Press + (plus) to increase the airflow (the blue led indicators will guide you to what
airflow you have chosen)
• Press – (minus) to lower the airflow
• A red warning light will be lit at the filter change symbol, when it’s time for filter
replacement.
• When the red warning light have been lit and filter are replaced you need to calibrate
the unit by pressing + and- at the same time during 5 seconds. Now you are secured that
the warning light will be lit again when it’s time for filter replacement.
• On the back side of the unit is the electrical connector with fuse holder and machine plate.