Old Bosch Dishwasher Question

[stokebishop]

I'm trying to remove an old Bosch Dishwasher (SMS 20/30, SMU 20, SMI 20) from the early 90s.

It has a single pipe coming from it, in which are contained water and drainage pipes. The water pipe and drainage pipe split off in a box which has electricity marked on it (220V with a electric shock sign). What the heck is this, and how do I get it off??? That's my question!
I need to disconnet the tap.

Many thanks for any help.
SB

 

[assuhors]

The grey box contains the electrical inlet valve,as long as the machine is unplugged it will not be live.

 

[stokebishop]

The grey box contains the electrical inlet valve,as long as the machine is unplugged it will not be live.

Ok, thanks for that.
It won't easily come apart. I've taken the two screws out.
Should I just use a bit of force!?

 

[assuhors]

No need to open the box up,turn off the water supply to it and unscrew it from the tap.