Labconco Protector Filtered Glove Box - Manual (Page 9)

Chapter 2: Prerequisites
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Support, Vibration and Preventive Requirements
In the preparation of a glove box site, please consider the following:
• A bench or stand that is rigidly mounted to the floor or fixed to the wall,
but not both, may be appropriate. 35" to 40" (889mm-1016mm) is
typical for standing height. (Labconco stands offered in Chapter 7 vary
from 33" to 40".)
• The corners of a building typically have less vibration than the center,
which promotes analytical balance stability.
• The bench typically should not contain any vibration-producing
equipment, such as shakers or pumps.
• A marble slab with dampening pads placed within the enclosure is an
effective low cost means of controlling vibration (see Chapter 7:
Accessorizing Your Filtered Glove Box).
Location Requirements
The Protector Filtered Glove Boxes have been designed to rest on a typical
29"-30" (737mm-762mm) deep work surface. The height should be 35"-40"
for standing position. Avoid placing the glove box in high traffic areas where
walking might disrupt the operator or experimentation.
Exhaust and Blower Requirements
The Protector Filtered Glove Box, as manufactured, uses an integral
motorized impeller to pull room air through the inlet filter and exhaust the air
through the outlet filter to discharge the clean air back into the laboratory.
This negative pressure operation mode pulls all internally-contaminated air
through the exhaust filter. The filtered exhaust air is then forced out the top
of the glove box. An optional FilterMate™ Portable Exhauster with a carbon
filter may be installed downstream of the exhaust to adsorb low levels of
organic fumes, formaldehyde, or ammonia gases.
The filtered exhaust air from the glove box can be exhausted to the outside
with the installation of a thimble exhaust connection kit and remote blower
listed in Chapter 7.
Labconco does not recommend a hard duct connection using the built-in
motorized impeller as the source of airflow out of the facility. This can
create a positive pressure in the exhaust duct and is harder to maintain.