In addition to correct design, the use effect of pp fume hood is also closely related to reasonable use and maintenance. How can we properly maintain and use it for a long time. 1. During the experiment, the experimental device that produces harmful substances should be placed at the place where the operating opening of Hangzhou pp fume hood is greater than 150mm to prevent harmful substances from spilling.

2. The experimental device of pp fume hood shall not cover the exhaust slit.

3. After the test, the fan shall not be shut down immediately, and shall not be shut down until 3-5 minutes later.

4. Hangzhou pp fume hood should not be used as a storage cabinet.

5. The internal surface of pp fume hood shall be kept smooth, clean and airtight. It shall be cleaned and cleaned thoroughly on a regular basis. If it is damaged, it shall be repaired in time.

6. Hangzhou pp fume hood, air duct and relevant accessories shall be regularly overhauled.

7. The pp fume hood must be measured and adjusted at regular intervals; Make pp fume hood operate under design conditions.

8. The temperature inside the pp fume hood, such as the electric furnace with large wattage, should be padded with a pad, and should not be stored and opened for a long time, so as not to affect the use of the fume hood.