SHC-410-CP (01/13)
Page 5
Figure 1. Typical Evacuation & Initial Charge Set-up for SC, SD and SCW Compressor
Models (SC model shown).
7. Close the LP and HP valves on the gage block. Disconnect the vacuum pump
and the utility hose from the gage block. Isolate/protect the Digital Micron Gage
from the liquid Earth Loop Service Valve until the initial refrigerant charge is
complete.
8. Open the refrigerant container valve and
inject liquid refrigerant into the
charging port
as shown in Figure 1.
9. Charge with liquid refrigerant until
3 pounds
of refrigerant per ton of system
capacity, has entered the system.
Liquid entering the system at the charging port goes directly to the system earth
loops. It does not go to the compressor. Should the pressures equalize and
