Labconco 3940200 User Manual - page 32

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Chapter 4: High Performance Features and Safety

1.  Aerodynamic Clean-Sweep™ Air Foil has a unique shape 

that allows air to sweep the work surface for maximum 

containment.  The Clean-Sweep™ openings create a 

constant protective barrier from contaminants.  Should the 

operator inadvertently block the airflow entering the air 

foil, air continues to pass under the air foil and through the 

Clean-Sweep openings.  See Figures 4-1 and 4-3. 

2.  Containment-Enhancing Upper Sash Foil includes an 

open air passage directly atop the sash foil to bleed air into 

the hood chamber and direct chemical, powder and 

particulate materials away from the sash opening.  The 

radiused sash foil sweeps airflow into the hood with 

minimal turbulence.  See Figures 4-1 and 4-4. 

Figure 4-3 

Figure 4-4