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Functional description
The radial fan (1) takes in the air from the top via the coarse filter (2). After passing through the
evaporator mat (3) (or the activated carbon evaporator mat) and the coarse dust filter (4) (or the
Quattro filter) the air is blown out via the outlet lattice on both sides of the unit.
The unit continuously measures the air humidity in the room with the integrated humidity sensor
and compares it with the set reference humidity value. If the actual value (e.g. 40 %rh) is below the
reference value (e.g. 45 %rh) the centrifuge (5) starts and projects fine drops towards the evaporator
mat. The air passing through the evaporator mat absorbs the humidity.
The coarse dust filter retains dust particles up to 100 µm. If the Defensor PH15/PH15A is equipped
with a Quattro filter it can retain dust particles up to 0.1 µm. In addition the activated charcoal layer
in the Quattro filter removes unpleasant odour.
The water level in the base tub is monitored by the level regulating valve in the water tank (Defensor
PH15) or by the level controlled inlet valve (Defensor PH15A).
3.5 Functional description/Operating modes
3.4 Identification of the unit
The identification of the unit is found on the type plate (for the location of the type plate see unit
overview):
Type designation Serial number Month/Year
Unit voltage
Admissible water supply pressure
(PH15A only)
Power consumption
Walter Meier (Climate International) Ltd. 8808 Pfäffikon
PH15
XXXXXXX
AC 220...240V / 50...60 Hz
max. 72 W
Made in Switzerland
02.07
Inlet pressure = 0.5...6 bar
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