filters, when the differential pressure is greater than 400Pa, it is necessary to replace them. Replacement, and the original filter can not be reused; with respect to high-efficiency filters, when the filter resistance value is greater than 450Pa; or when the air velocity on the outlet surface falls to the minimum limit, even after replacing the coarse and medium-efficiency filters, the air velocity can not increase; or when the surface of high-efficiency filters can not be repaired leakage, must be replaced. New high-efficiency filters; if no such conditions, generally according to the use of environmental conditions, 1-2 years to replace once. In order to give full play to the role of the filter, in the selection and operation process, the front wind speed of the filter, coarse and medium-effect filters should not be greater than 2.5m/s, sub-high efficiency filters and high efficiency filters should not be greater than 1.5m/s, not only to ensure the power of the filter, but also extend the filter service life and save costs. In general, do not replace the filter when running; if the filter has reached the replacement deadline and can not be stopped to replace, only allow the replacement of coarse and medium-effect filter in continuous fan condition; sub-efficient filter and high-efficiency filter after it is necessary to connect air supply, can be replaced; between the filter and the connecting structure of the gasket, it is necessary to close, No. Leak out to ensure filtration.                                                                                                                                                                                                                                                                                                                            

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