1. All kinds of air filters, high efficiency air filters in the installation, do not allow hand tear or open the packaging bag or packaging film; should be strictly in accordance with the direction of high efficiency filter box marked on the standard storage of air filters; Filter handling process, should be lightly, gently, to avoid severe vibration and collision.
2. For high efficiency filter, the installation direction must be correct: with corrugated board combination filter in vertical installation, the corrugated board must be perpendicular to the ground; filter in the vertical and the connection between the frame is strictly prohibited leakage, deformation, damage And leakage of plastic, etc., must be installed to ensure clean wall, no dust, oil, corrosion and debris and so on. .
3. Test method: observation or white silk cloth to check.
4. High efficiency filter Before installation, the clean room must be cleaned, wiped clean, clean air inside the system if dust, should be cleaned again, wipe clean, to clean requirements. If a high efficiency filter is installed in the technical interlayer or suspended ceiling, the technical layer or the suspended ceiling should also be cleaned and wiped cleanly.
5. The transport and storage of high efficiency filters should be in accordance with the direction of the manufacturer’s logo. In the transport process, should be gently, to prevent severe vibration and collision, not forcible loading and unloading.
6. High efficiency filter Before installation, the packaging must be unpacked on the installation site for visual inspection, including: filter paper, sealant and frame for damage; side length, diagonal and thickness dimensions meet the requirements; frame with or without glitches Rust (metal frame); whether the product certification, technical performance is in line with design requirements. And then in accordance with the national standard “clean room construction and acceptance of norms” [JGJ71-90] the provisions of the method of inspection, qualified should be installed immediately.
7. Cleanliness level is equal to or higher than 100 clean room with high efficiency filter, before installation should be “clean room construction and acceptance of norms” method of leak detection, and meet the requirements.
8. Install the high efficiency filter, the arrow on the frame should be consistent with the direction of air flow; when installed vertically, the direction of crease paper should be perpendicular to the ground.
9. Install rough effect flat-plate or folding filter, should be galvanized mesh surface in the direction of the wind back. Install the bag filter, the length of the filter bag should be perpendicular to the ground direction, not to the direction of the bag parallel to the ground installation;
10. Under normal conditions of use, flat, folded rough effect or in effect filter, usually 1-3 month replacement time, lax areas, can be replaced after the media can be cleaned with a detergent soaked in water, Rinse, and then dry and then put on; generally rinse 1-2 times, you must replace the new filter to ensure the filtration efficiency.
11. For bag-type coarse or medium efficiency filter, under normal conditions of use (average 8 hours a day, continuous operation), the general use of 7-9 weeks should be replaced with new.
12. For sub-efficient filters, under normal conditions of use (average daily 8 hours, continuous operation), the general use of 5 – 6 months, should also be replaced.
13. For the above filters, if the pressure before and after the filter table or differential pressure sensor, the coarse filter, when the pressure difference greater than 250Pa, it must be replaced; for the efficiency filter, the pressure is greater than 330Pa, must be replaced; for sub-efficient filter, when the pressure difference is greater than 400Pa, it must be replaced, and the original filter can not be reused;
14. For high efficiency filters, when the resistance of the filter is greater than 450 Pa; or when the air velocity of the outlet air surface is reduced to a minimum, the air flow velocity can not be increased even after the coarse effect or medium efficiency filter is replaced; The filter surface can not repair the leakage situation, are required to replace the new high efficiency filter; if not the above conditions, generally based on the use of environmental conditions, 1-2 years replacement time.
15. In order to give full play to the role of filters in the selection and use of the process, the filter face wind speed, rough efficiency, efficiency filter should not be greater than 2.5m / s, sub-high efficiency filters and high efficiency filter should not be greater than 1.5 M / s, this will not only help to ensure the efficiency of the filter, but also can extend the filter life, cost savings.
16. When the equipment is running, generally do not replace the filter; if the filter has been replaced to the replacement period can not be replaced, then only in the case of non-stop fan to replace coarse and medium efficiency filters; sub-efficient filters and high efficiency filter The air supply must be stopped before replacement.
17. Filter and connection between the framework of the gasket must be tight, no leakage, in order to ensure the filtering effect.
18. To be used for high humidity, high temperature environment, high efficiency filter, you must select the high temperature, high humidity filter paper and partition plate, frame material to meet production requirements.
19. biological clean room and medical clean room, must use the metal frame filter, and its surface should not rust, do not allow the use of wood frame filter, to prevent bacteria, affect the product quality.
