Air Conditioning System: Precaution

PRECAUTION FOR DISCONNECTING BATTERY CABLE

NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following system after the cable is reconnected.

SYSTEM REFERENCE

System Name	See Procedure
Variable Gear Ratio Steering System	INITIALIZATION
Meter / Gauge System	INITIALIZATION

DO NOT HANDLE REFRIGERANT IN AN ENCLOSED AREA OR NEAR AN OPEN FLAME
ALWAYS WEAR PROTECTIVE GLASSES

Fig 1: Precaution For Handle Refrigerant In Enclosed Area
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
AVOID SKIN OR EYE CONTACT WITH LIQUID REFRIGERANT
If liquid refrigerant comes in contact with your eyes or skin:
1. Rinse the area thoroughly with cold water.
  CAUTION: Do not rub your eyes or skin.
2. Apply clean petroleum jelly to the skin.
3. Go immediately to a hospital or see a physician for professional treatment.
  
  Fig 2: Precaution For Liquid Refrigerant On Eyes And Skin
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NEVER HEAT CONTAINER OR EXPOSE IT TO OPEN FLAME
DO NOT DROP OR STRIKE CONTAINER OF REFRIGERANT
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 the compressor may burn out. Care should be taken to avoid this.
DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE WHILE COMPRESSOR IS OPERATING
Open and close only the low pressure valve. If the high pressure valve is opened, refrigerant flows in the reverse direction and causes the charging cylinder to rupture.

Fig 3: Identifying Correct And Incorrect Pressure Value
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
BE CAREFUL NOT TO OVERCHARGE SYSTEM WITH REFRIGERANT
Overcharged refrigerant will cause problems such as insufficient cooling, poor fuel economy, engine overheating, etc.
DO NOT OPERATE ENGINE AND COMPRESSOR WITHOUT REFRIGERANT IN REFRIGERANT SYSTEM
NOTE: This may damage the inside of the compressor because the compressor parts move regardless of whether the A/C system is turned on or off.