Commercial Refrigerators Maintenance Recommendations ?

Question

Can anyone provide me with a list of items to check. These are drive thru size cold storage units. Ive been told to not check the system pressure every month because of the service valves can might leak after so many uses, and some refrigerant is wasted each time........ so........to check the temp differential across both coils.....then check the superheat (I dont know how to do that) check the amp draw on the fans. check the coils for dirt...........what else ?....... I sure would do well here to catch a problem before it get serious........

Answer 1

keep the door closed when it's hot out