9 Maintenance
9.1 Regular cleaning
Overview
D
epending on the ambient conditions of the safety light curtain, the front screens must
be cleaned regularly and in the event of contamination. Static charges can cause dust
particles to be attracted to the front screen.
The deflector mirrors also must be cleaned regularly and in the event of contamination.
Important information
DANGER
Ris
k of ignition or explosion
Static discharge could cause explosions in hazardous atmospheres.
b
Always use anti-static cleaning agents to prevent static charge.
b
Do not clean the device using a dry cloth.
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
Regularly check the degree of contamination on all components based on the
application conditions.
b
Observe the information concerning test rod testing.
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
Make sure that the optical properties of the front screens of the sender and
receiver are not changed, e.g., by:
°
beading water, mist, frost, or ice formation. If applicable, remove films or
other types of contamination, disconnect the voltage supply of the receiver
and then switch it back on.
°
Scratches or damage. Replace the device whose front screen is scratched or
damaged.
b
Make sure that all reflective surfaces and objects maintain a minimum distance
from the protective field.
b
Make sure that no dispersive media (e.g., dust, fog, or smoke) are within the
calculated minimum distance from the protective field.
NOTICE
b
D
o not use any aggressive cleaning agents.
b
Do not use any abrasive cleaning agents.
b
We recommend anti-static cleaning agents.
b
We recommend the use of anti-static plastic cleaner (SICK part number 5600006)
and the SICK lens cloth (SICK part number 4003353).
9 MAINTENANCE
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 II 3GD 8021796/1DCM/2022-10-27 | SICK
Subject to change without notice
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