The following figure shows the follow-up of a bearing in a biomass power plant where the bearing damage of an oven fan increases from week to week.
The broadband noise increases perceptibly every week.
The amplitude of 1 frequency also increases week after week.
Since the installation is only in service for a short time, it is suspected that an installation error has been made. In order to limit additional damage an intervention is needed or eventually an invocation to the guarantee scheme of the supplier of the equipment.