Mise en place du gaz clim automobile
Automotive air conditioning
AUTOMOTIVE AIR CONDITIONING
Where is the air conditioning low pressure connector located?
How and where to connect to car air conditioning
To work on a self-charging air conditioning circuit with refrigerant gas, you inevitably have to connect somewhere to connectors which are intended for this purpose. These connection sockets can be called variously:
Air conditioning connection socket
Auto air conditioning service valve
A/C drain valve (? rare)
Car air conditioning charging socket
Auto air conditioning valve (?)
Car air conditioning inlet
Auto air conditioning service socket
Auto air conditioning charging port
But the technical term is service port.
There are two service ports. These are the only two places that allow you to plug into the car's air conditioning system. These service sockets are located under the bonnet, around the engine.
To charge an auto air conditioning circuit, we are only interested in the low pressure service socket since it is through this socket that the refrigerant gas is injected.
Service outlets can be located anywhere. Some vehicles have these outlets on one side of the engine, while others will have them on the opposite side, or on either side of the hood. They can be apparent, and therefore visible at first glance, as they can be hidden by other elements.
Locate the service port for car air conditioning gas refill.
The heart of the air conditioning system is the compressor. The compressor is linked to the engine by the belt. Locate the belt with its gears and pulleys. The location of the compressor varies with vehicles. It can be up, down, left or right… there is no rule! A good trick to identify the compressor is to run the engine without turning on the air conditioning. The belt turns and drives the pulleys and the gears which in turn drive the other elements such as the alternator or the water pump, but only the compressor does not turn.
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Two aluminum tubes are attached to the compressor. These two tubes transport the refrigerant gas to the other elements of the car's air conditioning refrigeration circuit. One is finer than the other. The compressor compresses the gas coming from the large tube and sends it into the fine tube. The thin tube is under high pressure due to the compression performed by the compressor. The large tube is under low pressure. The service ports may be near the compressor. Otherwise, follow the tubes!
Blue = Low pressure = L (Low pressure)
Red = High pressure = H (High pressure)
The tube can take a very complicated route. Rubber sleeves can take over intermittently, when the route requires it. Follow – with your gaze, finger or hand, it doesn't matter – the route of the big pipe taking into account all its changes in appearance, until you see a growth, a small piece of tubing laid perpendicular to the tubing. This is the service socket. In principle it is covered with a protective cap. The cap is black or blue. It may contain the letter L, such as low ( bas ).
Confirm identification of correct service port
To make sure it is identified, you can fit a low pressure quick connector on it, without clipping it. It corresponds exactly to the diameter of the service port. If the service port cannot fit into the fitting, it is the wrong service port. The same way you located the low pressure service port, you will find the high pressure service port.
