The accommodations air conditioning system has been short cycling and it was evident that it was short of refrigerant. We removed all refrigerant from both systems and fully pressure tested each circuit. At the same time we completed a full service by replacing the compressor oil, filter drier cores and suction strainers. The oil in one compressor was found to be very contaminated so a major cleanup procedure was was carried out. Upon repairing all leaks on the system we set about fully commissioning each circuit including setting up the main controller, testing the unloader operation and setting up the thermal expansion valves to give the best efficiency for the evaporator coils.