Julie and I - since 2011 - have used Indel B TB51A chest style fridges in our two campers. Every couple of years I pull the fridge out and do a thorough clean up around the compressor and condenser coils. Although we keep our camper quite clean and we have little to no dust intrusion, the condenser fan brings everything into the fridge. I apologize that I did not take any "after" photos, but here are 4 "before" photos to illustrate what you may find in yours. The dust was sticky. Vacuum and air pressure did little. A soft brush and care cleaned up the area well.