Labconco PuriCare 3820000, User Manual, Page: 14 / 52

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HAPTER
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HEORY
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PERATION
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AFETY
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RECAUTIONS
The Open Access Station operates using the following principles:

Filtration and retention of particulates by High Efficiency Particulate Air
(HEPA) filters Directional airflow
The major components in the Open Access Station are:

The HEPA filters

The impellers and motor/blower to force air through the unit

A speed controls for the impellers and motor
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Station air intakes (grilles)
HEPA Filters
HEPA filters are disposable, dry-type particulate filters. The filter material or
media is typically made of borosilicate microfibers that are made into a thin sheet,
in a process similar to the production of paper. This sheet is folded, or pleated to
increase its surface area. The pleats are held in place by aluminum diffusers or by
beads of glue that add rigidity to the media pack. The media pack is then set into a
suitable frame, and the perimeter sealed to the filter frame, as shown in Figure 4-1.