23
Part I: RO BASICS
This section provides basic concepts on how an RO system works, how it performs in relation to your
house’s water condition. We hope this information helps keep your RO system running at top
performance for years to come.
1) Basic Terms
GPD = Gallons Per Day (flow rate)
PSI = Pounds per Square Inch (pressure)
TDS = Total Dissolved Solids (contaminants)
PPM = Parts Per Million (unit used to measure TDS level)
TDS Meter = A digital meter for measuring the TDS level in the water
2) Flow Diagram for 4-Stage RO System:
Fig.15
below shows how water flows through the RO system from Feed point to Output point.
Input water starts from Main Water Supply, going through stages 1, 2 pre-filters, then enters the
stage-3 membrane. Product (filtered) water from the membrane feeds the storage tank; the “drain
water” from the membrane drains out through the drain line. Product water from the tank passes
through stage-4 filter before reaching the dispensing faucet.
Fig. 15
APEC RO-QUICK SYSTEM FLOW DIAGRAM
1st Stage Filter
4th Stage Filter
2nd Stage Filter
PRODUCT
WATER
TANK
FAUCET
MAIN
WATER
SUPPLY
FEED WATER
NEEDLE VALVE
MAIN WATER SUPPLY
SHUT-OFF VALVE
CHECK VALVE
(BUILT IN)
3rd Stage
R.O. MEMBRANE
PRODUCT WATER
IN
OUT
FLOW RESTRICTOR
(BUILT IN)
INLET
TANK
BALL
VALVE
AUTO SHUT-OFF
VALVE
DRAIN WATER
DRAIN
23
Part I:
:
R
RO
O
BASICS
Th
Th
is
is
section provides basic concepts
ts o
o
n
n
ho
h
w
w
an RO system works, how it per
rfo
form
rm
s
s
in
in relation to your
ho
ho
use’s water condition. We hop
e
e
th
this
is
i
i
nf
nf
ormation helps keep your RO system
m
r
run
unning at top
performance for years to come.
1) Basic Terms
GPD = Gallons Pe
P
r Day (flow rate)
PSI = Pounds pe
pe
r
r Sq
Square Inch (pressure)
TDS = Tota
ta
l
l
Di
Di
ss
ss
ol
o
ved Solids (contaminants)
PPM = Pa
Pa
rt
rt
s
s
Pe
Pe
r Million (unit used to measure TD
TDS
S
le
level)
TDS Me
Me
te
ter
r = A digital meter for measuring
g
the
he
T
T
DS
D
level in the water
2)
2)
Flow Diagram for 4-Stage RO
O
Sy
Syst
stem
em
:
Fig.15
below shows how water
fl
fl
o
ows through the RO system from Feed point to Output point.
Input water starts from
Ma
Main
in
W
W
ater Supply, going through stages 1, 2 pre-filters, then enters the
stage-3 membrane. Prod
d
uc
uc
t
t (
(filtered) water from the membrane feeds the storage tank; the “drain
water” from the membrane drains out through the drain line. Product water from the tank passes
s
through stage-4 filter before reaching the dispensing fa
a
uc
uc
et
e
.
Fig. 15
APEC RO-
RO-QUIC
QUIC
K
K SYSTEM FLOW DIAGRAM
1st Stage Filter
4th Stage Filter
2nd Stage Filter
PRODUCT
WATER
A
A
TANK
FAUCET
MAIN
N
WA
A
TER
TER
A
A
A
SUPP
UPP
LY
LY
FEED
D
WATER
TER
A
A
NEEDLE VALVE
MAIN WATER SUPPLY
A
A
SHUT-OFF VALVE
CHECK VALVE
(BUILT IN)
3rd Stage
R.O. MEMBRANE
PRODUCT WATER
A
A
IN
OUT
FLOW
FLOW RESTRICTOR
(BUILT IN)
INLET
TA
TA
NK
BALL
VALVE
AUTO SHUT-OFF
VALVE
DRAIN WATER
A
A
DRAIN
Summary of Contents for Ultimate RO-QUICK90
Page 2: ......