Reverse Osmosis RF Series User Manual page 17

Low water production.
Product Water is High in Total Dissolved Solids (TDS)
Possible Cause
Clogged prefilter.
Low incoming water pressure.
Reverse osmosis membrane is not
correctly sealed in membrane housing.
Reverse osmosis membrane is
expended.
Product water and drain water lines are
reversed.
No water to drain. Drain flow restrictor is
clogged.
No water to drain. Air gap faucet is
clogged.
The automatic shut–off valve is not
closing.
New carbon postfilter has not been
rinsed completely.
The incoming feedwater TDS has
increased.
Tastes and Odors in Product Water
Possible Cause
Carbon post filter is exhausted.
There is foreign matter in holding tank.
Product water and drain water lines are reversed.
Dissolved gases in feedwater.
Increase in product water TDS.
Drain Water Overflows at the Air Gap Faucet
Possible Cause
Air gap is clogged.
Drain line is clogged.
Drain flow rate is too high.
Faucet Leaks or Drips
Possible Cause Solution
Water leaks from Adjust faucet by turning the tee bar located under the handle to provide a small amount of
faucet spout. free play in the handle when shut off. Should this not work, repair or replace the faucet.
Leaks from beneath
Repair or replace the faucet.
the handle.
RF – Series User Manual
MKTF – 167-C
See section on Low Quantity of Water from Holding Tank.
Solution
Replace filter.
Incoming water pressure must be above 40 PSI. Install a booster pump
or permeate pump.
Check that the reverse osmosis membrane is correctly installed.
If membrane life is unusually short, find and correct the problem.
(Average life is two to three years.) Replace Reverse Osmosis
membrane.
Correct plumbing.
Replace drain flow restrictor.
Clear or replace air gap faucet.
Repair or replace automatic shut–off valve.
Drain holding tank twice to rinse new carbon postfilter.
An increase in feedwater TDS will also give an increase in product water
TDS.
Solution
Replace filter.
Clean, flush and sanitize the holding tank. Replace filters.
Correct plumbing.
Pre–treat feedwater to remove gasses.
See High TDS in Product Water Section
Solution
Clear air gap
Clear tubing.
Replace flow restrictor.
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