SSANGYONG Rexton Y200 Manual page 1357

7B-16 GENERAL HVAC SYSTEM
4. The discharging pressure increases when the
charging valve charges excessively, so charge
the charging valve to the specified amount with
measuring the weight of the refrigerant before
closing the high pressure valve.
5. Charge the specified amount of the refrigerant and
then close the valve of the manifold gauge. Check
the system for any leak.
Operation Check
Notice: Operation Check is recommended before
removing the manifold gauge.
1. Install the manifold gauge set.
2. Run the engine at 2,000 rpm and set the blower
switch at 'HI' and A/C switch 'ON'. Set the
temperature control lever at 'COOL'.
3. Keep opening all of the window and door.
4. Place a dry bulb thermometer to the front duct.
5. Place a psychrometer close to the inlet of the
cooling unit.
YAD7B240
6. Check the high pressure gauge reading within
14 - 16 kg/cm
If the reading indicates high excessively, spray
the water to the condenser.
If the reading indicates low excessively, cover the
condenser with the towel.
7. Check the temperature of air inlet within 25 - 35 °C.
8. Calculate the relative humidity from the
psychrometic graph comparing the wet/dry
temperature at the air inlet.
9. Measure the wet/dry temperature at the cold air
outlet and calculate the temperature difference of
the dry bulb between the inlet and the outlet.
10. Check the cross point of the relative humidity and
check the temperature difference between the
black line. If the cross point is located between
the black line, the cooling performance is normal.
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SSANGYONG Y200