Chapter 4: High Performance Features and Safety Precautions
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Safety Precautions
Although the enclosure has been engineered to maintain optimum operator
safety, caution should always be used while working. Prior to using the
enclosure, check to make sure that the exhaust blower is operating and that
air is entering the enclosure at its specified face velocity. The use of an
airflow monitor is recommended to alert the user if there is a problem with
airflow.
Use good housekeeping in the hood at all times. Clean up spills immediately.
Periodically clean enclosure interior.
Do not overload the work surface with apparatus or work material. The safe
operation of the enclosure is based upon having proper airflow through the
structure. Do not place large, bulky objects such as block heaters, directly on
the work surface. Instead, elevate the object 3/4" on blocks to allow a flow of
air under the object and into the rear baffle exhaust slots. Ensure blocks are
level and secured in place.
Blocking large portions of the rear baffle will change the airflow pattern in
the enclosure causing turbulence. (Do not store containers or supplies against
the rear baffle, as this will affect airflow).
Always work with your hands as far back in the enclosure as possible. It is
best to keep all powders, chemicals and apparatus inside the lower air foil of
the enclosure.
Do not work with chemicals in this enclosure without the exhaust system
running.
Perchloric acid use in this enclosure is prohibited.
High-level radioisotope materials are prohibited in this enclosure.
Avoid cross drafts and limit traffic in front of the enclosure. Air disturbances
created may draw contaminants out of the enclosure
.
A qualified certification technician should test the XPert Balance Enclosure
or Protector XVS Ventilation Station before it is initially used. The enclosure
should be validated whenever it is relocated, serviced or at least annually
thereafter.
The use of safety goggles, protective clothing, gloves and any other personal
protective equipment recommended by your safety officer should be used.
The sash should remain in the down position while using the enclosure.
Proper operation of the enclosure depends largely upon its location and the
operator’s work habits. Consult the references in Appendix D.
