Chapter 4: Performance Features and Safety Precautions
Product Service 1-800-522-7658
29
Original instructions
Motor/Blowers
Unlike most Biosafety Cabinets, the Axiom has two motor/blowers. The
supply motor/blower is positioned above the Supply HEPA filter, and is
responsible for the recirculation of air from the front grille and sides of the
work area back down through the work area. The exhaust motor/blower is
located before the exhaust HEPA filter, and it draws the air in the center of
the work area, and pushes it through the filter, discharging HEPA-filtered air
either back into the laboratory, or into an exhaust system. As shown in Figure
4-5. Both motors in the Axiom cabinet are electronically commutated motors
(ECM). The ECM is a brushless DC motor that includes its own power
supply to convert the incoming alternating current to direct current, as well as
its own microprocessor to control and measure the motor’s operation. The
motors utilize Labconco’s exclusive Constant Airflow Profile
TM
(CAP)
programming to deliver a consistent volume of air, throughout the life of the
HEPA filters.
Figure 4-5
