Glove box is an indispensable equipment in scientific research and industrial fields, providing an oxygen free and water free working environment for sensitive materials. However, during use, the glove box may experience various malfunctions. Mikrouna will provide a detailed glove box maintenance and troubleshooting guide to help users quickly locate problems and take appropriate measures.
1. Glove box transition cabin air supply or extraction failure
Fault phenomenon:
The large transition cabin is unable to replenish or extract air normally.
Cause analysis:
The pores may be blocked.
The solenoid valve and pneumatic
angle valve are not open or the working air pressure is too low.
The transition hatch is not tightly closed.
The sealing ring of the transition cabin has aged or become loose.
Solution:
Determine the position of the air vent based on the direction of the pipeline and clear it.
Check the solenoid valve, pneumatic angle valve, and working air pressure to ensure they are working properly.
Check if the transition hatch is tightly closed and if the sealing ring is aged or loose.
2. Abnormal increase in glove box pressure during cleaning
Fault phenomenon:
During the cleaning process, the pressure inside the glove box continues to increase.
Reason analysis:
It may be due to the cleaning valve not being opened or excessive intake pressure.
Solution:
Ensure that the pipeline is unobstructed, avoid bending, and maintain relative pressure inside the glove box (e.g. 0-9 mbar)
3. The circulating fan cannot be started
Fault phenomenon:
The glove box circulation system cannot start.
Cause analysis:
The outlet pressure of the steel cylinder pressure reducing valve is too low to open the angle valve.
The angle valve sensing switch is not sensing and lacks feedback signal.
Valve malfunction prevents air pressure from entering the angle valve.
Solution:
Check if the gas cylinder has been opened and ensure that the working pressure is within the normal range.
Confirm if the angle valve sensing switch is sensing correctly.
Check the error code displayed on the frequency converter and find a solution based on the error code.
4. The water oxygen content continues to rise
Fault phenomenon:
The water oxygen content continues to rise and cannot be reduced below the usage requirements.
Cause analysis:
Oxygen cell damage or transmitter malfunction.
Adsorption materials fail due to prolonged use and organic solvent contamination.
Solution:
Check the appearance of the oxygen battery and replace it if it is damaged.
If the water oxygen index remains unchanged, check the water oxygen transmitter.
Consider replacing the adsorbent material to restore adsorption efficiency.
5. Abnormal pressure fluctuations
Fault phenomenon:
The pressure inside the glove box continues to rise or fall.
Cause analysis:
The air supply or extraction solenoid valve is stuck by foreign objects and cannot be closed normally.
Solution:
Check and clean or replace the solenoid valve to ensure its normal operation.
6. Purification column main valve malfunction
Fault phenomenon:
The main valve of the purification column is working abnormally.
Cause analysis:
Insufficient working pressure.
Main valve signal feedback fault.
Solution:
Replace the working gas cylinder or check the pressure of the pressure reducing valve.
Check if the main valve signal switch is functioning properly.
7. The circulatory system cannot be turned on
Fault phenomenon:
The circulatory system failed to start.
Cause analysis:
Low or high voltage protection of fan frequency converter.
Solution:
Wait for the voltage to stabilize, shut down for 1 minute, and then restart.
The correct use and maintenance of glove boxes are crucial for ensuring the accuracy and efficiency of experiments. Understanding common problems and their solutions can help users quickly locate and solve problems, thereby avoiding experimental interruptions or data loss. Regular inspection and maintenance are also key to ensuring the normal operation of the glove box. If the problem exceeds your own ability to solve, please contact the professional after-sales team in a timely manner, and Mikrouna will protect your experiment.
