- Let the engine run with the air conditioning on for 10 - 15 minutes.- Switch off the engine.1. Connect the pressurizing and draining pipes (1a) for the drainage equipment (1b) to the valves on the air conditioning system high pressure and low pressure pipes.
- Start the procedure for draining the refrigerant fluid, following the instructions in the equipment manual.- Whilst draining the system the compressor fluid that comes out collects in a special container.- Refill the system with exactly the same amount of fluid indicated on the container.
- If some of the components are being replaced, the following amount of oil must be added for each of the replaced components:- Drier filter: 15 cm3- Pipes: 5 cm3/m- Evaporator: 40 cm3- Condenser: 40 cm3- If there are accidental breaks that cause the "rapid" draining of the system (in less than 5 minutes) then the exact amount of fluid that comes out cannot be determined because the high pressure may cause seepage. Add the following recommended amount of oil 75 cm3.- Start the procedure for repressurizing the refrigerant fluid, following the instructions in the equipment manual.- Add the recommended quantity of refrigerant fluid.
- In the case of damage to the compressor or other system components or following prolonged exposure of the pipes to the air (more than 6 hours) the WASHING procedure must be carried out as follows.- Clean the pipes connected to the compressor using a jet of air.- Connect the (drained) system to the repressurizing equipment.- Introduce the recommended quantity of refrigerant fluid at the high pressure side.- Collect the refrigerant fluid at the low pressure side.- Repeat the introduction and collection of fluid.- Proceed with draining and repressurizing the system as illustrated previously.- Refill the system with the recommended amount of oil.
