Exhaust System Requirements; Type A2 Models - Labconco Logic+ A2 Technical Manual

Exhaust System Requirements

The exhaust system must be capable of moving the following volumes of exhaust air at
the negative pressures listed. The Airflow Volumes are the values recorded via direct
measurement using a flow hood at the front opening of the cabinet. The Concurrent
Balance Values are measured in the exhaust duct via traverse methodology, and will
always be higher due to differences in volume measurement methodologies.
For Type A2 models with Ventus Canopy Connections, see Table 7-1.
For Cell Logic+ Type A2 models with Ventus Canopy Connections, see Table 7-2
For Type B2 models, see Table 7-3.
For Type C1 models operating in B-mode, see Table 7-4.

Type A2 Models

Logic+ Type A2 Model
3-foot, 8" Sash
3-foot, 10" Sash
4-foot, 8" Sash
4-foot, 10" Sash
4-foot, 12" Sash
5-foot, 8" Sash
5-foot, 10" Sash
5-foot, 12" Sash
6-foot, 8" Sash
6-foot, 10" Sash
6-foot, 12" Sash
1: Unlike Type B biosafety cabinets, the recommended vacuum will remain constant
throughout the life of the exhaust HEPA filter. Duct vacuums below 0.05 inches H
(12 Pa) or above 0.5 inches H
alarm condition from the product.
2: WC = Inches of Water Column, typically expressed in units of inches H
Airflow Volume
3
3
ft /min m /hr ft
263 447
316 537
333 566
404 687
474 805
403 685
491 834
580 985
473 804
579 984
686 1166
O (125 Pa) may result in erratic operation and throw an
2
31
Concurrent Recommended
Balance Value Duct Vacuum
3
3
/min m /hr
289 491
348 591
366 622
444 754
521 885
443 753
540 917
638 1084
520 883
637 1082
755 1283
Table 7-1
1
2
WC Pa
0.15 38
0.15 38
0.15 38
0.15 38
0.15 38
0.15 38
0.15 38
0.15 38
0.15 38
0.15 38
0.15 38
O
2
O.
2