2. Unscrew the nut joint on the right side of the membrane shell by hand or tool, and pull out the water pipe.
3. Close the pressure barrel ball valve, unscrew the nut joint above it by hand or tool, and guide the water pipe into the empty barrel or washing tank.
4. Tighten the reverse osmosis membrane tube by hand, then clamp the old reverse osmosis membrane with pliers (or special tools) and pull it out of the membrane shell.
5. Open the envelope of the new reverse osmosis membrane and take it out.
6. Insert the newly opened reverse osmosis membrane into the reverse osmosis membrane tube until one end of two small black "O" rings is pushed to the bottom of the membrane shell.
7. Tighten the film cover in the opposite direction of opening the film cover.
8. Install the water pipe and tighten the connecting nut. Don't forget to put away the plug, except for the quick connector.
9. Open the electroplating ball valve. Let the machine run for more than two hours, then connect the water pipe with the barrel pressure ball valve and open the barrel pressure ball valve.