Service Access Ports

Service Access Ports

The primary seal for the service port is the sealing cap. This cap contains a specially designed O-ring or gasket that provides a leak-free seal. A loss of refrigerant charge may result under the following conditions:
^ The cap is loose
^ The cap is missing
^ The wrong cap is used

The high side port is identified with a red cap. The low side port is identified with a blue cap.