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U8AA5540012
[a] Acid Water pH, Alkaline Water pH [No. 1, 2]
Always use the accessory pH test paper or a pH tester on the market to check pH.
Carefully read the instructions provided with the test paper or tester, and use it properly.
[b] Available Chlorine Concentration (Acid) [No. 3]
Always use the accessory test paper or the thiosulfuric acid titration specified below to check
available chlorine concentration.
Carefully read the instructions provided with the test paper, and use it properly.
If the available chlorine concentration is below the specified level (it also depends on the
original water quality), be sure to adjust the amperage and voltage to make the concentration
reach the specified level.
Thiosulfuric Acid Titration
< Instruments >
Erlenmeyer flask (100mL - 200mL)
Measuring cylinder (50mL)
Measuring pipet or syringe (graduated by 0.1 or 0.5mL)
Reagents: Potassium iodide (KI)
Sodium thiosulfate (1/100N)
1) Wash the Erlenmeyer flask, measuring cylinder and measuring pipet with tap water.
2) Take 35.4mL of acid water in the cylinder, and pour it gently into the flask.
3) Put some potassium iodide (two or three grains) into the flask, and stir it lightly. The acid
water will turn orange.
4) Take some sodium thiosulfate (1/100N) with the pipet, and read it.
5) Drop the sodium thiosulfate (1/100N) little by little into the flask while stirring it lightly. When
the acid water starts losing its color, drop the reagent with special care.
6) When the acid water turns from orange into clear, stop dropping the reagent and read the
pipet.
7) The dropping amount (mL) x 10 will be the available chlorine concentration (mg/L). For
example, if the dropping amount is 4.5mL, the available chlorine concentration will be
45mg/L.
[c] Cell Replace Lamp [No. 8]
The flashing Cell Replace Lamp indicates that the Electrolytic Cell has run for 2900 - 3000
hours and should be replaced soon.
The lighting Cell Replace Lamp indicates that the Electrolytic Cell has run for 3000 hours or
more and needs immediate replacement.
[d] Water Softener [No. 15]
Carefully read the instructions provided with the water softener, and use it properly.
Check that the water softener is set to start regeneration while electrolyzed water is not
dispensed (ex. 2:00AM).