21
4.Operating procedures
Water quality characteristics data (reference)
The use life of the ion exchange resin cartridge is about 700L (at electric conductivity of 200×10
-4
S/m).
One of water quality characteristics of water immediately after replacement of the ion exchange resin
cartridge is the transient characteristic above which requires several minutes to be stable. Thus fill the
3L tank immediately after replacement of the ion exchange resin cartridge and then discharge water in
the tank completely at the discharge port. Use the data as a reference only since the same results will
not be always obtained depending on the specific cartridge or raw water quality.
0
2
4
6
8
10
12
14
16
18
20
0
100
200
300
400
500
600
700
800
※
Tap water of Yamanashi Pref.
･･
electric conductivity: 200×10
-4
S/m
Total water amount(L)
S
p
e
c
ifi
c
r
e
s
is
ta
n
c
e
(
×
10
4
Ω・
m
)
Time (minute)
S
p
e
c
ifi
c
r
e
s
is
ta
n
c
e
(
×
10
4
Ω・
m
)
