Chapter 3: Getting Started
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Certifying the Protector Filtered Fume
Hood
The filtered hood 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 E: References). Labconco
recommends an average face velocity at the sash opening of 60 to 100 feet per
minute. Consult Chapter 2 for proper airflow volumes for your particular model.
Your Protector Fume Hood has been tested at the factory per ASHRAE 110-1995.
All hoods achieve an “as manufactured rating” of less than 0.05 part per million
(ppm) at 4 liters per minute (lpm); AM<0.05 (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. A “field
use” ASHRAE method is used with isopropyl alcohol and a full report and
method is available upon request and posted on Labconco’s website.
NOTE: Face velocity profiles and smoke testing should be
done periodically to ensure safe performance.
NOTE : Les profils de flux frontal et les tests de fumée
devraient être régulièrement faits pour garantir une utilisation
en toute securité.
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