SICK WEU26-3 User Manual

Chapter 7 Operating Instructions
WSU/WEU263
30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8013338/YTA4/2016-03-24
Subject to change without notice
Care and maintenance
7 Care and maintenance
T
he WSU/WEU26@3 devices are maintenance-free. The integrated relay contacts are
subject to normal wear. The front screen of the sensors should be regularly cleaned and
also if contaminated.
Avoid scratches and misting of the front screens as well as the formation droplets, frost
a
nd ice on the front screens, as the optical properties may change.
 Do not use aggressive cleaning agents.
 Do not use abrasive cleaning agents.
Static charges cause dust particles to be attracted to the front screen. You can reduce this
effect by using the antistatic plastic cleaner (SICK part number 5600006) and the SICK
lens cloth (part number 4003353).
How to clean the front screen:
 Use a clean and soft brush to remove dust from the front screen.
 Now wipe the front screen with a clean and damp cloth.
After cleaning, check the position of sender and receiver to ensure that the protective
device cannot be bypassed (climbing over, crawling beneath or standing behind).
 Verify the effectiveness of the protective device as described in chapter 6.2 “Test notes”.
Note
Note
Note

SICK WEU26-3 Specifications

General

Brand	SICK
Model	WEU26-3
Category	Security Sensors
Language	English