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 calcu‐
lated minimum distance from the protective field.
DANGER
H
azard due to unexpected starting of the machine
b
Make sure that the dangerous state of the machine is and remains switched off
during the cleaning.
b
Make sure that the outputs of the safety light curtain do not affect the machine
during the cleaning process.
NOTICE
b
Do not use any aggressive cleaning agents.
b
Do not use any abrasive cleaning agents.
b
Do not use any oil-based cleaning agents.
b
We recommend anti-static cleaning agents.
Approach
1.
Remove dust from the front screen using a soft, clean brush.
2. Then wipe the front screen with a clean, damp cloth.
3. Check the position of the sender and receiver after cleaning.
4. Check the effectiveness of the protective device.
MAINTENANCE 10
8022883/2019-03-07 | SICK O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex
77
Subject to change without notice
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