Manifold Gauge Set Connection

Test equipment must be connected to the refrigerant system in order to make system tests. If a charging station is used, follow the instructions of the station manufacturer. If a manifold gauge set is used, use the following procedure:
1. Turn both manifold gauge set valves all the way to the right to close the high- and low-pressure hoses to the center manifold and hose. Rotunda R-134a High Side Quick Disconnect 176-R0037 and Rotunda R-134a Low Side Quick Disconnect 176-R0036 or equivalent, must be used to connect the Rotunda R-134a Manifold Gauge Set 176-R032A or R-134a A/C Service Center 176-00001 or the Rotunda R-134a Mobile Recycling Center 023-00150 or equivalents to the service gauge port valves.
2. Remove the caps from the high- and low-pressure service gauge port valves.
3. Connect the high- and low-pressure hoses, or adapters, to the respective high- and low-pressure service gauge port valves.