Let’s discuss the differences between high-speed and low-speed refrigerated centrifuges from the perspectives of maintenance and features.

　　 Frozen centrifuge There are differences between high-speed and low-speed refrigerated centrifuges. Today, the editor will provide a brief introduction to the maintenance differences and features of high-speed and low-speed refrigerated centrifuges!

　　The high-speed refrigerated centrifuge should be regularly inspected for cracks, aging, or other signs of damage in the rotor and the centrifuge tubes used for experiments; if any such issues are found, the components must be replaced promptly. To ensure the safety and effectiveness of the high-speed refrigerated centrifuge, it must be placed on a sturdy, level work surface. No items should be placed on the plastic cover door. Samples must be loaded symmetrically, and before starting the high-speed refrigerated centrifuge, make sure that all nuts have been securely tightened.

　　After the experiment is completed, the high-speed refrigerated centrifuge must be thoroughly cleaned to prevent corrosion. If the specific gravity of the sample exceeds 1.2 g/cm³, the maximum rotational speed n should be calculated using the following formula: n = nmax × √(1.2 / sample specific gravity). When the length of the motor carbon brushes in the centrifuge falls below 6 mm, they must be replaced promptly. Do not open the lid of the centrifuge before it has come to a complete stop. The high-speed refrigerated centrifuge must be reliably grounded. After the experiment is finished, please turn off the power switch located at the rear of the high-speed refrigerated centrifuge. When unplugging the power cord from the centrifuge, don't forget to also turn on the power switch at the rear of the centrifuge. During daily use, be sure to comply with requirements 5.6 and 5.7. Always follow the prescribed startup and shutdown procedures for the high-speed refrigerated centrifuge when turning it off.

　　Features of the High-Speed Refrigerated Centrifuge:

　　◆ Fully automatic rotor identification system.

　　◆ Large-screen LCD display shows both set parameters and operating parameters simultaneously.

　　◆ Automatic storage of host and rotor operating parameters; automatic calculation and alarm for rotor service life.

　　◆ It adopts a high-torque brushless inverter motor for direct drive, offering large starting torque and short acceleration time.

　　◆ Equipped with multiple protection features including imbalance detection, self-locking door cover, overtemperature protection, and overspeed protection to ensure the safety of both personnel and machinery.

　　◆ You can set the RCF value directly for centrifugation without needing to set the speed.

　　◆ Employs an imported fluorine-free compressor unit (refrigerant R404a) that meets environmental protection requirements.

　　Having reviewed the maintenance and features of the high-speed refrigerated centrifuge above, let’s now turn to low-speed refrigerated centrifuges!

　　Features of low-speed refrigerated centrifuges:

　　◆Advanced performance

　　Microcomputer control; DC inverter adjustment, brushless DC motor, no carbon powder contamination, low noise, and minimal vibration.

　　◆Easy to operate

　　Touch panel, digital display, programmable operation.

　　◆ Wide range of applications

　　Suitable for the separation of radioimmunoassay, biochemistry, and blood products.

　　The maintenance and care for low-speed refrigerated centrifuges are as follows:

　　1. Regular maintenance: As with the maintenance of other medical devices, in addition to routine inspections and repairs of electrical circuits, electronic components, and mechanical moving parts, pay attention to whether various indicator lights are damaged or aged.

　　2. The latch on the centrifuge lid should be checked regularly to ensure it remains flexible and prevents forceful opening or closing. If any signs of poor contact are detected, the latch should be promptly repaired or replaced. For common faults, pay close attention and observe them carefully on a daily basis, and address them promptly.

　　3. Ensure that the centrifuge tubes are symmetrically balanced. Although the centrifuge is equipped with a secondary vibration-damping system, if the sample tubes placed inside the centrifuge chamber are unbalanced, it can cause the centrifuge to shake and shift. After stopping the machine and resetting it, carefully check whether the instrument is functioning properly.

　　4. Properly record the operating status of the centrifuge and the duration of each run. Document the causes of instrument malfunctions, the troubleshooting methods used, and the timing of such interventions to ensure the instrument remains in optimal working condition.

　　Those are the two main differences between high-speed and low-speed refrigerated centrifuges that our editor has shared with you today. Due to space limitations, we’ll delve deeper into more information about refrigerated centrifuges in our next session!