Labconco 3970202 User Manual - Requirements

6 

Chapter 2:  Prerequisites 

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 

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. 

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 45-65 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.