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4. Functional Description and
Device Composition
4.1 Mode of Action
The immersion heater principle
Depending on the output rating, one, three or
six heater elements are arranged within a
closed cylinder. Examplary given, the figure
below shows the heater elements and other
main components of a heater element steam
generator of the FLP series with 6 heater ele-
ments.
The cylinder(s) are filled with either tap water
of varying quality, fully desalinated water or
partially softened water.
The heat introduced by the heater elements
heats up the cylinderwater to approx. 100 °C
(212 °F), transforming the water into steam
with a temperature of approx. 100 °C (212 °F)
This steam is virtually mineral-free and germ-
free.
When fully desalinated water is used, the cy-
linder water is almost totally clear of minerals.
This situation guarantees a long lifetime of the
cylinder(s) and the heater element(s), since
virtually no hardeners will fall-out and no min-
eral deposits will occur. Such, the number of
inspections and/or maintenance operations
required will be reduced to a minimum.
When tap water is used for operation, some of
the minerals dissolved in the water are likely to
settle in the cylinder in form of solids of various
compositions. However, most of the solids are
flushed out by cyclic blow-down with the help
of a heavy-duty blow-down pump.
Control switch
Display
Main contactor
Blow-down
pump
Cable bushings
Waste water
outlet
Mainboard
(control)
Connector for heater
element wiring
Solid state relay
on heatsink
Water inlet
Solenoid valve
Cylinder base
Heater elements
Steam cylinder
Steam hose
adapter
Steam exit
Thermo switch
Level control
