Labconco Protector XLE Fume Hoods 9970801 - Manual (Page 19)

Chapter 3: Getting Started
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Sealing the Protector XLE Fume Hood to
the Work Surface
When the hood has been set in place, ducted, wired, and plumbed, it should be
sealed at the work surface to prevent spilled materials from collecting under the
walls of the hood. Materials such as silicone sealants are recommended to seal
the hood structure.
Certifying the Protector XLE Fume Hood
The combination of your laboratory hood, exhaust ductwork, and exhaust blower
gives you the flexibility to change the airflow at the sash opening of your hood.
To determine the actual face velocity at the sash opening, airflow velocity
readings will need to be taken. This should be done across the sash opening of
the hood in accordance with the Industrial Ventilation Manual section on
laboratory hoods. (See Appendix D – Reference) Labconco recommends an
average face velocity at the sash opening of 80 to 100 feet per minute. Consult
Labconco Customer Service for proper airflow volumes for your particular model.
Your Protector XLE Fume Hood has been tested at the factory per ASHRAE 110-
1995. All hoods achieve an “as manufactured rating” of less than 0.10 part per
million (ppm) at 4 liters per minute (lpm); AM<0.10 (consult Labconco for
individual fume hood ratings). For “field use” ASHRAE testing contact
Labconco Sales Engineering Team or Customer Service for a certified on-site
contractor.
NOTE: Face velocity profiles and smoke testing should be
done periodically to ensure safe performance.
Your Next Step
After your Fume Hood has been installed and certified, you are ready to proceed
to Chapter 4: Performance Features and Safety Precautions.
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