WFRO60X-1
V4.5E
17
LOW WATER PRESSURE FROM DISPENSING FAUCET
POSSIBLE CAUSE
SOLUTION
Air Pressure in Holding Tank is incorrect.
This is the #1 reason for low flow from Reverse
Osmosis Faucet.
Open faucet and empty water from holding tank. Shut off feed water to system and remove holding tank from under sink (the tank is easier
to work on).
Locate the air valve stem (just like on a car or bicycle tire) and add air. If there is still water in the tank, continue to add air until all the water
is removed.
Once all the water is removed, continue to add air and pressurize to 5 - 7 PSI.
Re-install the tank under the sink, turn on the feed supply to the system and allow the tank to fill.
Carbon Post Filter is clogged.
Replace Post Filter with DuPont model number WFQTC300001.
Heavy water use. Holding Tank is empty.
Allow Holding Tank to refill.
Low Water Production.
See previous section on Low Quantity of Water from Holding Tank.
PRODUCT WATER IS HIGH IN TOTAL DISSOLVED SOLIDS (TDS)
POSSIBLE CAUSE
SOLUTION
Clogged Pre-filter.
Replace Pre-Filter with DuPont model WFQTC30001.
Low incoming water pressure.
Incoming water pressure must be above 40 PSI. Install a Booster Pump or Permeate Pump.
Reverse Osmosis membrane is expended.
If Membrane life is unusually short, find and correct the problem (Average life is 1 - 2 years). Replace RO Membrane.
Product water and drain water lines are
reversed.
Correct plumbing according to installation instructions.
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 air gap 1/4” tubing. Ensure there are no obstructions - clear them out. Replace Air
Gap Faucet. 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.
The Automatic Shut-Off Valve is not closing.
Repair or replace Automatic Shut-Off Valve. Refer to maintenance section.
New Carbon Post-filter has not been rinsed
completely.
Drain Holding Tank twice to rinse new Carbon Post-filter. TDS.
The incoming feed water TDS has increased.
An increase in feed water TDS will also give an increase in Product Water TDS.
FAUCET CONNECT FITTINGS LEAK
POSSIBLE CAUSE
SOLUTION
Water leaks from
faucet spout.
Ensure the faucet spout is properly seated. Repair or replace the faucet.
Leaks from
connection to the
faucet.
Check and fix compression fittings to the faucet. Repair or replace the faucet. Turn off the cold water
shut-off valve to the Filter System to release pressure in the System. Loosen and remove the Compression
Nut on the Faucet for Filtered Water Stem. Check the 1/4” Plastic Tubing to see if it is cut squarely. Make
sure the 3/8” Plastic Tubing is placed firmly into the end of the Faucet Stem; retighten the Compression
Nut securely by hand; then tighten 1/2 turn with an adjustable wrench. Make sure tube insert is inside the
tubing and the ferrule is in proper orientation. Turn the cold water shut-off valve back on and turn on the
Faucet for Filtered Water.
