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REFRIGERANT RECYCLING (R-12) refrigerant is a chlorofluorocarbon (CFC) that can contribute to the depletion of the ozone MANIFOLD GAUGE SET CONNECTIONS GENERAL INFORMATION The high pressure (discharge) (RED) hose should be attached to the 1/4 in. discharge service port. This The low pressure (suction) (BLUE) hose should be attached to the 3/8 in. suction service port. This port SUCTION (LOW PRESSURE) GAUGE CONNECTION (1) Remove the service port cap from 3/8 in. suc- tion service port. (2) Check all valves on the equipment being used to verify they are closed. (3) Inspect the hose gasket in the service port con- nector at the end of the (BLUE) hose. If the gasket is (4) Thread the hose connector onto the service port. Quickly secure hose connector to the service To disconnect suction gauge (BLUE) hose: (a) Wrap the end of hose with a shop towel. vice port to keep the gasket in contact with service (d) Quickly rotate the connector counterclock- wise. When the hose connector is completely Fig. 2 Refrigerant Charging Station—Typical Fig. 3 Refrigerant Recovery/Recycling Station—Typical Fig. 4 Manifold Gauge Set—Typical Ä HEATING AND AIR CONDITIONING 24 - 9 |