2006 Subaru Impreza HVAC systems (HEATING ELEMENT, FAN and air conditioning) Workshop Service manuals. In contrast to the old conventional CFC-12 system components are cooling system components for HFC-134a system as refrigerant and compressor oil incompatible. • Vehicles with HFC-134a system can be identified by the label (A) attached to the vehicle. Control before maintenance, which A/C system is installed in the vehicle. HFC-134a compressor oil has no compatibility with that CFC-12 system. • Use only manufacturer-established compressor oil for scheme HFC-134a; only use the DH per • do not mix multiple compressor oils. If the CFC-12 compressor oil is used in a HFC-134a a/c system, the compressor can become stuck due to poor lubrication or cooling product could leak due to increase of rubber parts. On the other hand, if the HFC-134a compressor oil is used in a CFC-12 A/C system, the durability of the system's a/c lowered. • HFC-134a compressor oil is very hygroscopic. When replacing or install/remove a/c parts immediately isolate the oil from the atmosphere by means of a plug or tape. In order to avoid moisture, you must save the oil in a container with its CAP tightly closed.CFC-12 refrigerant can be used in HFC-134a a/c system. HFC-134a refrigerants, also can not be used in CFC-12 A/C system. • If an incorrect or no coolant, poor lubrication would result and the compressor may be damaged. Coolant boiling at approximately - 30 ° C (-22 ° F). When handling this, be sure to wear safety goggles and protective gloves. Direct contact of the refrigerant with the skin may cause frostbite. If the refrigerant is in the eye, avoid rubbing your eyes with your hands. Wash your eye with plenty of water, and receive medical treatment from an eye doctor. • A service may Not be heated. If a service is directly heated or put in boiling water, internal pressure will be very high. This can cause may explode. If a service can be warmed up, you must use hot water in the Max. 40 ° C (104 ° F). • Drop or affect a service cannot. (Observe the precautions and operation procedure described on the refrigerant can). • When the engine is running, do not open the high-pressure valve intake manifold gauge. High-pressure gas will back-flow results in an explosion of May. • Give good ventilation and do not work in a closed area. • In order to prevent global warning, avoid releasing HFC-134a to the atmosphere. Use a coolant recovery system, discharge and reuse it.
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