What are the installation requirements for high efficiency filters?

High efficiency filter is the key component of air purification system. At present, there are superfine glass fiber paper and superfine filter materials used in China. Asbestos fiber paper is used to filter submicron particles that cannot be filtered by coarse and medium efficiency filters, and the maximum content is below 1um to ensure the cleanliness of the clean room. In order to ensure the filtration efficiency of the filter and the cleaning effect of the cleaning system, the installation of the high-efficiency filter must meet the requirements of the Code for Construction and Acceptance of Clean Factory Buildings or design drawings. The preparation before installation is to prevent HEPA filter from being polluted. When unpacking inspection and installation, the air purification system must be installed, and the air conditioner, HEPA filter box, air duct and clean room must be cleaned. The stand-alone equipment of the air conditioning system can be put into trial operation to stabilize the amount of dust blown out by the air duct. Before installation, check the straightness of the end face or edge opening of the filter frame, and the allowable deviation of the flatness of the end face is not more than 65438 0 mm. If the flatness of the end face exceeds the allowable deviation, only the end face of the frame where the filter is installed is allowed to be modified or adjusted, and the outer frame of the filter itself is not allowed to be modified, otherwise the filter material or sealing parts in the filter will be damaged and the filtering effect will be reduced. When installing a high-efficiency filter, ensure that the air flow direction is consistent with the direction marked by the arrow on the outer frame. When the high efficiency filter assembled by corrugated plate is installed vertically, the corrugated plate must be vertical to the ground and cannot be inverted. The high-efficiency filter and the frame for assembling the high-efficiency filter are generally sealed by jacking method and pressing method. For the clean systems with strict cleanliness requirements above grade, some adopt the tool holder type high-efficiency filter tank sealing device. The characteristics of jacking method and compaction method can install and replace high-efficiency filters in dust-free workshops.