I 1. Refrigerant line with internal heat exchanger. In this line, the liquid warm refrigerant (on the pressure side) gives off energy to the cold vaporous refrigerant (on the low pressure side), thereby increasing the efficiency of the climate control system; 2. Expansion valve. Removal and installation of the refrigerant line with internal heat exchanger; 3. Coolant pipes to the heating heat exchanger in the air conditioner; 4. Service connection in the low-pressure circuit for measuring and draining the refrigerant circuit. Cap with seal, tighten carefully. Various versions (with primary seal valve or nipple) depending on the refrigerant line. Depending on the location of the service nipple on the refrigerant line and the vehicle model, it may be necessary to remove the left additional brace reinforcement to connect the service connector of the service station; 5. Quick release coupling of refrigerant line on low pressure side; 6. Service connector in the high-pressure circuit for measuring, emptying and filling the refrigerant circuit. Carefully tighten the cap with seal. Various designs (with primary seal valve or nipple) depending on the refrigerant line; 7. Quick release coupling of refrigerant line on high pressure side; 8. Dryer tank. Remove only when the air conditioning circuit is empty, and deliver the car to a workshop that has the necessary equipment and trained qualified personnel. The tank is installed directly on the condenser (removing and installing the dehydrator tank). Depending on the design of the condenser, the receiver-dryer can be installed or built into the condenser; 9. Condenser. Remove only when the air conditioning circuit is drained, and deliver the car to a workshop that has the necessary equipment and trained, qualified personnel. Various designs (depending on the set car); 10. Coolant temperature and pressure sensor "G395". Housing color "gray". Coolant temperature and pressure sensor "G395" exchanges information via the "LIN-Bus" bus system with the used on-board network "J519"; 11. Air conditioning compressor. Remove the compressor from the mount and reinstall it (for cars with 4-cylinder engine) engine and 6-cyl. TDI engine; 12. Air conditioning compressor regulating valve "N₂80"
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