Replaced failed compressor in York YCJD48S41S1 AC unit. Recovered R-410A refrigerant. Removed Copeland ZP42K5E-PFV-830 compressor. Installed new compressor, brazed connections under nitrogen purge. Evacuated system to 250 microns. Recharged to 6.2 lbs R-410A. Verified 12°F subcooling and 18°F superheat. Tested amperage draw and capacitor microfarads.