Maintenance

In the European standards for the lighting, minimum values ​​for, for example, the illuminance are defined, which must not be undercut - these are also mentioned. As soon as a lighting system only has the maintenance value after a certain operating time, it must be waited. The maintenance value is abbreviated with the letter ēm.

The fact that the illuminance decreases after a while is due to the pollution and aging of the lights and lamps. However, so that the maintenance value is not reached so quickly, a higher new value or initial value must be installed, because frequent maintenance is not only complex, but also costs money. This new value is calculated using the maintenance factor. It is therefore important to reach the maintenance value of a lighting system after several years in order to keep the necessary maintenance as low as possible and to fulfill the lighting standards according to the type of space, visual task and activity and not only have the minimum value here.