Chapter 2: Prerequisites; Support, Vibration & Movement Requirements; Location And Air Current Requirements; Airflow Specifications - Labconco Purifier 3970200 User Manual

Chapter 2: Prerequisites

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Support, Vibration and Movement
Requirements
At a minimum, the supporting structure usually consists of a base
cabinet or base stand and chemically-resistant work surface.
Location and Air Current
Requirements
Purifier Vertical Clean Benches have been designed to provide
particulate-free clean air meeting Class 5 conditions by negating
typical cross drafts and turbulence within the opening. However,
as a precautionary safety measure and a higher level of quality
management, it is recommended that the clean bench be placed in
an area away from:
•
High traffic areas where walking might cause an air
disturbance or be a nuisance.
•
Overhead or wall HVAC diffusers, fans, radiators or other lab
equipment producing air currents.
•
Doorways or windows that may be opened.

Airflow Specifications

Purifier Vertical Clean Benches use an integral motorized impeller
to draw room air from the top and through the enclosure. This
room air is then pushed down through the HEPA filter. The
enclosure is factory set to deliver 40-55 fpm downflow velocity
measured 6" below the upper diffuser. The Class 5 HEPA-filtered
air flows across the work area and exits out the front of the
enclosure.
Data for the outflow exhaust volume, downflow velocities and out-
flow face velocities are listed for each Vertical Clean Bench model
below.
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