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Use and Maintenance of Clean Benches
Use and Maintenance of Clean BenchesThe clean bench is a one-way flow air purification equipment that provides a local dust-free and sterile working environment. It is widely used in the scientific research and production departments of medicine and health, biopharmaceutical, food, medical science experiments, optics, electronics, aseptic chamber experiments, aseptic microbiological tests, plant histoculture inoculation, etc., which need local clean and aseptic working environment. It has the advantages of low noise, movable, strong versatility, and so on.Working Principle: The principle of clean bench is in a specific space, the indoor air through the pre-filter primary filtration, pressed by a small centrifugal fan into the static pressure box, and then through the high-efficiency air filter secondary filtration, from the high-efficiency air filter out of the wind surface of the clean airflow has a certain and uniform cross-section of the wind speed, you can exclude the original air of the work area, dust particles, and solvents away, to form a sterile and highly clean working environment. Precautions for use: Some personnel in the process of using clean workbench often neglect some details, which leads to the use of workbench contamination. Therefore, we should pay attention to the following issues when using the clean bench: 1, a clean workbench must be used in a clean room, otherwise it can not meet the purification requirements. If there is no condition, then also in the environment of cleanroom use. 2, each use of clean workbench before the table surface of the workbench for an alcohol cleaning, and then turn on the clean workbench fan and ultraviolet lamps, 30 minutes before operation. Many people think that every time before using they table surface cleaning, there will be no problem, it is recommended that everything is done according to the most rigorous requirements, and to them. 3, to buy a well-known brand of clean bench, reliable quality, do not buy low-priced products, completely unable to achieve the purification level. 4, each time you use the clean bench to keep only the necessary items, excess items will affect the effect of air purification flow. 5, regularly check the outlet wind speed, if the wind speed is lower than the factory-specified value, you should replace the filter, replace the filter, with a dust particle counter test qualified to use. 6, at least one week on the clean bench for a thorough cleaning. Maintenance points: 1, according to the actual use of the situation, regularly remove the primary filter cleaning, the cleaning cycle is generally 3 ~ 6 months. (If not washed for a long time, the accumulation of dust will affect the lack of air intake and reduce the clean effect). 2, when the normal replacement or cleaning of the primary air filter, still can not reach the ideal cross-section of the wind speed, the fan should be adjusted to the working voltage (rotating knob), to achieve the ideal uniform wind speed (the new workbench start to use the fan working voltage adjustment to 80V ~ 90V can be). 3. Generally speaking, when the fan operating voltage is adjusted to the highest point after eighteen months of use, and the ideal wind speed still cannot be achieved, it means that the high-efficiency air filter has accumulated too much dust (the holes in the filter material have been basically blocked, and should be renewed in time), and the general period of use of the high-efficiency air filter is eighteen months. 4. When replacing the high-efficiency air filter, attention should be paid to the correct size of the model specification (the original manufacturer's configuration), installed in the direction of the air inlet according to the arrow, and attention should be paid to the sealing of the filter periphery, and there is no leakage phenomenon. |
