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Operating Instructions
Chapter
8
C 4000
Care and maintenance
8 009 221/16-11-00
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SICK AG • Safety Systems • Germany • All rights reserved
39
8
Care and maintenance
The safety light curtain C 4000 is maintenance-free. The front screen of the safety light
curtain C 4000 and any additional front screen(s) (see “Additional front screen (welding
spark guard)” on page 56) should be cleaned at regular intervals and when dirty.
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Do not use aggressive cleaning agents.
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Do not use abrasive cleaning agents.
Note
Static charges cause dust particles to stick to the front screen. You can alleviate this effect
by using the antistatic plastic cleaner (SICK Part No. 5 600 006) and the SICK lens cloth
(Part No. 4 003 353).
How to clean the front screen and/or the additional front screen (optional extra):
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Use a clean and soft brush to remove dust from the front screen.
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Then wipe the front screen with a clean and damp cloth.
Note
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After cleaning, check the position of sender and receiver to make sure that the protec-
tive device cannot be bypassed (reaching over, under or behind).
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Verify the effectiveness of the protective device as described in chapter 6.3 “Test notes”
on page 36.