dallmeier DF5 Series, Commissioning Instruction Manual, Page: 18 / 44

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DF5(X)00HD-DN Commissioning
7 Maintenance
The device may only be opened by qualified personnel for inspection, mainte -
nance and repair.
Cleaning
If it is necessary to clean the device, observe the following notes:
NOTICE
Damage to the surface of the device
➡ Clean the housing with a soft, dry and antistatic cloth.
• Do not use detergents.
➡ If necessary, remove dust from the lens element with a suitable
bulb blower.
• Always beware not to touch the lens element in order to
avoid damages due to scratching or loss of image quality due
to fingerprints.
• Do not use canned air.
• Do not use organic solvents (alcohol, benzine) or cotton buds
for cleaning.