General form: 1 - compressor, 2 - relay block No. 2: heater fan relay No. 1, radiator fan relay No. 2, air conditioner electromagnetic clutch relay, 3 - relay block No. 1: main heater relay, 4 - radiator, 5 - radiator fan, 6 - ambient temperature sensor, 7 - receiver, 8 - pressure switch, 9 - sunlight sensor, 10 - interior temperature sensor, 11 - air conditioning control panel, 12 - expansion valve, 13 - air intake damper actuator, 14 - damper actuator direction of flow, 15 - evaporator temperature sensor, 16 - heater fan speed control relay, 17 - evaporator, 18 - heater radiator, 16 - air mixing damper actuator, 20 - heater fan motor
Security measures
1. When working with refrigerant, always follow the safety rules
- A) Do not work with refrigerant indoors or near open flames.
- b) Always wear safety goggles.
- V) Be careful not to get refrigerant in your eyes or on your skin. On defeat:
- Do not rub the burned area.
- Rinse the burned area with plenty of cold water and lubricate the skin with clean petroleum jelly.
- Do not try to treat yourself, contact a medical facility immediately.
- G) Before removing or checking electrical components, turn the ignition switch to the "LOCK" and disconnect the negative cable from the battery.
Refrigerant Charging Precautions
1. Do not run the compressor without enough refrigerant. Lack of refrigerant leads to insufficient lubrication of the compressor, which can lead to compressor failure.
2. 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.
3. Do not overcharge the system. Excess coolant leads to insufficient cooling, excessive fuel consumption, engine overheating, etc.