7. As soon as liquid starts to issue from the vent
valve (2), stop filling by closing the line (or supply
tank) valve.
For details of this operation, refer to the instruction
manual for the supply tanks.
Maximum level is reached.
Make sure not to overfill the tank during manual
filling so as to avoid rupturing the vacuum in the
inner wall (liquid nitrogen coming in contact with
the pump check valve - 1).
8. Close the filling/withdrawal valve (1). Withdraw the
flexible line from the TP and the line (or supply
tank) valve (4). Close the vent valve (2) as soon as
air no longer exits from it.
8.5 Withdrawal
Withdrawal consists in transferring the liquid nitrogen
that is in the storage tank to a container, for example
a tank in the
TR
product line. This is done with a
flexible withdrawal line attached to the withdrawal
valve. No additional equipment is needed.
Proceed as follows:
Refer to the safety notes in section 8.4, on page
22.
The tank must never be left unattended
during the withdrawal stage.
1. Check that the vent valve (2) is closed. Check that
the filling/withdrawal valve (1) is closed. Open the
pressure-building valve (3).
2. Fit the withdrawal hose (
130/130
or
130/TC
– see
page 16) onto the withdrawal tap (4).
3. Place a container at the other end of the flexible
withdrawal line.
1
To Next Page
Loading...