9
Maintenance
9.1
Safety
DANGER
Hazard 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
Do not do repair work on device components.
b
Do not make changes to or manipulate device components.
b
Apart from the procedures described in this document, the device components
must not be opened.
9.2
Regular cleaning
Overview
Depending on the ambient conditions of the multiple light beam safety device, the pro‐
tective housing must be cleaned regularly and in the event of contamination. Static
charges can cause dust particles to be attracted to the protective housing.
The deflector mirrors also must be cleaned regularly and in the event of contamination.
Important information
DANGER
Hazard 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
Regularly check the degree of contamination on all components based on the
application conditions.
b
Observe the information on the regular rod test check.
DANGER
Hazard 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 light beams.
3.
Make sure that no dispersive media (e.g., dust, fog, or smoke) are within the calcu‐
lated minimum distance from the light beams.
MAINTENANCE
9
8021554/14Q7/2020-04-27 | SICK
O P E R A T I N G I N S T R U C T I O N S | deTem2 Core IP69K
43
Subject to change without notice