1. Do not work with refrigerant in a closed room or near an open flame.
2. Always wear safety glasses.
3. Avoid contact with refrigerant in the eyes or on the skin.
In case of defeat:
- a) Do not rub the burnt area.
- b) Wash the burned area with plenty of cold water and lubricate the skin with Vaseline.
- c) Do not try to treat yourself, seek medical attention immediately.
4. Before removing or checking electrical components, turn the ignition switch to the "LOCK" position and disconnect the negative battery cable.
5. Do not heat or burn refrigerant cylinders.
6. Do not drop cylinders or subject them to impacts.
7. Do not operate the compressor without sufficient refrigerant. Insufficient refrigerant will result in insufficient lubrication of the compressor, which may result in compressor failure.
8. Do not open the high pressure valve on the gauge block while the compressor is running. Opening the high pressure valve will change the direction of the refrigerant flow, which will cause the cylinder to break.
9. Do not overcharge the system. Excess refrigerant leads to insufficient cooling, excessive fuel consumption and engine overheating.
10. Use only R134a refrigerant. The large differences in the properties of R12 and R134a refrigerants require different air conditioning systems for each type of refrigerant.
Never mix R12 and R134a refrigerants, even in small quantities, as this will cause serious damage to the air conditioning system.
11. Use compressor oil that is suitable for the refrigerant used.
Caution: Mixing oils intended for different air conditioning systems will result in compressor failure.
Toyota recommends ND-OIL 8 for systems using R134a refrigerant.
12. Use seals and rings only for the type of refrigerant used.
13. Be careful when tightening connections.
a) Apply a small amount of compressor oil to the rubber seals of the fittings to facilitate tightening and prevent refrigerant leaks.
[See the source on the internet resource: ToyotaMan.ru]
b) When tightening the nuts, use two wrenches to prevent the pipe from twisting.
c) Tighten only to the specified torque.
Location of air conditioning, heating and ventilation system components.
1 - air conditioning unit,
2 - high pressure tube,
3 - low pressure hose,
4 - retainer,
5 - compressor,
6 - drive belt,
7 - high pressure hose,
8 - capacitor.
14. Immediately install plugs on open ends of hoses and fittings to prevent ingress of moisture and dust.
15. Remove plugs immediately before connecting parts.