Views: 0 Author: Site Editor Publish Time: 2022-06-06 Origin: Site
1. Great vibration should be avoided as much as possible.
2. It is strictly forbidden to bring dust-producing items into the purification area.
3. According to the cleanliness of the environment, regularly (usually 3 to 6 months) remove the filter material (non-woven fabric) in the primary filter for cleaning (when the filter material contains dust and turns black, it should generally be cleaned or replaced) .
4. Sterilize the environment regularly (usually once a week), and often wipe the UV lamp with gauze dipped in organic solvents such as alcohol or acetone, so as not to affect the sterilization effect.
5. Periodically (usually twice a month), measure the cleanliness of the clean area cleaned with this product with a particle counter. When the measured cleanliness does not match the required cleanliness, the cause should be found out (whether there is leakage, whether the high-efficiency filter fails, etc.). If the high-efficiency filter has failed, it should be replaced with a new high-efficiency filter.
6. When replacing the high-efficiency filter, first remove the primary filter and air supply unit, and then remove the bead, then take out the failed high-efficiency filter, replace it with a new high-efficiency filter, and put the removed one back in place. When replacing the high-efficiency filter, pay attention to the following:
a. When handling (unpacking, transporting and installing, etc.) the new high-efficiency filter, special care should be taken not to break the filter paper.
b. Before installation, carefully check whether the high-efficiency filter has leaks due to transportation and other reasons (point the filter to the bright place and check it with the naked eye).
c. When installing the high-efficiency filter, the arrow mark on the high-efficiency filter should point to the air outlet.
d. Pay attention to sealing when installing the high-efficiency filter.
e. When tightening the frame-pressing screws, the force should be uniform and appropriate, not only to ensure the stable and reliable fixation and sealing of the high-efficiency filter, but also to avoid leakage caused by deformation of the high-efficiency filter.
f. After replacing the high-efficiency filter, the dust particle counter should be used for leak detection, especially the scanning inspection around the frame of the high-efficiency filter.
g. The primary and high efficiency filters are not covered by the warranty.
7. The electrical maintenance should be carried out by professional technicians in the electrical field according to the electrical schematic diagram and electrical wiring diagram of this product.
The clean environment of the ultra-clean workbench is formed by the flow of clean air (filtered air) in a set direction in a specific space. According to the airflow direction, the existing ultra-clean workbenches can be divided into vertical type, inside-out type and lateral type. Considering the quality of operation and the impact on the environment, the vertical type is superior. The clean air provided by the air supply filter plate descends through the operation area at a specific speed, and is divided at about the middle of the operation area, and is sucked by the front air suction hole and the rear suction window, and the air sucked in the front and rear parts of the lower part of the operation area is mixed. Together, and pumped into the rear positive pressure zone by the blower, in the upper part of the machine, 30% of the gas is discharged from the top through the exhaust filter plate, and about 70% of the gas is re-entered into the operating area through the oxygen supply filter plate. To supplement the air discharged from the exhaust port, the same volume of air is supplemented from the room air through the operating port. This air does not enter the operating area, it just forms an air barrier.
The ultra-clean workbench should be irradiated with ultraviolet light for 30-40 minutes before use, and check that various openable doors and windows around the operation area are in the working position. The operation is carried out in the center of the operation area, which is a safer area by design. Before operating, you should have a preliminary understanding of the experimental materials, and at the same time understand the performance and safety of the equipment you use. Strictly enforce laboratory safety procedures. The use of specific pathogens in any clean bench must be assessed for safety. If the experimental material will cause environmental pollution to the surrounding environment, it should be avoided in the model without exhaust filter plate, because the operation in flowing air is no different from the diffuser. Any advanced equipment cannot guarantee the success of the experiment. The use of the ultra-clean workbench in the animal quarantine laboratory is for the purpose of sterility and avoiding cross-contamination, so skilled operation and clear aseptic essentials are indispensable.
The advantages of the ultra-clean workbench are that the operation is convenient and comfortable, the work efficiency is high, the preparation time is short, and it can be operated for more than 30 minutes after starting up, and it can basically be used at any time. In factory production, the inoculation workload is very large, and the clean bench is an ideal equipment when it needs to work for a long time.
The ultra-clean workbench is powered by a three-phase motor with a power of about 145-260W. The air is blown out through a "filter" composed of a special micro-cellular foam sheet laminated to form a continuous dust-free The ultra-clean air laminar flow of bacteria, the so-called "high-efficiency special air", removes dust, fungi and bacterial spores larger than 0.3 μm, etc. The flow rate of ultra-clean air is 24~30m/min, which is enough to prevent pollution caused by possible disturbance of nearby air, and this flow rate will not hinder the use of alcohol lamps or Bunsen burners to burn and disinfect instruments. The staff operates under such sterile conditions to keep sterile materials free from contamination during the transfer inoculation process. But in the event of a power outage in the middle of an operation, materials exposed to unfiltered air are not immune to contamination. At this time, the work should be terminated quickly, and a mark should be made on the bottle. If the material in the bottle is in the proliferation stage, it will not be used for proliferation in the future and will be transferred to rooting culture. If it is a general production material, it can also be discarded because it is extremely abundant. If it is in the rooting process, it can be reserved for later planting.
