Several Common Faults And Troubleshooting Methods Of Rotary Evaporator

1. Evaporator bottle does not rotate: If the evaporator bottle does not rotate, first check whether the motor and transmission system are working properly. You can try adjusting the motor speed or replacing the motor. In addition, it is necessary to check whether the drive belt is damaged or loose, and if there are any problems, they need to be repaired or replaced.

2. Pump unable to vacuum: If the pump is unable to vacuum, first check if the pump is working properly. It is possible to check whether the connection pipeline of the pump is leaking or blocked, and ensure that the oil volume of the pump is sufficient. If the problem persists, it may be necessary to clean the pump or replace the seal.

3. Water bath temperature too high or too low: If the water bath temperature exceeds the set range, first check whether the temperature controller in the water bath is set correctly. You can also check whether the heating elements of the water bath are working properly, and if there are any problems, they need to be repaired or replaced.

4. Unstable vacuum degree: If the vacuum degree is unstable, first check whether the vacuum gauge is working properly. It is possible to check whether the connection pipeline between the vacuum gauge and the rotary evaporator is leaking or loose, and ensure that the seal is functioning properly. Additionally, it is possible to check whether the vacuum gauge itself needs to be cleaned or calibrated.

5. Solvent cannot evaporate: If the solvent cannot evaporate, first check whether the flow rate and concentration of the solvent are correct. The feeding speed and vacuum degree of the rotary evaporator can be adjusted to better evaporate the solvent. Additionally, it is possible to check whether the evaporation bottle of the rotary evaporator needs to be cleaned or replaced.

6. The solution cannot be evenly applied to the inner wall of the evaporator bottle: If the solution cannot be evenly applied to the inner wall of the evaporator bottle, it may be due to the concentration of the solution being too high or too thick, or the presence of dirt on the inner wall of the evaporator bottle. You can try reducing the concentration of the solution or diluting it, and clean the inner wall of the evaporation bottle to ensure its smooth surface.

7. Uneven temperature of hot water bath: If the temperature of the hot water bath is uneven, first check whether the water in the bath is sufficient. You can try adjusting the position of the heating element to heat the water bath more evenly. If the problem persists, it may be necessary to replace the heating element or use a larger water bath.

8. Rotating evaporator produces noise: If the rotating evaporator produces noise, first check if the equipment is placed smoothly. You can check whether the drive belt is damaged or loose, and whether it needs to be adjusted or replaced. Additionally, it is possible to check whether the motor and transmission system require lubrication or cleaning.

9. Blocked outlet pipe: If the outlet pipe is blocked, it may be due to excessive concentration of the sample or the presence of dirt in the pipeline. You can try replacing the outlet pipe or cleaning the inside of the pipeline with cleaning solution. Before operation, please make sure to turn off the vacuum pump and place the rotary evaporator in a safe position.

10. Water bath liquid level too high or too low: If the water bath liquid level cannot be maintained within the appropriate range, first check whether the inlet and outlet pipes of the water bath are normal. The inlet valve or drainage valve can be adjusted to control the water level. In addition, it is necessary to ensure good sealing of the water bath to prevent leakage.

11. Control panel display abnormality: If the control panel displays abnormality or cannot work, first check whether the power supply is connected properly. You can try restarting the device or checking if the power cord on the control panel is loose. If the problem persists, it may be necessary to contact the manufacturer for repair or replacement of the control panel.

12. Poor sealing of the evaporation bottle: If the sealing of the evaporation bottle is poor, it may cause a decrease in vacuum degree or solvent leakage. You can check if the sealing ring is intact and installed correctly. If there are any problems, they need to be replaced. In addition, sealant or lubricant can be used for sealing to ensure a tight fit between the evaporator bottle and the rotary evaporator.

13. Vacuum gauge reading error: If the vacuum gauge reading is incorrect, first check whether the connection pipeline of the vacuum gauge is loose or leaking. You can try reconnecting the pipeline or replacing the seal. In addition, it is necessary to ensure that the scale and calibration of the vacuum gauge are correct, and adjustments or calibrations can be made if necessary.

14. Heating element not working: If the heating element cannot work properly, first check if the power supply is connected properly. You can check whether the resistance or circuit of the heating element is broken, and if there is a problem, it needs to be repaired or replaced. In addition, it is necessary to ensure good contact between the heating element and the evaporator bottle to provide a uniform heating effect.

Before troubleshooting, please refer to the equipment's operating manual and operate with caution. If you are unsure about the troubleshooting method or cannot solve the problem, it is recommended to consult professional technical personnel or contact the after-sales service department of the equipment manufacturer. Overall, troubleshooting the rotary evaporator requires a certain level of technical knowledge and practical experience. If you encounter an unresolved problem, it is recommended to seek professional technical support. At the same time, in order to ensure the normal operation of the equipment, it is necessary to regularly maintain and repair it, and operate it according to the instructions in the user manual.