WFRO60X-1
16
V4.5E
CHECK VALVE
The check valve is vital for proper operation of the Reverse Osmosis system. The check valve ensures that the product water
is flowing in the proper direction, and does not allow it to flow backwards. If the check valve requires service, disassemble by
removing the (5) screws and assemble as shown.
AUTOMATIC SHUT-OFF
The automatic shut-off conserves water when the storage tank is full by turning the system off until more product water is
needed. If the automatic shut-off requires service, disassemble by removing the (5) screws and assemble as shown.
CHANGE QUICK CONNECT COLLET AND O-RING
1. Remove the collet and O-ring from the fitting with a small screwdriver. Be careful not to scratch the internal walls of the
collet port.
2. Clean collet port, lubricate and insert the O-ring seal into the bottom of the port.
3. Push the collet inward until it locks in place.
REVERSE OSMOSIS TROUBLESHOOTING GUIDE
LOW WATER QUANTITY
POSSIBLE CAUSE
SOLUTION
Incoming water temperature is cold
The water temperature is one of the key factors in the performance of the RO membrane. The higher the temperature, the higher the flow
rate, and vice versa. All RO Membrane elements are tested and rated at 77° Fahrenheit. Ensure the RO is installed in a heated area of the
home.
Incoming water has extremely high level of
Total Dissolved Solids (TDS)
Incoming TDS level is one of the key factors determining the flow rate of the RO membrane. More TDS requires more time for the
membrane to remove - no solution is required. Ensure incoming TDS does not exceed 2000 ppm.
Low incoming water pressure
Incoming water pressure is one of the key factors determining the flow rate of the RO membrane. Higher pressure will enable a higher flow
rate. Pressure must be above 40 PSI for proper operation. You may need to install a Booster Pump or Permeate Pump if your pressure is
below 40 PSI.
Feed water valve is plugged or closed
Open valve or unclog.
Carbon pre-filter is clogged
Replace Filter with DuPont model number WFQTC30001.
Reverse Osmosis Membrane is fouled
Make sure incoming water pressure is within operating limits. Make sure drain line is not clogged. Correct cause of fouling or replace RO
Membrane.
Air pressure in holding tank is incorrect
Empty water from holding tank. Air pressure in valve stem should be between 5 - 7 PSI. Increase PSI similar to adding air to bicycle tire.
Air Bladder in Holding Tank is ruptured
Replace Holding Tank. Call Customer Service for replacement.
No water to drain. Drain Flow Restrictor is
clogged.
Remove tubing from membrane drain port, cut 1” length off end of tubing and add new restrictor.
No water to drain. Air Gap Faucet is clogged.
Remove faucet body from faucet base and disconnect drain 3/8” tubing. Ensure the drain connector is properly aligned with the hole in the
drain pipe. Ensure there are no obstructions - clear them out. Remove faucet body from faucet base and disconnect air gap 1/4” tubing.
Ensure there are no obstructions - clear them out. Replace Air Gap Faucet.
Check Valve on RO Membrane Housing is
stuck.
Replace Whole Check Valve Assembly. Refer to maintenance section.
The Automatic Shut-Off Valve is
Malfunctioning.
Replace Automatic Shut-Off Valve. Refer to maintenance section.
Auto
Shut-Off
Valve
