Labconco Purifier Filtered PCR Enclosures 3970425 - Manual (Page 10)

Chapter 2: Prerequisites
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6
Location and Air Current Requirements
The Purifier Filtered PCR Enclosures have been designed to provide particulate
free air meeting ISO 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 Filtered PCR
Enclosure 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.
Do not position the unit so that it is difficult to operate the main
disconnect device.
Ne placez pas l'appareil de sorte qu'il est difficile de faire
fonctionner le dispositif principal de déconnexion.
Airflow Specifications
The Purifier Filtered PCR Enclosures 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 and back of the
enclosure. The Filtered PCR Enclosure provides a continuous downflow of
particulate free HEPA filtered air.
Data for the outflow exhaust volume, downflow velocities and out-flow face
velocities are listed for each Filtered PCR model below.
Enclosure
Width Model Description
Downflow
Velocity
(fpm)
Out-
Flow
Exhaust
Volume
(CFM)
Noise
Pressure
db(A)
Average
Outflow
Face
Velocity
(fpm)
2' 2' Filtered PCR Enclosure 30
40
50
60 120
165
210
250 53-57
58-60
60-61
62-63 85
115
145
170
3' 3' Filtered PCR Enclosure 30
40
50
60 180
250
310
370 58-60
60-62
62-66
66-70 85
115
145
170
4' 4' Filtered PCR Enclosure 30
40
50
60 240
330
420
500 58-62
60-64
62-66
66-70 85
115
145
170
!