n. Disconnect the Nitrogen Supply Hose from
the Filling Manifold. The Cylinder Valve
should reseat itself. To verify the valve has
closed, slowly open the Nitrogen Valve on
the Filling Manifold; residual pressure will
begin to decrease.
If you begin to see liquid flowing out of the
Filling Manifold, close the Nitrogen Valve.
This indicates the valve did not reseat
properly. If this occurs:
i. Connect an adapter to the discharge
port on the solenoid.
ii. With the Filling Manifold still
connected to the Fill Adapter on the
cylinder, energize the solenoid with
the correct voltage to open the
solenoid.
iii. Apply 450 psi of Nitrogen for 10
seconds.
iv. Turn off the power to the solenoid.
v. Repeat step “m”.
vi. Close the valve on the nitrogen
source.
o. After it has been verified that the valve is
properly seated, remove the Filling Manifold
and Refill Adapter, then immediately install
the Anti Recoil Plug.
p. Monitor the pressure for 24 hours. Nitrogen
will be absorbed into the liquid HFC227ea,
reducing cylinder pressure. This absorption
can be accelerated by agitating the
cylinder, and may require multiple additions
of Nitrogen to assure that the HFC227ea
has reached its full saturation point.
q. If pressure is less than 360 psi, reinstall the
Refill Adapter and Filling Manifold.
r. Repeat steps “m”, “n” and “o” to adjust the
pressure to 360 psi.
NOTE: Do not return the cylinder into
service until the pressure has
remained at 360 psi, (at 70°F), for
a minimum of 6 hours.
s. Perform a leak check.
The installation is now complete.
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