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Installation (continued)
Thermo Scientific
7. Tighten the wingnut until it contacts the washer. Tighten wingnut
another 1½ to 2 turns (EXT RBR versions 4-5 turns).
Caution Tighten the wingnut finger-tight only, do not use any tools.
Tightening the wingnut expands the rubber stopper against the necktube
of the vessel. Excessive tightening may damage the necktube.
8. Clip the safety cable to the vessel handle.
9. Close the vent valve and the discharge valve. Pressurewill slowly begin
to build. Several hours will be required to achieve sufficient pressure to
operate the liquid discharge device. Pressure buildup can be accelerated
by gently tipping the vessel at 45°angle.
Caution Excessive pressure can rupture the vessel.
Figure 3-1. Components
Section 3
Operation
Cryogenic Transfer Vessels
3-3
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