2
Application Guidelines
(1)
Nominal product water ratings are based on the following conditions: Supply TDS of 250 ppm softened tap water, 50 psi (0.36 Mpa), 77
o
F (25
o
C), pH
8 and 15% recovery with outlet to atmosphere.
(2)
Rejection percentages are dependent on the supply conditions and the substance being measured.
Notes:
The performance of a reverse osmosis membrane is highly dependent upon pressure, temperature and TDS. The actual volume of product
water and rejection percentage will vary with differences from the test conditions that membrane ratings are based upon.
These drinking water systems are not intended to be used for the treatment of water that is microbiologically unsafe or of unknown quality..
Functional Description
Feed water enters the 5-micron pre-filter (combination 5 micron/carbon filter in 2 sump models), which
filters out suspended particles such as dirt or sediment. The filtered water then enters the pre-carbon filter
( in 3 sump models only), which contains granular activated carbon, which removes any chlorine from the
water. The two sump models utilize a combination 5-micron/carbon filter to filter fine particles and remove
chlorine.
Model D75TFC-3 only:
Water from the pre-carbon filter enters the scale inhibitor filter. This filter inhibits
the formation of scaling deposits on the surface of the membrane, providing better protection and longer
membrane life.
The water then enters the reverse osmosis membrane. The membrane will allow only permeate (pure
water) to pass through. The brine (waste water) goes to the drain.
Permeate then flows through a hydraulic shut-off valve to the storage tank. When the tank fills and the tank
pressure reaches 2/3 of the inlet feed water pressure, the shut-off valve closes, which turns the system
off.
When water is drawn from the faucet, permeate flows from the storage tank through the post carbon
filter. This filter contains granulated activated carbon, removing any taste and odor that has accumulated
while stored in the tank. When the tank empties, the shut-off valve opens, turning the unit on.
Model Number
D75TFC-3
E75TFC-3
E50TFC-3
E24TFC-3
E50TFC-2SF
Membrane Type
TFC
TFC
TFC
TFC
TFC
Max. Feed Water Salinity
2000 ppm
2000 ppm
2000 ppm
2000 ppm
2000 ppm
Feed Water Temperature
40-110°F
40-110°F
40-110°F
40-110°F
40-110°F
Feed Water Pressure
50-100 psi
50-100 psi
50-100 psi
50-100 psi
50-100 psi
Feed Water pH
2.0-11.0
2.0-11.0
2.0-11.0
2.0-11.0
2.0-11.0
Feed Water Supply
Chlorinated
Chlorinated
Chlorinated
Chlorinated
Chlorinated
Unchlorinated
Unchlorinated
Unchlorinated
Unchlorinated
Unchlorinated
Feed Water Hydrogen
Sulphide
None
None
None
None
None
Feed Water Manganese
<0.05 ppm
<0.05 ppm
<0.05 ppm
<0.05 ppm
<0.05 ppm
Feed Water Iron
<0.1 ppm
<0.1 ppm
<0.1 ppm
<0.1 ppm
<0.1 ppm
Feed Water Hardness
<10 gpg
<10 gpg
<10 gpg
<10 gpg
<10 gpg
Specifications
Model Number
D75TFC-3
E75TFC-3
E50TFC-3
E24TFC-3
E50TFC-2SF
Membrane Production Rate
(1)
75 USGPD
75 USGPD
50 USGPD
24 USGPD
50 USGPD
Rejection
(1)
up to 99%
up to 99%
up to 99%
up to 99%
up to 99%
Storage Tank Capacity US Gal
4.0
4.0
4.0
4.0
4.0
