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HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–77 Compressor Oil Oil Specification • The HFC-134a system requires a synthetic (PAG) compressor oil whereas the R-12 system requires a • Compressor (PAG) oil varies according to compressor model. Be sure to use oil specified for • Always use HFC-134a Vane Rotary Type Compressor Oil (AIPDN Part No.2-90188-301-0) Handling of Oil • The oil should be free from moisture, dust, metal powder, etc. • Do not mix with other oil. • The water content in the oil increases when exposed to the air. After use, seal oil from air immediately. • The compressor oil must be stored in steel containers, not in plastic containers. Compressor Oil Check The oil used to lubricate the compressor is circulating Oil Capacity Capacity total in system: 150cc (5.0 fl.oz) Compressor (Service parts) charging amount: 150 cc (5.0 fl.oz) Checking and Adjusting Oil Quantity 1. Perform oil return operation. Refer to Oil Return Operation in this section. 2. Discharge and recover refrigerant and remove the compressor. 3. Drain the compressor oil and measure the extracted oil with a measuring cylinder. 871RX020 4. If the amount of oil drained is much less than 90 cc (3.0 fl. oz.), some refrigerant may have leaked out. 5. Check the compressor oil contamination. (Refer to Contamination of Compressor Oil in this section.) 6. Adjust the oil level following the next procedure below. 7. Install the compressor, then evacuate, charge and perform the oil return operation. 8. Check system operation. When it is impossible to preform oil return 1. Discharge and recover refrigerant and remove the compressor. 2. Drain the compressor oil and measure the extracted oil with a measuring cylinder. 3. Check the oil for contamination. 4. If more than 90 cc (3.0 fl. oz.) of oil is extracted from the compressor, supply the same amount of oil to 5. If the amount of oil extracted is less than 90 cc (3.0 fl. oz.), recheck the compressor oil in the following 6. Supply 90 cc (3.0 fl. oz.) of oil to the compressor and install it onto the vehicle. (Charging Amount) (Collected Amount) more than 90cc (3.0 fl.oz) same as collected less than 90 cc (3.0 fl.oz) 90cc (3.0 fl.oz) |