element housing. As you reach the bottom of the housing slowly guide the PVCstem or stinger on the end of the membrane element into the head of the end cap.As the membrane element slides into the housing the brine seal will be on the top(Figure 2.4, Direction of Membrane Element Installation).Figure 2.3Membrane ElementInstallation3. Next, load the up flow membrane elements, by lubricating all brine seals, O-rings,and the membrane element stingers. With the up flow membrane element and thebrine seal will be on the bottom of the membrane element. Turn the membraneelement slowly as you lower it down into the housing. As with the down flowmembrane element, one must slowly guide the PVC stinger on the end of themembrane element into the end cap.4. Reinstall the end caps by using non-petroleum based lubricant to lubricate the O-ring inside the end cap. Reinstall the end cap on the membrane element by first,aligning the stinger into the hole in the end cap and then turn the end cap slowlyclockwise, as you push it down into the membrane element housing.5. Reattach the housing clamp and tighten.6. Reattach the feed line and flush permeate and concentrate lines to the drain for25 - 30 minutes.7. Take appropriate tests to insure biocide has been flushed from the machine.8. Reconnect permeate line to point-of-use.9. The machine is now ready for operation.13