Labconco XPert Weigh Boxes 5220331 - Manual (Page 21)

Chapter 4: Performance Features and Safety Precautions
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4. Main Chamber Static Pressure Gauge provides an indication of HEPA
filter condition inside the glove box. Typically, HEPA filters should be
replaced when the static pressure gauge reading has increased two-fold.
The gauge can be changed to positive pressure for clean air glove box
operations by reversing the hose on the gauge to the positive pressure
connection. Positive Pressure Conversion Kit is sold separately (see
Chapter 7).
5. Glove Ports are 8" nominal size and molded into the main glove box
shell. The double grooves provide two points of restraint for safe
changing of the gloves.
6. Neoprene Gloves are supplied with the glove box, .015" thick, 30" long,
one pair, size 9 ¾. See Appendix A for replacements parts and Chapter 7
for a description.
7. Removable Framed Glass Window is 1/4" thick laminated safety glass
and is reinforced with a powder-coated steel frame. The removable glass
window frame provides access to the interior for loading large apparatus.
When removed, the window opening is 26.4" wide x 12.5" high (670mm
wide x 317mm high). The framed glass window is sealed with a one-
piece molded neoprene gasket. See Chapter 7 for optional Acrylic
Viewing Window with Frame.
8. Fluorescent Lamp provides 30-40 foot candles of interior illumination
on the work surface. The lamp may be replaced from outside the glove
box. See Chapters 6 and 7 for replacement.
9. Control Panel consists of the main chamber static pressure gauge,
switches for the light, blower, duplex outlet, and speed control. The
speed control can vary the impeller speed from 13 to 100 CFM.
10. Work Surface is black chemically-resistant phenolic core and sealed to
the glove box floor. The black surface aids proper cleaning and provides
high visibility of powders. Phenolic core has superior chemical resistance
and stain resistance.
11. Interior Switched Duplex is located on the glove box ceiling. The
innermost outlet of the duplex labeled “AUX” is switch operated on the
front control panel. An additional power strip is included with 115V
models. See Chapter 7 for accessory power strips for international
electrical configurations. The interior duplex is rated at 115V, 5A or
230V, 2A or 100V, 5A.
12. Transfer Chamber Doors have a molded one-piece neoprene gasket
with a quick operating latch for user comfort. The counterweight doors
swing up to save space. IMPORTANT: Transfer chamber must have
an optional High Vacuum Sleeve if the chamber is converted for
vacuum operation. See Chapter 7.
13. Anti-Static Ionizer Fan is located on the ceiling of the glove box and
switch operated on the control panel. It circulates ionized air inside the
glove box to reduce static charge and is useful in weighing applications.
(See Appendix D for Ionizer Fan Performance Criteria.)
14. Balance Vibration Isolator includes a marble slab with isolator pads and
stainless steel cover to protect the porous marble. Provides stable
platform for sensitive weighing applications.