A technical facility has a computer with service software stored therein that has first, second and third service modules. The first service module has a first service routine or a first group of service routines that is available to an operator of the technical facility without a training for application of the first service routine or the first group of service routines. The second service module has a second service routine or a second group of service routines that is available to the operator only after a training. The third service module has a third service routine or a third group of service routines that is denied to the operator.