What are the tips for using a ductless clean fume hood in the laboratory?

The ductless clean fume hood is a large piece of equipment
for laboratories, especially chemical laboratories.
The use is to reduce exposure
to experimenters and harmful gases.
Complete isolation requires the use of a glove box
.
Pipeless fume hood is a kind of local exhaust equipment commonly used in the laboratory, there are many types, due to its different structure, different conditions of use, and its exhaust effect is not the same
.
The performance of the fume hood is a good ring, which mainly depends on the speed of
air movement through the fume hood.
The use rate of the non-pipeline clean fume hood in the laboratory construction is very high, how to choose the appropriate, reasonable fume hood installation position, you need to choose the type of fume hood, material, shape, etc.
according to the experimental content, ventilation must be considered
.
When experimenting with organic matter or other special reagents, it is necessary to fully consider its control of wind speed
.
Heat source: When using equipment with heat source, when its heat exceeds 2000 kcal/h, the amount of ventilation required to discharge heat should be considered to determine the power
of the fan.
When there are experiments such as radioactive materials or perchloric acid: the inlet air speed of the tubeless fume hood to be selected must be set to greater than 0.
5m/s
.
When experimenting with large equipment: consider the effective dimensions of the interior to leave the necessary space
for exhaust.
Fume hoods without pipes do not require external pipes, do not pollute the external environment, and have little
impact on laboratory temperature.
However, the disadvantage is that the filter material must be replaced regularly, the experimenter may be exposed to harmful gases more than the use of exhaust fume hood, and because the multi-installed exhaust fan is close to the experimenter, it will cause noise
.
Tips for using a ductless clean fume hood: 1.
The installation adjustment level of the ductless fume hood must be in place, otherwise it will affect the window adjustment balance effect
.
2, the electrical part of the fume hood must be installed correctly by electrical professionals, the wiring of the fan must pay attention to the steering of the wind blade, and the wind direction cannot be hung
upside down.
3.
During the experimental operation, the motor switch must be started first, and then work
when the operation is normal.
4.
The upper and lower adjustment of the pipeless fume hood window directly affects the size of the
air volume.
When it is necessary to adjust the entire window up and down, please move the sliding door glass to the normal closed position, otherwise it will affect the effect of
the exhaust cabinet.
5.
For daily use and maintenance of ductless fume hood, please follow the panel instructions
.
6.
When the fume hood cannot work normally, professional personnel need to maintain it
.
Please contact us in time!