REEF PURE RO SYSTEMS
RO/DI SYSTEM USER MANUAL
Reef Pure RO Systems
©
2019
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WHY IS THE TDS COMING OUT OF MY RO MEMBRANE REALLY HIGH WHEN I FIRST TURN MY SYSTEM ON?
This is perfectly normal and is called TDS creep. This occurs once the system has been turned off and
wastewater tries to equalise with pure water in the RO membrane chamber. Once the system has been
running for about 5 minutes, this should no longer be observed.
MY HOME’S WATER PRESSURE IS BELOW 65 PSI, DO I NEED A BOOSTER PUMP?
Your system will operate with water pressure below 65 psi, however it will not function optimally. You will
produce more than usual wastewater and your product water will have a higher TDS, which in turn will
exhaust your DI resin much sooner. If your home’s tap water pressure is closer to 50 psi, then these effects
will be signi
fi
cant and troublesome. In this case we would highly recommend the addition of a booster
pump.
WHAT TDS READING SHOULD I EXPECT OUT OF MY RO MEMBRANE?
There are a number of environmental variances that will affect the TDS that you will achieve after your
RO membrane, before the DI resin stage. The largest factor is the beginning TDS of your tap water,
followed by the feed in water pressure. Pure-Pro RO membranes will achieve a 98% salt rejection rate
when provided with 50 psi in pressure for a single membrane or 65 psi for 2 membranes installed in series.
This means that if your starting tap water TDS is 200 ppm, then the TDS after your RO membrane would
be 4 ppm.
THE DI RESIN ON MY SYSTEM SEEMS TO BECOME EXHAUSTED VERY QUICKLY, WHY IS THIS HAPPENING?
The rate at which your DI resin will become depleted will vary depending on 2 major factors. The most
signi
fi
cant factor is the TDS value of the water being fed into the DI resin stage. The higher the TDS
reading of the water coming out of your RO membrane, the more remaining contaminants your DI resin
will need to
fi
lter, thus exhausting it sooner. Secondly, high levels of dissolved carbon dioxide in your
home’s water supply will also exhaust DI resin much sooner.
MY SYSTEM IS NOT PRODUCING MUCH WATER OR IT IS TAKING TOO LONG, WHY?
The RO membranes on this system are rated at 50 Gallons Per Day (189 Litres Per Day) for Essentials/
Ess systems and 100 Gallons Per Day (378 Litres Per Day) for Premium systems. That is
approximately 7.8 litres per hour for Essentials/Ess systems or 15.8 litres per hour for Premium
systems. If your system is producing less than this, please consider that your water pressure may be
below the required 65 psi, which is what is required to achieve the speci
fi
ed water production rates.
Need More Help? We are here for you! Please get in touch and let us know how we can
assist you…
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1300 110 805
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