Sorry, I added my edit (about contactor coil specs) to the earlier post before I saw your response.
I have just been to the workshop with the aim of making a measurement to put this discussion to bed. When I removed the cover to the electrical box I found the attached wiring diagram and, although it's very slightly different to the one in the manual, you can see that there is no transformer for the controls. Physical inspection shows that there isn't a traffo and that the contactors are the same type listed on the parts list - with 220V coils.
I didn't mean to be argumentative about this but just wanted to prevent someone from assuming that a phone cable would be safe, when it may not be. In this case it would have been rather unsafe.
BTW, I'd intended to fix the auxiliary controls on the side of the slider but I like the idea of hooking them on, as shown in your photo.
Dave (in the UK)
