Chapter 4: Performance Features and Safety Precautions
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3.
Upper Dilution Air Supply
provides bypass air from above the work
area. This feature constantly bathes the sash interior with clean air and
reduces powders and chemical fumes along the sash plane, near the
critical breathing zone. Five to seven percent of the required air
volume is introduced through the upper dilution air supply to ensure
maximum containment. Additionally, the upper dilution air supply
reduces stagnant pockets of air in the upper interior. See Figure 4-4.
4.
Zoned Rear Perforated Baffle
directs horizontal laminar air streams
to the three-zoned sections of the perforated baffle in a single pass.
The three-zoned sections have increasingly more airflow at the
bottom that helps form the laminar airflow. This smooth horizontal
flow minimizes the potential for air to roll forward preventing
contamination from moving toward the sash opening. The
concentrations of materials are largely removed on the first pass
through the contaminated chamber. The zoned rear perforated baffle
may be removed or tilted down for cleaning. See Figure 4-5.
Figure 4-4
Summary of Contents for XPert Series
Page 49: ...Chapter 7 Accessorizing your XPert or XVS Enclosure Product Service 1 800 522 7658 45...
Page 54: ...Appendix A Replacement Parts Product Service 1 800 522 7658 50...
Page 56: ...Appendix B Dimensions Product Service 1 800 522 7658 52 2 3 and 4 Units...
Page 57: ...Appendix B Dimensions Product Service 1 800 522 7658 53 2 3 and 4 Units...
Page 58: ...Appendix B Dimensions Product Service 1 800 522 7658 54...
