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DF4820HD-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.
Содержание DF4820HD-DN
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