Compressor for HACCP
Adding compersor to the hazard analysis is a correct decision as long the air has a direct contact with your product.
I think you have to consider the chemical and biological hazards also beside the physical hazards,
chemical hazard could be the mieral oil used and biological could be the vegitative pathogens or maybe mold.
Control measures here could be your filter mesh size and also air plates to check the mold presence,
Changing filters is a control to ensure that filters are fit and not passing any mositure or oil with the air, your refernece could be the manufacturer's guidelines.