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Original Title: Common Faults and Maintenance Methods of Rotary Evaporator/Rotary Evaporator Rotary evaporator/rotary evaporator is a kind of common laboratory equipment composed of motor, distillation flask, heating pot, condenser tube and other parts, which is mainly used for continuous distillation of volatile solvents under reduced pressure, and is often used in chemistry, chemical industry,50l rotovap, biomedicine and other fields. The instrument is mainly controlled by electronics, and it may break down in the use process, which will affect the performance of the product and the results of the experiment, so the operator needs to master the solutions to the common faults of the rotary evaporator. Rotary evaporator/rotary evaporator The following are the common faults and solutions of some rotary evaporators/rotary evaporators compiled by the editor: 1. After the instrument is connected to the power switch ? The power indicator is not on: if the power line is not connected or connected incorrectly,wiped film distillation, just connect the power line; if the power switch or circuit board fails, stop using it immediately and contact the manufacturer or professional maintenance personnel. 2. The motor does not rotate : If the indicator light of the electric cabinet is on, check whether the connection of the plug inside and outside the electric cabinet is loose or broken, and then re-insert the plug to connect the broken line; if the indicator light of the electric cabinet or the digital display is not on, update the fuse or confirm that the power supply is normal; if the frequency converter is interfered by high frequency and displays "O. U." ", rotary vacuum evaporator ,thin film distillation, remove the fault according to the frequency converter manual. 3. The bath is not heated : The green indicator light in the temperature controller is on but does not heat, and the temperature controller displays "over" or "000", which can be solved by replacing the heating ring, solid-state relay or relay board, temperature controller, detecting the probe wiring or updating the probe. 4. The vacuum can't be pumped. : It is possible that there is solvent in the container, and it is limited by the pressure of the saturated ejector, so it is necessary to empty the solvent and try again after the bottle is empty; the capacity of the vacuum oil pump is reduced, so it is necessary to change the oil (water) and clean and overhaul the vacuum oil pump; the vacuum hose joint is loose, and the vacuum meter leaks, so they need to be detected and eliminated along the vacuum pipeline section by section; if there are sundries in the discharge valve and pressure control valve, they can be cleaned; If the glass wool sandwich panel is damaged, it can be renewed or repaired. 5. Rotary evaporator /Noise or noise of the rotary evaporator: It may be caused by the wear of the seal ring, which can be replaced with a new one; or it may be caused by the wear of the internal gear, lack of oil at the driving part, or motor failure. In this case, stop using it immediately and contact the manufacturer or maintenance master. 6. Poor pressure leakage and vacuum degree : It is possible that the glass rotating shaft is worn, the seal ring is worn, the seal ring is poorly installed, the sealing gasket of the decompression nozzle is aged,wiped film evaporator, and the vacuum hose is aged. It is enough to update the problem parts. 7. Abnormal rise and fall : It may be the failure of the circuit board or motor, or the wear or rust of the sliding bearing. For this, the operator should stop the operation of the instrument immediately and contact the professional maintenance personnel. Return to Sohu to see more Responsible Editor:. toptiontech.com