Coating installation with means for testing and service routines and method for performing testing and service routines in coating systems

A method of performing a test routine for at least one component of a vacuum coating apparatus (1) in which, during a rest period of at least a part of fabrication process, a maintenance routine or a check of a component involved in this part of manufacturing process (7, 10, 20, 30) automatically and independently made and with a deviation of at least one test parameter determined from a target area or a detected malfunction of the component (7, 10, 20, 30) a warning message (310, 610) is generated, wherein at least comparing a while checking recorded measured value with stored data and a warning message (310, 610) is generated when the Closed based on a detected from the stored measurement values ​​and the at least one measured in the current check the measured value trends for a future malfunction or a future deviation of the sensed parameter from a predetermined desired range can be s and wherein an automatic cross-checking of several components (20A, 20B) is performed.