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 with the adapter
fitted if required, as described in paragraphs 4 to 6 on page 6.
11. Reconnect piping to vessel as described in Remaking Pipe Connection to End Plug
on page 11.
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.
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