Yamato Scientific WG221S Water Purifiers - Manual (Page 44)

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Maintenance
Cleaning Still
Cleaning the condenser
1. Pour the scale detergent into the cooling pipe of the condenser.
(See page41 about the preparing scale detergent )
2. If the cleanser comes out from the hose joint, stop the hose joint by silicone stopper etc. Almost all
fur is removed in about 4 or 5 hours.
3. After the scale detergent drained, wash the inside of condenser by tap water thoroughly.
About the treatment of the cleanser ( See page16 “Caution for Use”)
1. Wash the boiler and the heater a little early. The more the amount of the scales adhesion is, the more
difficult you remove it. And it may cause that the amount of taking distilled water decreases and the
heater is broken.
2. After washing, drain the cleanser from them and neutralize cleanser by the neutralizer. Check by a PH
indicator if cleanser is neutralized irrigation channel or fields. (the main ingredient of the scales
cleanser : sulfamic acid , PH of the solution : about PH1 acid)
3. Keep the cleanser in an airtight container, avoid preservation in hot and humid areas, and keep in cool
and dark areas.
4. Wear protective gloves, mask and glasses to handle the cleanser.
5. Wash by pure water the cleanser splashing on body.
6. Do not use the vacant cleanser container as a drink bottle.
7. Do not drain the cleanser directly into an agricultural irrigation channel or fields. The cleanser can kill
rice plants and other farm products.
Installation of the boiler
1. Set the joint (to the condenser) level by the band for boiler fixed.
After you check that there is packing in the cap nut, insert it into the boiler with the characters “YK-W-3”
upward.