Laboratory Glove Box Common Problems and Solutions

A laboratory glove box is a device used to conduct experiments in a highly controlled environment that provides an inert gas environment to protect experimental materials from moisture, oxygen, or other contaminants. The following are some common problems with gloveboxes and their solutions: 1. Oxygen content rises slowly while cycling- Cause: Trace leakage between the box to the fan inlet, possible leakage from bellows or fittings, leakage from purging column or solvent column. – Solution: Check and eliminate leakage points using the sectional pressure maintaining method; replace damaged bellows or sealing joints; check and replace leaking purge column. – Cycle can not start – Check: whether the working gas pressure is maintained between 0.4-0.6MPa; high vacuum baffle valve feedback switch status; whether the pressure sensor display is normal; whether the blower air switch is tripped; blower frequency converter working status. – Solution: Adjust the air pressure to the standard range; repair or replace the faulty parts. – REGENERATION BUTTON DOES NOT WORK – CAUSE: Password may be required; Vacuum pump is not turned on; Purge column is in the process of cycling. – SOLUTION: Confirm and enter the correct password; make sure the vacuum pump is turned on; wait for the current cycle to complete. – The touch screen does not respond – Cause: The user has not logged in or has not logged in again after the unit has been powered off. – Solution: Re-login in the user management interface. – Vacuum pump stops running – Reason: Startup current is too high causing the air switch to trip. – Solution: Check if the vacuum pump power button is on and reset the QF2 circuit breaker. – Fan trips – Check: power supply problem, overload or mechanical failure. – Solution: Restart the vacuum pump after confirming stable power supply, check whether there is any foreign matter obstructing the rotation, and contact professional maintenance if necessary. – Reduced air consumption during regeneration – Cause: High organic solvent content in the glove box, blocking the check valve on the regeneration air line. – Solution: Temporarily replace the check valve with a straight-through valve, and in the long run, clean or replace the clogged parts. – Chamber tightness problems – Check: glove ports, hatch seals are intact. – SOLUTION: Ensure all ports are sealed properly and replace damaged seals. – Temperature effects on water content – CAUTION: Excessive temperatures may result in a slow decrease in water content. – ADJUSTMENT: Adjust the temperature in the chamber appropriately to maintain suitable conditions. – Incomplete baking of activated carbon – SOLUTION: Ensure that the activated carbon is fully baked to avoid affecting water content control. – Improper handling – Reminder: Ensure that the correct use is followed, that overloading of the sample is avoided and that the sample is pre-dried. For the above problems, if you are unable to solve them yourself, it is recommended that you contact your equipment supplier or a professional maintenance person for diagnosis and repair to ensure the smooth running and safety of your experiments.