Crane EPRO-150 - Page 12

Feed Water Requirements
Nothing has a greater effect on a
Reverse Osmosis System than the
feed water quality. For lasting
performance it is important to supply
the reverse osmosis system with the
feed water quality shown below on
Table 3. It is also important to feed
the system the required amount of
feed water, shown on Table 1 on
page 6, and Table 2 on page 7.
Note: The EPRO Tap Water
Systems’ projected output is based
on feed water with a TDS of 500
ppm or less at 77°F. Higher TDS
and/or lower temperature will reduce
system production.
Note: It is very important to meet
feed water requirements. Failure to d
so will cause membranes to foul and
void the warranty.
<1 grain 0 ppm
0 ppm <0.05 ppm
<1000 ppm <1 ppm
<5 40°F - 80°F
3-11 8°C - 27°C
<0.01 ppm 20 - 60 psi
<1 ppm
Pressure
Tem
p
erature Turbidit
y
SDI
Ph
Iron
Silica
Table 3: Recommended Feed Water Quality
Hardness
Free Chlorine
T.D.S. Or
g
anics
Man
g
anese
H
y
dro
g
en Sulfide
EPRO 150-8000 O&M MANUAL Rev.04/03 Page 10 of 55