MVE LN2 Tx, Operator'S Manual, Page: 6 / 9

6 — Ln2 Tx Instructions
Setup
N2 Gas Connection
The LN2 TX requires a nitrogen gas supply to operate. The con-
nection for the nitrogen gas supply hose is shown in Figure 3.
The hose connection is a ½” ODT x 45° SAE flare fitting. This
is the standard connection for a nitrogen transfer hose. It is the
same connection used to connect a transfer hose to an MVE
Liquid nitrogen freezer.
Figure 3, Nitrogen Gas connection
Connect the nitrogen gas supply hose to the LN2 TX as shown in
Figure 4.
Figure 4, Nitrogen Gas supply hose connected to the LN2 TX
Connect the opposite end of the supply hose to the gas use valve
of a portable liquid nitrogen cylinder as shown in Figure 5. The
nitrogen gas supply pressure should be between 22 and 50psi.
Although a liquid cylinder with gas use capability is the preferred
supply method, a high pressure nitrogen gas supply cylinder can
be used to supply gas to the LN2 TX. A suitable pressure regula-
tor and hose adapter fittings will be required. DO NOT USE
COMPRESSED AIR to supply the LN2 TX. The moisture in the
compressed air will freeze inside the suction head of the LN2 TX,
blocking the orifices and causing it to stop working.
Figure 5, Nitrogen Gas Supply hose connected to Gas Use valve
on liquid cylinder
Basic Operating Instructions
The suction end of the LN2 TX is shown in Figure 6
Figure 6, Suction end of LN2 TX
Place the suction end of the LN2 TX in to the container that you
want to remove liquid from as shown in Figure 7, making sure
that the open end does not sit flat on the bottom of the container.
If the end sits flat on the inside bottom of the container, the inlet
will be sealed off and no transfer will take place.
Figure 7, Suction end of LN2 TX placed inside supply container