Chapter 6: Maintaining the Ductless Enclosure
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Change the Airflow Face Velocity (If Necessary)
The Paramount has been tested and shipped at a face velocity of 75-80 fpm.
If necessary, refer to the instructions in Chapter 3 to change the face velocity.
Refer to the “Calibration” menus in Chapter 5 that refer to the “Pressure
Sensor” and “Airflow Alarm.” The “Calibration” menus require a password
to protect the ductless enclosure integrity and the password can only be
obtained from Labconco Product Service for certifier use. The “Airflow
Alarm” should be set at 10-20 fpm below the normal operating face velocity
and it was tested and shipped at 60 fpm.
Initial Certification
The ductless enclosure has been certified at the factory for an inflow velocity
of 75-80 fpm. The ductless enclosure should be certified for the proper
inflow velocity required by your Safety Officer. Transport, altitude, or
temperature differences may require the “Calibration” of the “Pressure
Sensor” to be reset as outlined in Chapter 5: Using the Ductless Enclosure.
If a HEPA filter is used, it is a conservative recommendation to perform the
HEPA Filter Leak Test should there be any damage to the media caused
during transport.
Re-Certification
Under normal operating conditions, the enclosure should be recertified at
least annually if serviced. The certifier should perform the following tests.
• Airflow Velocity Test. If necessary, reset the Airflow Face Velocity and
Motor Speed per the “Calibration” of the “Pressure Sensor” menu listed
in Chapter 5.
• HEPA Filter Leak Test, if installed.
In addition, the following test should also be performed at the user’s
discretion:
• Smoke Test to determine proper airflow patterns.
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