8 Operation
8.1 Safety
DANGER
H
azard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
b
Maintenance work, alignment work, fault diagnoses, and any changes to the inte‐
gration of the protective device in the machine must only be carried out by quali‐
fied personnel.
b
The effectiveness of the protective device must be checked following such work.
DANGER
H
azard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
1. Make sure that the optical properties of the protective housing of the sender and
receiver are not changed during operation, e.g., by:
°
Beading water, mist, frost, or ice formation on the protective housing. Remove
condensation of this kind or other types of contamination, then restart the
receiver.
°
Scratches or damage to the protective housing. Replace the protective hous‐
ing of the respective sender or receiver if its protective housing is scratched
or damaged.
2. Make sure that all reflective surfaces and objects maintain a minimum distance
from the protective field.
3. Make sure that no dispersive media (e.g., dust, fog, or smoke) are within the calcu‐
lated minimum distance from the protective field.
NOTE
This document does not provide information on operating the machine in which the
safety light curtain is integrated.
Further topics
•
"Minimum dis
tance to reflective surfaces", page 20
8.2 Regular thorough check
The test is intended to ensure that the hazardous area is monitored by the protective
de
vice and that unprotected access to the hazardous area is prevented.
b
C
arry out the checks according to the instructions from the manufacturer of the
machine and from the operating entity.
8 O
PERATION
52
O P E R A T I N G I N S T R U C T I O N S | deTec4 Core Ex 8017023/14Q6/2020-04-27 | SICK
Subject to change without notice
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