HygroMatik HeaterCompact HC02, Manual

Page: 13 / 78

Page 13
4.2 Installation and Method of Operation
By pressing the control switch („Pos. I”) the humidifier is turned
on. When the hygrostat or controller signals a demand for
humidification, the inlet solenoid valve (14) opens. The solenoid
valve is designed for pressures from 100 x 10
3
to 100 x 10
4
Pas-
cals (1 to 10 bar).
Water is fed into the cylinder.
The water level in the cylinder must be maintained within a spec-
ified range. If the water level is too high, the ellbow acts as a
safety overflow for water drainage. If the water level is too low, it
could cause the heater element (8) to overheat. Therefore,
power supply to the heater element is shut off when water levels
are too low.
The cylinder water level is controlled by a level control (27). The
level control consists of a stainless steel cylinder with two float
switches and three reed contacts. The float switches indicate the
water level in the steam cylinder: "Dry Run", "Humidification"
and "Max. Level". The control capsule is pressure-equalized.
At the standard setting, the inlet solenoid valve (14) opens when
the water level remains below “humidification” level for 10 sec-
onds. The water level then rises again to “humidification” level.
The steam cylinder consists of a top (16) and lower (9) part
joined with a cylinder flange. The seal between the cylinder and
cylinder base (11), as well as between the top and lower part of
the cylinder, is maintained using an o-ring.