The system must be based on the analysis of the behavior of the typical parameters that characterize the operation of the sample under test, including diagnostic signals. The tests of the electric fans are performed in the company laboratories in automatic mode 24/7 thanks to an automatic recording system. The main focus of the activity will be to prepare reports on request on the progress of the test in the intermediate phases; the system must indicate to the laboratory technician which verification activities on the samples or on the set up are necessary to avoid irreversible drifts in the behavior of the samples themselves under test.