12.Install the new compressor and the new capillary assembly (the correct capillary and strainer may be obtained from Carrier RCD), into the unit.
13.Leak check the unit with 150 psi of nitrogen pressure.
14.For 52C,P units, the system should be evacuated from the high side to the low side to a minimum of 200 microns of mercury. This evacuation removes residual moisture from the system prior to charging.
15.For Heat Pump Units: Recharge unit to the nameplate refrigerant charge using a charging cylinder.
16.Pinch off each access valve on the process tubes, in 2 places, using a pinch off tool such as Imperial tool
17.Reassemble the unit by reversing steps
18.Connect the compressor wires and energize the unit to verify operation.
■REFRIGERANT CHARGING — Every mechanical refrigeration system that is opened for servicing must be accurately charged before it is returned to service. Run the compressor ONLY after charging the system with refrigerant.
IMPORTANT: The compressor should never be operated without refrigerant!
It is important to remember that recovered and/or recycled refrigerant may only be recharged into the system from which it was initially recovered, or another one owned by the same customer. Charge level is important. Charge units only as recommended by manufacturer.
FIGURE 32 — STRAINER AND
CAPILLARY TUBE LOCATION
FILTER DRIER
COMPRESSOR
FIGURE 33A — IN-LINE FILTER DRIER — GENERAL INSTALLATION LOCATION FOR HEAT/COOL UNIT
FILTER DRIER
COMPRESSOR
FIGURE 33B — IN-LINE FILTER DRIER — GENERAL INSTALLATION LOCATION FOR HEAT PUMP UNIT
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