What is a key indicator of an improperly charged refrigeration system?

An improperly charged refrigeration system often exhibits pressure and temperature readings that deviate from the standard values expected for the specific refrigerant and operating conditions. When a system is overcharged, the pressure will be higher than optimal, leading to potential compressor damage and reduced efficiency. Conversely, if the system is undercharged, pressures will be lower, resulting in inadequate cooling capacity and potential issues with evaporator coil freezing.

Monitoring pressure and temperature is crucial because they directly relate to the system's cooling efficiency. In a well-functioning system, these readings should align closely with the predefined operating parameters for the equipment being used. Significant deviations indicate underlying issues, which could stem from improper refrigerant levels or system malfunctions, necessitating further investigation to restore optimal performance.