How can I get a 60 Hz refrigerator to work on a 50 Hz system?
You face many challenges with this refrigerator.


It is a discontinued model.
It is made for North American electricity.
It is made for North American kitchen space.  It will probably be too big for 95% of European kitchens: width, depth, and height.
Many European kitchen floors will not be able to hold its empty weight of 324 pounds/147 kg, let alone loading it full of stuff.  Its weight loading is 36 pounds per square foot (empty) which should be okay in most buildings (less than an adult standing on the floor).
It will be very expensive to ship.  Probably at least half the price of a new fridge.
A sufficiently hefty non-switched UPS (uninterruptible power supply) intended for North American power can do the frequency and voltage conversion, but it won't be just any off-the-shelf UPS.  Maybe one like this for around $900 will do.  Some models allow input range from like 90 V to 250 V.  Most heftier, non-switch-through do the proper frequency conversion.  I looked for awhile but didn't see any less than $750.