Attention. When performing any type of work on the vehicle that involves depressurizing the air conditioning system, completely unload the refrigerant and then load the system in the required volume (see below).
Refrigerant discharge (removal)
Attention. Refrigerant unloading operations must be carried out in accordance with the operating instructions for the service equipment.
Unscrew the cap on any of the 2 fittings (it is necessary to work with gloves)
Press the valve core with a suitable thin tool and bleed the refrigerant from the system.
This work must be done outdoors. When releasing the refrigerant, do not rush, then it will have time to evaporate. Please note that some oil may splash, so please have a cleaning cloth handy.
Vacuuming the system
Before loading the refrigerant, it is necessary to evacuate the air conditioning system in accordance with the operating instructions for the service equipment.
Refrigerant loading
Attention. Refrigerant loading operations must be carried out in accordance with the operating instructions for the service equipment.
[Material was taken from the website: www.ladaman.ru]
Figure 4-1 - Charging the air conditioning system with refrigerant: 1 - high pressure circuit nipple; 2 - low pressure circuit nipple
Attention. When the engine is not running, the refrigerant must be loaded through the high-pressure circuit, Figure 4-1. If the system is not fully loaded with refrigerant, additional loading must be performed with the engine running and the air conditioning system switched on through the low-pressure circuit with gaseous refrigerant.
Mass of refrigerant charged into the system (R134a, aka freon HFC-134a) is 475±35 g.
Special SP10 oil is added to the refrigerant to lubricate the compressor. It is strictly forbidden to use other types of refrigerants and oils in the system.
Checking for refrigerant leaks
Attention. Work on detecting refrigerant leaks must be carried out in accordance with the operating instructions for the leak detector.