Kia Stinger: Heating, Ventilation And Air Conditioning / Air Conditioning System

R-134a liquid refrigerant is highly volatile. A drop on the skin of your hand could result in localized frostbite. When handling the refrigerant, be sure to wear gloves.

It is standard practice to wear goggles or glasses to protect your eyes, and gloves to protect your hands. If the refrigerant splashes into your eyes, wash off immediately with clean water.

The R-134a container is highly pressurized. Never leave it in a hot place, and check that the storage temperature is below 52°C (126°F).

An electronic leak detector should be used to check the system for refrigerant leakage. Bear in mind that the R-134a, upon coming into contact with flame, produces phosgene, a highly toxic gas.

Use only recommended lubricant for R-134a systems. If lubricants other than the recommended type are used, system failure may occur.

PAG lubricant absorbs moisture from the atmosphere at a rapid rate, therefore the following precautions must be observed:

If an accidental discharge in the system occurs, ventilate the work area before resuming the service.

Never open or loosen a connection before discharging the system.

Seal the open fittings of components with a cap or plug immediately to prevent intrusion of moisture or dust.

Do not remove the sealing caps from a replacement component until it is ready to be installed.

Before connecting an open fitting, always install a new sealing ring. Coat the fitting and seal with refrigerant oil before making the connection.

When the refrigeration system needs to be opened, have everything you will need to service the system ready so the system will not be left open any longer than it is necessary.

Cap or plug all lines and fittings as soon as they are opened to prevent entrance of dirt and moisture.

All lines and components in parts stock should be capped or sealed until they are ready to be used.

Never attempt to rebind formed lines to fit. Use the correct line for the installation you are servicing.

All tools, including refrigerant dispensing manifold, gauge set manifold and test hoses, should be kept clean and dry.

Check refrigerant specifications label inside engine room.

If refrigerant specifications label is not visible, check the refrigerant service port diameter.

※ Service port diameter for high/low pressure side varies based on refrigerant specification.

Connect an R-134a refrigerant Recovery / Recycling / Charging system (A) to the high-pressure service port (C) and the low-pressure service port (B) as shown, following the equipment manufacturer's instructions.

Measure the amount of refrigerant oil removed from the A/C system after the recovery process is completed. Be sure to install the same amount of new refrigerant oil back into the A/C system before charging.

When an A/C system has been opened to the atmosphere, during installation or repair, it must be evacuated using an R-134a refrigerant Recovery/Recycling/Charging system. (If the system has been open for several days, the receiver/drier should be replaced, and the system should be evacuated for several hours.)

Connect an R-134a refrigerant Recovery/Recycling/Charging system (A) to the high-pressure service port (B) and the low-pressure service port (C) as shown, following the equipment manufacturer's instructions.

If the low-pressure does not reach more than 93.3 kPa (700 mmHg, 27.6 in.Hg) in 10 minutes, there is probably a leakage in the system. Partially charge the system, and check for leakage. (See Refrigerant Leak Test.)

Remove the low pressure valve from the low-pressure service port.

Connect an R-134a refrigerant Recovery/Recycling/Charging System (A) to the high-pressure service port (B) as shown, following the equipment manufacturer's instructions.

Add the same amount of new refrigerant oil to the system that was removed during recovery. Use only specified refrigerant oil. Charge the system with R-134a or R-1234yf refrigerant. Do not overcharge the system as it may damage the compressor.

In order to use the leak detector properly, read the manual supplied by the manufacturer.

Check the tightening torque of the connection fittings, and if it is too loose, tighten to the proper torque. Using a leak detector (A), check for gas leakage.

If leakage continues even after the fitting has been tightened, discharge the refrigerant from the system, disconnect the fittings, and check their seating faces for damage. Replace at all times even for a slight damage.

Check the compressor oil and add oil if required.

Charge the system and recheck for gas leaks. If no leaks are found, evacuate and charge the system again.