Analysis of Common Faults in High-Speed Centrifuge Motors
Release time:
2017-08-03
Overview:
High-speed centrifuge Today, the use of high-speed centrifuges is becoming increasingly convenient and widespread—almost every laboratory in various research institutions now has one. Think about it: if each department were to equip itself with a piece of testing equipment worth over a million dollars, the maintenance costs alone would be astronomical, inevitably leading to a significant degree of waste. Meanwhile, while some large, expensive instruments lie idle, many other research institutions still lack the funds to purchase and utilize these scientific devices. This situation not only results in wasted resources but also creates obstacles to research and innovation.
Features of a high-speed centrifuge:
① Microcomputer control, digital display.
② Variable-frequency brushless motor, touch panel.
③ Easy to operate and quiet.
④ Equipped with a variety of rotors for user selection and featuring high separation efficiency.
Analysis of Common Faults in High-Speed Centrifuge Motors:
One, High-speed centrifuge After power is applied, the motor fails to rotate: First, check the power cord, plug, and socket. If any of these components are damaged, they should be replaced. If no damage is found, next inspect the band switch or rheostat to see whether they are damaged or if their connections have come loose. If either is damaged or disconnected, replace the faulty component and re-solder the connections. If no issues are detected, then check the motor’s field coil for open circuits or internal breaks. If the coil’s connections have come loose, they can be re-soldered. However, if the coil itself has an internal open circuit, the only option is to rewind the coil entirely.
2. If the motor speed of the high-speed centrifuge fails to reach its rated speed: First, inspect the bearings. If the bearings are damaged, replace them. If the bearings are low on oil or excessively contaminated with dirt, clean the bearings and replenish them with grease. Next, check the commutator surface for any abnormalities and ensure that the brush-to-commutator contact is properly aligned. If there are abnormalities on the commutator surface—such as a layer of oxide—use fine sandpaper to carefully grind it down. If the commutator and brush do not make proper contact, adjust them until they achieve good contact. If none of the above issues are found, check the rotor windings for short circuits. If a short circuit is detected, rewind the windings.
3. The high-speed centrifuge exhibits severe vibration and loud noise: Check whether there is an imbalance issue. Verify that the bolts securing the machine are not loose; if they are, tighten them. Inspect the bearings for damage or bending; if either is found, replace the bearings. If the machine’s outer casing is deformed or improperly positioned, causing friction, adjust it accordingly.
4. When the temperature is low, the low-speed setting of a high-speed centrifuge cannot be started: This is because the lubricating oil has solidified or become deteriorated, dried up, and stuck. Initially, you can manually help restart the rotation or, after cleaning it, proactively re-lubricate it.
In addition to their widespread use in industrial production processes, high-speed centrifuges are now also extensively employed as laboratory equipment. Thanks to the use of DC variable-frequency motors or brushless DC motors, these centrifuges generally offer adjustable speeds and can achieve relatively high rotational velocities. High-speed centrifuge Widely used in clinical medicine, biochemistry, genetic engineering, immunology, and other fields, it is an essential instrument for centrifugal separation in hospitals at all levels, research institutions, and higher education institutions.
Features of a high-speed centrifuge:
① Microcomputer control, digital display.
② Variable-frequency brushless motor, touch panel.
③ Easy to operate and quiet.
④ Equipped with a variety of rotors for user selection and featuring high separation efficiency.
Analysis of Common Faults in High-Speed Centrifuge Motors:
One, High-speed centrifuge After power is applied, the motor fails to rotate: First, check the power cord, plug, and socket. If any of these components are damaged, they should be replaced. If no damage is found, next inspect the band switch or rheostat to see whether they are damaged or if their connections have come loose. If either is damaged or disconnected, replace the faulty component and re-solder the connections. If no issues are detected, then check the motor’s field coil for open circuits or internal breaks. If the coil’s connections have come loose, they can be re-soldered. However, if the coil itself has an internal open circuit, the only option is to rewind the coil entirely.
2. If the motor speed of the high-speed centrifuge fails to reach its rated speed: First, inspect the bearings. If the bearings are damaged, replace them. If the bearings are low on oil or excessively contaminated with dirt, clean the bearings and replenish them with grease. Next, check the commutator surface for any abnormalities and ensure that the brush-to-commutator contact is properly aligned. If there are abnormalities on the commutator surface—such as a layer of oxide—use fine sandpaper to carefully grind it down. If the commutator and brush do not make proper contact, adjust them until they achieve good contact. If none of the above issues are found, check the rotor windings for short circuits. If a short circuit is detected, rewind the windings.
3. The high-speed centrifuge exhibits severe vibration and loud noise: Check whether there is an imbalance issue. Verify that the bolts securing the machine are not loose; if they are, tighten them. Inspect the bearings for damage or bending; if either is found, replace the bearings. If the machine’s outer casing is deformed or improperly positioned, causing friction, adjust it accordingly.
4. When the temperature is low, the low-speed setting of a high-speed centrifuge cannot be started: This is because the lubricating oil has solidified or become deteriorated, dried up, and stuck. Initially, you can manually help restart the rotation or, after cleaning it, proactively re-lubricate it.
In addition to their widespread use in industrial production processes, high-speed centrifuges are now also extensively employed as laboratory equipment. Thanks to the use of DC variable-frequency motors or brushless DC motors, these centrifuges generally offer adjustable speeds and can achieve relatively high rotational velocities. High-speed centrifuge Widely used in clinical medicine, biochemistry, genetic engineering, immunology, and other fields, it is an essential instrument for centrifugal separation in hospitals at all levels, research institutions, and higher education institutions.
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