Oil Level Check
REFRIGERANT OIL LEVEL CHECKWhen an air conditioning system is first assembled, all components (except the compressor) are refrigerant oil free. After the system has been charged with R-134a refrigerant and operated, the oil in the compressor is dispersed through the lines and components. The evaporator, condenser, and filter-drier will retain a significant amount of oil, refer to the Refrigerant Oil Capacities chart. When a component is replaced, the specified amount of refrigerant oil must be added. When the compressor is replaced, the amount of oil that is retained in the rest of the system must be drained from the replacement compressor. When a line or component has ruptured and oil has escaped, the compressor should be removed and drained. The filter-drier must be replaced along with the ruptured part. The oil capacity of the system, minus the amount of oil still in the remaining components, can be measured and poured into the suction port of the compressor.
REFRIGERANT OIL CAPACITIES
Total System 200 ml (6.75 oz)
Filter-Drier 30 ml (1.0 oz)
Condenser 30 ml (1.O oz)
Evaporator 59 ml (2.0 oz)
All Refrigerant Lines 44 ml (1.5 oz)