FILTER FLUSHING PROCEDURES
Filter Flushing Procedures for W9 Filter Configuration
All filters and RO membranes must be flushed sufficiently prior to installation.
NOTE:
The ball valve located on the filter box will turn off the water to the filters and RO membrane. Turn
to closed position before removing filters. Remember to open the valve after replacing filters to
turn the water back on.
Flushing the Purification for the Wellsys W9 RO:
1. Install the supply water line to “Water In” bulkhead and water drain line to “RO Drain” bulkhead in
back of unit.
2. Do not plug the system into the AC socket. (No Power)
3. Remove lower front panel to access filters. Remove single screw behind drip tray, push down on
the front panel and then gently pull the panel off.
4. Remove the sediment, carbon and post carbon filters and flush on a pre- flush station for 5
minutes each.
5. Reinstall the sediment and carbon filters in their original places.
6. Connect the drain line to the bottom of the RO and then install the RO membrane in the vacant
filter head.
7. Add a drain line to the output of the last filter head.
8. Turn on the water to the filters, plug the system in and let the water run for 30 minutes or greater.
9. Check the TDS
a. Prior to turning off the water supply, ensure:
b. For RO only systems, the TDS is .02% vs the tap water TDS (98% reduction).
c. For Systems using the Mineral filter, the TDS will increase about 20 ppm higher than
the output directly from the RO.
i. If you have issues achieving these reading, make sure you have 60-70 PSI
feeding the system, the drain is not restricted in any way including a
reversed check valve, the inline flow restrictor is in place and working
properly and the unit is properly flushed. Please contact technical support
for further assistance.
10. Filter flushing is now complete.
11. Replace lower front panel
NOTE Example of RO Drain Installation:
Check UPC & Local Plumbing Codes to
confirm that all connections are in
compliance.
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