If it is determined that the damper must be adjusted in
order for the proper airflow balance to be maintained, adjust it
as follows:
1. The damper control
(Figure 9-3) is located on
the top of the cabinet.
2. Loosen the wingnut,
move the lever to the
desired position and
retighten the wingnut.
Copies of the factory airflow test sheets are available in the
Specifications section.
9.4 Biological Safety Cabinet Test Grids
a. 4-foot Series, Models 1284 and 1285
b. 6-foot Series, Models 1286 and 1287
A list of certification companies is included on the
Thermo Electron website, or call the Technical Services
Department. See Page iii.
Class II, A2 Biological Safety Cabinets_______________________________________________________Routine Maintenance
9 - 2
Figure 9-2
Figure 9-3
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