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Refer to Figure 26 and the following procedure:
1. Carefully vent any pressurized charge from the compressor and system..
2. After venting the pressurized system, connect the Gage Block and Hoses as shown in
Figure 26. LP and HP valves are fully open. Both Service Valves are fully opened.
3. As illustrated in Figure 26, connect a good quality Digital Micron Gage to the Liquid
Service Valve Access Port with an Isolation Hose/Valve. Connect a quality Vacuum Pump
(at least 6 CFM capacity) to the Gage Block.
SD-410-QS (H) (06/15)
Figure 25. SD(H) Piping
Page 36
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