NEXON

HVAC 28 STEP INSPECTION ACTION 11 Inspect evaporator piping connec- tions in cooling unit for gas leakage are piping connections for evapora- tor in cooling unit free of gas leakage? Yes If the vane makes a noise, add 10ml of compres- sor oil to the A/C compressor. Verify that the noise is no longer heard. Adjust refrigerant to specified amounts. No If piping is damaged or cracked, replace it. If there is no damage, go to next step. 12 Inspect evaporator piping connec- tions in cooling unit for looseness Yes Tighten connections to specified torque. If the vane makes a noise, add 10 ml of compres- sor oil to the A/C compressor. Verify that the noise is no longer heard. Adjust refrigerant to specified amounts. No If the vane makes a noise, add 10 ml of compres- sor oil to the A/C compressor. Verify that the noise is no longer heard. Replace O-ring on piping, adjust refrigerant to specified amounts. 13 Inspect piping connections for looseness are piping connections loose? Yes Tighten connections to specified torque. If the vane makes a noise, add 10ml of compressor oil to the A/C compressor. Verify that the noise is no longer heard. Adjust refrigerant to specified amounts. No If the vane makes a noise, add 10ml of compres- sor oil to the A/C compressor. Verify that the noise is no longer heard. Adjust refrigerant to specified amounts. 14 Verify whether malfunction is in expansion valve, air mix and com- pressor oil or elsewhere does refrigerant’s high-pressure value hardly increases? Yes Go to next step. (Pressure hardly increases.) No Go to step 17. 15 Verify whether a malfunction is in compressor oil amount and a/c compressor or elsewhere when engine is racing, does high- pressure value increase? Yes Return to step 3. No Go to next step