The part numbers for the optional thimble exhaust connection are
1911316 for four foot units, and 1911317 for six foot units.
The test conditions according to NSF/ANSI 49 were performed with the
standard version of the safety cabinet, without exhaust system accessories.
An available accessory for the biological safety cabinet exhaust system is an
exhaust thimble connection for an on-site exhaust system with blower.
According to NSF/ANSI Standard 49, an exhaust alarm is required with
this connection.
The exhaust system components are installed to the exhaust opening on
top of the cabinet. The threaded inserts for the retaining screws are
pre-installed in the unit.
Installation on 4 model:
1. Turn the unit off and disconnect it from the power source.
2. Thoroughly clean the surfaces
around the exhaust opening and
of the accessory to be installed, to
ensure that they are free of debris.
3. Secure the accessory by tightening
the supplied retaining screws
(M5) wrench-tight.
4. Using the adjustment nuts on the
sliding panel, set the gap height
to an opening of 2 inches.
2-2 1500 Series A2
Thermo Scientific
Section 2
Installation
Optional Exhaust
Transition
Exhaust System
Accessories
Thimble
Retaining
screws
Exhaust
opening
Threaded
inserts
Figure 2-1.
4 ft Thimble
