The oxygen content of the glove box is greater than 200ppm. Reason: new box debugging or misoperation. Method: Stop the cycle, start the cleaning, clean to below 100ppm, and start the cycle. ；
The glove box screen shows that the main valve pressure is less than 0.4MPa or the main valve signal failure reason: the air source pressure is insufficient. Method: change the gas cylinder and increase the pressure to 0.4-0.5MPar;
“Pump Switch Off” appears on the glove box screen. Reason: The resistance of the vacuum pump is too large, causing a trip. Method: After repairing the vacuum pump, open the electric cabinet and close the trip switch;
The reason why the glove box cycle cannot be turned on: The voltage instability causes the inverter to protect and the cycle cannot be turned on. Method: Wait for the voltage to stabilize and restart the glove box to solve the problem.
The amount of gas used during the regeneration of the glove box is much smaller than the previous reason: this is mostly caused by the high content of organic solvent in the box, the organic solvent enters the circulation system during circulation, and the organic solvent blocks the one-way valve on the regeneration gas pipeline during regeneration. Method: ①Change the one-way valve to a straight-through valve, and set the regeneration pressure to 0.03~0.04Mpa; ②Observe whether the regeneration gas flowmeter shows about 20ml/min, otherwise adjust the pressure of the pressure reducing valve;
The glove box loop and the analyzer are turned off at the same time. Reasons: ①The pressure in the box is too high for an instant, exceeding +12mbar, the system will automatically protect; ②The voltage is unstable, causing system protection. Solution: Check whether the pressure setting is correct, whether the pressure sensor is abnormal, whether the box vacuum valve or the air supply valve is damaged, and the pressure returns to normal, then turn on the analyzer and cycle.
The reason why the glove box is large and the small warehouse cannot be filled with air: ①The air holes in the glove box leading to the large and small warehouses may be blocked by plastic film; ②Whether the solenoid valve is not opened. Method: According to the direction of the pipeline, determine the position of the air hole and dredge the pipeline; ②Check the wiring and solenoid valve;
Reasons for the inability to pump air in the glove box size bins: ①The air holes in the large and small bins are blocked by plastic film, etc. or the cabin door leaks; ②It is also possible that the bin door is not closed tightly, and ③The seal ring of the large and small bins is loose. Methods: ①Determine the position of the air hole according to the direction of the pipeline, and clear the pipeline; ②Close the warehouse door and check the size of the sealing ring; ③Check whether the working air pressure is too low (because the large warehouse exhaust valve is a pneumatic valve);
The tank pressure continues to increase during the glove box cleaning. Reasons: the cleaning valve is not opened, the intake pressure is too high, and the pipeline is not smooth. Method: ①Ensure that the pipeline is unobstructed, preferably not to be bent; ②When cleaning, the relative pressure in the tank is continuously lower than 0.5 mbar.
Reasons for the failure of the main valve of the glove box purification column: ①The working gas pressure is less than 0.5Mpa; ②The signal feedback failure of the main valve is solved: ①Replace the working gas cylinder, or check the pressure of the auxiliary gauge of the pressure reducing valve at 0.5Mpa; ②Check the main valve signal switch;
The reason why the glove box cycle cannot be turned on: low or high pressure protection of the fan inverter. Solution: After the voltage is stable, shut down and restart after 1 minute