Labconco Class I Enclosure Models 3980423 - Manual (Page 30)

Chapter 4: High Performance Features and Safety Precautions
Product Service 1-800-522-7658 26
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23. Increase the face velocity by adjusting the speed control of the motorized
impeller or change the HEPA filter when the face velocity falls below
acceptable limits established by your Safety Officer.
24. Exhaust carbon filters and HEPA filters are disposed as hazardous waste.
The user is responsible for recording the chemicals adsorbed or treated by
the filters and disposing properly. HEPA filters should be decontaminated
before disposal on Purifier enclosures.
25. Ensure only trained operators use the enclosure. New users should review
the User’s Manual and become familiar with the operation of the enclosure.
26. If the filtered enclosure is to be used in a confined space, make sure the
space is well ventilated and the concentration of toxic contaminants cannot
accumulate greater than the TWA.
27. Proper operation of the enclosure depends largely upon the enclosure
location and the operator’s work habits. The enclosure should be located
away from traffic patterns, doors, fans, ventilation registers, fume hoods,
and any other air-handling device that could disrupt its airflow patterns.
Consult Chapter 2: Prerequisites and Chapter 3: Getting Started sections
of this manual for further details.
28. Only nuisance powders, biohazardous and particulates removed by HEPA
filters and trace chemicals which can be safely adsorbed and treated with
specific carbon based filters are appropriate for use in this enclosure.
29. The warning properties (i.e., odor, taste) of the volatile organic compounds
or other material being used in the enclosure must be adequate to provide
an early indication that the carbon filter may be saturated or inadequate.
Contact Labconco for help with chemical assessment.
30. Use the smallest possible quantity of chemical(s) within the enclosure and
never exceed the amount, which can be effectively adsorbed by the Odor
Control carbon filter before breakthrough.
31. Adjust face velocity to fall between 75 and 105 FPM for biological
procedures.
32. Leave the blower on for at least one minute after work in the enclosure has
been completed.
33. If a chemical, powder or particulates are spilled on the work surface, DO
NOT switch off the blower until all traces have been removed.
34. Tag enclosures with appropriate warning, if filters have been removed for
service.
35. If the blower fails during use, processes should cease and the area should
be vacated and ventilated.
36. Always refer to the NIOSH Pocket Guide to Chemical Hazards before
proceeding. For additional help with filter and chemical selection contact
Labconco at 1-800-821-5525 or 1-816-333-8811.