
19
3. Description and Function of Each Part
Principle of Operation
(3) Flow of Cooling Water
During distillation, water is supplied and discharged in the order:
①
pressure-reducing valve,
③
cooling
water solenoid valve and condenser
⑰
. When the distilled water tank is full, or when ion exchanged
water is sampled, distillation is stopped, and the cooling water is also stopped automatically.
(4) Sampling of Distilled Water
Distilled water condensed in the condenser
⑭
is stored in the distilled water tank
○
30
for about 10
minutes from the start of distillation. In this case, the initial accumulated water drain solenoid
valve
○
21
opens to discharge this water beforehand. When the float switch
○
29
at the top portion inside
the tank is activated, the tank is judged to be full and distillation stops. When the distilled water is
consumed to a certain level through its sampling, the unit generates the distilled water automatically.
Stored distilled water is sampled, via TOC reduction UV
○
26
, deaeration membrane module
○
23
, distilled
water quality electrode
○
22
, distilled water sampling solenoid valve
○
34
, distilled water flow sensor
○
36
,
distilled water sanpling port
○
38
, and membrane filter
○
39
, by the distilled water sampling pump
○
27
.