5 Maintenance 11.90
5.4 CRT display
5.4 CRT display
The picture on the CRT display can oscillate when the monitor is exposed to electromagnetic
fields. Devices which generate electro-magnetic fields, such as transformers, fans, electro-
magnetic switches, a.c. cables under power, etc. must be more than 300 mm away from the
CRT display unit.
5.5 Cleaning
The front of the monitor, and the surface of the operating panel can be cleaned. For dirt that is
relatively easy to remove, standard household washing-up liquid, or the industrial cleaner
”Special Swipe” can be used. These cleaners will also remove dirt containing graphite.
Cleaning agents which contain one or more of the following ingredients can be used for short
periods of time:
– diluted mineral acids
– bases
– alcohol
– organic hydrocarbons
– detergent solutions
– greases and oils.
5-4
© Siemens AG 1990 All Rights Reserved 6ZB5 410-0EQ02
SINUMERIK 810M, GA3 (BN)
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