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OPERATION PRINCIPLES
The following are the working principles of the CytoFAST Top cabinet :
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the pressurized air pushed into the plenum of the main motor-fan passes through the absolute filter and
then downwards, in laminar flow, into the working chamber. From here, through the slots of the work
surface, having mixed with the external air which enters the cabinet from the front opening, the air
passes through the absolute filter placed under the work surface and is sucked into the intake up
channel situated at the rear of the working area.
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part of the air (about 30% of the total) is extracted by the second motor-fan through the corresponding
absolute exhaust filter,
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this extracted air generates the intake of air from the outside (front barrier) which ensures the protection
of the operator/environment from hazardous material manipulated in the working area.
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the extracted air may be filtered again through a second absolute exhaust filter placed on the exhaust
duct of the cabinet (BS 5726), if the air is recycled inside the laboratory where the cabinet is installed.
00055EN Rev.10 – 12/2011
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