Yamato Scientific WS220 Water Purifiers - Manual (Page 14)

10
Description and Function of Each Part
Piping System View
① Water supply port ⑨ Heater
② Solenoid valve ⑩ Heater integument pipe
③ Fixed flow rate valve ⑪ Boiler
④ Micro switch (Heater control) ⑫ Condenser
⑤ Float ⑬ Float switch
⑥ Float tube ⑭ Tank
⑦ Drain port ⑮ Water cock
⑧ Manually cock ( Boiler drain)
Mechanism
1) Water Supply (cooling water, boiler water)
Raw water is controlled to a specified flow rate (about 0.8 liter/min.) by the fixed flow rate
valve, and heat-exchanged in the condenser ⑫ as the cooling water, and then supplied to the
boiler ⑪ via the float tube ⑥, thus overflowing if exceeding the specified level finally to be
drained to outside.
2) Distillation
When the boiler ⑪ reaches the specified water level, the float ⑤in the float tube ⑥ goes up,
and detects the water level, and the heater⑨is turned ON to start distillation. The water
boiled in the boiler turns to steam, cooled/condensed in the condenser ⑫, and then pooled in
the tank as distilled water.
3) Full Tank
When the tank ⑭ reaches the specified amount of water of about 20 liter, the float switch ⑬
trips, and the solenoid valve (for supplying water) ② turns OFF, preventing the water supply
to the main unit, while the heater ⑨ turns OFF to stop distillation. When any specified
amount water has been sampled from the tank, distillation will be restarted.
4) Sampling Water
The distilled water pooled in the tank ⑭ can be sampled by opening the water cock ⑮.
WS200 ⑩
WS220
Water supply Water drain
Sampling