When Replacing Parts On A/C System
- Never open or remove a connection before discharging the system.
- Seal the open fittings of components with a cap or plug immediately to prevent intrusion of moisture or dust.
- Do not remove the sealing caps from a Replacement component until it is ready to be installed.
- Before connecting an open fitting, always install a new sealing ring. Coat the fitting and seal with refrigerant oil before making the connection.