Manifold Gauge Set Connections
CAUTION:
Do not use an R-12 manifold gauge set on an R-134a system. The refrigerants are not compatible and system damage will result.
The manifold gauge set connects as follows:
- Low pressure hose (Blue with Black stripe) attaches to suction service port.
- High pressure hose (Red with Black stripe) attaches to discharge service port.
- Center manifold hose (Yellow or White with Black stripe) is used to recover, evacuate and charge refrigerant system. When low or high pressure valves on manifold gauge set are opened, refrigerant in system will escape through this hose.