Labconco Protector 3944300 User Manual page 18

Chapter 3: Getting Started
Connecting the Electrical Supply
A standard duplex receptacle should be nearby for connecting the
FilterMate Portable Exhauster, airflow monitor and accessories. Please
review Chapter 2 for electrical prerequisites.
All wiring for the building duplex outlets SHOULD be performed by a
licensed electrician and conform to all local codes.
Sealing to the Work Surface
When the hood has been set in place, ducted and wired, it may be sealed
at the work surface to prevent spilled materials from collecting under the
walls. A bead of silicone sealant is recommended to seal the hood to the
work surface.
Validating the Hood
The exhaust damper, exhaust blower or FilterMate gives you the flexibility
to change the airflow at the sash opening of your enclosure. Determine
the actual face velocity at the sash opening by taking airflow velocity
readings. These should be taken across the sash opening of the
enclosure in accordance with the Industrial Ventilation Manual. (See
Appendix D) The "average face velocity" is achieved by taking readings in
two rows across the enclosure with the readings 6" from the ends and
evenly spaced every 12"; the first row is 3" down from the upper sash foil
and the second row is 3" up from the work surface. Labconco
recommends an average face velocity at the sash opening of 60 to 100
feet per minute for Protector Demonstration Hoods. Refer to Chapter 2 for
proper airflow volumes for your particular model.
Your Protector Demonstration Hood has been tested at the factory per
ASHRAE 110-1995. All enclosures 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 ratings). For "field use" ASHRAE
testing contact Labconco for a certified on-site contractor.
NOTE: Face velocity profiles and smoke testing should be
performed frequently per your organization's quality system to
ensure safe performance.
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