7
Closing the vessel
6. Check that the spiral retaining ring is fully
seated in the groove. If it is not, remove and
check for foreign material that is causing the
spiral ring not to sit into the groove.
Retaining ring seated in the groove
7. Lubricate element seals sparingly with the
element manufacturers recommended
lubricant or with glycerin.
8. Insert each element with the brine seal
(typically a U-cup seat) installed on the
upstream end with its lip facing upstream.
9. Install the interconnectors between multiple
elements as each succeeding element is
installed.
10. Push each element downstream into the
shell as it is installed until the element is
fully engaged with the downstream head. If
the elements are hard to push, make sure
the brine seal is properly installed and you
are pushing from the upstream end. When
all the elements are fully inserted into the
vessel, install the upstream head.
11. Reconnect piping to vessel as described in
Remaking Pipe Connection to Eng Plug.
12. Pressurize the vessel. Inspect for leaks at
connections to the vessel and all around the
vessel itself. If any leaks occur, release
pressure from the vessel and tighten the
fittings as necessary. Then pressurize
vessel and check for leaks again.
WARNING: Any remaining lubricant should
be cleaned from the vessel bore before
applying fresh lubricant. Glycerin is a
commercially available lubricant that will not
foul the membranes.
CAUTION: DO NOT tolerate any leaks. Leaks
can result in corrosion and eventual
catastrophic vessel failure.
CAUTION: System malfunctions and element
damage may result if elements are installed
in the wrong direction.
NOTE: On some systems it may be easier to
install the piping connections before the
head is installed. If so, please proceed with
steps 10 &11.
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