Check the technical safety of the device regularly for damage to the mains cord or the casing, as well as for wearout of wear parts such as rotary
knobs and sliding faders.
If it is to be assumed that a safe operation is no longer feasible, then the device must be disconnected and secured against accidental use. Always
disconnect the mains plug from the outlet!
It must be assumed that a safe operation is no longer feasible, if the device bears visible defects, if the device no longer functions, following longer
storage under unfavourable conditions or after major transport stress.