6 Maintenance
DANGER
Ris
k of ignition or explosion
►
Disconnect the voltage supply before any maintenance work is carried out to avoid
igniting hazardous atmospheres.
►
Only reconnect the voltage supply once you have completed the maintenance
work.
DANGER
Risk of ignition
Failure to observe this information could result in a risk of ignition.
►
If the device is used in an environment classified as tbIIIC, tcIIIB or tcIIIC, the
cover must not be removed, not even temporarily (e.g. for maintenance purposes).
DANGER
Ris
k of ignition or explosion
►
If you have to remove the cover when working on the safety light curtain, make
sure that the joints and o-ring are clean and undamaged before refitting the cover.
DANGER
Ris
k of ignition or explosion
►
Use fixing screws with a yield point of at least 640MPa to attach the cover to the
explosion-proof enclosure.
The safety light curtain is maintenance-free. Depending on the ambient conditions,
r
egular cleaning is required.
6.1 Regular cleaning
DANGER
Ris
k of ignition or explosion
Static discharge could cause explosions in hazardous atmospheres.
►
Always use anti-static cleaning agents to prevent static charge.
►
Do not clean the device using a dry cloth.
NOTICE
►
D
o not use any aggressive cleaning agents.
►
Do not use any abrasive cleaning agents.
►
Do not use any oil-based cleaning agents.
►
We recommend anti-static cleaning agents.
Clean the front screen.
1.
Use a clean, soft brush to remove dust from the front screen.
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. You will find information on how
to check the effectiveness in the underlying operating instructions.
6 M
AINTENANCE
24
O P E R A T I N G I N S T R U C T I O N S | C4000 Advanced Ex 8017027/1DVD/2023-04-28 | SICK
Subject to change without notice
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