Could you provide a little more info. What exactly do you mean they are breaking? Is it just the MT compressors or the LT or both. You picked up this account today is this according to the customer or service records? How old is the equipment-you said it replaced some one on ones. When was this? What about the evaps? Is everything new? Did you graph the compressor superheat? Does it dip way down after defrosts? Are there electical issues? What does "breaking" mean?
Knowledge is knowing that a tomato is a fruit. Wisdom is knowing not to put it in a fruit salad.