3
or
or
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 Production²
10 gpd
38 lpd
TDS Reduction²
90%+ typical
90%+ typical
Drain (reject water) Flow
3–5 x product flow
3–5 x product flow
Empty Storage Tank Precharge
5–7 psig air
35–48 kPa air
Storage Tank Capacity
3
RO Mate 4E = 2.1 gallons
RO Mate 4E = 7.9 liters
RO–3 = 2.0 gallons
RO–3 = 7.6 liters
1
Industry standards measure R.O. Membranes performance with no backpressure on the product water, at 65 psig (450kPa) 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
Actual capacity measured at 50 psig, 77°±2° F, 818 mg/l TDS per ANSI/NSF Standard 58.
3
5 psig precharge and 40 psig water pressure in tank.
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)
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
None (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.
