Daily maintenance and maintenance methods of air filters
1. In the process of transportation and movement of the filter, it should be handled with care, and violent collision and vibration are not allowed.
Second, the installation of the high-efficiency filter also pays special attention, the installation direction can not be wrong, the connection between the filter and the frame, there can be no leakage, deformation, damage, leakage, after the filter is installed, the inner wall must be cleaned.
3. Observe the filter carefully, wipe the filter with a white silk cloth, and check whether there is any leakage.
Fourth, before the installation of the high-efficiency filter, clean the inside of the room where the equipment is located, and the place where the equipment is installed should also be clean, to ensure that the indoor environment will not have an impact on the high-efficiency filter.
Fifth, in the process of transportation and storage, the high-efficiency filter should be implemented in strict accordance with the standards.
6. Unpacking the high-efficiency filter must be carried out on site, check whether the package is damaged before dismantling, and check the filter after disassembly to see if the appearance is damaged. Measure whether the side length and diagonal of the filter meet the requirements, whether the outer frame is rusty, and whether the product certificate and technical parameters are equal.
7. For high-efficiency filters above level 100, the leakage detection of high-efficiency filters must be strictly implemented in the "Specifications for Clean Room Construction and Acceptance".
8. For the installation of the filter, the direction of the arrow should be consistent with the direction of the airflow, and if it is installed vertically, the crease of the filter paper should be perpendicular to the ground.
9. For primary flat and pleated filters, it should be noted that the galvanized mesh should be in the direction of the back of the air outlet; The installation direction of the bag filter should be so that the length of the filter bag is perpendicular to the ground, not parallel to the ground.
10. The primary and intermediate air filters are usually replaced after about 2 months of use, and the replaced filter material can be cleaned with detergent in water, and reused after drying. It should be noted that it must be replaced after rinsing twice, and natural air drying should be selected for drying, not placed in the sun to dry.
11. The use of bag filters, if the average daily operation is 8 hours, can be used for 3-4 months.
12. Under normal use conditions, the sub-high efficiency filter can be used for about 6 months.
13. It is recommended to install a differential pressure gauge in front of the filter, so that you can know the working status of the filter at any time. If the differential pressure value of the roughing filter exceeds 250Pa, it should be replaced immediately. The differential pressure of the intermediate filter should not exceed 330Pa, and the differential pressure of the sub-high efficiency filter should not exceed 400Pa. For medium-efficiency and sub-high-efficiency filters, they cannot be reused.
14. The high-efficiency filter is damaged to be replaced, when the pressure difference exceeds 450Pa, the airflow velocity of the air outlet surface is reduced to ***, the initial and intermediate filters can be replaced first, if it has not changed, the high-efficiency filter needs to be replaced, and if these situations do not occur, the high-efficiency filter should be replaced once within 1-2 years.
15. Replace the filter, the primary and intermediate filters can be replaced without using the fan, and the high-efficiency filter must stop the fan before it can be replaced. During the use of primary and intermediate filters, the wind speed should be kept below 2.5m/s***, and the air speed of sub-high efficiency and high-efficiency filters should not exceed 1.5m/s.
16. After the filter is installed, the connection with the frame must be airtight.
17. According to the environment of the site to determine which filter to use, such as high humidity and high temperature environment, to use high temperature and high humidity resistant filters.
18. For biological clean rooms and pharmaceutical clean rooms, stainless steel or aluminum alloy frame filters should be selected, and wooden frame filters should not be used.
As a high-precision technology product, the air filter is easy to be damaged in the process of transportation and installation, so every step of the transportation and installation of the air filter must be done in accordance with strict requirements. After the air filter is used for a period of time, because too much dust will be captured, the efficiency and resistance will decrease, if the effect of air supply is far from meeting the requirements, the air filter should be replaced in time.
The article is reprinted from the Internet, if there is any infringement, please contact to delete.