About This Manual; Theory Of Operation; Type A2 - Labconco Logic+ A2 Technical Manual

About This Manual

This manual contains technical information for all types and models of Labconco
biosafety cabinets and procedure stations. Type A2 biosafety cabinets with a 12 inch
sash operating height, and C1 biosafety cabinets utilize two internal blowers, and Type
A2 and B2 biosafety cabinets with sash operating heights of 8, 9, or 10 inch utilize one
internal blower. Where information is applicable only to Type A2 12 inch or Type C1
models, a color-coded bar is provided to alert model-specific information. Below are
examples of this color-coded bar.
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EXHAUST
RECIRCULATE (A MODE)
CURRENT / AVG = 1103 / 1104
EXHAUST (B MODE)
NEW FILTER / MAX = 994 / 1450
REV. D

Theory of Operation

This section offers a brief overview of the operation of Type A2, B2, and C1 biosafety
cabinets.
Figure 1-1

Type A2

All Logic+ Type A2 biosafety
cabinets meet the airflow
requirements of ANSI/NSF Standard
49. Approximately 55-60% of the air
in the cabinet is filtered and
recirculated, while 40-45% is filtered
and exhausted. All Type A2 Logic+
biosafety cabinets feature
intrinsically safe designs, jacketing
contaminated positive pressure
areas with negative pressure zones.
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