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What to pay attention to when using the purification workbench
What to pay attention to when using the purification workbenchThere are many ultra-clean benches used in the optical industry, and a significant number of lens contamination is due to irregularities in the operation of changing the lower protection mirror, leading to inhalation or blowing in of dust resulting in contamination of the center-protected mirror. Cutting insertion and removal of the lower protection drawer too often will also increase the risk of contamination of the middle protection mirror. In maintenance, insertion and removal of optical fibers and inspection of lenses often result in contamination of the upper protective mirror and optical path cavity. Therefore, whether the replacement of protective lenses in the field is by the norms and whether the clean bench is used correctly is quite critical to reducing the failure rate of the cutting head.Purification of the workbench site to pay attention to what problems? 1) There is a clean bench on site, but the storage environment is not set up in a special area. Often observed that there is debris on the workbench; or shared with the office area or storage area. The clean bench has not been used before the heavy source of contamination. 2) There is no filter maintenance and replacement program. Even if the frequency of use is low, there is no annual update plan for the filter. Filter operation with the disease, the clean effect is greatly reduced. 3) The lack of preparation work before the use of the clean bench. Generally need to start at least half an hour in advance. If the site air environment is very dirty, it is recommended not to open the air supply system of the bench, the internal side walls of the bench up and down, and other surfaces with alcohol wipes clean. 4) There is no suspension of nearby supporting facilities or heavy-duty machines during operation. It is necessary to switch off the fan, and exhaust system to minimize airflow. 5) Temporary alternatives bring new risks of contamination. The problems with doing this are: 1. There is a sense of chance. As a result of not having a clean environment, it is likely to skip checking the interface cavity and fiber optic connector surface cleanliness of this critical step. 2. Cross-contamination: there is a large amount of metal dust on the surface of the cutting head, which cross-contaminates the fiber optic head after contact with the plastic bag and thus contaminates the cutting head lens. 6) Insufficient number of purification workbench or after-sales personnel quality awareness is weak. Workbench in a region with several customers with a. Normally, it is placed in the office, the volume is large. Usually placed in the office, the volume is large, inconvenient to transport, sometimes in a hurry lazy to move. |
