Labconco Protector 3390000 User Manual page 19

Directional Airflow
Directional airflow plays a critical role in EDC performance. Air is drawn
into the inlet prefilter, located on the bottom of the door(s). The filtered air
then flows upwards through the liner, passing over the evidence to be
dried. Before leaving the liner, the air then passes through the exhaust
prefilter, which is designed to protect the HEPA filter from large particulates
and may be removed to examine it for the collection of evidence. The air is
pressurized by the blower, and then forced through the HEPA and carbon
filters, to remove biohazardous particulates and odorous chemicals,
respectively. This is illustrated in Figure 5-1.
Figure 5-1
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