1. Install a pressure gauge on the manifold. |
2. Start the engine, leave to work on engine speed 2000 min -1 and set the maximum cooling at high fan speed. |
3. Open the windows or doors. |
4. Place the thermometer in the air intake grille in the vehicle. |
5. Install the wet and dry thermometer as close as possible to the inlet of the cooling unit. |
| 6. Verify that the pressure indicated by the pressure gauge is in the range 1,373-1,575 kPa. If the pressure is too high, add water to the condenser. If the pressure is too low, close the front side of the condenser. |
7. Check that the temperature of the air in the air intake grille in the interior of the vehicle is in the range 25-35 ?� C. |
| 8. According to the schedule, calculate the relative humidity by comparing the temperature of the wet and dry thermometers. |
9. Measure the temperature of the air intake grille in the interior of the vehicle and calculate the difference between the dry bulb and a thermometer in the air intake grille. |
10. Verify that if the intersection of relative humidity and temperature differences are within the tolerance, then the air conditioning system is operating properly. |