The effectiveness of the laboratory fume hood is not only properly designed, but also has a lot to do with proper use and maintenance. Therefore, the following points should be noted:
(1) In the course of the experiment, the experimental device for generating harmful substances shall be placed at a place where the operating port of the cabinet of the fume hood is greater than 150 MM to prevent the spillage of harmful substances;
(2) The experimental device of the fume hood should not obscure the exhaust slit;
(3) After the experiment is completed, the fan should not be turned off immediately, and it takes 3 to 5 minutes to turn off;
(4) The fume hood should not be used as a storage cabinet;
(5) The inside of the fume hood should always keep the inner surface of the cabinet clean and sealed. It should be thoroughly cleaned and cleaned regularly. If it is damaged, it must be repaired in time;
(6) Fans, ducts and related accessories shall be regularly inspected;
(7) At intervals, the fume hood shall be measured and adjusted once; the fume hood shall be operated under design conditions;
(8) The temperature inside the fume hood , such as the electric slab with large wattage, should be padded and not suitable for long time storage, so as not to affect the use of the wind cabinet.
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