Sequential circuits samplers

Hi Wizards

My P2K keeps blowing the fuses. 

When I install a new 240V and 0,25A fuse (Europe specifications 
according to the manual)I can turn the P2K on and off 4 or 5 times 
during several days and let her be on for many hours, but eventually 
the fuse will die. The last fuse lasted approx. a month.

Will anyone be able to tell me what might be wrong here?

Best regards

Brian