HygroMatik CompactLine C01, Руководство пользователя

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4. Functional description and device compo-
sition
4.1 Mode of Operation
Electrodes through which electrical current flows heat conduc-
tive water in a cylinder to create unpressurized, hygienic steam.
Electrode steam humidifiers are suitable for use with normal tap
water, as this is normally conductive.
The steam produced has a temperature of about 100°C/212°F
with minimal excess pressure ("pressureless steam"). It is
largely free of minerals and germ-free.
4.2 Structure and operation of the device
By pressing the control switch („Pos. I”) the humidifier is turned
on. When the controller specifies an increase in humidity, the
main contactor is switched on and the electrodes ((48) number
in paranthesis refers to exploded view fig.) are supplied with
power. The water inlet solenoid valve (25) feeds water into the
steam cylinder (16+19).
As soon as the electrodes are immersed, the current begins to
flow. The water is now heated. When the pre-selected output is
reached, the control turns off the solenoid valve and interrupts
the water supply.
After a short heating up period, the water between the elec-
trodes begins to boil and vaporize. The vaporization lowers the
water level in the steam cylinder, reducing the output provided.
The inlet solenoid valve, equipped with a fine mesh filter, inter-
mittently admits fresh water.
Humidifier power usage is continuously monitored. With a cold
start-up, the nominal current increases to 125% in order to
achieve quick-start output parameters.
The concentration of dissolved salts increases over time, which
can lead to a rise in the conductivity of the water. For this rea-
son, regular, periodic blow-downs of some of the concentrated
water are very important.
Water blow-down is performed by a blow-down pump (32).
With normal water quality, the blow-down loss rate is between
7% and 15% of the amount of steam produced. The steam cylin-
der requires complete drainage every 3-8 days, regardless of
the water quality.
During blow-downs, water flows from the pump into the drainage
system.
A sensor electrode (10) monitors the maximum water capacity
of the cylinder. When the water level reaches the sensor elec-
trode, the water supply is interrupted.