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Manafacture: Gentek File size: 1.29 mb File name: Language of manual:

The filtered enclosures have been tested to effectively contain toxic and noxious materials when properly installed and operated. What makes the filtered enclosures so unique is the revolutionary way they direct air into and through the contaminated air chamber. Labconco engineered the filtered enclosures to minimize the effects of turbulence. The containment-enhancing and aerodynamic designs of the upper sash foil, side air foils, lower air foil, upper dilution air supply, and rear perforated baffle all work in concert to produce horizontal airflow patterns that significantly reduce powder, chemical and particulate concentrations through the work area. *(U.S. Patent No. 6,461,233) 23 Chapter 4: High Performance Features and Safety These concentrations of materials are predominantly removed on the “first pass” of airflow through the chamber resulting in high performance containment. The plenum and the HEPA filter are jacketed by negative pressure. Should a leak occur in the filter gasket or the plenum, the contaminated air is recaptured and refiltered. The XPert Filtered Balance System and XPert Filtered Balance Station include a true bag-in/bag-out HEPA filter disposal system to protect the worker from contact with hazardous powders and particulates. User’s of both products are encouraged to routinely check airflow with the use of the airflow monitor. Chapter 4: High Performance Features and Safety 17 26 16 1015 3 8 18 2 1 5 6 4 19 Not Shown 7, 9, 10, 11, 12, 13, 20, 21, 22, 23, 24, 25, 28 (See Figure 4-2) Figure 4-1 25 Chapter 4: High Performance Features and Safety Figure 4-2 HEPA Filtered Enclosure Airflow Diagram 26 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. Figure 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 4-4 27 Chapter 4: High Performance Features and Safety 3. Upper Dilution Air Supply provides bypass air from above the work area. This feature constantly bathes the ins...

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