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Theory of Operation
This section offers a brief overview of the theory of operation of the Logic+.
Airflow Patterns
Figure 1-8
All Logic+ Type A2 cabinets meet the airflow
requirements of ANSI/NSF Standard 49:2012.
Approximately 55-60% of the air in the cabinet is
filtered and recirculated, while 40-45% is filtered and
exhausted. ALL Logic+s feature intrinsically safe
designs, jacketing contaminated positive pressure
areas with negative pressure zones.
Figure 1-9
All Logic+ Type B2 cabinets meet the airflow
requirements of ANSI/NSF Standard 49:2012. All of
the air in the cabinet is filtered and none is
recirculated. ALL Type B2 Logic+s feature
intrinsically safe designs, with all contaminated
areas under negative pressure.
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