[Service] in [Location] | [Brand/Equipment]

1. Initial Fault Diagnosis

The client reported a complete halt in production due to the primary industrial chiller tripping on high discharge pressure. Upon arrival at the facility, our engineering team conducted a thermal and acoustic diagnostic. The system was found completely locked out, and the compressor was drawing locked-rotor amps (LRA).

2. Execution & Resolution

• Recovered existing R-134a refrigerant safely into cylinders to prevent environmental venting.
• Dismantled the Bitzer semi-hermetic compressor. Discovered shattered valve plates caused by severe liquid slugging.
• Replaced the valve plate assembly, flushed the system to remove metal particulate, and installed a high-capacity suction line filter drier.
• Pulled a deep vacuum to 500 microns, recharged the system, and calibrated the Danfoss electronic expansion valve to prevent future liquid flood-back.