Smeg DF410W

Our 4-year old Smeg DF410w Has tripped the MCB in the distribution box for the 2nd time.
The first time it occurred,was just about a week ago when it was switched on.
The plug fuse was checked as was the water inlet hose and both were ok.
Re-loaded the washer,pressed the on button and it worked fine and has worked until yesterday when it happened again.
Had a look at some of the troubleshooting posts on here,which seems the main problem is the suppressor.
Is this the case here or is it something else?
Where is it on my appliance and how do I access it? (with it unplugged of course)

Thanks in advance.