
3. Microprocessor control unit description, LED and RESET
Air purifier is equipped with a
microprocessor control unit, which
manages correct operation of the
whole device, air circulation and
calculates runtime of the discharge
lamps. On the side, there are OK and
SERVICE LED indicators, RESET
button and the main switch. After
turning on the main switch, fans will
start running and the green OK LED
indicator will light up. This means that
the device is working correctly. Red
SERVICE LED indicator will start
flashing 500 hours before the
discharge lamp lifetime ends. After
the lifetime ends, the red LED will be
on permanently.
4. Replacing UV discharge lamp
You need to replace UV discharge lamps after their lifetime has
ended. Even though they seem to light with the same, standard
color, the intensity of the ultraviolet UV C element is significantly
lower.
It is possible to open the device only when it is disconnected from
the power source. Unscrew the top cover and remove it. Eject the
discharge lamp from its base and remove it from the holder. Install
new discharge lamps in the reverse order mentioned before. We
recommend original OSRAM tubes of type HNS – see specification
in the technical specifications section. When closing the device,
ensure that the cover fits the device’s body and there is no gap
that could cause UV radiation leakage. Counter must be reset
after the replacement. Turn on the main switch and hold the reset
button pressed for at least 5 seconds using a thin object. The red
SERVICE LED will switch off. Malfunctioning or broken tubes must
be disposed as electronic waste.