Fault Detection and Cleaning Interpretation of Benchtop Low Speed ​​Centrifuge

First, the centrifuge tube provided in the bench - top low-speed centrifuge is added to the substance to be separated, and inserted into the hole of the centrifuge head. (However, the amount of material added to each centrifuge tube must be substantially equal) Close the cover, turn on the power, turn on the power switch, the power indicator lights, then select the “Timer” to the time you need to centrifuge or select The open position (the counter-clockwise final point), at this time the desktop low-speed centrifuge enters the working state, the speed adjustment is the centrifugal speed selection, and its working state is about 500-4000 rpm. You can choose the appropriate location according to your actual needs.

Particles of different densities, sizes or shapes settle in centrifugation at different speeds, so a generally spherically heterogeneous mixture can be separated by centrifugation. The benchtop low-speed centrifuge is used to further study biochemistry and separate large quantities of material. .

1. The main power indicator light is on. At this time, the degree of wear of the carbon brush should be checked. If the carbon brush wear exceeds one third of the total amount, a new carbon brush should be replaced in time.

2. When the main power indicator is off, check if the indicator fuse and the indoor distribution board fuse are blown. Also check whether the power line is in good contact. If the fuse is broken, replace the fuse and keep the circuit unblocked.

3, should also check the vacuum pump table and oil pressure indication value, if the oil pressure is too high and the host can not start, you must check whether the oil circuit is blocked, especially whether the throttle hole is smooth, if not smooth, it should be cleaned to make it smooth.

4. The bearing is damaged or the rotation is blocked. There is no oil in the bearing or there is more dirt in the bearing, which causes the frictional resistance to increase. If the motor does not reach the rated speed, the bearing should be cleaned or replaced in time.

5. There is a layer of oxide on the surface of the commutator. Even if the bump is uneven or the brush does not match the outer edge of the commutator, the speed can be reduced. The commutator and the brush should be cleaned to make the contact good.

6. If the rotor coil is short-circuited or open circuit, it can be inspected by a multimeter, and the medical centrifuge re-winds the coil. When the rotor is in use, the centrifuge tube may be broken, the sample leaks, and the rotor is damaged due to metal fatigue, overspeed, overstress, chemical corrosion, improper selection, unbalanced use of the rotor and temperature loss.

7. Clean the centrifuge chamber and rotor and dry the condensate in the chamber.

8. Open the door after use until the chamber returns to normal temperature.

9. Balance the sample before centrifugation.

10. Disinfect and sterilize after centrifugation.

11. Pre-cool the rotor if necessary, maintain and store the rotor, and pay attention to protect the counting ring at the bottom.