Mve Variō Plumbing Connections - CHART BioMedical MVE Vario Pro Guide De Référence Rapide

MVE Biological Systems MVE Variō™ Pro Quick Start Guide
TM
2.0 MVE Variō Plumbing Connections
Connect a transfer line (included with freezer) from an LN2 supply tank to the fill connection at the rear of the
freezer. Optimum supply tank pressure is 22 to 35 psi (1.5 to 2.4 bar). Although the plumbing assembly has a
50 psi (3.45 bar) pressure relief device, it is recommended that the supply tank be pressurized below 35 psi
(2.4 bar) to reduce the LN2 "flash-off" rate during cooling cycles and to maximize the cryogenic valve life. The
supply line can be insulated to minimize LN2 transfer losses. After the transfer hose is securely coupled to the
freezer and supply tank, ensure all connections are leak free by opening the valve of the LN2 supply tank and
applying a soap and water solution to each field joint. You should not see bubbles forming at any joint. Wipe
away excess soap and water when finished. Before removing the transfer hose, ensure the LN2 supply tank
valve is closed. Slowly and carefully loosen the transfer hose connection to vent any remaining pressure in the
line before disconnecting the hose.
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PN 14910831 Rev A