Reverse Osmosis (RO) Drinking Water System
Model RO450/RO450M
Installation & Maintenance Manual (Please save for future reference)
INTRODUCTION
The Rainfresh RO system uses hyper-filtration technology (commonly called Reverse Osmosis or RO). The four-stage filtration
system reduces molecular and ionic contaminants by up to 99% - Barium, Cadmium, Chromium, Copper, Fluoride, Lead, Mercury,
Nitrates, Sodium, Total Dissolved Solids, Chlorine,Taste and Odour. It also traps protozoan cysts (Cryptosporidium & Giardia) greater
than 99.95% and filters sediment, silt and rust. Water produced by the Rainfresh RO system can be used for drinking, cooking, juices,
beverages, watering plants, steam irons, humidifiers, aquariums etc.
OPERATING SPECIFICATIONS
(1)
Do not use with water that is microbiologically unsafe or of unknown quality, without adequate disinfection before or after the system. Systems certified
for cyst reduction may be used on disinfected water that may contain filterable cysts. For effective disinfection we recommend Rainfresh Whole-house
UV disinfection systems.
Warning: Individuals requiring water of specific microbiological purity should follow the advice of their doctor or local health unit.
(2)
If water pressure can exceed 100psi, a pressure regulator and water hammer arrestor must be installed before the filter. Recommended regulator
setting is 60-75 psi.
(3)
System will operate with hard water, but membrane life may be shortened.
The unit should be operated with water that meets the following minimum criteria. Source water exceeding chemical parameters (listed
below) requires pre-treatment.
Raw Water Supply Chemical Parameters
Water Supply = Bacteriologically Safe
(1)
Max Hardness < 170mg/L (<10 gpg)
(3)
Feed Water Pressure = 40 (min) to 100 psi (max)
(2)
Iron (Fe) < 0.1 ppm (mg/L)
2.8 Kg/cm
2
to
7.4 Kg/cm
2
Manganese (Mn) < 0.05 ppm (mg/L)
Feed Water Temp. = 4ºC - 38ºC (40ºF - 100ºF) Hydrogen Sulfide = 0.00 ppm (mg/L)
Feed water pH = 3.0 to 11.0 Feed Water TDS (max) = 1500 ppm (1500 mg/L)
Feed Water Turbidity = 1.0 NTU (max)(NTU - Nephelometric Turbidity Unit
Production Rate = 18.1 US gpd (68.5 Lpd)
Average efficiency rating - 9.7% - Efficiency rating means the percentage of the influent water to the system that is available to the user as RO treated water
under operating conditions that approximate typical daily usage.
Average recovery rating - 18% - Recovery rating means the percentage of the influent water to the membrane portion of the
system that is available to the user as RO treated when the system is operated without a storage tank or when the storage tank is bypassed.
This system is acceptable for treatment of influent concentrations of no more than 27 mg/L nitrate measured as N and is certified for nitrate reduction only for
water supplies with a pressure of 40 psig (280 kPa) or greater.
For optimum performance of the system, filters should be replaced as per following:
Pre-filter 1& 2 - Model CF2: Replace every six months
Post-filter - Model IM200: Replace every six months
RO Membrane - Model ROM50: Replace every 2-4 years
Note : Cartridge and membrane life is directly dependent on your water conditions and the volume of water filtered. Excessive
sediment and other contaminants may require more frequent replacement.
Note: This reverse osmosis system contains a replaceable membrane critical to the effective reduction of total dissolved
solids . Raw and product water should be tested every six months by a water analysis lab to verify that the system is perform-
ing properly. Only replacement membrane model RO50M should be used to assure the same efficiency and contaminant
reduction performance.
Nitrate Reduction Performance
A Nitrate test kit is included witht this system to verify Nitrate-reduction performance. The test should be performed at installation
(after 3 tank flushes) and at least every six months thereafter.
Instructions: The test kit included has two test strips. You need only one test strip per test. Follow instructions on the test package.
Compare the colour to the test strip with the nitrate nitrogen colour shades on the test package. The colour should match with10 ppm
or less.
Additional testing and verification for reduction of Barium, Cadmium, Chromium, Copper, Fluoride, Lead and Chlorine performed by
independant laboratory. Claims not performance certified by WQA gold seal program.
Tested and Certified to NSF/ANSI standard 58 for the reduction of TDS, Nitrate, Mercury, Sodium, Cyst
(e.g. Cryptosporidium & Giardia).
System tested and certified by the Water Quality Association against CSA B483.1
1.
To Next Page
Need help?
General
