Agricultural harvester comprising - a conveying device, - a processing device (17, 18.1, 18.2,...), - at least one processing device actuator (33.1, 33.r, 51.1, 51.r), and - a chamber arranged for containing loose crop material and surrounded by at least one side wall (55.1, 55.r), wherein the conveying device is arranged to convey loose crop material in a conveying direction through a feeding channel towards the chamber, wherein the processing device (17, 18.1, 18.2,...) is movable with respect to the conveying device between - a processing position, - a central remote position, and - at least one lateral remote position, wherein - the processing device (17, 18.1, 18.2,...) being in the processing position and - the conveying device are arranged to cooperate and to jointly process loose crop material which is conveyed through the feeding channel, wherein the processing device (17, 18.1, 18.2,...) being in the central remote position has a larger distance to the conveying device compared with the processing position, and wherein the or at least one processing device actuator (33.1, 33.r, 51.l, 51.r) is arranged to move the processing device (17, 18.1, 18.2,...) with respect to the conveying device - from the central remote position - in a lateral moving direction being perpendicular or angular to the conveying direction - into the or one lateral remote position, characterized in that the harvester further comprises - at least one cover (40.1, 40.r) being moveable between a covering position and an access-enabling position and - at least one cover position sensor (50.1, 50.r, 52.1, 52.r) assigned to the or one movable cover (40.1, 40.r), wherein the or every cover (40.1, 40.r) being in the respective covering position covers from outside at least partially the feeding channel and / or the or one side wall (55.1, 55.r) of the chamber, wherein the or every cover (40.1, 40.r) being in the access-enabling position enables an access from outside to the feeding channel and / or to the or one side wall (55.1, 55.r) of the chamber, wherein the or every cover position sensor (50.1, 50.r, 52.1, 52.r) is arranged to detect whether the or at least one assigned cover (40.1, 40.r) is - in the covering position or - in the access-enabling position, and wherein the harvester is arranged to inhibit the processing device actuator (33.1, 33.r, 51.l, 51.r) from moving the processing device (17, 18.1, 18.2,...) into the or one lateral remote position being adjacent to the or one cover (40.1, 40.r) if it is detected that this cover (40.1, 40.r) is in the covering position. - a conveying device, - a processing device (17, 18.1, 18.2,...), - at least one processing device actuator (33.1, 33.r, 51.1, 51.r), and - a chamber arranged for containing loose crop material and surrounded by at least one side wall (55.1, 55.r), - a processing position, - a central remote position, and - at least one lateral remote position, - the processing device (17, 18.1, 18.2,...) being in the processing position and - the conveying device - from the central remote position - in a lateral moving direction being perpendicular or angular to the conveying direction - into the or one lateral remote position, - at least one cover (40.1, 40.r) being moveable between a covering position and an access-enabling position and - at least one cover position sensor (50.1, 50.r, 52.1, 52.r) assigned to the or one movable cover (40.1, 40.r), - in the covering position or - in the access-enabling position, and