The swash-plate compressors used by Ford are particularly susceptible to this problem.
Some wear is normal.
During normal operation, a small amount of wear occurs inside the compressor due to the contact of moving metal parts. Loose particles contaminate system. They lodge in various system components and frequently impede or even block the flow of the refrigerant-lubricant. If only a new compressor is installed into a system that has not been thoroughly flushed, there is a good possibility that the new compressor will fail again, thereby voiding the warranty and resulting in another expensive repair. Recognizing the problem.