Labconco Logic+ A2, Technical Manual

Page: 135 / 201

135
Air-Tight Damper Adjustment
An air-tight damper is integral to the exhaust housing on a Type B2 biosafety cabinet. It
may also be used on a Type A2 or C1 that is connected to a remote (building) exhaust
system. The air-tight damper is used to adjust the remote exhaust system airflow drawn
from a particular biosafety cabinet to fine-
tune the exhaust flow to meet the model’s
requirements. A remote exhaust connected Type A2 will require the Ventus Canopy
Connection Kit installed for the air-tight damper to be installed above it. To adjust airflow
on a Labconco air-tight damper follow these instructions.
1. Locate the damper adjustment blade (see Figure 12-47) on the air-tight damper.
2. Using a #2 Phillips screwdriver, loosen the locking screw on the damper
adjustment blade. Adjust the damper blade to allow more or less exhaust air to
the biosafety cabinet as needed. Retighten the locking screw.
.
Figure 12-47
Damper
Adjustment
Blade
Type B2
shown. Type
A2 or C1 may
vary in
appearance
Locking
Screw