3-4. R.O. ELEMENT REPLACEMENT - cont.
On Models WPES-20, H-9518-2, WPES-30, and H-9518-3 the top and second from
bottom R.O. pressure tubes have reverse flow direction. Open end of brine seal must face
opposite the direction of flow. Refer to figure 3-2.
Lubricate brine seal (1, figure 3-5) with silicone grease from storage chest. Insert the first R.O. element (2) into
the R.O. pressure tube (3) until brine seal (1) touches end of R.O. pressure tube.
To prevent premature failure of equipment, do not confuse interconnector with end
connectors. End connectors have a lip on the inside that seals against R.O. elements.
Place interconnector (4) on product water tube (5) of first R.O. element (2).
Remove second R.O. element from sealed plastic bag. Lubricate brine seal (10) with silicone grease from
Insert product water tube (6, figure 3-3) of the second R.O. element (7) into interconnector (4). Make sure that
the open end of the brine seal (10) is opposite the direction of water flow.
Slide both R.O. elements (2 and 7) and interconnector (4) into R.O. pressure tube (3) until they are centered in
Place end connector (8) on R.O. element (7).
Place other end connector (9) on R.O. element (2).
Install R. O. Tube End Caps. Refer to figure 3-1.
Lubricate preformed packing on end cap (13) with silicone grease from storage chest.
Align end cap (13) with alignment marks on R.O. pressure tube (14) made during removal.
Push end cap ( 13) onto R.O. pressure tube ( 14) while connecting tube on inside of end cap with end connector
(8, figure 3-3 or figure 3-4).
Press end cap (13) onto R.O. pressure tube (14) until seated on studs( 11). Make sure alignment marks match
Loosely install ten flat washers (10) and nuts (9) on studs (11).
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