CAUTION!!!:
Because the high-level purge fed into the system can lead to excessive internal pressure, you must equip a glove
box with at least two Automatic RB Valves when you install a Dual Purge System.
NOTE:
If the Dual Purge System remains at high-level purge, or if it frequently fluctuates between high and low-level purge,
you need to increase your flowmeter setting. Increase the flowmeter setting until the humidity level falls a few percent below your
set point. At this flowmeter setting, the system will be able to maintain the desired humidity while on the low-level purge—and
save nitrogen.
As you increase the flow, the internal positive pressure will also increase. You may safely increase this pressure as high as .3"
WC as long as the chamber incorporates Automatic RB Valves, which automatically protect against the possibility of warping
or rupturing.
Because the humidity sensor is exposed to moisture during shipping, the system must generally operate for a couple of days in
a dry nitrogen environment before the sensor dries out and delivers completely accurate readings.
Applications with Large Materials
Generally, materials can be passed into the work area by means of the access doors, which are opened from inside the chamber.In
some applications, however, you may need to remove the rear wall in order to get large objects inside the chamber.
In this case, simply remove the screws from the rear wall.When reattaching the wall, make sure not to apply too much torque, or
the chamber wall could crack.
Applications with the Glove Box Filtration Module
The Glove Box Filtration Module System is shipped ready for installation. Simply connect the equipment to an appropriate power
source and the glove box is ready for operation.
5.0 Maintenance
Terra’s Glove Boxes require minimal maintenance. All materials are easy to clean with water or mild detergent and a dry, clean
wipe. You should take care, however, not to damage heat-sensitive static-dissipative PVC, or to clean with harsh agents that could
damage the dissipative surface.
All materials may be cleaned with clean, lukewarm water with or without a mild, non-abrasive detergent and a dry, clean non-
abrasive wipe. Use only light pressure when cleaning. If the outside surface is exceptionally dirty or gritty, lightly swab the surface
with a saturated cloth and allow the surfactants to drain away. Avoid rubbing dirt or grit into the surface. Turn the cloth often and
replace with a clean cloth frequently. Dry the surface by blotting gently with a clean, dry cloth. Take care not to damage heat-
sensitive static-dissipative PVC, or to clean with harsh agents that could damage the dissipative surface.
If you clean the inside of a glove box with water, you should dry the inside surface thoroughly and then purge the cabinet with
nitrogen for several hours before reintroducing moisture-sensitive stored materials.
CAUTION!!!:
•
Do not clean plexiglass or static-dissipative products with alcohol or other strong cleaning
agents.
•
Do not expose static-dissipative PVC to extreme heat or direct sunlight.
•
A Terra stainless steel shield is required on the bottom of each static-dissipative PVC glove
box to prevent scratching.
Special Care of Static-Dissipative PVC Plating
Although static-dissipative PVC has greater tensile strength than plexiglass, it is not as rigid, and so it tends to bow if not
supported adequately. For this reason, you should not stack static-dissipative PVC enclosures or place heavy objects on top
of them.
These enclosures should also be kept away from temperature extremes; avoid prolonged exposure to temperatures over 80 degrees
Fahrenheit. Always avoid scratching the surfaces.
Replacing Filters
Filters need to be replaced when they become clogged. A significant reduction in airflow velocity or a noisy motor may indicate a
filter change is required. The velocity of the outflow may be measured using an air velocity meter. If the air speed falls below
acceptable limits required for your application, a filter change is required.
Quick-Start Operating Guide
Series 100 Polymer Glove Box
© Copyright 2004 Terra Universal Inc. All rights reserved.
• Revised December 2004 • Document No. 1800-42
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Terra Universal, Inc. • TerraUniversal.com • 700 N. Harbor Blvd. • Anaheim, CA 92805-2553 • TEL: (714) 526-0100 • FAX: (714) 992-2179
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