P.19
10. MAINTENANCE
In order to ensure the accuracy of the NDIR CO2 Meter for a longer period
of time you should calibrate it once a year.
Clean the device and the window of the display with a clean, lint-free,
antistatic and dry cleaning cloth.
Do no use cleaning agents that contain carbon or
benzenes, alcohol or anything similar to clean the
product since these substances damage the surface of
the measuring instrument. Moreover, these fumes are
hazardous to health and explosive. Do not use tools
with sharp edges, screwdrivers, metal brushes or
anything similar to clean the device.