Amaircare 7500 Airwash Cart - Manual (Page 3)

FILTER MEDIA
There are three stages of filtration in the AMAIRCARE ® Air Filtration System. Air is
drawn into the unit through the pre-filter door and is exhausted through the duct
opening above the fan compartment. The three stages of filtration are as follows:
STAGE 1: In the first stage the air passes through a foam pre-filter. This stage of fil-
tration removes larger particles such as dust and dander.
STAGE 2: After passing through the pre-filter, the air then moves through a high
efficiency particulate removal filter. The “HEPA” (High Efficiency Particulate
Arrestance) filter media is laser tested to remove 99.97% of the particles in the air
stream down to a size of 0.3 microns. Particles of concern which are normally in
this size range include pollen, household dust, cigarette smoke, bacteria, molds,
etc.
STAGE 3: The clean air stream then passes through a 1/2” inner blanket of activat-
ed carbon impregnated non-woven polyester filter material. This final stage of fil-
tering adsorbs additional gaseous contaminant’s such as odors and toxic fumes.
SERVICE LIFE
The useful service life of the filter media in the AMAIRCARE ® Air Filtration System is
directly related to the volume of air passed through the system and the amount of
contaminant’s in the air. In a typical residential application, the Stage 1 pre-filter
should be replaced or washed every 6 months (or as needed depending on the
visible amount of contaminates) The Stage 2 HEPA filter should retain peak perfor-
mance for a period of two to five years, again, depending on the amount of par-
ticulate in the air and the maintenance of the Stage 1 pre-filter. The Stage 3 filter
media should be replaced every three to six months.
HEPA AIR FILTRATION SYSTEMS
Congratulations! You will quickly realize that you have purchased the
most effective air cleaning and treatment system available anywhere. It incorpo-
rates “state of the art” HEPA (High Efficiency Particulate Arrestance) technology.
This is the equipment that respiratory specialists recommend.
Your AMAIRCARE ® Air Filtration System comes with a limited warranty.
With proper attention to its care and maintenance, you will receive a lifetime opti-
mum performance.
If your indoor air has abnormally high concentrations of particulate, odors or tox-
ins, the life span of the filter media may be shortened. Excessive particulate in the
air will reduce the expected life of the HEPA filter as it will ultimately restrict the flow
of air through the unit. Under normal conditions the HEPA filter will last from two to
five years, and its ability to remove very small particulate actually improves with
use. The activated carbon media has a finite limit as to the amount of odor or
other gaseous toxins that it can absorb. Again, the higher the concentrations, the
shorter the expected life. Normally, the first stage pre-filter should be washed or
replaced every 6 months.
As indicated above, the HEPA filter’s particulate removal efficiency
improves with use. However, the air flow through the HEPA filter media will ultimate-
ly begin to decrease, thus lowering its ability to circulate and clean as much air as
when it was new. If the air flow through your unit is noticeably reduced, you can
inspect the HEPA filter by removing it and seeing if the filter paper is darkened on
the inlet or outer side. If it is, the filter cartridge should be replaced.
Please contact your local Amaircare ® dealer or call Americair
Corporation Customer Service Department at (905) 565-9488 regarding replace-
ment of filter media, warranty information or if you have any questions or concerns
about the performance of your AMAIRCARE
® Air Filtration System.