1. Do not work with refrigerant in a closed room or near an open flame.
2. Always wear safety glasses.
3. Avoid contact with skin, eyes or mouth.
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 pure petroleum jelly.
- c) Do not try to treat yourself, seek medical attention immediately.
4. Do not heat or burn refrigerant cylinders.
5. Do not drop cylinders or subject them to impact.
6. Do not operate the compressor without sufficient refrigerant. Insufficient refrigerant will result in insufficient lubrication of the compressor, which may result in compressor failure.
7. Do not open the high-pressure valve on the gauge block when the compressor is running. Opening the high-pressure valve will change the direction of the refrigerant flow, which will cause compressor failure.
8. Do not overcharge the system. Excess refrigerant leads to insufficient cooling, excessive fuel consumption, and engine overheating.
9. Use only R134a refrigerant.
Early models used R12 refrigerant in the air conditioning system. Currently, R134a refrigerant is used in the air conditioning system. 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.
10. Use only SP-10 compressor oil.
Caution: Mixing oils intended for different air conditioning systems will result in compressor failure.
11. Use O-rings and seals only for the type of refrigerant used.
Caution: R134a refrigerant destroys R12 refrigerant seals and the system will become depressurized.
12. 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.
b) When tightening the nuts, use two wrenches to prevent the pipe from twisting.
c) Tighten only to the specified torque.
13. Immediately install plugs on open ends of hoses and fittings to prevent moisture and dust from entering.
14. Bleed the refrigerant through the charging valve before installing the new compressor, otherwise the compressor oil will spray out along with the refrigerant when removing the plug.