Labconco Paramoun Ductless Enclosures 69636 Series, 6' Widths - Manual (Page 22)

Chapter 4: Performance Features and Safety Precautions
Product Service 1-800-522-7658 17
High Performance Containment
The Paramount Ductless Enclosures use patented technology to direct air into
and through the contaminated air chamber (U.S. Patent 6,461,233). The
containment enhancing and aerodynamic designs of the lower Clean-
Sweep™ Air Foil, upper sash foil, side air foils, upper dilution air supply,
and zoned rear perforated baffle all work in concert to produce horizontal
airflow patterns that significantly reduce chemical concentrations through the
work area (illustrated in Figure 4-2). The unique lower air foil shape and
Clean-Sweep™ openings sweep the work surface and create a constant
protective barrier from contaminants. The radiused upper sash foil includes
an open air passage directly atop the sash foil into the enclosure chamber and
directs chemical concentrations away from the sash opening. The side entry
air foils allow turbulence-free air to enter the enclosure from the sides and
allow clean air to sweep the interior walls. The upper dilution air supply
provides by-pass air from above the work surface to constantly bathe the
inside of the sash and upper chamber with clean air to reduce chemical
concentrations. The zoned rear perforated baffle directs horizontal laminar
air streams to the three zones to minimize the potential for air to roll forward
preventing contaminants from moving toward the sash opening.
Figure 4-2
Airflow Diagram