Stadler Form Roger Little Operating Instructions Manual page 8

means that it must be replaced every 8–12 months, depending on its expo-
sure to air and gases. Should you notice before eight months has passed that
bad odors are no longer being eliminated, this is an indication that the filter
needs to be changed.
Setting up / operation
1. Release the front cover (1) by pulling it forwards by the side indentations
near the top. The prefilter (2) can be removed by pressing down the two
latches at the top. Pull the Dual Filter
move the plastic film. Set the Dual Filter
textile tabs are visible on the front side. Arrows on the top of the filter (3)
indicate the direction in which the filter must be inserted. Refit the pre-
filter (2) by inserting the positioning aids near the bottom of the prefilter
(2) into the notches on the housing (4) and pressing on the latches until
they lock into the housing (4).Now hook the positioning aid at the lower
edge of the front cover (1) into the notches provided on the housing (4)
and tilt the front cover (1) in the direction of the housing until it is locked
at the top by the magnets on the housing (4).
2. Place Roger/Roger little to the desired location on a flat surface, ideally
centered in the room. This allows air to be supplied from all sides.
3. Connect the mains cable (5) to its connection (6) on the unit and then to
a suitable power outlet.
4. Turn on Roger/Roger little by pressing the on/off button (7). The controls
and the display light up in sequence from right to left. If no further but-
tons are pressed within 10 seconds, the display goes out again. Other-
wise, visibility is extended by a further 10 seconds. Pressing the on/off
button (7) or the controls lights them back up. To turn Roger/Roger little
off, press the on/off button (7) for two seconds.
5. Air quality is measured by means of various sensors (Roger = gas and
particle sensor PM2.5 / Roger little = gas sensor) and is indicated by the
air quality indicator (8) on the front cover (1).The blue LED means good
air quality. The orange LED shows medium air quality, and the red LED
shows poor air quality. If the device is switched on again, the display will
light up in orange for the first three minutes. The display then changes to
the air quality currently measured (blue, orange or red).
6. You can change the speed level by pressing the button for the selection
of the speed level (9) (one LED for level 1, two LEDs for level 2, etc.).
Increasing the speed level is useful when the air quality indicator (8)
indicates decreasing air quality (blue for good air quality, orange for me-
dium air quality and red for poor air quality). For optimal air purification,
we recommend activating auto mode (10).
7. Pressing the button for auto mode (10) automatically adjusts the speed
level to the current air quality (steps 1–4). If the air quality deteriorates,
the device automatically selects a higher speed level. The display shows
"Auto" when auto mode is activated.
8. By pressing the button for the timer (11) you can set the operating time
for between one and seven hours (for example, 3 h = 1 h and 2 h LEDs lit,
7 h = 1 h, 2 h and 4 h LEDs lit). The selected time is displayed above the
timer button with white LEDs. Press once to set the operating time to
1 h, press the button again for 2 h, and so on. The remaining time is indi-
cated by the illuminated LEDs above the timer button. The unit switches
(3) from its housing (4) and re-
TM
(3) in place so that the two
TM