WATER QUALITY MONITOR
–The optional
Water Quality Monitor is integrated into the system
cover for instant monitoring at the touch of a but-
ton. The monitor compares the level of the total
dissolved solids in the incoming (feed) water ver-
sus the product water and calculates the percent
rejection. The monitor is preset to indicate a level
of 75% rejection. ANSI/NSF Standard 58 requires
a 75% total dissolved solids rejection to pass the
requirement of the standard.
A green light indicates that the percent rejection is
at or above the set (desired) value and that the
system is producing quality water.
An amber light indicates that the product water
quality is less than acceptable. Because the Water
Quality Monitor was designed to operate best
while the system is making water, a false reading
may occur if tested when your R.O. drinking water
system is not making water. Please empty the
storage tank, wait 15 minutes for the system to
begin making water, and test your water quality
again. If the Water Quality Monitor light is still
amber, please contact a water treatment profes-
sional for service. The Water Quality Monitor
requires a 9 volt battery, which is included.
Systems not equipped with a Water
Quality
Monitor contain a water quality test kit.
SECTION II. SPECIFICATIONS
TABLE A – QUALIFIED SYSTEM PERFORMANCE
Because the performance of an R.O. Membrane is highly dependent upon pressure, temperature, and TDS, the following
should be used for comparison purposes only.
U.S.
Metric
Membrane Production
1
25 ± 4 gpd
79–110 lpd
Membrane TDS Reduction
1
95% minimum
95% minimum
System Production
2
8 gpd
30 lpd
TDS Reduction
2
90%+ typical
90%+ typical
Drain (reject water) Flow
2
3–5 x product flow
3–5 x product flow
Empty Storage Tank Precharge
2
5–7 psig air
35–48 kPa air
Storage Tank Capacity
2
1.8 gallons
6.8 liters
1. Industry standards measure R.O. Membranes performance with no backpressure on the product water, at 60 psig (414kPa) and
77˚F (25˚C). Further conditions on the above are 500 ppm TDS and a 15% recovery rate. Production rate and TDS reduction figures
are for a new Membrane that has been rinsed for 24 hours. The production rate of a new Membrane can decrease by 10% per year or
more, depending upon the scaling and fouling tendencies of the Feed Water.
2. Measured at 50 psig, 77˚±2˚ F, 871 mg/l TDS per ANSI/NSF Standard 58.
TABLE B – RECOMMENDED OPERATING LIMITS FOR FEED WATER
Specifications
T.F.C. Membrane
Water Pressure
40–100 psig (280–690 kPa)
TDS
2000 ppm (also mg/l) max.
Temperature 40–100˚F
(4–38˚C)Ê
pH 3–11
Hardness
Less than 10 gpg (170 mg/l) or soften
Iron
Less than 0.1 ppm (also mg/l)
Manganese
Less than 0.05 ppm (also mg/l)
Hydrogen Sulfide
None
Chlorine See
note
Bacteria
Must be potable**
NOTE: Chlorine will damage a T.F.C. Membrane. The Sediment/Carbon Prefilter will remove chlorine from the incoming water.
Change filter every 6 months, more often if the water contains more than 1 ppm chlorine.
**DO NOT USE WITH WATER THAT IS MICROBIOLOGICALLY UNSAFE OR OF UNKNOWN QUALITY, WITHOUT
ADEQUATE DISINFECTION BEFORE OR AFTER THE SYSTEM.
