North Star NSRO42C4 Installation And Operation Manual
Also see for NSRO42C4: Installation and operation manualInstallation and operation manual
                            | |
22MaintenancePREFILTER/POSTFILTER MAINTENANCENOTE: It is recommended to replace the battery,prefilter and postfilter cartridges at least every 6months of product water use. Replace more often ifthey begin to plug with sediment.The prefilter and postfilter are replaceable sedimentcartridges with activated carbon in their composition.See Fig. 29. You must periodically replace the prefilterand postfilter cartridge. This will protect the RO mem-brane from being destroyed by chlorine. It will also pre-vent the filters from plugging with sediment.You may notice a slower output of product water as theprefilter and postfilter build up with sediment. Replacethe prefilter and postfilter cartridges when this occurs.You should replace the battery whenever you replacethe cartridges.RO MEMBRANE CARTRIDGE MAINTENANCEThe Reverse Osmosis cartridge is a tightly wound spe-cial membrane. See Fig. 29. The membrane reducesthe dissolved solids and organic matter. The life of theReverse Osmosis membrane cartridge depends mostlyon the pH and hardness of the supply water (seeSpecifications). Cartridge life is shorter with higher pH.For example, if supply water pH is from 6.8 to 7.7, thecartridge may last for well over one year. However, car-tridge life may be as short as 6 months if the pH is ashigh as 8.5 to 10. Higher pH weakens the cartridgemembrane and causes pin-hole leaks. It's time toreplace the Reverse Osmosis cartridge when the pro-duction rate and/or quality of product water drops.Product water may begin to taste different, indicatingsolids and organics are passing through the ReverseOsmosis membrane. See Reverse Osmosis cartridgereplacement.REVERSE OSMOSIS CARTRIDGE REPLACEMENTComplete the following steps to replace the cartridges.NOTE: Do not remove manifold from mounts.Flexing or twisting may damage the manifold.1. Remove (turn to the left) the prefilter cartridge fromthe manifold to stop flow to the Reverse Osmosiscartridge.2. Remove the Reverse Osmosis cartridge.3. Remove the postfilter cartridge.4. Discard the cartridges in a proper manner.5. Install new cartridges in reverse order (post filter,Reverse Osmosis and then prefilter). Turn cartridgesto the right to reattach to the filter heads. Do notovertighten.6. Remove and replace the timer battery. See page 14.7. Press and hold the button on the electronics board(PWA) until the green light begins flashing. Releasethe button as soon as the light begins flashing (thelight flashes for 3 seconds and releasing the buttonbefore or after that 3 seconds will not reset the elec-tronic timer).8. Purge the Reverse Osmosis system. See page 19for instructions.PREFILTER/POSTFILTER CARTRIDGEREPLACEMENTComplete the following steps to replace the cartridges.NOTE: Do not remove manifold from mounts.Flexing or twisting may damage the manifold.1. Remove the prefilter cartridge (turn to the left) fromthe filter head. Then remove the postfilter cartridge.2. Discard the cartridges in a proper manner.3. Install new cartridges in reverse order (postfilter first,then prefilter). Turn cartridges to the right to re-attach to the filter heads. Do not overtighten.4. Remove and replace the timer battery. See page 14.5. Press and hold the button on the electronics board(PWA) until the green light begins flashing. Releasethe button as soon as the light begins flashing (thelight flashes for 3 seconds and releasing the buttonbefore or after that 3 seconds will not reset the elec-tronic timer).6. Purge the Reverse Osmosis system. See page 19for instructions.FIG. 29CoverPrefilterCartridgeManifoldPostfilterCartridgeROCartridgeTurn to the leftto remove |
Related manuals for North Star NSRO42C4
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine