Manifold Gauge Set Connection
If a manifold gauge set is used, connect it as follows:
1. Turn both manifold gauge set valves all the way to the right, to close high and low pressure hoses to the center manifold and hose. Rotunda R-134a Low Side Quick Disconnect 176-R0036 and R-134a High Side Quick Disconnect 176-R0037 or equivalent must be used to connect the manifold gauge set or charging station to both the high-pressure and low-pressure service gauge port.
2. Remove the A/C charging valve cap from the high-and low-pressure service gauge port valves.
3. Connect the high-and low-pressure hose, to the respective high-and low-pressure service gauge ports.