Training your employees how to use the equipment is important, but that should not be the only form of training provided. Teaching the controls and their functions is important, however, it is not all there is to be safe and effective training. That short process can be described as equipment familiarization. Formal training assesses the operator's comprehension of the information they were taught.
The training should be delivered by a qualified trainer, schooled in “Adult Learning Principles.” It definitely is a plus if the trainer has experience with the machines that the training is being taught. In order to complete the training the person being trained should pass a written examination to determine that the training objectives have been met. A practical operating evaluation should be administered to determine if the student can, in fact, operate the machine in a safe manner.