Common Faults and Solutions of Nichwell Glove Box (1)


1. Water oxygen content is more than 200ppm
Cause: new box debugging or misoperation.
Method: stop circulation, start cleaning, clean to below 100ppm, start circulation.
2. The screen shows that the main valve pressure is less than 0.4MPa or the main valve signal is faulty
Cause: insufficient air supply pressure.
Method: change the gas cylinder and increase the pressure to 0.4-0.5mpar.
3. The screen displays "pump switch off"
Cause: the resistance of vacuum pump is too large, causing tripping.
Method: after maintenance of vacuum pump, open the electric cabinet and close the trip switch.

4. Cycle cannot be opened
Cause: unstable voltage causes converter protection, resulting in failure to open the cycle.
Method: restart the glove box after the voltage is stable.
5. The gas consumption during regeneration is far less than before
Cause: the content of organic solvent in the glove box is too high. During the circulation, the organic solvent enters the circulation system. During the regeneration, the organic solvent blocks the one-way valve on the regeneration gas pipeline.
Methods: ① change the one-way valve to the through valve, and then set the regeneration pressure to 0.03 ~ 0.04MPa; ② observe whether the display of regeneration gas flowmeter is about 20ml / min, otherwise adjust the pressure of pressure reducing valve.

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