Exhaust Connection - Labconco Cell Logic+ B2 User Manual

Exhaust Connection

The Cell Logic+ Type B2 biosafety cabinets are "total exhaust biosafety cabinets",
meaning all of their HEPA filtered exhaust air must be exhausted out of the laboratory.
WARNING: Type B2 Total Exhaust Biosafety Cabinets are designed to be
connected to an appropriate exhaust system. Without verified inflow velocity, the
cabinet may NOT contain hazardous particulate or gasses. Do not attempt to
operate the biosafety cabinet when it is not connected to an appropriate exhaust
system that has been inspected by a qualified certifier.
WARNING: Type B2 Biosafety Cabinets rely on external blowers (usually on the
roof of a building) to exhaust 100% of the air entering the cabinet. If the building
exhaust blower fails or is mistakenly turned OFF, the cabinet will become
pressurized, resulting in airflow from the work area into the laboratory. It is
imperative that the following be considered in a risk assessment:
• Justify the type of work is appropriate for a Type B2 biosafety cabinet.
• Exhaust system must be reliable, maintained, frequently inspected and
preferably redundant.
• Exhaust termination must be distant from other building air intake systems
to prevent the reintrainment of volatile chemicals into the facility.
NOTE: The facility's remote blower cannot run at its nominal flow rate with the sash
completely closed. If the sash must be closed completely to utilize the internal UV Light
(optional), then the facility's remote blower must be shut off or its flow rate reduced by
90% or more for proper operation of the biosafety cabinet. The Cell Logic+ biosafety
cabinet has an optional EN/Dry Contact Board that contains dry relay contacts which
can be configured to signal the facility's remote blower to turn on and turn off (or reduce
speed) as the biosafety cabinet's operational needs require. For further information,
contact Labconco's Product Service Department or refer to the Cell Logic+ Technical
Manual. A remote electrical switch to control the facility's remote blower can also be
installed near the biosafety cabinet for manual control of the remote blower.
WARNING: THE EXHAUST CONNECTION IS A SEALED EXHAUST SYSTEM FROM
THE TOP OF THE CABINET TO THE REMOTE BLOWER. THE EXHAUST SYSTEM
CONTROL SHOULD BE DEDICATED TO A SINGLE BIOSAFETY CABINET. THE
CABINET IS EQUIPPED WITH AN EXHAUST AIRFLOW ALARM, SUCH THAT AN
ALARM SOUNDS, AND THE CABINET BLOWER SHUTS OFF IN THE EVENT OF
INSUFFICIENT EXHAUST AIRFLOW.
If your research involves the use of toxic compounds or volatile materials, contact your
facility's safety officer or Labconco to ensure that your Cell Logic+ and its exhaust
system are compatible with the materials you will be working with.
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