Pict. 5: The refill hose has to be attached above the water level. If immersed, water could flow from the filter
tank into the reservoir or vice versa until both water levels are equal.
Pict. 6: Mounting of the sensors N1 and N2 by using the supplied holder.
1. Infrared sensor N1
2. Overflow protection sensor N2
3. Sensor holder lower part
4. Sensor holder upper part
5. Cable holder
6. Fixing screws for the holder
7. Fixing screws for the sensors
Available spare parts: Please refer to www.aqua-medic.de.
The refill unit switches itself off as soon as the water level reaches the top of the infrared sensor N1.
Attention! Fine air bubbles that are deposited at the tip of the N1 sensor lead to failures. Therefore,
place the sensor somewhere in the filter tank where no such bubbles are.
In case this sensor fails, the water rises up to the sensor N2 which then interrupts the refilling. The infrared
sensor has a delay function that suppresses a constant on and off with wave motions. If the refill reservoir is
empty, an audible alarm will sound.
8