Some Fellowes laminators give a beep signal when they are ready to laminate or when the lamination is over. This audible alert is true only for particular models.
If your machine makes these signals, and they don’t mean the beginning or termination of the operation, consult the user manual. You may find the answer in its troubleshooting chapter. If it contains no information, consult Fellowes customer support. Don’t be nervous trying how to open the laminator and find a disorder and let a professional fix the machine.