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Vacuum operation with nitrogen purging (N
Vacuum operation
08- 2016
Installation
Vacuum operation
The table below gives the steps of the vacuum operation with nitrogen purging
(N
) :
2
Step
1
Carry out a simple vacuum
operation.
2
Remove the valve cap (5) of the
filling tool (4).
3
S Open the nitrogen (N
tap (9).
S Open and close the cock (11)
of the pressure reducer to
eliminate any air inside the tube
(12) (approx. 3 s at low
flow- rate).
S Close the nitrogen (N
tap (9).
4
Connect the tube (12) to the filling
tool (4).
5
Open the nitrogen (N
(9) and adjust gas output by act-
ing on the cock (11) of the pres-
sure reducer (reduced flow rate).
S Close the tap (9) from time to
time to check pressure on the
gauge (13).
S Start filling again until the
required
0.03 MPa is reached.
S Close in this order : the tap (9),
then the cock (11).
GE Information
), continued
2
Action
) bottle
2
) bottle
2
N
) bottle tap
2
pressure
about
N
Comment/Diagram
1 mbar (100 Pa)
during 1 hour.
4
5
12
9
Open
2
11
Closed
4
9
Open
13
2
11
Closed
Continued on next page.
L31- 881EN04
12
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