10
Walter Meier (Climate International) Ltd. 8808 Pfäffikon
Type: PH28A
Serial: XXXXXXX
07.11
Voltage: 220...240VAC / 50...60 Hz
Power: max. 128 W
Water pressure: 0.5...6 bar
Color code: NCS S 0300-N
Made in Switzerland
Functional description
The fan (1) takes in the air from both sides via the coarse dust filter (2) or the Quattro filter, re
-
spectively. After passing the humidification drum, the purified air is led to the air outlet grill (5) and
distributed in the room.
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 humidification drum (3) starts turning. The vaporizer mat is dipped
into the base tub (4) and takes up water. The air passing through the humidification drum absorbs
the humidity.
The coarse dust filter retains dust particles up to 100 µm. If the Defensor PH28/PH28A 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
PH28) or by the level controlled inlet valve (Defensor PH28A).
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
(PH28A only)
Field with certification symbols
Power consumption
5
1
4
3
2
Colour code
