6.4.7
Replace the reverse osmosis membrane
1. Close the tap water valve.
2. Close the storage tank valve.
3. Open the purified water valve to depressurize the network. The SOURCE light of the
electronic unit is now on. Let the purified water valve opened.
4. Turn off the water purifier by unplugging the power plug.
5. Remove the post-treatment filter from its two plastic stirrups (Figure 14).
6. Disconnect the outlet pipe from the membrane holder (Figure 15).
7. Remove the membrane holder from its plastic stirrups (Figure 16). You can take advantage
of this step to change the flow restrictor (part 6.4.8).
8. Unscrew (by turning to the right) the striped part on the top («big cap») of the membrane
holder.
9. Once the membrane holder opened, remove the used membrane using a wrench. Insert the
new membrane, with the peripheral seal on the top, until the membrane reaches the very
bottom of the membrane holder. The extremity of the collecting tube must then come up to
the top of the membrane holder.
10. Be ensured that the O-ring of the membrane holder is on the membrane holder and not in
the “big cap”. Then pull the cap up and tight it with the little key (supplied).
11. Wipe off the water on the water purifier chassis to quickly detect a possible leak during the
starting up.
12. Open the tap water valve.
13. Re-plug the power plug. The POWER, PUMP and FLUSH lights are on: the water purifier is
starting a 2-minute rinse cycle of the reverse osmose membrane. Rinse is over when the
FLUSH light is off: the water purifier is producing purified water.
14. Open the storage tank valve.
15. Wait until all the filter holders are full of water. After a while, the water will come to the
purified water valve: let flowing 3 to 4 liters to correctly drain the system. In the case that
you replaced the ion-exchange resin, measure the conductivity of the purified water. It
should be close to 0 µS/cm.
16. Close the purified water valve. The water purifier is now operational.
O-Classic
operator’s manual
version: 20.01.22
23
Figure 15
Figure 14
Figure 16