That on the door is the on/off switch for the voltage/frequency set, there is a start and stop button on the door to. I will try and get a pic of that later. It is a mechanical one. It is still in use today, with no plan to upgrade it - "if it works, it must be ok" thats our motto. I work in IT so dont get directly involved with that side of maintenance.

I took my time, I hurried up, The choice was mine, I didn't think enough