Labconco Paramoun Ductless Enclosures 69636 Series, 6' Widths - Manual (Page 9)

Chapter 2: Prerequisites
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Location and Air Current Requirements
The Paramount Ductless Enclosures have been designed to contain hazards
by negating typical cross drafts and turbulence within the opening. However,
it is recommended that the enclosure be placed in an area to avoid:
 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.
 Near doorways or windows that may be opened.
Exhaust and Blower Requirements
The Paramount Ductless Enclosure uses a green, 95% energy efficient,
electronically-commutated motorized (ECM) impeller to draw room air past
the operator and through the enclosure (see Appendix D for power usage by
model). This contaminated air is passed through filters and exhausted out the
top of the enclosure. The filtered exhaust air is normally recirculated into the
laboratory or may be exhausted outside with the addition of the Canopy
Exhaust Connection and remote blower listed in Chapter 7. Contact
Labconco for blower sizing assistance for exhausting to the outside.
Electrical connections are covered in Chapter 2 for this configuration.
Data for the enclosure’s exhaust volume, noise pressure and face velocity are
listed on the next page in chart form for each Paramount Ductless Enclosure
model at face velocities of 60, 80, and 100 fpm. All models are shipped to
operate at 75-80 fpm, but can be reset by the Safety Officer or certification
technician through a password protected menu.
Important Note: If the enclosure is connected directly to a house exhaust system,
an adjustable damper (or valve) must be installed to control the airflow properly.
This is equally important when a house exhaust system is controlling multiple
ductless enclosures. See Chapter 7 for information on accessories.