NuAire LabGard NU-560-400, Operation & Maintenance Manual

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OM0295
Rev 2 September 2020 Page 5 of 103
LabGard® ES Energy Saver Class II,
Type B2 Laminar Flow
Biosafety Cabinet
Models
NU-560-400/600
MANUFACTURED BY:
NuAire, Inc. - Plymouth, Minnesota, U.S.A.
1.0 General Information
1.1 Description
The LABGARD® ES Model NU-560 Laminar Flow Biosafety Cabinet (LFBSC) is a bench/table top model, optionally available
with a base support stand, for operation as a console model. The LABGARD® ES model NU-560 utilizes an Energy Saver DC
ECM motor optimally determined forward curved fan for each model size/width to maximize both energy efficiency and
filter loading capacity. The Energy Saver ECM motor is controlled to airflow setpoints via a solid-state DC motor controller
with digital dual thermistor airflow sensors that provide an automatic compensation (constant volume control) for both
filter loading and line voltage variances.
The Laminar Flow Biosafety Cabinet, (LFBSC) is a product resulting from the development of the "laminar flow" principle
and the application of environmental controls as required in the field of biological research or chemical containment. The
LFBSC, when used with proper technique, is an effective laboratory aid in obtaining the optimum control over product
quality while reducing the potential for exposure of both product and personnel to airborne biological or particulate
chemical agents in low to moderate risk-hazard research and drug preparation or product operations, as prescribed by the
Center for Disease Control (CDC) Atlanta, Georgia.
The NU-560 Bench LFBSC meets the requirements of a Class II, Type B2 since the cabinet conforms to the following
requirements:
- Maintain a minimum average inflow velocity of 100 fpm (0.51m/s) through the work access opening;
-
Have HEPA filtered downflow air drawn from the laboratory or the outside air (i.e. downflow air is not re-circulated
from the cabinet exhaust air;
-
Exhaust all inflow and downflow air to the atmosphere through a hard connection to the facility exhaust system after
filtration through a HEPA filter without recirculation in the cabinet or return to the laboratory;
- Have all contaminated ducts and plenums under negative pressure or surrounded by directly exhausted
(non-re-circulated through the work area) negative pressure ducts and plenums.
Type B2 cabinets may be used for work with nonflammable or explosive volatile chemicals and radionuclides required
if permitted by chemical risk assessment.