Appendices Polycold Cryochiller
Procedure Installation and Operation Manual
Brooks Automation
12-16
214072 Revision B
9. For Four Port Refrigeration Manifold
Connect the 1/4” service line from the high pressure gauge port to the evacuation port in the valve
box for the circuit to be evacuated.
If evacuating a dual circuit unit, connect to both the high pressure gauge port and the vapor charg-
ing port to each evacuation port in the valve box.
10. For Service Bypass Line
Connect the 1/4” service line from the hand valve on the service bypass line to the Low Pressure
Service Suction Port on the back of the compressor.
For Three or Four Port Refrigeration Manifold
Connect the 1/4” service line from the low pressure port to the Low Pressure Service Suction Port
on the back of the compressor.
Step Action
High Pressure
Gauge
High Pressure
Port
Vapor Charging
Port
1/4” Lines
High Pressure
Hand Valve
Vapor Charging
Hand Valve
Low Pressure
Gauge
Low Pressure
Hand Valve
Vacuum Pump
Hand Valve
Low Pressure
1/4” Line
Port
Low Pressure
Service Suction
Valve Stem
Low Pressure
Service Suction
Port
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