Выражение встречается в следующем контексте: MACHINE OPERATOR - this is an unqualified operator, without specific skills, able to carry out simple tasks, i.e. to handle the machine using the controls displayed on the push button panel, to load and unload the materials used during production with the safety devices fitted and activated. (He is not qualified to use the feed controls of the machine in manual mode with the guards open)
последнее предложение особенно проблематично. помогите, пожалуйста справиться.
Заранее спасибо