2
2. CONSTRUCTION
[a] EXTERIOR
[8] Sanitizing water vent (25A)
[9] Sanitizing water outlet (20A)
[10] Adjustable legs
Keep the unit level and stable.
[11] Power cord (with plug)
If the power cord is damaged, it must be replaced by a special cord or
assembly available from the manufacturer or its service agent.
[12] Grommet
Receives the cable from the operation box (option).
[1]
[2]
[3]
[4]
[5]
[6]
[7]
(Front)
[8]
[9]
[10]
(Rear)
[11]
[12]
[1] Cleaning water outlet (20A)
[2] Neutralizer vent (25A)
[3] Cleaning water vent (25A)
[4] Water tank (left)
Holds cleaning water in normal dispensing mode and sanitizing water
in reverse dispense mode.
[5] Water tank (right)
Holds sanitizing water in normal dispensing mode and cleaning water
in reverse dispense mode.
[6] Salt chute door
Open to add in salt.
[7] Operation panel
Indicates the state of operation. See “[c] OPERATION PANEL”.
In the context of this manual, the term "sanitizing water" refers to
acidic water and "cleaning water" refers to alkaline water.
1. PRINCIPLE OF ELECTROLYSIS
4
Reactions at Anode
Chloride ions (Cl
-
) and hydroxide ions
emit electrons (e
-
) to the anode, which
become hypochlorous acid (HOCl).
Reactions at Cathode
Sodium ions (Na
+
) receive electrons (e
-
)
from the cathode and become sodium
metal (Na) which reacts with water (H
2
O)
and becomes sodium hydroxide (NaOH)
and hydrogen gas (H
2
).
DC Power Supply
Hypochlorous Acid
(HOCl)
Sodium Hydroxide
(NaOH)
Cathode
(RED)
Anode
(OX)
Positive ions drawn
to cathode
Cl
-
Negative ions
drawn to anode
Salt Water (NaCl)
Diaphragm
Electrolytic Cell
Flow of electrons
Cl
-
H
2
O
H
2
O
Na
Na
Na
+
Na
+
Na
+
OH
-
OH
-
2e
-
2e
-
H
2
HOCl
Reactions at Anode
Chloride ions (Cl-) and hydroxide ions emit electrons (e-) to the
anode, which become hypochlorous acid (HOCl).
Reactions at Cathode
Sodium ions (Na+) receive electrons (e-) from the cathode and
become sodium metal (Na) which reacts with water (H
2
O) and
becomes sodium hydroxide (NaOH) and hydrogen gas (H
2
).
Salt water contains four kinds of ions; sodium ions (Na+), chlorine
ions (Cl-), hydrogen ions
(H+) and hydroxide ions (OH-).
NaCl + H
2
O
→
Na
+ + Cl- + H+ + OH-
(Mix water and salt)
Salt water (4 kinds of ions)
When two electrodes are inserted into salt water and voltage is
applied:
Negative ions (Cl-) are drawn to the anode, and
Positive ions (Na+) are drawn to the cathode.
At the anode, hydrogen chloride (HCl) and hypochlorous acid (HOCl)
are generated.
2Cl- + H
2
O
→
HCl + HOCl + 2e
-
Electrons (2e-) are emitted to the anode, which means the acidic
water (HCl + HOCl) causes
oxidization. [As electrons are emitted, the oxidization/reduction
potential becomes positive (+mV).]
Chlorine ions also emit electrons and become chlorine gas (Cl
2
).
2Cl-
→
Cl
2
+ 2e-
(Cl
2
= chlorine gas)
At the cathode, sodium hydroxide (NaOH) and hydrogen gas (H
2
) are
generated.
Na+ + H
2
O + H+ + 2e-
→
NaOH + H
2
Electrons (2e-) are received from the cathode, which means the
alkali water (NaOH) causes reduction. [As electrons are received, the
oxidization/reduction potential becomes negative (-mV).]
