Inspection Procedure

NOISE

Inspection procedure


1. CHECK OPERATION

1.Operate the air conditioning system and check the operation. Description & Inspection.
2.Check the parts where noise is occurring.
Can the parts where noise is occurring be checked?
YES-1- Noise from blower motor: GO TO 2.
YES-2- Noise from compressor: GO TO 3.
YES-3- Noise from expansion valve: GO TO 4.
YES-4- Noise from A/C piping (pipe, flexible hose): GO TO 6.
YES-5- Noise from drive belt: GO TO 7.
NO- INSPECTION END

2. CHECK THE BLOWER MOTOR

1.Remove the blower motor.
2.Remove in-cabin microfilter.
3.Remove foreign materials that are in the blower unit.
4.Check the noise from the blower motor again.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace the blower motor.

3. REPLACE COMPRESSOR

1.Correct the refrigerant with recovery/recycling recharging equipment.
2.Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant.
3.Check for the noise from compressor again.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace compressor.

4. CHECK WITH GAUGE PRESSURE

Perform the diagnosis with the gauge pressure. Trouble Diagnosis For Unusual Pressure.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace malfunctioning part.

5. REPLACE EXPANSION VALVE

1.Correct the refrigerant with recovery/recycling recharging equipment.
2.Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant.
3.Check for the noise from expansion valve again.
Are the symptoms solved?
YES- INSPECTION END
NO- Replace expansion valve.

6. CHECK A/C PIPING (PIPE, FLEXIBLE HOSE)

1.Check A/C piping (pipe, flexible hose) (for deformation and damage, etc.).
2.Check the installation condition of clips and brackets, etc. of A/C piping (pipe, flexible hose).
Is the inspection result normal?
YES- Fix the line with rubber or come vibration absorbing material.
NO- Repair or replace parts according to the inspection results.

7. CHECK DRIVE BELT

Check tension of the drive belt. Procedures.
Is the inspection result normal?
YES- Check the noise from compressor: GO TO 3.
NO- Adjust or replace drive belt according to the inspection results.