Filter System; Fig. 4 Filter System With Downflow And Exhaust Air Filter - Thermo Scientific MSC-Advantage Operating Instructions Manual

4 Description of the device
• Position monitoring
The position sensors detect the opening state of the front
window and indicate whether the window is open or closed
in the work position.
• SmartFlow Indicatordisplay
The SmartFlow Indicator displays the compensation capa-
billity of the exhaust control, if the window is in working po-
sition and blower on.
4.3

Filter system

Fig. 4: The filter system consists of two HEPA filters [5] and [2]
for the device downflow and exhaust air.
HEPA filters: Room air [10] is drawn into the sample cham-
ber through the working opening. In the air duct, room air and
the downflow within the chamber [7] are then blended to make
up the blend air [8]. The blend air is then:
• filtered proportionally by the downflow filter [5] and supp-
lied as ultrapure air [6] evenly into the sample chamber of
the device,
• filtered by the exhaust air filter [2] and released as ultrapure
air [1] to the exterior of the device.
Inlet air protection: Multi-segment protective grids [9] are in-
stalled below the work surface in the air duct between sample
chamber and device plenum. The grids prevent coarse particles
from entering the plenum where they might impair the function
of the blowers [3] [4] and of the filters [2] [5]. The grids can be
removed for cleaning.
Operating Instructions Biological Safety Cabinet | MSC-Advantage
Fig. 4
Filter system with downflow
and exhaust air filter
19