1. Do not work with refrigerant in an enclosed space or near an open flame.
2. Always wear safety glasses.
3. Be careful not to get refrigerant in your eyes or on your skin.
On defeat:
- A) Do not rub the burned area.
- b) Rinse the burnt area with plenty of cold water and lubricate the skin with petroleum jelly.
- V) Do not try to treat yourself, contact a medical facility immediately.
4. Before removing or checking electrical parts, turn the ignition switch to the "LOCK" and disconnect the negative cable from the battery.
5. Do not heat or incinerate refrigerant cylinders.
6. Do not drop cylinders or subject them to shock.
7. Do not run the compressor without enough refrigerant. Lack of refrigerant leads to insufficient lubrication of the compressor, which can lead to compressor failure.
8. Do not open the high pressure valve on the gauge block while the compressor is running. If the high pressure valve is open, the direction of refrigerant flow will change, resulting in cylinder failure.
9. Do not overcharge the system. Excess coolant 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 lead to serious malfunctions of the air conditioning system.
11. Use compressor oil suitable for the refrigerant used.
Attention: mixing oils intended for different air conditioning systems leads to compressor failure.
Toyota recommends ND-OIL 8 for systems using R134a refrigerant.
12. Use o-rings and seals designed for the type of refrigerant used only.
13. Be careful when tightening connections.
A) Apply some compressor oil to the rubber fitting seals to facilitate tightening and prevent refrigerant leaks.
b) When tightening the nuts, use two wrenches to prevent twisting of the pipeline.
V) Tighten only to the specified torque.
The location of the components of the air conditioning, heating and ventilation system.
1 - air conditioner unit,
2 - high pressure tube,
3 - low pressure hose,
4 - latch,
5 - compressor,
6 - drive belt,
7 - high pressure hose,
8 - capacitor.
14. Plug open hose ends and fittings immediately to prevent moisture and dust from entering.
15. Remove plugs just before connecting parts.