Labconco Protecto Downdraft Powder Station 3410025 - Manual (Page 13)

Chapter 4: Performance Features and Safety Precautions
Product Service 1-800-522-7658 9
The HEPA filter manufacturer establishes the efficiency of the filter by
challenging it with an aerosol of known particle size. The number of particles
that penetrate the filter are quantified, and this establishes the efficiency of
the filter. The filter used in the Downdraft Powder Station is at least 99.99%
efficient in removing particles 0.3 micron.
Note: The HEPA filter media is very fragile. DO NOT touch the media.
If you think the media of a HEPA filter is damaged, Call Labconco’s
Product Service Department at 1-800-522-7658 or 816-333-8811.
Note: HEPA Filters are only effective against particulate material. Gases
will pass through the filter.
Blower
The blower assembly pulls room air through the work surface, prefilter and
HEPA filter, and then discharges the filtered air out of the top of the unit. The
Downdraft Powder Station uses a motorized, backward curved fan for quiet,
energy efficient operation.
Station Air Intake and Exhaust
In order to operate properly, the perforated work surface must be
unobstructed. Blocking or restricting the exhaust outlet on the top of the filter
module can also adversely affect the performance of the system.
Figure 4-2
Polyurethane seal
Between media pack
and filter frame
Filter frame
Filter media pack –
A continuous sheet
of filter media