Quick Connect Couplings
Specially developed quick connect couplings are used to connect the draining and charging equipment hoses to the compressor's service connections. These quick connect connections are designed as so called Schrader valves and are therefore connected in two stages:
1 Press the quick connect coupling onto the compressor 5 service connection.
2 Turn the knob clockwise to open the valve and let the refrigerant pass through the connection.
To remove the quick connect coupling, first turn the knob (2) anti-clockwise to close the valve. Then remove the quick connect coupling by pressing the spring-loaded catch (3), 50 that the locking sleeve (4) can be pulled up.
When the valve is pressed in, a hissing sound is heard as the valve also evacuates the refrigerant inside the quick connect coupling.
The connections for the low-pressure side and high-pressure side are different sizes so that they cannot be mixed up.