Installation and Operating Guide
Cleanroom Pass-Through Chambers
©
Copyright 2020 Terra Universal Inc. All rights reserved. • Revised Jul. 2020 • Document No. 1800-07
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: (714) 578-6000 • FAX: (714) 578-6020
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Operation and Maintenance
4.0
4.1
Operation
The operator should always verify that the opposite door is fully shut prior to opening a door. Do not
yank, shake, or apply excessive force to the doors. Attempting to force open a door while the
mechanical interlock is engaged may result in damage to the unit.
CAUTION
The FirmLok™ mechanical interlock system will prevent both doors from being opened at the same time. This system cannot
be disabled, so it is important that operators fully close and latch the pass-through door after use.
4.2
Maintenance
•
Do not clean acrylic with alcohol or other strong cleaning agents.
•
Do not expose static-dissipative PVC to extreme heat or direct sunlight.
CAUTION
The FirmLok™ mechanical interlock system is maintenance-free and rated for over 100,000 operations. If the interlock system
malfunctions, please contact Terra Universal.
4.3
Cleaning
Acrylic and Static-Dissipative PVC Windows
Acrylic and static-dissipative PVC should be periodically cleaned with clean, lukewarm water and a clean nonabrasive cloth. If
desired, a mild, non-abrasive detergent may also be used. Use only light pressure when cleaning. If the outside of the acrylic is
exceptionally dirty or gritty, rinse the surface first by lightly swabbing a saturated cloth over the surface and allowing 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
acrylic by blotting gently with a clean, dry cloth.
Stainless Steel
Clean stainless steel surfaces with alcohol (or similar cleaning agent) and a damp cloth.
Terra recommends use of knitted polyester wipers or spun-lace, non-woven blends of cellulose and polyester manufactured
and packaged specifically for cleanroom use. These products are manufactured under tightly controlled conditions that restrict
the use of binders or chemical treatments that can outgas, and cleanroom packaging and strict lot control ensure optimal
cleanliness.
Less critical environments (ISO 6 – 8 / Class 1000 – 100,000) generally tolerate more absorbent materials made of 100%
cotton twill or cellulose.
Clean surfaces with clean, lukewarm water with or without a mild, non-abrasive detergent. In critical cleanroom applications, DI
water or isopropyl alcohol may be required.
For thorough, repeatable results, avoid cleaning with a circular motion, which rubs dirt or grit into the surface. Using mild
pressure, wipe in one direction, from top to bottom or side to side, in slightly overlapping stokes. Fold the wiper between
strokes, and replace with a clean wiper often.
