Vallox 132 E Series, Instructions For Use And Maintenance Manual, Page: 10 / 13

VALLOX 132 E/VKL
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MAINTENANCE INSTRUCTIONS
3.3. Filter guard
A filter guard is available for Vallox 132 E as an option. Its indicator normally lights up at
speeds 3 and 4 when the filters are clean, and this does not require any maintenance activities.
If the indicator does not light up at speed 4, the pressure in the ventilation ductwork of the
building differs from the factory setting. An expert may change the setpoint when needed.
If the filter guard indicator lights up at fan speed 1 or 2, the filters need cleaning. If they are
clean, the lighting up may be caused by a dense mosquito net which has been installed in
the external grille contrary to what is said in the installation instructions and has been clogged,
or by the closing of the supply air valves in the rooms.
3.4. Condensing water
During the heating season, humidity of extract air condenses into condensing water. Water
formation may be abundant in new buildings or if ventilation is low compared to the humidity
build-up caused by the residents. Condensing water needs to flow out from the ventilation
unit without hindrance. In connection with maintenance, e.g. in autumn before the beginning
of the heating season, make sure that the condensing water outlet (L) in the bottom tank is
not clogged. You may check it by pouring a little water in the tank. Clean if necessary.
Do not let water flow into electrical devices.
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