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Bard part number 8000-156 is an OEM scroll compressor, listed as Copeland model ZR46K3-TF5-230, used in select Bard wall mounted air conditioner and heat pump systems to circulate refrigerant and restore proper cooling capacity after a compressor failure. This compressor is commonly specified for 200 to 230V, 3 phase applications and is associated with R-22 and R-407C refrigerants, so correct system match is critical. When replacing a compressor, confirm the exact Bard model and serial, electrical phase, and refrigerant type, and follow standard best practices including replacing the filter drier, verifying proper oil management, and pulling a deep vacuum before charging to protect the new OEM compressor and return the unit to dependable operation.