Important Information & Performance Parameters
Reverse Osmosis is the most efficient and cost-effective way to remove the majority of all
contaminants from your water. The key component of the system are the RO membranes composed
of tightly wrapped sheets of a semi-permeable material. Under pressure, the membrane allows
pure water to pass through it and rejects, or flushes away, most impurities down the drain.
That is why all RO systems have a certain amount of waste water. The ratio of waste water is
determined by the Flow Restrictor installed in the Flow Restrictor/Flush Kit Assembly. The system
comes with a choice of
1:1
and
Flow Restrictors. Refer to pg. 7.
The flow of purified water is determined by the GPD rating of the membrane, inlet pressure
and inlet temperature. The
stealth-RO300
has the capacity to produce 300 gallons per day
(approx. 12.5 gallons/hour when your inlet water is at 77°F, 60 psi, 500 PPM). If your inlet
pressure is less than 60 psi, you may experience less than the rated 300 GPD flow rate. A
minimum of 40 psi is required to operate the system. The higher the inlet pressure, the better the
flow. A booster pump is available as an option in case of low pressure and is necessary if your
pressure is below 40 psi (
HL 29020
see pg. 15) .
You will notice that in colder areas or in the winter, when water temperatures
are lower, the flow rate will be slower.
Inlet water that is very high in total PPM or very hard with calcium or magnesium, or high
in certain contaminants such as iron or silica, may shorten the life of the membranes and/
or cause slower flow rates. The RO membranes can handle inlet water up to 1,000 PPM and
with a hardness up 10 grains per gallon (170 PPM). Note that this is considered both very
contaminated and very hard water and may result in a shorter membrane lifespan. At these
levels of contamination and hardness, and especially beyond, you may consider pre-treatment
in the form of a water softener or other equipment. Softened water can be run through your
stealth-RO
system for optimal performance. The membranes in the
stealth-RO
is capable of
removing 99% of salts that are introduced by the softener. Contact HydroLogic for more info at
888-426-5644.
All RO systems exhibit “TDS creep”. The first few ounces of RO water produced
are higher in PPM than after the system has run for a few minutes. Take any
PPM readings a full five minutes after turning the system on to ensure accuracy.
PERFORMANCE
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