Installation and Operating Guide
Smart Pass-Through Chambers
©
Copyright 2017 Terra Universal Inc. All rights reserved. • Revised July 2020 • Document No. 1788-27
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: (714) 578-6000 • FAX: (714) 578-6020
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LED Status Indicator Lights
The interlock system also features LED indicator lights to show the
status of the electronic interlock. When an indicator light turns red,
the opposite door of the pass-through has been opened and the
interlock has been engaged. When the indicator light is green, the
pass-through can be opened.
In addition to the red indicator light, the glowing TUI logo will flash
when the electronic door interlock has been engaged.
The location of these lights will vary depending on the final design
of the Smart Pass-through and any specified options.
Alarm Bells
The Smart Pass-Through chamber includes two wireless alarm bells that
notify operators when one of the pass-through doors has been opened
and the interlock has engaged, locking the door on the opposite side. The
main purpose of the alarm bells is to alert personnel if the pass-through
door on the opposite side has been opened and the interlock is engaged.
This is particularly useful if the pass-through does not include windows.
Each alarm bell is synchronized with one of the doors on the pass-
through. Once the Smart Pass-Through has been installed and
connected to a power supply, each bell should be tested to determine the
corresponding door.
If the alarm bells have not been labeled, use the following procedure to
determine alarm bell placement:
1.
Starting on the “clean” side of the pass-through (the side that is flush
with the wall), plug one of the alarm bells into a standard 120V outlet.
2.
Open the “clean” side pass-through door. If the bell begins chiming, move the alarm bell to the “dirty” side of the pass-
through.
3.
If nothing happens, unplug that alarm bell and plug in the other one. Open the “clean” side door again and verify that the
alarm bell activates. Move the alarm bell that activates to the “dirty” side.
4.
Make sure that when one side of the pass-through is opened, the alarm bell activates on the opposite side of the pass-
through.
Following set up, the appropriate alarm bell will emit a single chime and the red LED indicator light will blink whenever the door
is opened on the opposite side of the pass-through. When both doors are closed, the indicator light will stop blinking.
NOTE
If one of the doors is left ajar for an extended period of time, both alarm bells will ring continuously until
the door is shut.
Figure 3:
Smart Alarm Bells
Figure 2:
TUI logo and green LED Indicator Light
