SAFARI

31 AIRCONDITIONING COMPRESSOR OIL Compressor oil is necessary for the lubrication of compressor bearings, themoving and sliding surfaces. The reason is the same as for the engine requiring lubricating oil. However, the compressor oil circulates through the entire refrigeration cycle, as such SPECIALLY RECOMMENDED oil must be used. Compressor Oil Quantity When the air conditioner is operated, some amount of oil is discharged together with the refrigerant from the compressor and circulates within the refrigeration cycle. If the amount of oil discharged by the compressors into the refrigeration cycle is very small, there will be hardly any adverse effect on the refrigeration cycle, and instead, there will be the benefit of improving valve lubrication. Conversely, if there is a large amount of oil circulating through the refrigeration cycle troubles may develop. Refer trouble shooting chapter. Caution Oil ND oil 6 is used in the air conditioning system which contains CFC 12. It doesn’t dissolve and circulate in new refrigerant HFC 134a. If used the life of the compressor is greatly reduced. Therefore, new ND-OIL 8 for 10 P(A) type compressor andND-OIL 9 forTV typemust be used for the HFC 134a cycle. To distinguish HFC 134a, a label is attached to the compressor as shown. 0 rings The O-rings of the piping connectors that are used in CFC 12 air conditioning systems and those that are used in HFC 134a system are not interchangeable. If O-rings for CFC 12 system are used by mistake in the connections of an HFC 134a system, the O-rings will foam and swell, resulting in leakage of refrigerant. Therefore, always use genuine O-rings for HFC 134a system. Label for Vehicles Equipped with HFC 134a Air Conditioning Systems R134a USE ONLY NDOIL 8 Fig. 42 Fig. 43