17.7. Discharge of the air conditioning system


  1. Connect to the air conditioning system the manometer for measurement of pressure.
  2. Arrange a towel under the open end of the central hose.
  3. Slowly open the valve of high pressure and discharge the air conditioning system.

At a bystry discharge of coolant from the air conditioning system, from system compressor oil can flow out.

  1. Check whether there are on a towel oil spots. If this is so, smoothly close the valve.
  2. After reduction of pressure in the air conditioning system lower than 3,5 kg/cm2 open the valve of low pressure.
  1. Open valves of high and low pressure and slowly reduce pressure in the air conditioning system until the manometer shows 0 kg/cm2.