23
AQUASURE
PREMIER SERIES
CAUSE:
CORRECTION:
A
Air pressure in holding tank is incorrect. This is
the #1 reason for low flow from reverse osmosis
system.
Open faucet and empty water from holding tank. Shut
off feed water to system and remove holding tank
from under sink. Locate the air valve stem and add
air. If there’s 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 8 psi.
Re-install the tank under the sink, turn on the feed
water supply to the system and allow the tank to fill.
B
Carbon post filter is clogged
Replace post filter.
C
Holding tank valve is partially closed
Open tank ball valve fully.
D The faucet is out of adjustment of faulty.
Repair or replace the faucet
E
Heavy water use. Holding tank is empty.
Allow holding tank to refill for about an hour or so
before using the water.
F
Low water production
See “Not enough water from holding tank” for
troubleshoot.
3. Low water pressure from dispensing faucet
CAUSE:
CORRECTION:
A
Air gap is clogged
Clear Air Gap
B
Drain line is clogged
Clear Tubing
C
Drain flow rate is too high
Replace flow restrictor
4. Drain water overflows at the air gap faucet
CAUSE:
CORRECTION:
A
Clogged pre-filters
Replace Filter
B
Low Incoming water pressure
Incoming water pressure must be above 40 psi. Install
a booster pump or permeate pump
C
Reverse osmosis membrane is expanded
If membrane life is unusually short, check the TDS
level of incoming water to see if it exceed the range
of recommended operating condition. Pretreatment
may be needed if the incoming TDS level is too high.
An average life of membrane should be around 2 - 3
years. Replace the RO membrane
D Product water and drain water line are reversed
Check the connection and correct plumbing
E
No water to drain. Drain flow restrictor is
clogged.
Replace drain flow restrictor
F
No water to drain. Air Gap faucet is clogged.
Clear or replace air gap faucet
G The automatic shut-off is not closing
Repair or replace automatic shut-off valve
H New carbon post-filter has not been rinsed
completely
Drain holding tank twice to rinse new carbon post-
filter
I
The incoming feed water TDS has increased
An increase in feed water TDS will also give an
increase in product water TDS
5. Product water is high in total dissolved solids (TDS)
