AC pressure switch internal check valve? (1 Viewer)

[highkick05]

Does the 100 series have an internal check valve on the A/C pressure switch allowing me to just swap them without having the system vacuumed

 

[flintknapper]

Does the 100 series have an internal check valve on the A/C pressure switch allowing me to just swap them without having the system vacuumed

Negative.

System must be evacuated.

 

[highkick05]

Negative.

System must be evacuated.

Cheers mate.