February 2022
Installation, Operation and Maintenance Manual
VCIOM-15345-EN Rev. 1
14
Installation
Section 2: Installation
NOTICE
For temperatures, which do not appear on the graph, the formula to calculate the
pre-charge pressure shown on the General Arrangement Picture Assembly should be used.
NOTICE
Recheck the pre-charge pressure after a time interval sufficient to insure the nitrogen
pressure is equal to the ambient temperature (a minimum of 4 hours). Adjust the
pre-charge pressure as required to conform to the Pressure versus Temperature graph.
g.
After the nitrogen filling is complete, close the Isolation Valve (25)
(Nitrogen Blow Down and Fill).
h.
Disconnect the nitrogen supply and remove the female pipe adaptor from
Isolation Valve (25) (Nitrogen Blow Down and Fill).
i.
Install the straight thread plug and O-ring, shipped as an accessory, into
Isolation Valve (25) (Nitrogen Blow Down and Fill).
NOTICE
The straight thread plug must be installed, after filling is complete, to prevent accidental
leakage of nitrogen from Isolation Valve (25) (Nitrogen Blow Down and Fill).
j.
Close Isolation Valve (24).
