The best internal centrifuge system maintenance carefully every maintenance. Suspicious parts of the instrument to check and remove internal dirt and dust, long-term need to be regularly energized, so that the oil circulation and refrigeration system starts running, to ensure smooth tube. The following on the various system maintenance to be explained. 1. Drive system maintenance Drive system is the heart of the centrifuge, high-speed motor, variable speed gear, rotating bearings and sliding bearings and other parts of any abnormal phenomenon will affect the normal operation of the instrument. The main abnormalities of the drive system are as follows: abnormal sound occurs; the bearing is burned out, there is a feeling of resistance when the rotor is rotating; the canine gear is broken and the high-speed rotating shaft is interrupted; the speed is slow and the vibration is bad; Long-term operation of high-speed motor, bearing lubricant drying, the formation of a thousand mill and abnormal sound vibration and speed instability. Long-term operation of high-speed motors, carbon brush wear and tear shorten the compression spring loosening, carbon brush adhesion decreases, carbon brush and commutator (commutator) increased resistance and carbon foam pollution, can form a spark, burn commutation At the same time, the device will issue a "pop" sound of discharge, affecting the normal operation of the motor. High-speed motor package short circuit, open circuit and insulation damage can make the motor heat can not start. Appears any of the above anomalies, should immediately shut down for maintenance. 2. Maintenance of the vacuum system The current ultracentrifuge (high-speed centrifuge without a vacuum system) most of the mechanical rotary vacuum pump and oil diffusion pump two vacuum system, the degree of vacuum can reach 10-3mmHg, thus greatly reducing the friction of the air Resistance and friction caused by the temperature rise. In order to ensure the degree of vacuum in the centrifuge chamber, the surface of the pre-cooled rotor mounted on the rotating shaft must be wiped clean of moisture and fog, re-enter the centrifuge room, and then start the vacuum pump. In addition, during the long-term working of the centrifuge, some water will be mixed with the oil in the scoop pump. So in each overhaul, we should open the bottom of the vacuum pump drain switch, the water discharged, and then insert the funnel into the drain line ethylene tube, add MR-100 vacuum oil, has been added to the oil level observation center If the line height is found to be too dirty and black before drainage, it should be completely replaced and discharged. After the above maintenance, then check whether the oil pipe below the oil sump is filled with oil. If you find that the accumulation of oil, indicating mold plug is plugged, so you need to unscrew the top head screw oil mist separator, remove the top cover, remove the filter to replace the centrifugal cavity is good, in addition to vacuum pump itself performance And fault-related, but also with the instrument door seal rubber ring, shaft seal sleeve and pipe sealing. Found to be repaired immediately leaks, especially for some less attention to the site and interface should be more careful examination.
Classic Collection Laminate Flooring
Classic Collection Laminate Flooring,Edged Laminate Flooring,U-Grooved Laminate Flooring
Laminate Flooring Molding Co., Ltd. , http://www.nslaminateflooring.com