Kendrion Kuhnke Automation GmbH
Construction and Functionality
Kuhnke Vico
47
10.5 Durability Information
10.5.1 UV resistance of front film
The unit was designed for indoor application.
Provided that it is not exposed to direct UV radiation and kept at 25 °C, it is expected to last for 10 years.
Some yellownes and cloudiness appeared after 300 hours in the QUV® "Accelerated Weathering Tester".
10.5.2 Chemical resistance
The uninterrupted layer of front polyester film is highly resistant to abrasion and provides excellent chemical
resistance to cleaning agents and solvents.
Solvent resistance
After 1/2 hour of contact at 21 °C, not visibly affected by:
acetone, butylcellosolve, cyclohexanone, ethyl acetate, hexane, isopropanol, MEK, methylene chloride,
toluene, xylene
After 24 hours of contact at 49 °C, not visibly affected by :
coffee, ketchup, lemon juice, mustard (minor yellow stain), tea, tomato juice.
10.5.3 Life of LED backlighting
20,000 hours or longer
(continuous duty, 50% of nominal backlight brightness at an ambient air temperature of 25 °C)
Operation at ambient temperatures of 40 °C or higher may affect the quality or life of the LED backlighting.
