Connecting the electrical supply, Sealing the vented enclosure to the work surface, Validating the vented enclosure – Labconco XVS Ventilation Stations 4865060 User Manual

Page 21

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Chapter 3: Getting Started

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17

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 the Vented Enclosure to the Work
Surface

When the enclosure 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 enclosure to the
work surface.

Validating the Vented Enclosure

The exhaust damper ductwork, exhaust blower or FilterMate gives you the
flexibility to change the airflow at the sash opening of your enclosure. 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 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
high performance XPert and Protector XVS enclosures. Refer to Chapter 2
for proper airflow volumes for your particular model.

Your XPert or XVS enclosure 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. For additional validation,
Labconco had independent testing performed to validate the enclosures for
sodium naproxen powder containment. Labconco also had independent
ASHRAE testing performed to validate the enclosures for gas containment.
For copies of these independent validation reports, contact Labconco
Customer Service.
NOTE: Face velocity profiles and smoke testing should be performed
frequently per your organizations quality system to ensure safe
performance.

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