What is an indicator of poor maintenance in a refrigeration system?

Frequent compressor cycling is a clear indicator of poor maintenance in a refrigeration system. When the compressor cycles frequently, it suggests that the system may be struggling to reach or maintain the desired temperature. This can be caused by various issues, such as refrigerant leaks, poor airflow due to dirty filters, or inadequate cooling capacity. High compressor cycling not only indicates a problem with the system's performance but can also lead to increased wear and tear on the compressor, potentially leading to premature failure.

In contrast, high energy efficiency suggests that the system is operating well and efficiently, while consistent low temperature output indicates that the refrigeration system is performing its function as intended. A clear sight glass indication typically means that the refrigerant level is adequate and that there are no significant issues within the system, further suggesting that maintenance has been performed properly.