Im sure some electrical people will be along shortly to give you some advice, Im not one of them.
But, my advice (being a tinkerer who knows I dont know enough about 240v) is you NEED to unplug that machine and not turn it back on until you have the problem sorted. Dont go experimenting with touching it again. 240v kills and does so more often than people lead themselves to believe. You may not have got a 240v zap but the next time you touch it you might. Something is seriously wrong and electricity is finding a path to your casing. Until you are sure it is no longer doing it, you really need to unplug it and dont touch it plugged in again.
When I say something is seriously wrong - it doesnt mean an expensive or difficult fix - it may be very easy and cheap. What I mean is electricity should not be there and if you keep playing whilst it is - this is serious.
Hopefully some electrical people will be along shortly. Play safe.