Gauge Manifold Connections

Read the following before you proceed with a gauge manifold connection.

• If a procedure requires the compressor to operate at a suction pressure below 5 inch vacuum (-17 kPa), place a jumper across the low pressure cutout switch to prevent compressor shutdown.

• Use of the quick disconnect access valve during evacuation increases the time required to reach the correct micron level.

The gauges indicate low and high side pressures. Operate one or both hand valves to perform the different service operations:

Hand Valves Open to Center Port

Open

Hand Valves Closed to Center Port

Open