How to maintain a fume hood?

The maintenance of fume hoods is an important measure to ensure their long-term stable operation and extend their service life. The following are some key maintenance steps and suggestions:

First, regular cleaning

Surface cleaning: Regularly wipe the inner and outer surfaces of the fume hood with a soft cloth and neutral detergent, including the glass, metal and plastic parts. Avoid using acidic, alkaline or strongly corrosive cleaners.

Internal cleaning: Regularly clean the work surface and wall panels inside the fume hood to ensure there are no residues or stains. If there is a filter inside, it should be cleaned or replaced in accordance with the manufacturer's recommendations.

Special material cleaning: For fume hood components made of different materials, such as stainless steel, solid core physical and chemical boards, epoxy countertops, etc., corresponding cleaning agents and cleaning methods should be used. For instance, stainless steel surfaces should avoid using chlorine-containing or acidic cleaning agents, and solid core chemical-resistant board countertops should be protected from being scratched by sharp objects.

Second, inspection and adjustment

Electrical system inspection: Regularly inspect the electrical system of the fume hood, including circuits, switches, sockets, etc., to ensure there is no looseness or damage. If any abnormal situation is found, professional personnel should be contacted in time for repair.

Filtration system inspection: Regularly inspect the filtration system of the fume hood, including the filter, fan, etc., to ensure its normal operation. If the filter is found to be clogged or the fan operates abnormally, it should be cleaned or replaced in time.

Performance adjustment: At regular intervals, the fume hood should be measured and adjusted to ensure it operates under the designed conditions. This includes adjusting the wind speed, replacing the filter, etc.

Third, use it reasonably

Avoid overloading: Do not use the fume hood continuously for a long time or overload it to prevent damage to the equipment.

Pay attention to the experimental operation: During the experiment, avoid directly placing the experimental equipment that generates harmful substances in the fume hood. Instead, place it in a position larger than 150MM from the operation opening of the fume hood to prevent the leakage of harmful substances.

Turn off the fan in time: After the experiment is completed, the fan should not be turned off immediately. Wait for a few minutes to allow all the exhaust gas in the cabinet to be completely discharged before turning it off.

Fourth, personal protection and safety

Personal protection: When using a fume hood, appropriate personal protective equipment such as gloves, masks, and goggles should be worn to ensure the safety of the laboratory personnel.

Safe operation: Follow the correct operation methods and safety regulations, and avoid conducting dangerous operations or storing flammable and explosive items inside the fume hood.

Fifth, recording and tracking

Maintenance records: Establish maintenance records for fume hoods, including cleaning dates, inspection items, repair conditions, etc., to track the maintenance history of the equipment.

Regular assessment: Regularly evaluate the performance and condition of the fume hood, and formulate corresponding maintenance plans based on the assessment results.

By following the above maintenance steps and suggestions, the long-term stable operation and extended service life of the fume hood can be ensured, while also enhancing the safety and work efficiency of the laboratory.