The key to pay attention to when using double-sided ultra-clean workbench

Double single-sided ultra-clean workbench is widely used in medical and health, bio-pharmaceutical, food, medical science test, optical, electronic, sterile room test, sterile microbial inspection, plant tissue culture, etc. And the production department. It is a one-way flow type air purification equipment that supplies part of the dust-free aseptic working environment. It can also be connected to the installation line with the advantages of low noise and mobility. It is a kind of air purification equipment which is highly versatile for supplying high-purity working environment. Its application has a good effect on improving process conditions, improving product quality and increasing yield. This article focuses on the key points to be aware of when using a single-sided, ultra-clean work bench.

The ultra-clean power supply adopts three-phase four-wire power, and there is a zero line in between. It is connected to the machine casing and should be connected to the ground wire. The other three wires are phase lines, and the operating voltage is 380V. There is a certain order in the three-wire access circuit. If the wire is connected incorrectly, the wind timing will be reversed. At this time, the sound is normal or slightly abnormal. The front of the clean bench is windless (the alcohol lamp flame can be used to investigate the dynamic, it should not be tested for a long time). Blocking the power supply can only be solved by simply connecting the two ends of the wire between them. If the three-phase line is only connected to two phases, or one of the three phases is in poor contact, the sound of the machine is very abnormal. The power supply should be intercepted and carefully cleaned, otherwise the motor will be burned. This knowledge should be explained to the operators when they start using the clean platform, and the removal should not result in the loss and loss.

The air inlet of the ultra-clean platform is below the reverse side or the front side. The metal mesh cover has a general foam plastic sheet or non-woven fabric to block large particles of dust. It should be viewed, removed and washed frequently, such as aging of foamed plastic, and replaced in time. In addition to the air inlet, if there is a leaking pore, it should be tightly sealed, such as tape, cotton, glued paper, etc. The metal mesh cover on the front of the workbench is a super-filter. The super-filter can also be replaced. If it is used for a long time, the dust particles are blocked, the wind speed is reduced, and when the aseptic operation cannot be ensured, it can be replaced with a new one.

Ultraviolet lamps can also be hoisted on the ultra-clean workbench, but should be installed outside the illuminator and staggered with the arrangement of the illuminators so that they do not obstruct the illumination during operation. If the UV lamp is installed inside the lighting cover (glass plate), it is useless. The ultraviolet light cannot penetrate the glass. Its lamp is quartz glass instead of silicate glass.

The inoculation room is intended to be concise, and items that are not directly related to the work of this room cannot be placed in order to adhere to the aseptic condition. The air in the inoculation room should be absolutely isolated from the outside air, and the reserved ventilation holes should be sealed as much as possible. The venting channel can be provided with upper and lower louvers, and the area of ​​the louver should be slightly larger. It is necessary to cover 4 layers of gauze for simple dust filtering. After a day's work, the window can be ventilated and then sealed. In general, it is clean, dust-free and sterile, and the air is fresh and suitable for operation. The gauze covering the louver should be changed frequently. However, the above various methods are only ideal design schemes, and it is often difficult to fully implement them. In fact, only strict aseptic operation procedures are used. In the indoors where the doors and windows are open, there is a maintenance of the clean bench, and the pollution rate of the inoculation is still controllable in production. level.

The double-sided ultra-clean workbench has a long service life and clean air. In the temperate zone, the clean bench can be used in the general laboratory. However, in the tropical or subtropical zone, the area containing pollen or dust in the atmosphere should be placed in a good indoor room with double doors. . Under no circumstances should the inlet hood of the clean bench be facing the open door or window to avoid affecting the service life of the filter.

The sterile room should be periodically sprayed with 70% alcohol or 0.5% phenol to reduce dust and disinfection, wipe the countertops and utensils with 2% Xinjieer (70% alcohol is also available), cooperate with UV sterilization lamps (open for more than 15 minutes each time), etc. Sterilization means to make the sterile room often adhere to aseptic conditions. The inside of the inoculation box should also be equipped with an ultraviolet lamp. It should be sterilized by turning on the light for more than 15 minutes before use. However, there is still bacteria in the place where it is not shining. When the ultraviolet lamp is turned on for a long time, oxygen molecules in the air can be excited to form ozone molecules. This gas has a strong bactericidal action and can sterilize cockroaches that are not directly irradiated by ultraviolet rays. Because ozone is harmful to health, you should remove the UV lamp before entering the operation, and you can enter it after more than ten minutes.