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14
14
September 2020
Service Instructions
MAN-02-08-77-0714-EN Rev. 2
Section 2: Installation
Installation
c.
Ensure 3-way Isolation Valve is turned fully counterclockwise.
d.
Slowly open Isolation Valve (Accumulator drain) and drain all the fluid
back to the reservoir.
e.
Connect a nitrogen supply to the Customer Nitrogen Fill Connection
at Isolation Valve (Nitrogen Blow Down and Fill).
f.
Open the Isolation Valve (Nitrogen Blow Down and Fill) and
charge the Accumulator, to the pre-charge pressure as specified
by the Pressure versus Temperature Graph on the General
Arrangement Drawing.
NOTE:
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.
NOTE:
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 (Nitrogen
Blow Down and Fill).
h.
Disconnect the nitrogen supply and remove the female pipe adaptor from
Isolation Valve (Nitrogen Blow Down and Fill).
i.
Install the straight thread plug and O-ring, shipped as an accessory, into
Isolation Valve (Nitrogen Blow Down and Fill).
NOTE:
The straight thread plug must be installed, after filling is complete, to prevent accidental
leakage of nitrogen from Isolation Valve (Nitrogen Blow Down and Fill).
j.
Close Isolation Valve.