The condenser coils on this refrig accumulate dust, lint, pet hair, fuzz, you name it. An internet search scores the tool that you need. Work this specialized bottlebrush in-and-out and between the coils — being careful not to insert the tool head clear back into the fan blades which may be running. Doh!

Note the vacuum cleaner hose extension pictured to the left side of the image: This will help to pick up the flying dust and debris that exit the airflow output side of the refer. The running fan may fill your kitchen with particulate but the vacuum will trap most. Your appliance will operate shorter cycles and save energy.