AC–6 AIR CONDITIONING SYSTEM – GENERAL DESCRIPTION Manifold Gauge Valve Vacuum Quick-Connectors Pump Switch N04352 Wrong Okay LO HI LO HI N61084 CAUTION: • Be sure to connect both the high and low pressure quick–connectors onto the A/C system when evacuating. If only one side is connected, the system would be open to atmosphere through the other connector, making it impossible to maintain vacuum. • Be sure to turn off the manifold gauge valve immediately after evacuating the system. Then you may switch off the vacuum pump. PRECAUTIONS WHEN CHARGING REFRIGERANT 1. DO NOT OPERATE COMPRESSOR WITHOUT ENOUGH REFRIGERANT IN REFRIGERANT SYSTEM If there is not enough refrigerant in the refrigerant system, oil lubrication will be insufficient and compressor burnout may occur, so take care to avoid this. 2. DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE WHILST COMPRESSOR IS OPERATING If the high pressure valve is opened, refrigerant flows in the reverse direction and could cause the charging cylinder to rupture, so open and close the low pressure valve only. 3. BE CAREFUL NOT TO OVERCHARGE SYSTEM WITH REFRIGERANT If refrigerant is overcharged, it causes problems such as insufficient cooling, poor fuel economy, engine overheating etc. SUPPLEMENTAL RESTRAINT SYSTEM (SRS) Failure to carry out service operations in the correct sequence could cause the supplemental restraint system to deploy, possibly leading to a serious accident. During removal or installation of the parts and the yellow wire harness and connector for the airbag is necessary, refer to the precautionary notices in the RS section before carrying out operation.