Yamato Scientific WG221S Water Purifiers - Manual (Page 48)

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Maintenance
When you do not use the unit for a long time
If you do not use the unit for a long time, turn off the unit breaker for safety
and close the faucet. Water in the boiler and the distilled water tank
deteriorates its quality by the growth of unwanted bacteria and algae. Drain
as follow.
Draining boiler water
(1) Before draining the boiler water, turn off the unit
breaker , check if faucet is closed , and wait for
30 minutes or longer.
(2) Open the valve to drain the boiler water.
(3) Make sure if all water is drained from the boiler
and float receptacle.
(4) Close the boiler water draining valve. If the
drain valve remains open in the next use of the
unit, water would not flow into the boiler or start
distillation.
Draining distilled water
(1) Make sure if the unit breaker is turned
off. Open the front door.
(2) Pull out the hose to drain distilled water
set at the upper left on the back of front
door.
(3) Remove the silicone stopper to drain the
distilled water from the tank. Check in
advance the remaining water level in the
tank, and prepare receptacle for
drainage.
(4) Be careful not to set the drain hose
higher than the bottom level of the
distilled water tank, or more tank water
remains in the tank.
(5) Install the silicone stopper at the point
tightly,and Insert stopper securely in the
original folder after completing drainage.