Labconco TXE Tall XPerEnclosure 3892022 - Manual (Page 19)

Chapter 4: Performance Features and Safety Precautions
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1. Zoned Rear Perforated Baffle directs horizontal laminar air streams to
the three-zoned sections of the perforated baffle. The three-zoned sections
have increasingly more open area at the bottom that help form laminar
airflow. This minimizes the potential for air to roll forward preventing
contaminants from moving toward the front opening. The majority of
contaminants are captured and removed on the first pass through the
enclosure. Rear perforated baffles may be tilted or removed for ease in
cleaning.
2. Utility Ports allows electrical cords and data cords to pass through the
back of enclosure without leaving a large hole for contaminants to escape.
3. Accessory Guardian Airflow Monitor or Guardian™ 1000 Digital
Airflow Monitor continuously monitors airflow. An audio/visual alarm
alerts the user to low airflow conditions. The Guardian 1000 Digital
Airflow Monitor also displays a face velocity value, provides an RS232
output, a night setback mode and several auxiliary relay ports. Both
airflow monitors are available options on all TXE models.
4. Adjustable Doors provide full access to the enclosure’s interior. The
support collars under each door allow some minor adjustments vertically to
facilitate applications with equipment.
5. Vibration-Isolated Motorized Impeller has vibration isolation supports,
which eliminate transfer of vibration to the work surface.
6. Speed Control regulates the speed of the motorized impeller and is used
by the certifier to validate and adjust the inflow velocity. Located behind
the front panel.
7. Fluorescent Lamp is located above the work area, out of contact with
contaminated air.
8. Filter System Pressure Gauge indicates the total system pressure across
the HEPA filter and pressurized plenum to help predict HEPA filter
loading.
9. Filter Clamping Bolt evenly seals the HEPA filter to the frame of the
enclosure.
10. Access Doors. The doors are constructed of tempered safety glass. Doors
pivot out for loading and cleaning.
11. Control Panel. The control panel, which is located above the sash,
contains the filter system pressure gauge and control switches.
12. HEPA (High Efficiency Particulate Air) Filter is rated to remove
99.99% of all particles 0.3 micron in size. See Figure 4-2. HEPA filters
listed in Chapter 3 and 7.
13. Lamp Ballast (Not Shown) for the fluorescent lamp is located behind the
control panel.