working principle
Working principle of A2 type biological safety cabinet: After the air enters the negative pressure air passage from the front fresh air outlet and is fully mixed with the air in the cabinet, the fan is sent to the static pressure tank, filtered by the high efficiency filter and enters the operation area in a vertical laminar flow state. The left and right walls of the operation area are all negative pressure air passages, so that the working area and the external environment form a double layer of air curtain and box. At the same time, the working area is surrounded by negative pressure to ensure that the sample does not leak. The airflow in the operating area is mixed by the air entering the fresh air inlet through the negative pressure air passage due to the action of the exhaust fan, and some of the mixed gas (about 30%) is sent by the fan. The static pressure tank is recycled, and the remaining mixed gas (about 70%) is filtered through the exhaust high-efficiency filter and discharged out of the cabinet.
Working principle of B2 type biological safety cabinet: After the air is filtered by the pre-filter, it is sent to the static pressure box by the fan, and filtered by the high-efficiency filter to enter the operation area. The left and right walls of the operation area are all negative pressure air passages, so that the working area and the external environment form a double layer of air curtain and box. At the same time, the working area is surrounded by negative pressure to ensure that the sample does not leak. The airflow in the operating area is filtered by the exhaust air duct through the exhaust air high-efficiency filter and discharged into the exhaust passage due to the action of the exhaust fan.
Use environment and conditions
Temperature: 5 ° C ~ 35 ° C
Relative humidity: no more than 85% (at +35 ° C)
Atmospheric pressure: 86KPa~106KPa
Zui large dust concentration: 3500 particles / L (dust particle size is not less than 0.5μm)
Power supply: 220V ± 10%, 50HZ ± 2HZ
Installation adjustment
1. The biosafety cabinet should be placed in a clean factory or in a clean environment.
2. The location of the biosafety cabinet should be kept away from dust sources and sources.
3. During the process of unpacking and seating the biological safety cabinet, care should be taken to avoid it.
4. Read this instruction manual carefully before starting work.
Operation
1. The power supply of the biosafety cabinet is 220V, 50Hz. There is a grounding mark at the back of the cabinet. It must be reliably grounded before use to ensure safety. The biosafety cabinet is equipped with a fuse. The power cord is located at the lower right end of the cabinet. Next to the exit is the fuse for the total power supply of the equipment.
2. Please check whether the power supply of each part is connected before use. If there is an external fan, please check if the external fan is installed.
3. Turn on the power and press the [Power] button on the control panel. The system is powered on and ready to go.
4. Press the [Bactericidal] button to turn on the UV lamp for 30 minutes and then turn off the UV lamp. (Note: the glass door should be closed at this time)
5. Open the glass door to the signage.
6. Press the [Fan] button to turn on the fan for about 15 minutes to make the operation area reach the specified cleanliness.
7. Press the [Lighting] button to turn on the light and the operator can work.
8. After the work is finished, the fan and glass door should be closed and the UV lamp should be turned on for 30 minutes to kill the bacteria remaining inside the safety cabinet.
9. Turn off the UV lamp, open the glass door, and clean the work surface.
10. Turn off the power.
maintenance
1. The operator should carefully read the instruction manual of the safety cabinet and strictly follow the instructions in the manual.
2. Routine maintenance: operate the safety cabinet according to the power supply, check whether the functions of each part of the safety cabinet are normal; wipe the surface of the equipment and the surface of the operation area with the detergent dissolved in water; clean the box with a flexible detergent or special detergent for glass External surface and glass; disinfection of the operating room.
3, regular maintenance: every three months to carry out a comprehensive inspection of the equipment, careful maintenance. Thoroughly clean the equipment and disinfect it; check whether the parts are flexible and open; check whether the functions of each part are normal.
4. Generally, when the working voltage of the fan is adjusted to the high point of Zui after using the 18th, if the ideal wind speed is still not reached, it means that the high-efficiency filter has too much dust (the filter hole on the filter material has been basically blocked, and it should be updated in time). ), the general high efficiency air filter has a service life of 18 months.
5. When replacing the high-efficiency air filter, pay attention to the correctness of the model size (original manufacturer configuration), press the arrow wind direction device, and pay attention to the perimeter seal of the filter, no leakage occurs.
Special note: Replacement and maintenance of electrical components must be carried out by a qualified electrician under safe conditions.
General faults, causes, and troubleshooting
Fault phenomenon | the reason | Discharge method |
The main power switch does not close, automatic tripping | 1. The fan is stuck and the motor is blocked, or the line is short-circuited. | 1. Adjust the position of the fan shaft, or replace the impeller and bearing to check whether the line is intact. 2. Check the insulation resistance of the circuit and components to the outer casing according to the circuit diagram, and repair the insulation fault. |
Low wind speed | 1. High efficiency filter failure. | 1. Replace the high efficiency filter. |
The fan does not turn | 1. The contactor does not work. 2. The fan power fuse has been blown. | 1. Check if the contactor circuit is normal. 2. Replace the fuse. |
Fluorescent light is not lit | 1. The lamp or relay is damaged. 2. The lamp power fuse has been blown. | 1. Replace the lamp or relay. 2. Replace the fuse. |
Shanghai Sujing Industrial Co., Ltd. is located at No. 6, Lane 358, Wencheng Road, Songjiang New City, Shanghai. It is one of the leading manufacturers in the purification equipment industry in East China. It can provide professional air purification system engineering design, construction, testing and technical services for microelectronics, biomedicine, hospital operating room, fiber optic cable, food and beverage, precision instruments, semiconductor and new materials applications according to national GMP requirements.
The company's purification workbench series, air shower room series, fume hood series, biosafety cabinet series are widely used in medical and health, electronics, pharmaceutical, biological, food, agriculture, forestry, animal husbandry and veterinary, inspection and quarantine, aerospace, automobile manufacturing, Precision instruments, universities and research institutes enjoy a high reputation in the domestic and Southeast Asian markets.
Shanghai Sujing Industrial Co., Ltd.
If you have any needs, you can always pass with me, thank you very much for your support to Sujing, look forward to working with you.
have a pleasant workday!
Thank you & Best regard !
SUJING—JINGHUA
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[Package Dimension] 5cm 4pieces/box
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