SterilGARD III Advance SG403 / SG603 - Baker Company

AIRFLOW DIAGRAM
The flow of air inside the
SterilGARD III is “zoned”.
This means that the air flows
faster at the front of the work
area than at the back. The
diffuser directs the air to create a
high speed air curtain just
behind the viewscreen glass.
This air curtain is an extremely
effective barrier to room air.
Contamination most easily
enters and exits the work area
around the perimeter. There are
rows of slots, called “high
velocity return air slots”, along
the front, vertical edge of the
inside walls of the cabinet and
behind the top of the view
screen. Each of these slots acts
like a tiny vacuum cleaner,
sucking dirty room air away
from the clean work area.
Following the airflow path,
illustrated by the arrows in Fig.
3, a portion of the air in the
positive pressure plenum is
pushed out of the cabinet
through the exhaust filter. The
remaining air is pushed through
the supply filter into the work
area. Room air enters the
cabinet through a grille in front
of the work surface called the
“front perforated”, and through
the high velocity return air slots.
This room air is combined with
the used air from the work area
in the space under the work
surface, the “drain pan”. This
combined, contaminated air is
pulled up the rear of the cabinet
into the motor-blower, which
pushes the air into the positive
pressure plenum. This
completes the airflow cycle.
Fig. 3: Airflow
7