Labconco Protector Controlled Atmosphere Glove Box - Manual (Page 17)

Chapter 3: Getting Started
Product Service 1-800-522-7658 13
Adding the Oil and Connecting the Pressure
Relief Bubbler to Outside Exhaust
The glove box ships with a separate oil container with a specific gravity of
0.87. The pressure relief bubbler prevents over or under pressurization of the
glove box main chamber and activates at pressures and vacuums above +5"
water gauge (1245 Pa) or below -5" water gauge (-1245 Pa) to prevent glass
breakage and glove box liner damage. See Figure 3-1 as the bubbler must be
filled with oil to a level of 6" (152 mm) measured vertically from the bottom
of the stainless steel bubbler. Add the oil through the open exhaust port using
a 3/4" I.D. hose (#5443500) and funnel.
As stated in Chapter 2, the main chamber pressure relief bubbler can be
exhausted back into the room or exhausted to the outside, if required. Figure
3-1 shows the location of the pressure relief bubbler exhaust. After
consulting with your Safety Officer and reading the prerequisites in Chapter
2, connect the exhaust the bubbler to the outside if your application requires
it. If needed, the 3/4" I.D. neoprene circulation hose kit can be used and
ordered from Chapter 7 to exhaust the bubbler to the outside. Furthermore,
should your application require HEPA filtered exhaust to the room, purchase
and install the 5441403 HEPA Filter Exhaust Kit from Chapter 7.
WARNING: The weight of the pressure relief exhaust
ductwork system must be supported independently of the
glove box superstructure or damage may occur.
The exhaust system should be installed by a qualified
HVAC contractor.
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