A packaging machine comprises a chamber (4) having a cover (5), wherein the cover (5) which is liftable from a lowered position in which a chamber (4) is closed into a lifted position, in which a chamber (4) is opened. It is the object of the device or the method to improve the ergonomic accessibility and the visibility of the cover inside of a vacuum chamber of a packaging machine during maintenance, repair or cleaning work. For this purpose, the cover (5) is pivotable in the lifted position.