User Manual
34 
VII  Cleaning the Unit 
Choose either of the two options below depending on the cleaning tool you 
have. 
If you have other pump-like cleaning tools available (e.g. for computers), 
you may also utilize them. Please be careful to not exert extremes of 
force or temperature / humidity onto the sensors to prevent damaging 
them. 
It is recommended to clean the sensors every 3-6 months for maximum 
sensor functionality. 
VII-1  Air Pump Cleaner 
A general air pump cleaner of maximum diameter 55mm and length 
150mm will be sufficient. 
1.  Direct the nozzle of the air pump cleaner at an opening (Figure 1 or 
Figure 2) of a sensor. 
2.  Squeeze the bulb to blow air at the sensors. 
3.  Do this for 5-10 times and make sure all sensor openings are cleaned. 
Figure 1 
Figure 2 










