Labconco WaterPro RO 90750 Series, User Manual, Page: 32 / 48

Chapter 5: Maintaining Your WaterPro RO System
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Original Instructions
Preserving RO Membrane
If the system will not be in use (without electricity) for over a week, preserve with 0.1%
formaldehyde.
1. Collect approximately 4 liters of RO water in a container. Set aside.
2. Shut off the fee-water valve and relieve the water pressure in the unit by pressing the
dispense button.
3. Disconnect from the electrical supply. Remove both 20" prefilter and 20" carbon/prefilter
cartridges. Do not remove RO membrane.
4. Carefully wash inside the prefilter bowl, carbon/prefilter bowl and storage tank with liquid
detergent using a clean sponge or cloth. Rinse out the bowls and tank several times to
remove any residue.
5. Prepare 0.1% formaldehyde in the RO water collected in Step 1.
6. Install a new 20" prefilter cartridge, catalog number 9021000 in the first bowl from the
right.
7. Fill the carbon/prefilter bowl with the 0.1% formaldehyde.
8. Reinstall the bowls in their correct position.
9. Plug the unit into the electrical outlet. Reopen the feed-water valve.
10. Activate the unit and allow it to operate for 5 – 10 seconds.
11. Close the feed-water supply and disconnect the electrical source.
Service Tips
WARNING: The WaterPro RO automatically starts and stops at intervals
during nonuse. To prevent the possibility of water spillage or electrical shock,
always unplug the unit prior to servicing the unit.
AVERTISSEMENT : Le système WaterPro RO démarre et s’arrête
automatiquement par intervalles au cours de la non-utilisation. Afin de
prévenir les risques de fuite d’eau ou de choc électrique, débranchez toujours
l’appareil avant de commencer l’installation.
!