CSR-20 & CSR-40, September 1999
Refrigeration System Diagnosis and Service Gauge Manifold Valve Positions 6-7
Gauge Manifold Valve Positions
The gauges indicate low and high side pressures.
Operate one or both hand valves to perform the different ser-
vice operations shown below.
Gauge Manifold Closed to Center Port
1. Close Hand Valves
Charging the System
1. Quick Disconnect Access Valve
2. Discharge Service Valve (DSV)
3. Suction Service Valve (SSV)
Gauge Manifold Open to Center Port
1. Open Hand Valves
Balancing the Pressure
1. Quick Disconnect Access Valve
2. Discharge Service Valve (DSV)
3. Suction Service Valve (SSV)
Removing Refrigerant
1. Quick Disconnect Access Valve
2. Discharge Service Valve (DSV)
3. Suction Service Valve (SSV)
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