Kia Sorento 2001 General Information Manual page 1253

1. Discharge refrigeration system. Refer to operating instructions of you refrigerant recovery/recycling/charging
station for proper procedures.
2. Evacuate system to remove all air and moisture from it. Refer to operating instructions of your refrigerant
recovery/recycling/charging station for proper procedures.
3. Charge system with refrigerant. Refer to operating instructions of your refrigerant recovery/recycling
/charging station for proper procedures.
4. After charging, measure refrigerant pressure. Refer to "Checking Refrigerant Pressure".
5. If low-and high-pressure sides are still too high, replace receiver/drier.
No refrigerant circulation
Measurement pressure
Low-pressure : Below 20 psi (137 kPa, 1.40 kg/cm²)
High-pressure : Below 88 psi (608 kPa, 6.20 kg/cm²)
- Condition -
Refrigerant flow obstructed by moisture or dirt, causing freezing or blockage of expansion valve.
1. Step 1
Turn air conditioner OFF for about 10 minutes. Turn air conditioner ON to determine whether blockage is
due to moisture or dirt.
A. If caused by moisture : System will operate normally after being OFF for 10 minutes. (Ice melts and
relieves blockage.).
B. If caused by dirt : System remains abnormal after being OFF 10 minutes. Go to Step 2.
2. Step 2
(1) Remove expansion valve.
(2) Blow out dirt with compressed air.
(3) If unable to remove dirt, replace expansion valve.