Hydrotech PURA QCRO Series Quick Change Reverse Osmosis Drinking Water System - Manual (Page 30)

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Problem Possible Cause Remedy
4. External leakage. a. Tubing not fully seated in fitting a. Check all fittings for tightness.
b. Tubing abraded in seal area. b. Recut tubing and redo connection.
5. Overflow at
faucet air gap
(gurgling sounds).
a. Concentrate tubing plugged. a. Clean concentrate tubing of debris.
b. Air gap plugged. b. Clean with vinegar and/or soap.
c. Concentrate tubing not in continuous
downward slope.
c. Eliminate loops or low spots in tubing.
d. Obstructed home drain pipe. d. Free obstruction.
6. Foaming at
faucet tip.
a. Storage tank is positioned on side
(Dissolved air cannot escape.)
a. Place tank in vertical position.
7. Foaming at air-
gap
a. Concentrate tubing connected to same
drain line as dishwasher, etc.
a. Find different drain for system.
b. When sink is full of soapy water and plug is
pulled, can back up at air-gap.
b. Obstructed home drain, free obstruction.
c. Obstructed home drain. c. Free obstruction.
8. Bad smell from
product water.
a. Polishing filter exhausted. a. Replace polishing filter.
b. Prefilter element. b. Replace filter element.
c. Unit needs disinfection. c. Sanitize unit.
9. Fast flow to drain. a. Defective flow control assembly. a. Replace flow control assembly.
10. Black specks in
product water.
a. Carbon fines. a. Flush polishing filter.
11. Low faucet
pressure.
a. Inadequate pre-charge pressure in
storage tank.
a. Determine the minimum pressure using the
70% guideline.
b. Polishing filter plugged. b. Replace polishing filter.
12. Flow control
plugging.
a. Excessive turbidity. a. Install another 5 micron filter in series with
existing one or substitute carbon block
filter for granular activated carbon filter.
b. Iron fouled. b. Pretreat for iron removal.
c. Iron-bacteria fouled. c. Sanitize plumbing.