Labconco XPert Nano Enclosures 38876 Series - Manual (Page 67)

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Appendix D:
Quick Chart
Model Size 2' 3' 4' 5' 6'
Sash Height from Work Surface (inches) 9.44 9.44 9.44 12.00 12.00
Total Open Area with Bypass (sq. ft.) 1.45 2.20 2.95 4.80 5.80
Exhaust Airflow Volume at 90fpm (CFM) 130 200 265 430 520
Alarm Airflow Volume at 60 fpm (CFM) 85 130 175 290 350
Initial Mag. Gauge Pressure Reading (inches H
2
O) 0.20 to .045 0.15 to 0.40 0.10 to 0.35 0.10 to 0.50 0.10 to 0.50
Number of Laskin Nozzles needed at 10 psig 1 1 1 1 1
Exhaust ULPA Filter w/ Gasket Dimensions (inches) 18x18x3.31 30x18x3.31 42x18x3.31 (2) 24x18x3.31 (2) 18x30x3.31
*Motor Horsepower (HP) 0.13 0.13 0.30 0.60 0.60
*Capacitor (MFD, Volts) 10MFD, 115V
(2) 4MFD, 230V
10MFD, 115V
(2) 4MFD, 230V
15MFD, 115V
4MFD, 230V
15MFD, 115V
4MFD, 230V
15MFD, 115V
4MFD, 230V
Fluorescent Lights F15T8-SP35 F17T8 F25T8 F32T8 F40T8
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. 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.