The safe use of centrifuges in the laboratory is a commonplace, but there will still be accidents, so how do we start with our own safety awareness and improve the safe use of the centrifuge.
As a centrifuge technician, safe use of the centrifuge should start with the correct installation of the centrifuge.
Power supply voltage: The voltage fluctuation should meet the national standard within +10%, otherwise some manufacturers' centrifuges will not operate normally. If the voltage fluctuates above this, it is recommended to use a voltage regulator to comply with this grid.
The ground wire should be strong: the wiring of the power supply of the room should meet the requirements. China is a three-phase four-wire system. The three-phase is the three-phase in industrial power. When three-phase electricity is used, the neutral line is separated from the ground line. More importantly, whether it is three-phase industrial power or not, the general single-phase power is good, and the ground line should be reliable to avoid leakage. The ground wire cannot be connected to the heating pipe or the water pipe.
The ground should be flat and firm: for large centrifuges, the floor should be securely moved at the installation site to ensure that the rotor of the centrifuge is working properly and not recessed. The ground at the installation site should be flat and firm.
Find a good level: find a more accurate small level, open the centrifuge cover, find the level on the main shaft, and adjust the level of the adjustment bolts next to the four casters to find the level, pay attention to the fact that l can not fall.
After the centrifuge installation has no problem, it is necessary to consider the operation of the centrifuge in the later stage. The operation should also pay attention to it. In addition to understanding the instructions of the centrifuge manual, it is necessary to understand the centrifuge loading. The main concern of the loading is balance.
In the design and manufacture of the centrifuge, the imbalance caused by the machining error of the rotor has been remedied by the dynamic balance test, but all centrifuges have their allowable unbalanced load. In order to compete with other manufacturers for the maximum unbalance limit allowed by the centrifuge, the centrifuge manufacturer should try to give a larger value o. At this larger value, the centrifuge can be operated, but the imbalance force generated at this time The bearing and the bracket are suddenly impacted at n times per minute, and the centrifuge is damaged. Therefore, the user is trying to find a good balance and centrifugation for those expensive centrifuges, which is good for the life of the centrifuge.
The above briefly explains the installation and use of the centrifuge. The next step is to clean up. There may be doubts. What is the relationship between this cleaning and safe use? In fact, this is the case, the cleaning is for the safe use of the centrifuge without pollution.
For example, the water in the centrifugal chamber is cleaned and used for cooling. Due to the moisture of the air, frost is formed in the centrifugal chamber, and the water is frosted into water after the shutdown. Most foreign low-speed large-capacity centrifuges have no drainage holes, and the water in the centrifugal chamber is more and more accumulated. At this point, the user should remove the rotor and clean up the accumulated water. Reinstall the rotor.
The above three points are the safety precautions for the basic centrifuge. Of course, the centrifuge market is booming now, and the special centrifuges are more diverse. Therefore, as a centrifuge technician reminds you that after you purchase a centrifuge, it must be To communicate more with the centrifuge manufacturers, and to ask more and learn more, always avoid unnecessary unnecessary errors.
