13Product Overview
Steam generation
Any time steam is requested, the electrodes are supplied with voltage via main contactor. Simultaneously,
the inlet valve opens and water enters the steam cylinder from the bottom via water cup and supply line.
As soon as the electrodes come in contact with the water, current begins to ow between the electrodes,
eventually heating and evaporating the water. The more the electrode surface is exposed to water, the
higher is the current consumption and thus the steam capacity.
Upon reaching the requested steam capacity, the inlet valve closes. If the steam generation decreases
below a certain percentage of the required capacity, due to lowering of the water level (e.g. because of
the evaporation process or drainage), the inlet valve opens until the required capacity is available again.
If the required steam capacity is lower than the actual output, the inlet valve is closed until the desired
capacity is achieved by lowering of the water level (evaporation process).
Level monitoring
A sensor provided in the steam cylinder cover detects when the water level gets too high. The moment
the sensor comes in contact with water, the inlet valve closes.
Drainage
As a result of the evaporation process, the conductivity of the water increases due to an escalating
mineral concentration. Eventually, an inadmissibly high current consumption would take place if this
concentration process were permitted to continue. To prevent this concentration from reaching a value,
unsuitably high for the operation, a certain amount of water is perio dically drained from the cylinder and
replaced by fresh water.
Control
The steam production can be controlled with an external 0-10V continuous controller or an external
humidistat (24 VDC On/Off control).
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