Description and function of each part, Piping system view – Yamato Scientific WS220 Water Purifiers User Manual
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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